首页|Two-dimensional bimetallic selenium-containing metal-organic frameworks and their calcinated derivatives as electrocatalysts for overall water splitting

Two-dimensional bimetallic selenium-containing metal-organic frameworks and their calcinated derivatives as electrocatalysts for overall water splitting

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The use of two-dimensional(2D)layered metal-organic frameworks(MOFs)as self-sacrificial tem-plates has been proven to be a successful method to create high-efficiency Selenium(Se)-containing electrocatalysts for overall water splitting.Herein,two strategies are then utilized to introduce Se element into the Co-Fe MOF,one being the etching of as-prepared MOF by SeO2 solution,and the other,the replacing of SCN-with SeCN-as the construction unit.The electrochemical activity of the pristine 2D MOF and their calcinated derivatives for catalyzing the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)is evaluated and further discussed.It is found that the effect of introducing Se on improving electrochemical catalytic activity is significant for the HER process.Specifically,the calcinated derivative in the replacing method exhibits an overpotential of 235 mV for HER and 270 mV for OER at a current density of 10 mA/cm2.For comparing the two methods of introducing Se element into MOF,similar electrocatalytic activity can be achieved on the their calcinated derivatives.The high electrochemical performance of 2D CoFe-MOF derivatives may be resulted from the unique 2D hierarchical porous structure and strong synergistic effect between different components in the material.

2D MOFselenium(Se)-containing materialshydrogen evolution reaction(HER)oxygen evolution reaction(OER)

Zhao-ting SHANG、Tang-ming LI、Bing-qian HU、Min LIU、Wang-ting LU、Fan YU、Yun ZHENG

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Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education,College of Optoelectronic Materials and Technology,Jianghan University,Wuhan 430056,China

Institute of New Energy Materials and Engineering,School of Materials Science and Engineering,Fuzhou University,Fuzhou 350108,China

Department of Chemical Engineering,University of Waterloo,Waterloo,Ontario N2L 3G1,Canada

National Natural Science Foundation of ChinaExcellent Discipline Cultivation Project of Jianghan University,ChinaFundamental Research Funds for State Key Laboratory of Precision Blasting of Jianghan University,ChinaMinjiang Scholar Program of Fujian Province,China

222507106762023XKZ039PBSKL2022202

2024

10.1007/s11708-024-0924-x

能源前沿
高等教育出版社

能源前沿

CSTPCDEI
影响因子：0.2
ISSN：2095-1701
年,卷(期)：2024.18(3)