电化学
选择性
催化作用
纳米颗粒
化学
过氧化氢
动力学
大规模运输
拉尼奥
化学动力学
纳米技术
材料科学
电极
物理化学
有机化学
生化工程
物理
光电子学
量子力学
电介质
铁电性
工程类
作者
Rui Zhong,Xiaoyu Wang,Qianqian Tao,Jianhua Zhang,Chin E. Lin,Hui Wie,Yi‐Ge Zhou
标识
DOI:10.1002/anie.202207270
摘要
Abstract Selective electrochemical production of valued chemicals is of significant importance but remains a great challenge in chemistry. Conventional approaches for enhancing reaction selectivity focus on the improvement of the catalysts themselves. In this work, we systematically studied the reaction kinetics and mass transport behavior of LaNiO 3 nanocubes (LaNiO 3 NCs) catalyzed hydrogen peroxide reduction reaction (HPRR) at ensemble and single nanoparticle levels using nano‐impact electrochemistry (NIE). We find that the selectivity of HPRR was altered at individual random‐walk nanoparticles as compared to their ensemble counterpart without changing the reaction kinetics, due to the significantly enhanced mass transport at single nanoparticles. This discovery offers the scope of new catalytic approaches for engineering electrochemical reactions in general.
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