Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation

In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is lo...
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Autor*in:	Zheng, Xiaoguang [verfasserIn] Wang, Gen [verfasserIn] Zhao, Yanhong [verfasserIn] Wu, Liyuan [verfasserIn] Wang, Yuanjiang [verfasserIn] Song, Yanyong [verfasserIn] Tian, Peijun [verfasserIn] Wang, Xiaojing [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory

Übergeordnetes Werk:	Enthalten in: Electrochimica acta - New York, NY [u.a.] : Elsevier, 1959, 376
Übergeordnetes Werk:	volume:376

DOI / URN:	10.1016/j.electacta.2021.137978

Katalog-ID:	ELV005723191

Internformat


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100	1		\|a Zheng, Xiaoguang \|e verfasserin \|4 aut
245	1	0	\|a Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation
264		1	\|c 2021
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520			\|a In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x.
650		4	\|a Potassium tantalate
650		4	\|a Ethylene glycol electrooxidation
650		4	\|a Electrocatalysis
650		4	\|a Density functional theory
700	1		\|a Wang, Gen \|e verfasserin \|4 aut
700	1		\|a Zhao, Yanhong \|e verfasserin \|4 aut
700	1		\|a Wu, Liyuan \|e verfasserin \|4 aut
700	1		\|a Wang, Yuanjiang \|e verfasserin \|4 aut
700	1		\|a Song, Yanyong \|e verfasserin \|4 aut
700	1		\|a Tian, Peijun \|e verfasserin \|4 aut
700	1		\|a Wang, Xiaojing \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Electrochimica acta \|d New York, NY [u.a.] : Elsevier, 1959 \|g 376 \|h Online-Ressource \|w (DE-627)300897561 \|w (DE-600)1483548-4 \|w (DE-576)094752451 \|x 1873-3859 \|7 nnns
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952			\|d 376

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publishDate	2021
allfields	10.1016/j.electacta.2021.137978 doi (DE-627)ELV005723191 (ELSEVIER)S0013-4686(21)00268-1 DE-627 ger DE-627 rda eng 540 DE-600 35.00 bkl Zheng, Xiaoguang verfasserin aut Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x. Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory Wang, Gen verfasserin aut Zhao, Yanhong verfasserin aut Wu, Liyuan verfasserin aut Wang, Yuanjiang verfasserin aut Song, Yanyong verfasserin aut Tian, Peijun verfasserin aut Wang, Xiaojing verfasserin aut Enthalten in Electrochimica acta New York, NY [u.a.] : Elsevier, 1959 376 Online-Ressource (DE-627)300897561 (DE-600)1483548-4 (DE-576)094752451 1873-3859 nnns volume:376 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.00 Chemie: Allgemeines AR 376
spelling	10.1016/j.electacta.2021.137978 doi (DE-627)ELV005723191 (ELSEVIER)S0013-4686(21)00268-1 DE-627 ger DE-627 rda eng 540 DE-600 35.00 bkl Zheng, Xiaoguang verfasserin aut Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x. Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory Wang, Gen verfasserin aut Zhao, Yanhong verfasserin aut Wu, Liyuan verfasserin aut Wang, Yuanjiang verfasserin aut Song, Yanyong verfasserin aut Tian, Peijun verfasserin aut Wang, Xiaojing verfasserin aut Enthalten in Electrochimica acta New York, NY [u.a.] : Elsevier, 1959 376 Online-Ressource (DE-627)300897561 (DE-600)1483548-4 (DE-576)094752451 1873-3859 nnns volume:376 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.00 Chemie: Allgemeines AR 376
allfields_unstemmed	10.1016/j.electacta.2021.137978 doi (DE-627)ELV005723191 (ELSEVIER)S0013-4686(21)00268-1 DE-627 ger DE-627 rda eng 540 DE-600 35.00 bkl Zheng, Xiaoguang verfasserin aut Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x. Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory Wang, Gen verfasserin aut Zhao, Yanhong verfasserin aut Wu, Liyuan verfasserin aut Wang, Yuanjiang verfasserin aut Song, Yanyong verfasserin aut Tian, Peijun verfasserin aut Wang, Xiaojing verfasserin aut Enthalten in Electrochimica acta New York, NY [u.a.] : Elsevier, 1959 376 Online-Ressource (DE-627)300897561 (DE-600)1483548-4 (DE-576)094752451 1873-3859 nnns volume:376 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.00 Chemie: Allgemeines AR 376
allfieldsGer	10.1016/j.electacta.2021.137978 doi (DE-627)ELV005723191 (ELSEVIER)S0013-4686(21)00268-1 DE-627 ger DE-627 rda eng 540 DE-600 35.00 bkl Zheng, Xiaoguang verfasserin aut Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x. Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory Wang, Gen verfasserin aut Zhao, Yanhong verfasserin aut Wu, Liyuan verfasserin aut Wang, Yuanjiang verfasserin aut Song, Yanyong verfasserin aut Tian, Peijun verfasserin aut Wang, Xiaojing verfasserin aut Enthalten in Electrochimica acta New York, NY [u.a.] : Elsevier, 1959 376 Online-Ressource (DE-627)300897561 (DE-600)1483548-4 (DE-576)094752451 1873-3859 nnns volume:376 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.00 Chemie: Allgemeines AR 376
allfieldsSound	10.1016/j.electacta.2021.137978 doi (DE-627)ELV005723191 (ELSEVIER)S0013-4686(21)00268-1 DE-627 ger DE-627 rda eng 540 DE-600 35.00 bkl Zheng, Xiaoguang verfasserin aut Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x. Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory Wang, Gen verfasserin aut Zhao, Yanhong verfasserin aut Wu, Liyuan verfasserin aut Wang, Yuanjiang verfasserin aut Song, Yanyong verfasserin aut Tian, Peijun verfasserin aut Wang, Xiaojing verfasserin aut Enthalten in Electrochimica acta New York, NY [u.a.] : Elsevier, 1959 376 Online-Ressource (DE-627)300897561 (DE-600)1483548-4 (DE-576)094752451 1873-3859 nnns volume:376 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.00 Chemie: Allgemeines AR 376
language	English
source	Enthalten in Electrochimica acta 376 volume:376
sourceStr	Enthalten in Electrochimica acta 376 volume:376
format_phy_str_mv	Article
bklname	Chemie: Allgemeines
institution	findex.gbv.de
topic_facet	Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory
dewey-raw	540
isfreeaccess_bool	false
container_title	Electrochimica acta
authorswithroles_txt_mv	Zheng, Xiaoguang @@aut@@ Wang, Gen @@aut@@ Zhao, Yanhong @@aut@@ Wu, Liyuan @@aut@@ Wang, Yuanjiang @@aut@@ Song, Yanyong @@aut@@ Tian, Peijun @@aut@@ Wang, Xiaojing @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
hierarchy_top_id	300897561
dewey-sort	3540
id	ELV005723191
language_de	englisch
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The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). 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author	Zheng, Xiaoguang
spellingShingle	Zheng, Xiaoguang ddc 540 bkl 35.00 misc Potassium tantalate misc Ethylene glycol electrooxidation misc Electrocatalysis misc Density functional theory Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation
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topic_title	540 DE-600 35.00 bkl Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation Potassium tantalate Ethylene glycol electrooxidation Electrocatalysis Density functional theory
topic	ddc 540 bkl 35.00 misc Potassium tantalate misc Ethylene glycol electrooxidation misc Electrocatalysis misc Density functional theory
topic_unstemmed	ddc 540 bkl 35.00 misc Potassium tantalate misc Ethylene glycol electrooxidation misc Electrocatalysis misc Density functional theory
topic_browse	ddc 540 bkl 35.00 misc Potassium tantalate misc Ethylene glycol electrooxidation misc Electrocatalysis misc Density functional theory
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title	Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation
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title_full	Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation
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author_browse	Zheng, Xiaoguang Wang, Gen Zhao, Yanhong Wu, Liyuan Wang, Yuanjiang Song, Yanyong Tian, Peijun Wang, Xiaojing
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title_sort	controllable morphology of pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation
title_auth	Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation
abstract	In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x.
abstractGer	In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x.
abstract_unstemmed	In this work, potassium tantalates (KxTaxO3x, x = 1 or 2) with different crystal structures and morphologies are synthesized with a one-step hydrothermal method. The concentration of the KOH reactant played a crucial role in controlling the morphology of KxTaxO3x. When the concentration of KOH is low, an octahedral pyrochlore (K2Ta2O6) is obtained. In contrast, the cubic perovskite (KTaO3) is obtained at high KOH concentrations. Pd nanoparticles loaded onto K2Ta2O6 and KTaO3 (Pd/K2Ta2O6, Pd/KTaO3) electrocatalysts are then prepared with reflux reduction in ethanol. X-ray photoelectron spectroscopy results imply that the loading palladium is in the main Pd° form. The electrocatalytic activity of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts is investigated using cyclic voltammetry (CV) toward ethylene glycol (EG) oxidation in an alkaline medium. The CV results show that Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts modified glassy carbon electrodes have excellent catalytic activity for EG electrooxidation in an alkaline medium, superior to that of commercial Pd/C (10%). The enhancement of their electrocatalytic activity was owing to the synergistic reaction between Pd and KxTaxO3x. In addition, the electronic structure of the Pd/K2Ta2O6 and Pd/KTaO3 electrocatalysts was assessed using density functional theory. The calculation results indicated that electron transfer occurred in the complex region of Pd and KxTaxO3x.
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title_short	Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation
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author2	Wang, Gen Zhao, Yanhong Wu, Liyuan Wang, Yuanjiang Song, Yanyong Tian, Peijun Wang, Xiaojing
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doi_str	10.1016/j.electacta.2021.137978
up_date	2024-07-06T18:56:30.128Z
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Controllable morphology of Pd-loaded potassium tantalates with high catalytic performance for ethylene glycol electrooxidation

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