Remarkably Efficient Carbon-Supported Nanostructured Platinum-Bismuth Catalysts for the Selective Electrooxidation of Glucose and Methyl-Glucoside

Neha N.; Kouame B. S. R.; Rafaideen T.; Baranton S.; Coutanceau C.

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Remarkably Efficient Carbon-Supported Nanostructured Platinum-Bismuth Catalysts for the Selective Electrooxidation of Glucose and Methyl-Glucoside

机译：显着高效的碳负载的纳米结构铂 - 铋催化剂，用于葡萄糖和甲基葡糖苷的选择性电氧化

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Pt/C and Pt9Bi1/C catalysts are synthesized by wet chemistry, characterized by physicochemical and electrochemical methods, and evaluated towards glucose and methyl-glucoside electrooxidation in alkaline medium. Pt9Bi1/C leads to onset potentials 150 to 350 mV lower than those recorded on Pt/C for glucose and methyl-glucoside oxidation, respectively. From in situ infrared spectroscopy, main reaction products of glucose and methyl-glucoside oxidation are gluconate and methyl-glucuronate, respectively. Chronoamperometry is performed for 6 h in a 25-cm(2) electrolysis cell fitted with a Pt9Bi1/C anode to oxidize 18.0 g L-1 glucose and 19.4 g L-1 methyl-glucoside at cell voltages of 0.30 V and 0.50 V, respectively, and a Pt/C cathode to produce hydrogen. Analyses of the reaction products by high-performance liquid chromatography, by C-13 nuclear magnetic resonance, and by mass spectroscopy indicate that gluconate and methyl-glucuronate are formed with 100% faradaic efficiency and 100% selectivity at 40% glucose and 37% methyl-glucoside conversions, respectively.

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来源
《Electrocatalysis》 |2021年第1期|共14页
作者
Neha N.; Kouame B. S. R.; Rafaideen T.; Baranton S.; Coutanceau C.;
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作者单位

Univ Poitiers CNRS UMR IC2MP 7285 4 Rue Michel Brunet TSA 51106 F-86073 Poitiers 9 France;

Univ Poitiers CNRS UMR IC2MP 7285 4 Rue Michel Brunet TSA 51106 F-86073 Poitiers 9 France;

Univ Poitiers CNRS UMR IC2MP 7285 4 Rue Michel Brunet TSA 51106 F-86073 Poitiers 9 France;

Univ Poitiers CNRS UMR IC2MP 7285 4 Rue Michel Brunet TSA 51106 F-86073 Poitiers 9 France;

Univ Poitiers CNRS UMR IC2MP 7285 4 Rue Michel Brunet TSA 51106 F-86073 Poitiers 9 France;

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原文格式 PDF
正文语种 eng
中图分类化学动力学、催化作用;
关键词
Bismuth; Electrooxidation; Glucose; Methyl-glucoside; Platinum; Selectivity;

机译：铋;电氧化;葡萄糖;甲基葡糖苷;铂;选择性;

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Remarkably Efficient Carbon-Supported Nanostructured Platinum-Bismuth Catalysts for the Selective Electrooxidation of Glucose and Methyl-Glucoside

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