In Search of Excellence: Convex versus Concave Noble Metal Nanostructures for Electrocatalytic Applications
In Search of Excellence: Convex versus Concave Noble Metal Nanostructures for Electrocatalytic Applications
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DOI：
10.1002/adma.202004554
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发表时间：
2021-02-22
影响因子：
29.4
通讯作者：
Yamauchi, Yusuke
中科院分区：
文献类型：
--
作者：
Iqbal, Muhammad;Bando, Yoshio;Yamauchi, Yusuke
控制贵金属纳米粒子的形状是电催化中一项具有挑战性但重要的任务。除了中空和纳米笼结构外，凹形贵金属纳米颗粒被认为是一类新型的非常规电催化剂，与传统纳米颗粒（包括凸形和扁平纳米颗粒）相比，其表现出优异的电催化性能。本文讨论了文献中报道的几种简便且高度可重复的合成纳米结构凹面贵金属材料的路线，以及它们相对于凸面贵金属纳米颗粒的优点。此外，还提出了优化合成程序和增强凹形金属纳米颗粒电催化特性的可能方法。具有凹面特征的纳米结构贵金属表现出更好的催化活性和稳定性，从而提高了其在电催化中的实际应用性。
Controlling the shape of noble metal nanoparticles is a challenging but important task in electrocatalysis. Apart from hollow and nanocage structures, concave noble metal nanoparticles are considered a new class of unconventional electrocatalysts that exhibit superior electrocatalytic properties as compared with those of conventional nanoparticles (including convex and flat ones). Herein, several facile and highly reproducible routes for synthesizing nanostructured concave noble metal materials reported in the literature are discussed, together with their advantages over noble metal nanoparticles with convex shapes. In addition, possible ways of optimizing the synthesis procedure and enhancing the electrocatalytic characteristics of concave metal nanoparticles are suggested. Nanostructured noble metals with concave features are found to show better catalytic activity and stability hence improve their practical applicability in electrocatalysis.