贵金属纳米框架设计合成及电催化性能的研究进展

由超薄边框相互连接形成的贵金属纳米框架以负载量低、活性高等优势在多相催化领域受到了广泛关注.纳米框架独特的三维开放可及性结构不仅能够在边缘和顶点处暴露出更多的活性位点,提高贵金属活性位点利用率,还可以将反应底物限制在纳米范围内,增加底物分子碰撞的几率.本文综合评述了贵金属纳米框架材料的合成策略,总结了近年来贵金属纳米框架催化剂在电催化领域的研究进展,并对其未来发展方向和面临的挑战进行了展望.

Synthesis Methods and Electrocatalytic Performance of Noble-metal Nanoframes Catalysts

Noble-metal nanoframes connected by ultrathin frames have attracted extensive attention in the field of heterogeneous catalysis due to their advantages of low loading capacity and high activity. The unique 3D open accessibility structure of the nanoframes can not only expose more active sites at the edges and vertices， improving the utilization rate of noble metal active sites， but also limit the reaction substrates to the nanoscale， increasing the chance of substrate molecules colliding. At present， researchers have proposed a variety of synthesis methods for noble-metal nanoframes， including crystal etching method， sacrificial template method， self-assembly method and so on. Their applications in catalysis and energy storage have also been explored. In this review， we summarized the synthesis strategies of noble metal nanoframes and their applications in the field of electrocatalysis in recent years， and put forward the prospect of its future development direction and challenges.