Fabricating Ru single atoms and clusters on CoP for boosted hydrogen evolution reaction
Fabricating Ru single atoms and clusters on CoP for boosted hydrogen evolution reaction
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DOI：
10.1016/j.cjsc.2023.100035
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发表时间：
2023-06-07
影响因子：
2.2
通讯作者：
Zhong, Wenwu
中科院分区：
文献类型：
--
作者：
Wang, Xiaoqi;Zhang, Jitang;Zhong, Wenwu
单原子催化剂是贵金属利用效率最高的催化剂。然而，贵重单原子和团簇的协同效应尚未得到充分的探讨。本研究以制备好的CoOOH和RuCl3混合物为原料，采用简易同步磷化方法，在CoP衬底上同时制备Ru单原子和团簇。结果表明，Co和Ru元素之间存在强电荷转移，从而形成电子充足的Ru位。结果表明，钌修饰的CoP具有优异的HER电催化活性，其过电位为32 mV，电流密度为10 mA/cm2， Tafel斜率为37.6 mV/dec，远优于纯CoP。这项工作为探索在过渡金属磷化物衬底上制备贵金属单原子和团簇的协同效应提供了见解。
Single atom catalysts (SATs) process the highest utilization efficiency of noble metals. The synergistic effect of noble single atoms and clusters, however, is insufficiently explored. In this work, Ru single atoms and clusters are fabricated on CoP substrate simultaneously, using a facile synchronous phosphorization method, with preprepared CoOOH and RuCl3 mixture as the raw materials. It is demonstrated that strong charge transfer is established between Co and Ru elements, which leads to electron-sufficient Ru sites. As a result, the Ru species decorated CoP exhibits excellent electrocatalytic activity for HER, with an overpotential of 32 mV to afford a current density of 10 mA/cm2 and a Tafel slope of 37.6 mV/dec, much better than the pure CoP counterpart. This work provides insights into the exploration of synergistic effect of noble metal single atoms and clusters fabricated on transition metal phosphide substrate.