Air-condition process for scalable fabrication of CdS/ZnS 1D/2D heterojunctions toward efficient and stable photocatalytic hydrogen production

作     者：Dongdong Zhang Jie Teng Hongli Yang Zhi Fang Kai Song Lin Wang Huilin Hou Xianlu Lu Chris RBowen Weiyou Yang Dongdong Zhang;Jie Teng;Hongli Yang;Zhi Fang;Kai Song;Lin Wang;Huilin Hou;Xianlu Lu;Chris R.Bowen;Weiyou Yang

作者机构：College of Materials Science and EngineeringHunan UniversityChangshaPeople's Republic of China Institute of Micro/Nano Materials and DevicesNingbo University of TechnologyNingboZhejiangPeople's Republic of China Department of Mechanical EngineeringUniversity of BathBathUK 

出 版 物：《Carbon Energy》 (碳能源（英文）)

年 卷 期：2023年第5卷第7期

页      面：1-14页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Hunan Provincial Innovation Foundation for Postgraduate,Grant/Award Number:CX20200454 National Natural Science Foundation of China,Grant/Award Number:51972178 

主　　题：air condition CdS heterojunctions photocatalytic hydrogen production ZnS 

摘      要：We report the scalable fabrication of CdS/ZnS 1D/2D heterojunctions under ambient air conditions(i.e.,room temperature and atmospheric pressure)in which ZnS nanoparticles are anchored on the surface of CdS *** as-formed heterojunctions exhibit a significantly enhanced photocatalytic H_(2) evolution rate of 14.02 mmol h^(-1) g^(-1) when irradiated with visible light,which is~10 and 85 times higher than those of pristine CdS nanosheets and CdS nanoparticles,respectively,and superior to most of the CdS-based photocatalysts reported to ***,they provide robust photocatalytic performance with demonstratable stability over 58 h,indicating their potential for practical *** formation of 1D/2D heterojunctions not only provides improved exposed active sites that respond to illumination but also provides a rapid pathway to generate photogenerated carriers for efficient separation and transfer through the matrix of single-crystalline CdS *** addition,first-principles simulations demonstrate that the existence of rich Zn vacancies increases the energy level of the ZnS valence band maximum to construct type-II and Z-scheme mixed heterojunctions,which plays a critical role in suppressing the recombination of carriers with limited photocorrosion of CdS to enhance photocatalytic behavior.