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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >From monometallic Au nanowires to trimetallic AuPtRh nanowires: interface control for the formic acid electrooxidation
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From monometallic Au nanowires to trimetallic AuPtRh nanowires: interface control for the formic acid electrooxidation

机译：从单金属Au纳米线到Trimetallic Auptrh纳米线：甲酸电氧化的界面控制

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摘要

Developing an easy-to-expand synthetic method for nanostructures is highly desired, which will help in investigating the effect of the type and content of the extended component on catalytic performance. Based on original Au nanowires (NWs), we design a two-step interface control strategy to synthesize a series of bimetallic AuPt NWs and trimetallic AuPtRh NWs for the formic acid oxidation reaction (FAOR). By controlling the proportion of Au and Pt, a Au/Pt interface can achieve a AuPt alloy structure, which makes Au6Pt1/C show a complete direct dehydrogenation pathway for the FAOR. The further design and fabrication of an advanced Au/Pt/Rh interface are proved to be more active than the Au/Pt interface for the FAOR. The mechanism analysis and experimental results demonstrate that Rh atoms on the Au/Pt/Rh interface can provide active hydroxyl species, so that the adsorption of formate and the desorption of generated hydrogen species are promoted at Pt atoms on the Au/Pt/Rh interface. Consequently, Au6Pt1Rh0.5/C electrocatalysts exhibit excellent mass activity (8.05 A mg(Pt)(-1)) and specific activity (14.3 mA cm(-2)) for the FAOR, which exceed those of most of the reported Pt-based or Pd-based electrocatalysts.
机译：开发用于纳米结构的易于扩展的合成方法是高度期望的，这将在研究对催化性能的类型和扩展的成分的含量的影响有所帮助。基于原始的Au纳米线（NWS），我们设计了两个步骤的接口控制策略来合成系列双金属的AuPt纳米线和三金属AuPtRh纳米线为甲酸氧化反应（FAOR）。通过控制Au及Pt的比例，一个型Au / Pt界面可以实现的AuPt合金结构，这使得Au6Pt1 / C示出了用于FAOR一个完整的直接脱氢通路。一种先进的Au /铂/铑界面的进一步设计和制造被证明比金/铂界面粮农组织代表更加活跃。机理分析和实验结果表明，在Au /铂/铑接口上的Rh原子可以提供活性羟基物种，使甲酸的吸附和产生的氢气物质的解吸是在金/铂/铑界面上的Pt原子促进。因此，Au6Pt1Rh0.5 / C电催化剂表现出优异的质量活性（8.05毫克阿（PT）（ - 1））和比活度（14.3毫安厘米（-2）），用于粮农组织代表，这超过那些大部分报道的铂 - 基于或Pd为基础的电催化剂。

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    Li Fumin; Ding Yu; Xiao Xue; Yin Shibin; Hu Mancheng; Li Shuni; Chen Yu;

  • 作者单位

    Shaanxi Normal Univ Key Lab Macromol Sci Shaanxi Prov Sch Chem &

    Chem Engn Xian 710062 Shaanxi Peoples R China;

    Shaanxi Normal Univ Key Lab Macromol Sci Shaanxi Prov Sch Chem &

    Chem Engn Xian 710062 Shaanxi Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Shaanxi Key Lab Adv Energy Devices Key Lab Appl Surface &

    Colloid Chem MOE Xian 710062 Shaanxi Peoples R China;

    Guangxi Univ Guangxi Key Lab Electrochem Energy Mat Nanning 530004 Peoples R China;

    Shaanxi Normal Univ Key Lab Macromol Sci Shaanxi Prov Sch Chem &

    Chem Engn Xian 710062 Shaanxi Peoples R China;

    Shaanxi Normal Univ Key Lab Macromol Sci Shaanxi Prov Sch Chem &

    Chem Engn Xian 710062 Shaanxi Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Shaanxi Key Lab Adv Energy Devices Key Lab Appl Surface &

    Colloid Chem MOE Xian 710062 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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