Zhao Yang, Wang Hui, Zhao Wei, Zhao Xueli, Xu Jing-Juan, Chen Hong-Yuan
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.
ACS Appl Mater Interfaces. 2021 Feb 10;13(5):6515-6521. doi: 10.1021/acsami.0c20544. Epub 2021 Jan 29.
The development of novel electrocatalysts, especially Pt-free electrocatalysts, is of great significance for evolving hydrogen fuel cells. Two-dimensional materials have many advantages, such as large specific surface area, abundant active edges, and adjustable electronic structure, which provide broad prospects for studying high-performance electrocatalysts. In this paper, CuS@AuS@Au nanoplates (NPs) were synthesized by cation exchange, which showed good catalytic performance toward the hydrogen evolution reaction (HER). Dark-field microscopy can help observe the process of cation exchange in real time to precisely control the synthesis of the composite materials. The synthesized CuS@AuS@Au nanoplates (NPs) exhibited greatly enhanced plasmonic emission, resulting in accelerated chemical conversion and improved HER efficiency. Under 532 nm laser excitation, the overpotential of the HER shifted from 152 to 96 mV at a current density of -10 mA cm. The plasmonic nanocatalysts show exciting prospects in the field of new energy resources.
新型电催化剂的开发，尤其是无铂电催化剂的开发，对于发展氢燃料电池具有重要意义。二维材料具有许多优点，如大比表面积、丰富的活性边缘和可调节的电子结构，这为研究高性能电催化剂提供了广阔前景。本文通过阳离子交换合成了CuS@AuS@Au纳米片（NPs），其对析氢反应（HER）表现出良好的催化性能。暗场显微镜有助于实时观察阳离子交换过程，以精确控制复合材料的合成。合成的CuS@AuS@Au纳米片（NPs）表现出大大增强的等离子体发射，从而加速了化学转化并提高了HER效率。在532nm激光激发下，在电流密度为-10mA cm时，HER的过电位从152mV降至96mV。等离子体纳米催化剂在新能源领域展现出令人兴奋的前景。
