过电位
过氧化氢
电化学
电催化剂
催化作用
金属
选择性
金属有机骨架
化学工程
化学
电极
无机化学
有机化学
物理化学
工程类
吸附
作者
Mengjun Wang,Xu Dong,Zhao‐Dong Meng,Zhiwei Hu,Yan‐Gu Lin,Chun‐Kuo Peng,Hongshuai Wang,Chih‐Wen Pao,Song‐Yuan Ding,Youyong Li,Qi Shao,Xiaoqing Huang
标识
DOI:10.1002/anie.202100897
摘要
Abstract Two‐dimensional (2D) metal–organic framework nanosheets (MOF NSs) play a vital role in catalysis, but the most preparation is ultrasonication or solvothermal. Herein, a liquid–liquid interfacial synthesis method has been developed for the efficient fabrication of a series of 2D Ni MOF NSs. The active sites could be modulated by readily tuning the ratios of metal precursors and organic linkers (R M/L ). The Ni MOF NSs display highly R M/L dependent activities towards 2e oxygen reduction reaction (ORR) to hydrogen peroxide (H 2 O 2 ), where the Ni MOF NSs with the R M/L of 6 exhibit the optimal near‐zero overpotential, ca. 98 % H 2 O 2 selectivity and production rate of ca. 80 mmol g cat −1 h −1 in 0.1 M KOH. As evidenced by X‐ray absorption fine structure spectroscopy, the coordination environment of active sites changed from saturation to unsaturation, and the partially unsaturated metal atoms are crucial to create optimal sites for enhancing the electrocatalysis.
科研通智能强力驱动
Strongly Powered by AbleSci AI