Exploration of the Copper Active Sites in Electrooxidation of Glucose on a Copper/Nitrogen Doped Graphene Nanocomposite,The Journal of Physical Chemistry C

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Exploration of the Copper Active Sites in Electrooxidation of Glucose on a Copper/Nitrogen Doped Graphene Nanocomposite
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2015-08-20 00:00:00 , DOI: 10.1021/acs.jpcc.5b05142
Jiong Wang ₁ , Ting-Ting Wang ₁ , Feng-Bin Wang ₁ , Dong-Yang Zhang ₁ , Kang Wang ₁ , Xing-Hua Xia ₁

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Fuel cells applying natural biomass as energy resources are considered to be one type of potential device to substitute traditional energy output of consuming fossil fuels. The practical use of such a device depends on the development of active electrocatalyts preferring to be made of nonprecious elements. Herein, we report a copper nanocomposite with copper nanoparticles and copper(II) ions immobilized on nitrogen-doped graphene, synthesized from a simple pyrolysis approach. The nanocomposite exhibits efficient electrocatalytic capability for glucose oxidation reaction in alkaline electrolytes, and the copper(II) ions are determined as the main active sites. It is shown that the electron density of copper(II) ions, which is tuned by a moderate electron-donating effect from neighboring copper nanoparticles and nitrogen dopants of graphene, might be a general descriptor of electrocatalytic activity.

中文翻译：

铜/氮掺杂石墨烯纳米复合材料在葡萄糖电氧化中铜活性位的探索

使用天然生物质作为能源的燃料电池被认为是替代消耗化石燃料的传统能源输出的一种潜在装置。这种装置的实际使用取决于优选由非贵重元素制成的活性电催化剂的开发。在本文中，我们报告了一种铜纳米复合材料，该复合材料具有铜纳米颗粒和固定在氮掺杂石墨烯上的铜（II）离子，是通过一种简单的热解方法合成的。该纳米复合材料对碱性电解质中的葡萄糖氧化反应表现出有效的电催化能力，并且铜（II）离子被确定为主要的活性位点。结果表明，铜（II）离子的电子密度受邻近的铜纳米颗粒和石墨烯的氮掺杂剂的适度给电子作用所调节，

更新日期：2015-08-20

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