High-entropy layered oxides nanosheets for highly efficient photoelectrocatalytic reduction of CO_(2)and application research
作者机构：State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing 100029China Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第4期
页 面：4775-4785页
核心收录：
学科分类：07[理学] 070304[理学-物理化学(含∶化学物理)] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：the financial support from the National Basic Research Program of China(No.2014CB932101) the National Natural Science Foundation of China(Nos.21571013 and 52073023) Program for Chang Jiang Scholars and Innovative Research Team in University(No.IRT1205).
主 题：high-entropy layered oxides(HELOs) CO_(2)reduction layered double hydroxides(LDHs) photoelectrocatalytic
摘 要：High-entropy oxides receive significant attention owing to their“four effects.However,they still suffer from harsh construction conditions such as high temperature and high pressure and present a block-like structure.Herein,in this work,Ni-Mn-Cu-Co-Fe-Al high-entropy layered oxides(HELOs)with a layered nanosheet structure were constructed by a simple pathway of topological transformation under relatively low temperature(300℃)with six-membered Ni-Mn-Cu-Co-Fe-Al layered double hydroxides(LDHs)precursors,which exhibited an outstanding activity and excellent selectivity for CO_(2)photoelectroreduction(obtaining the highest carbon monoxide yield of 909.55μmol·g^(−1)·h^(−1)under−0.8 V vs.reversible hydrogen electrode(RHE),which is almost twice that of pure electrocatalysis).In addition,the charging voltage of a photo-assisted Zn-CO_(2)battery with HELOs as electrode was reduced from 2.62 to 2.40 V;the discharging voltage of the battery was increased from 0.51 to 0.59 V with the assistance of illumination.The improvement of round-trip efficiency of the battery indicates that light played a positive role in both the charging and discharging processes.This study not only lays an important foundation for the development of high-entropy oxides but also expands their application in the field of photoelectrochemistry.
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