Trimetallic Mesoporous AuCuNi Electrocatalysts with Controlled Compositions Using Block Copolymer Micelles as Templates,Small Methods

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Trimetallic Mesoporous AuCuNi Electrocatalysts with Controlled Compositions Using Block Copolymer Micelles as Templates
Small Methods ( IF 10.7 ) Pub Date : 2018-10-15 , DOI: 10.1002/smtd.201800283
Asep Sugih Nugraha ₁ , Victor Malgras ₁ , Jeonghun Kim _{2,

3} , Jiang Bo ₁ , Cuiling Li ₁ , Muhammad Iqbal ₁ , Yusuke Yamauchi _{2,

3,

4} , Toru Asahi ₅

Affiliation

Nanostructure engineering is important in the development of metal‐based catalysts to improve material utilization efficiency and catalytic activity. Among the available nanoscale architectures, mesoporous structures have raised much attention due to their large surface area and their highly accessible inner sites for guest species, suitable for a wide range of applications. Gold (Au)‐based materials are promising catalysts thanks to their stability, nontoxicity, and good resistance to poisoning effects. Modifying the composition by introducing inexpensive metals to prepare multicomponent Au‐based catalysts is an effective route to both reduce the cost and improve the catalytic activity. Herein, a polymeric micelle assembly approach to synthesize mesoporous AuCuNi ternary alloy films by electrochemical deposition is reported. This simple method involves the co‐electrodeposition process of Au, Cu, and Ni precursors at fixed applied potential in the presence of polymeric micelles acting as a sacrificial template. The compositional ratio can be easily adjusted to optimize the catalytic performance of the mesoporous AuCuNi films, which show promising results for glucose oxidation and methanol oxidation reactions. It is believed that mesoporous AuCuNi films can be desirable to satisfy the needs for the next generation of multifunctional catalyst.

中文翻译：

具有嵌段共聚物胶束作为模板的可控组成的三金属介孔AuCuNi电催化剂

纳米结构工程对于金属基催化剂的开发非常重要，以提高材料的利用效率和催化活性。在可用的纳米级结构中，介孔结构因其较大的表面积和高度可访问的客体内部位点而引起了广泛的关注，适用于广泛的应用。基于金（Au）的材料具有稳定性，无毒性和良好的抗中毒作用，因此是有前途的催化剂。通过引入廉价的金属以制备多组分金基催化剂来改变组成，是降低成本和提高催化活性的有效途径。在本文中，报道了通过电化学沉积合成中孔AuCuNi三元合金膜的聚合物胶束组装方法。这种简单的方法涉及在固定的施加电势下，在作为牺牲模板的聚合物胶束的存在下，对Au，Cu和Ni前驱体进行共电沉积工艺。可以容易地调节组成比以优化介孔AuCuNi膜的催化性能，这对于葡萄糖氧化和甲醇氧化反应显示出有希望的结果。据信，可能需要中孔AuCuNi膜来满足下一代多功能催化剂的需求。对葡萄糖氧化和甲醇氧化反应显示出令人鼓舞的结果。据信，可能需要中孔AuCuNi膜来满足下一代多功能催化剂的需求。对葡萄糖氧化和甲醇氧化反应显示出令人鼓舞的结果。据信，可能需要中孔AuCuNi膜来满足下一代多功能催化剂的需求。

更新日期：2018-10-15

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