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 heter...
Ausführliche Beschreibung
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] |
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E-Artikel |
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Sprache: |
Englisch |
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2020 |
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Übergeordnetes Werk: |
In: Nanomaterials - MDPI AG, 2012, 10(2020), 9, p 1813 |
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Übergeordnetes Werk: |
volume:10 ; year:2020 ; number:9, p 1813 |
Links: |
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DOI / URN: |
10.3390/nano10091813 |
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Katalog-ID: |
DOAJ037338749 |
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520 | |a 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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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 |
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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 |
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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 |
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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 |
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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 |
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Jing Ren @@aut@@ Tingting Hu @@aut@@ Qinghua Gong @@aut@@ Qian Wang @@aut@@ Bin Sun @@aut@@ Tingting Gao @@aut@@ Pei Cao @@aut@@ Guowei Zhou @@aut@@ |
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Jing Ren |
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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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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) |
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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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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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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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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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QD1-999 |
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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 |
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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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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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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