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首页> 外文期刊>Crystal growth & design >Concentration-Mediated Shape Evolution of Palladium Nanocrystals and Their Structure-Electrocatalytic Functionality
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Concentration-Mediated Shape Evolution of Palladium Nanocrystals and Their Structure-Electrocatalytic Functionality

机译：浓度介导的钯纳米晶体形状演化及其结构 - 电催化官能度

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摘要

We reported a new insight into electrochemical shape evolution of Pd nanocrystals by controlling the concentration of Pd precursor, while the lower (E-L) and upper (E-U) potential limits of the square-wave potential were optimized at -0.8 and 0 V, respectively. It was found that the ratio (R) of the growth rate in the < 100 > to that of the < 111 > on a crystal increased with the concentration of PdCl2 getting higher in the reaction, leading to the shape transformation of Pd polyhedron from cubes to truncated octahedra, and finally to octahedra. The electrooxidation performances of CO and formic acid over the as-synthesized Pd polyhedrons were in the order of octahedra < truncated octahedra < cubes, indicating that the electrocatalytic activities of Pd polyhedrons were highly sensitive to the surface structure.
机译：通过控制Pd前体的浓度，我们报告了对Pd纳米晶体的电化学形状演化的新见解，而平方波电位的下部（E-L）和上（E-U）分别在-0.8和0V中进行优化。 结果发现，在晶体中<100>对<111>的生长速率的比率（R）随着反应中的PdCl2越来越高的浓度而增加，导致PD多面体从立方体的形状转换 截断八面八面，终于到了八面八德。 CO和甲酸在AS合成的PD多面体上的电氧化性能是八面体<截短的八面体<立方体的顺序，表明PD多篮的电催化活性对表面结构非常敏感。

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  • 来源
    《Crystal growth & design》 |2019年第3期|共8页
  • 作者

    Wei Lu; Mao Yu-Jie; Wei Yong-Sheng; Li Jian-Wei; Nie Xin-Ming; Zhao Xin-Sheng; Fan You-Jun; Sun Shi-Gang;

  • 作者单位

    Jiangsu Normal Univ Sch Phys &

    Elect Engn Hydrogen Res Lab Energy Storage &

    Applicat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Phys &

    Elect Engn Hydrogen Res Lab Energy Storage &

    Applicat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Phys &

    Elect Engn Hydrogen Res Lab Energy Storage &

    Applicat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Phys &

    Elect Engn Hydrogen Res Lab Energy Storage &

    Applicat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Phys &

    Elect Engn Hydrogen Res Lab Energy Storage &

    Applicat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Phys &

    Elect Engn Hydrogen Res Lab Energy Storage &

    Applicat Xuzhou 221116 Jiangsu Peoples R China;

    Guangxi Normal Univ Sch Chem &

    Pharmaceut Sci Guangxi Key Lab Low Carbon Energy Mat Guilin 541004 Peoples R China;

    Xiamen Univ Coll Chem &

    Chem Engn State Key Lab PCOSS Xiamen 361005 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
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