调控硫化锌中过渡金属离子的掺杂状态以增强光催化活性。
Modulating the doping state of transition metal ions in ZnS for enhanced photocatalytic activity.
作者信息
Bao Linping, Ren Xiaohui, Liu Chengyin, Liu Xin, Dai Chunhui, Yang Yong, Bououdina Mohamed, Ali Sajjad, Zeng Chao
机构信息
Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, PR China.
The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR China.
出版信息
Chem Commun (Camb). 2023 Sep 19;59(75):11280-11283. doi: 10.1039/d3cc03436d.
Transition metal ions (M = Ag, Cu, Co, and Cr) are surface or homogeneously doped into ZnS facile cation-exchange reaction, and while Ag and Cu doping does not induce sulphur vacancies (V) or zinc vacancies (V), Co and Cr doping induces V. The surface doped catalysts exhibit greatly higher activity than the ZnS and homogenous doped catalysts for H evolution and CO reduction. The important role of the doping state on affecting the photo-absorption, carrier separation efficiency, and photoreaction kinetics has been systemically investigated and proposed. This work sheds light on the future design and fabrication of high-performance photocatalysts by element doping.
过渡金属离子（M = Ag、Cu、Co和Cr）通过简便的阳离子交换反应被表面掺杂或均匀掺杂到ZnS中，虽然Ag和Cu掺杂不会诱导硫空位（V）或锌空位（V），但Co和Cr掺杂会诱导V。表面掺杂的催化剂在析氢和CO还原方面表现出比ZnS和均匀掺杂的催化剂高得多的活性。系统地研究并提出了掺杂状态对光吸收、载流子分离效率和光反应动力学的重要影响。这项工作为通过元素掺杂设计和制造高性能光催化剂提供了思路。
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