Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution

作     者：Jingjing Wang Cheng Hu Yihe Zhang Hongwei Huang 王晶晶;胡程;张以河;黄洪伟

作者机构：Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of GeosciencesBeijing 100083China 

基　　金：国家自然科学基金(51972288,51672258) 中央高校基础研究经费(2652018287) 

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

年 卷 期：2022年第43卷第5期

页      码：1277-1285页

摘      要：Piezocatalytic hydrogen evolution has emerged as a promising direction for the collection and utilization of mechanical energy and the efficient generation of sustainable energy throughout the *** CdS,as an established semiconductor photocatalyst,has been widely investigated for splitting water into H_(2),while its piezocatalytic performance has attracted less attention,and the relationship between the structure and piezocatalytic activity remains ***,two types of CdS nanostructures,namely CdS nanorods and CdS nanospheres,were prepared to probe the above‐mentioned *** ultrasonic vibration,the CdS nanorods afforded a superior piezocatalytic H_(2) evolution rate of 157μmol g^(−1)h^(−1)in the absence of any co‐catalyst,which is nearly 2.8 times that of the CdS *** higher piezocatalytic activity of the CdS nanorods is derived from their larger piezoelectric coefficient and stronger mechanical energy harvesting capability,affording a greater piezoelectric potential and more efficient separation and transfer of intrinsic charge carriers,as elucidated through piezoelectric response force microscopy,finite element method,and piezoelectrochemical *** study provides a new concept for the design of efficient piezocatalytic materials for converting mechanical energy into sustainable energy via microstructure regulation.

主 题 词：CdS Piezocatalysis Hydrogen evolution One‐dimensional nanorod Charge separation 

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

核心收录：

D　O　I：10.1016/S1872-2067(21)63976-1

馆 藏 号：203109818...