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Enhanced Electrocatalytic Oxidation of Methanol on Pt‐Decorated Bi2WO6/Graphene Nanosheets with Visible Light Assistance
Energy Technology ( IF 3.6 ) Pub Date : 2020-07-02 , DOI: 10.1002/ente.202000210 Haifeng Gao 1 , Chen Yuan 1 , Zhilong He 1 , Qiyan Xu 2 , Chunyang Zhai 1 , Mingshan Zhu 3
Energy Technology ( IF 3.6 ) Pub Date : 2020-07-02 , DOI: 10.1002/ente.202000210 Haifeng Gao 1 , Chen Yuan 1 , Zhilong He 1 , Qiyan Xu 2 , Chunyang Zhai 1 , Mingshan Zhu 3
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Noble metal/semiconductor–based electrocatalysts have been proverbially used as the anode material in direct methanol fuel cells (DMFCs) recently. Combined with the advantage of the properties of noble metals and semiconductors, photo‐assisted electrocatalytic methanol oxidation is a valid route to increase the catalytic activity of catalysts in DMFCs. Herein, a 2D composite of bismuth tungstate/reduced graphene oxide (Bi2WO6/RGO) with excellent optical, electrical, and thermal stability is used as the support for the decoration of platinum nanoparticles (Pt NPs) to synthesize a new electrocatalyst of Pt‐Bi2WO6/RGO. Under ambient conditions, the methanol oxidation reaction (MOR) activity of the Pt‐Bi2WO6/RGO electrocatalyst increases relative to the Pt/Bi2WO6 electrode. Note that, under visible light irradiation, it deals with big enhancement of methanol oxidation activity on Pt‐Bi2WO6/RGO electrode, highlighting the effect of RGO used as Bi2WO6 cocatalysis for the MOR activity under illumination. Meanwhile, the corresponding reaction mechanisms with/without visible light are presented, and the roles of Pt‐Bi2WO6/RGO for photo‐assisted electrochemical reactions are proposed.
中文翻译：
Pt装饰的Bi2WO6 /石墨烯纳米片上可见光辅助下的甲醇增强电催化氧化
最近，众所周知，贵金属/半导体基电催化剂已被用作直接甲醇燃料电池（DMFC）的阳极材料。结合贵金属和半导体的特性优势，光辅助电催化甲醇氧化是增加DMFC中催化剂催化活性的有效途径。在此，将具有优异的光学，电学和热稳定性的钨酸铋/还原氧化石墨烯（Bi 2 WO 6 / RGO）的二维复合材料用作装饰铂纳米颗粒（Pt NPs）的载体，以合成新型的Pt NPs电催化剂。 Pt-Bi 2 WO 6 / RGO。在环境条件下，Pt-Bi 2 WO的甲醇氧化反应（MOR）活性相对于Pt / Bi 2 WO 6电极，6 / RGO电催化剂增加。请注意，在可见光照射下，它大大增强了Pt-Bi 2 WO 6 / RGO电极上甲醇的氧化活性，突出了RGO用作Bi 2 WO 6共催化对光照下MOR活性的影响。同时，介绍了相应的有/无可见光的反应机理，并提出了Pt-Bi 2 WO 6 / RGO在光辅助电化学反应中的作用。
更新日期：2020-09-05
中文翻译：
Pt装饰的Bi2WO6 /石墨烯纳米片上可见光辅助下的甲醇增强电催化氧化
最近，众所周知，贵金属/半导体基电催化剂已被用作直接甲醇燃料电池（DMFC）的阳极材料。结合贵金属和半导体的特性优势，光辅助电催化甲醇氧化是增加DMFC中催化剂催化活性的有效途径。在此，将具有优异的光学，电学和热稳定性的钨酸铋/还原氧化石墨烯（Bi 2 WO 6 / RGO）的二维复合材料用作装饰铂纳米颗粒（Pt NPs）的载体，以合成新型的Pt NPs电催化剂。 Pt-Bi 2 WO 6 / RGO。在环境条件下，Pt-Bi 2 WO的甲醇氧化反应（MOR）活性相对于Pt / Bi 2 WO 6电极，6 / RGO电催化剂增加。请注意，在可见光照射下，它大大增强了Pt-Bi 2 WO 6 / RGO电极上甲醇的氧化活性，突出了RGO用作Bi 2 WO 6共催化对光照下MOR活性的影响。同时，介绍了相应的有/无可见光的反应机理，并提出了Pt-Bi 2 WO 6 / RGO在光辅助电化学反应中的作用。
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