Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity

Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Jing Ren [verfasserIn] Tingting Hu [verfasserIn] Qinghua Gong [verfasserIn] Qian Wang [verfasserIn] Bin Sun [verfasserIn] Tingting Gao [verfasserIn] Pei Cao [verfasserIn] Guowei Zhou [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2020

Schlagwörter:	n-p heterojunction Bi Visible-light Photocatalytic reduction Cr(VI)

Übergeordnetes Werk:	In: Nanomaterials - MDPI AG, 2012, 10(2020), 9, p 1813
Übergeordnetes Werk:	volume:10 ; year:2020 ; number:9, p 1813

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/nano10091813

Katalog-ID:	DOAJ037338749

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allfields	10.3390/nano10091813 doi (DE-627)DOAJ037338749 (DE-599)DOAJa813f1e5879e4a97bddccbe7ef40976b DE-627 ger DE-627 rakwb eng QD1-999 Jing Ren verfasserin aut Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment. n-p heterojunction Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< Visible-light Photocatalytic reduction Cr(VI) Chemistry Tingting Hu verfasserin aut Qinghua Gong verfasserin aut Qian Wang verfasserin aut Bin Sun verfasserin aut Tingting Gao verfasserin aut Pei Cao verfasserin aut Guowei Zhou verfasserin aut In Nanomaterials MDPI AG, 2012 10(2020), 9, p 1813 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:10 year:2020 number:9, p 1813 https://doi.org/10.3390/nano10091813 kostenfrei https://doaj.org/article/a813f1e5879e4a97bddccbe7ef40976b kostenfrei https://www.mdpi.com/2079-4991/10/9/1813 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2020 9, p 1813
spelling	10.3390/nano10091813 doi (DE-627)DOAJ037338749 (DE-599)DOAJa813f1e5879e4a97bddccbe7ef40976b DE-627 ger DE-627 rakwb eng QD1-999 Jing Ren verfasserin aut Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment. n-p heterojunction Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< Visible-light Photocatalytic reduction Cr(VI) Chemistry Tingting Hu verfasserin aut Qinghua Gong verfasserin aut Qian Wang verfasserin aut Bin Sun verfasserin aut Tingting Gao verfasserin aut Pei Cao verfasserin aut Guowei Zhou verfasserin aut In Nanomaterials MDPI AG, 2012 10(2020), 9, p 1813 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:10 year:2020 number:9, p 1813 https://doi.org/10.3390/nano10091813 kostenfrei https://doaj.org/article/a813f1e5879e4a97bddccbe7ef40976b kostenfrei https://www.mdpi.com/2079-4991/10/9/1813 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2020 9, p 1813
allfields_unstemmed	10.3390/nano10091813 doi (DE-627)DOAJ037338749 (DE-599)DOAJa813f1e5879e4a97bddccbe7ef40976b DE-627 ger DE-627 rakwb eng QD1-999 Jing Ren verfasserin aut Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment. n-p heterojunction Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< Visible-light Photocatalytic reduction Cr(VI) Chemistry Tingting Hu verfasserin aut Qinghua Gong verfasserin aut Qian Wang verfasserin aut Bin Sun verfasserin aut Tingting Gao verfasserin aut Pei Cao verfasserin aut Guowei Zhou verfasserin aut In Nanomaterials MDPI AG, 2012 10(2020), 9, p 1813 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:10 year:2020 number:9, p 1813 https://doi.org/10.3390/nano10091813 kostenfrei https://doaj.org/article/a813f1e5879e4a97bddccbe7ef40976b kostenfrei https://www.mdpi.com/2079-4991/10/9/1813 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2020 9, p 1813
allfieldsGer	10.3390/nano10091813 doi (DE-627)DOAJ037338749 (DE-599)DOAJa813f1e5879e4a97bddccbe7ef40976b DE-627 ger DE-627 rakwb eng QD1-999 Jing Ren verfasserin aut Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment. n-p heterojunction Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< Visible-light Photocatalytic reduction Cr(VI) Chemistry Tingting Hu verfasserin aut Qinghua Gong verfasserin aut Qian Wang verfasserin aut Bin Sun verfasserin aut Tingting Gao verfasserin aut Pei Cao verfasserin aut Guowei Zhou verfasserin aut In Nanomaterials MDPI AG, 2012 10(2020), 9, p 1813 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:10 year:2020 number:9, p 1813 https://doi.org/10.3390/nano10091813 kostenfrei https://doaj.org/article/a813f1e5879e4a97bddccbe7ef40976b kostenfrei https://www.mdpi.com/2079-4991/10/9/1813 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2020 9, p 1813
allfieldsSound	10.3390/nano10091813 doi (DE-627)DOAJ037338749 (DE-599)DOAJa813f1e5879e4a97bddccbe7ef40976b DE-627 ger DE-627 rakwb eng QD1-999 Jing Ren verfasserin aut Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment. n-p heterojunction Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< Visible-light Photocatalytic reduction Cr(VI) Chemistry Tingting Hu verfasserin aut Qinghua Gong verfasserin aut Qian Wang verfasserin aut Bin Sun verfasserin aut Tingting Gao verfasserin aut Pei Cao verfasserin aut Guowei Zhou verfasserin aut In Nanomaterials MDPI AG, 2012 10(2020), 9, p 1813 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:10 year:2020 number:9, p 1813 https://doi.org/10.3390/nano10091813 kostenfrei https://doaj.org/article/a813f1e5879e4a97bddccbe7ef40976b kostenfrei https://www.mdpi.com/2079-4991/10/9/1813 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2020 9, p 1813
language	English
source	In Nanomaterials 10(2020), 9, p 1813 volume:10 year:2020 number:9, p 1813
sourceStr	In Nanomaterials 10(2020), 9, p 1813 volume:10 year:2020 number:9, p 1813
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	n-p heterojunction Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< Visible-light Photocatalytic reduction Cr(VI) Chemistry
isfreeaccess_bool	true
container_title	Nanomaterials
authorswithroles_txt_mv	Jing Ren @@aut@@ Tingting Hu @@aut@@ Qinghua Gong @@aut@@ Qian Wang @@aut@@ Bin Sun @@aut@@ Tingting Gao @@aut@@ Pei Cao @@aut@@ Guowei Zhou @@aut@@
publishDateDaySort_date	2020-01-01T00:00:00Z
hierarchy_top_id	718627199
id	DOAJ037338749
language_de	englisch
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The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. 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callnumber-first	Q - Science
author	Jing Ren
spellingShingle	Jing Ren misc QD1-999 misc n-p heterojunction misc Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< misc Visible-light misc Photocatalytic reduction misc Cr(VI) misc Chemistry Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity
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topic_title	QD1-999 Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity n-p heterojunction Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< Visible-light Photocatalytic reduction Cr(VI)
topic	misc QD1-999 misc n-p heterojunction misc Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< misc Visible-light misc Photocatalytic reduction misc Cr(VI) misc Chemistry
topic_unstemmed	misc QD1-999 misc n-p heterojunction misc Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< misc Visible-light misc Photocatalytic reduction misc Cr(VI) misc Chemistry
topic_browse	misc QD1-999 misc n-p heterojunction misc Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< misc Visible-light misc Photocatalytic reduction misc Cr(VI) misc Chemistry
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title	Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity
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title_full	Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity
author_sort	Jing Ren
journal	Nanomaterials
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author_browse	Jing Ren Tingting Hu Qinghua Gong Qian Wang Bin Sun Tingting Gao Pei Cao Guowei Zhou
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author-letter	Jing Ren
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title_sort	spherical bi<sub<2</sub<wo<sub<6</sub</bi<sub<2</sub<s<sub<3</sub</mos<sub<2</sub< n-p heterojunction with excellent visible-light photocatalytic reduction cr(vi) activity
callnumber	QD1-999
title_auth	Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity
abstract	Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment.
abstractGer	Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment.
abstract_unstemmed	Exploiting excellent photocatalytic activity and stable heterostructure composites are of critical importance for environmental sustainability. The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment.
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container_issue	9, p 1813
title_short	Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity
url	https://doi.org/10.3390/nano10091813 https://doaj.org/article/a813f1e5879e4a97bddccbe7ef40976b https://www.mdpi.com/2079-4991/10/9/1813 https://doaj.org/toc/2079-4991
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The spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction is first prepared via an in situ hydrothermal method using Bi<sub<2</sub<WO<sub<6</sub<, Na<sub<2</sub<MoO<sub<4</sub<·2H<sub<2</sub<O, and CH<sub<4</sub<N<sub<2</sub<S, in which the intermediate phase Bi<sub<2</sub<S<sub<3</sub< is formed due to chemical coupling interaction of Bi<sub<2</sub<WO<sub<6</sub< and CH<sub<4</sub<N<sub<2</sub<S. Scanning electron microscopy indicates that the compactness of the sample can be easily adjusted by changing the contents of S and Mo sources in the solution. The results of ultraviolet–visible (UV–vis) diffuse reflectance spectra, photoluminescence, transient photocurrent response, and electrochemical impedance spectra indicate that the formation of heterojunctions contributes to enhancing visible-light utilization and promoting photogenerated carrier separation and transfer. The composite material is used as a catalyst for the visible light photocatalytic reduction of Cr(VI). Remarkably, the optimal Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p heterojunction achieves the greatest Cr(VI) reduction rate of 100% within 75 min (<i<λ</i< < 420 nm, pH = 2); this rate is considerably better than the Cr(VI) reduction rate of pure Bi<sub<2</sub<WO<sub<6</sub<. The recycling experiment also reveals that the photocatalytic performance of the n-p heterojunction toward Cr(VI) is still maintained at 80% after three cycles, indicating that the n-p heterojunction has excellent structural stability. The capture experiment proves that the main active species in the system are electrons. The reasonable mechanism of Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< photocatalytic reduction Cr(VI) is proposed. Our work provides new research ideas for the design of ternary heterojunction composites and new strategies for the development of photocatalysts for wastewater treatment.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">n-p heterojunction</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub<</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Visible-light</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Photocatalytic reduction</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Cr(VI)</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Chemistry</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Tingting Hu</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield 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Spherical Bi<sub<2</sub<WO<sub<6</sub</Bi<sub<2</sub<S<sub<3</sub</MoS<sub<2</sub< n-p Heterojunction with Excellent Visible-Light Photocatalytic Reduction Cr(VI) Activity

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