Nitridation-induced metal-organic framework nanosheet for enhanced water oxidation electrocatalysis  

作　　者：Na Yao Hongnan Jia Zhengyin Fan Lu Bai Wei Xie Hengjiang Cong Shengli Chen Wei Luo 

机构地区：[1]College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,Hubei,China [2]College of Chemistry,Nankai University,Tianjin 300071,China [3]Suzhou Institute of Wuhan University,Suzhou 215123,Jiangsu,China

出　　处：《Journal of Energy Chemistry》2022年第1期531-537,I0014,共8页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(21972107 and 51202127);the National Natural Science Foundation of Hubei Province(2020CFA095 and 2016CFB382);the Fundamental Research Funds for the Central Universities(2042017kf0227,2042019kf0205);the National Natural Science Foundation of Jiangsu Province(BK20191186)。

摘　　要：We report the synthesis of nitridation-induced NiFe-MOF through post-synthetic functionalization of terminal ligand in NiFe-MOF nanosheet.We directly identify the key factor of amino ligand in N-NiFe-MOF for boosting the OER performance through combining single X-ray crystallographic characterization and in-situ Raman tracking,as well as ex-situ spectroscopy analysis.Density functional theory(DFT)calculations and experime ntal results indicate irreversible phase rec on structio n from amino ligand oxidation prior to OER could lead to the optimized ΔG_(-O),resulting in the remarkable OER performance with an overpotential of 258 mV to obtain the current density of 100 mA cm^(-2) in 1.0 M KOH solution.Our work will provide new strategy for rational designing advanced MOF-based OER electrocatalysts.

关 键 词：Mt ridation-induced MOF nanosheets In-sicu oxidation OER DFT calculation 

分 类 号：TQ426[化学工程] TB383.1[一般工业技术—材料科学与工程]