Fabricating covalent organic framework/CdS S-scheme heterojunctions for improved solar hydrogen generation

作     者：Long Sun Lingling Li Juan Yang Jiajie Fan Quanlong Xu 孙龙;李铃铃;杨娟;范佳杰;徐全龙

作者机构：Key laboratory of Carbon Materials of Zhejiang ProvinceCollege of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325027ZhejiangChina School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450002HenanChina School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006GuangdongChina 

基　　金：国家自然科学基金(21905209,52073263) 河南省自然科学基金(212300410080) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2022年第43卷第2期

页      码：350-358页

摘      要：The fabrication of S-scheme heterojunctions has received considerable attention as an effective approach to promote the separation and migration of photoexcited electron/hole pairs and retain strong redox ***,an imine-based porous covalent organic framework(COF-LZU1)is integrated with controllably fabricated Cd S hollow cubes,resulting in the formation of an S-scheme *** the COF content reaches 1.5 wt%,the COF/Cd S heterostructure(1.5%COF/Cd S)achieves the highest hydrogen generation rate of 8670μmol·h^(-1)·g^(-1),which is approximately 2.1 times higher than that of pure Cd *** apparent quantum efficiency(AQE)of 1.5%COF/Cd S is approximately 8.9%at 420 *** systematic analysis shows that the intimate contact interface and suitable energy band structures between Cd S and COF can induce the formation of an internal electric field at the heterojunction interface,which can effectively drive the spatial separation of photoexcited charge carriers and simultaneously maintain a strong redox ability,thus enhancing the photocatalytic H_(2) evolution performance.

主 题 词：S-scheme Covalent organic framework CdS Photocatalytic H2 production 

学科分类：081702[081702] 081704[081704] 081705[081705] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(21)63869-X

馆 藏 号：203107138...