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Direct Z-scheme CdS-CdS Nanorod Arrays Photoanode: Synthesis,Characterization and Photoelectrochemical Performance

直接Z型CdO-CdS纳米棒阵列的制备及其光电催化性能研究(英文)
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摘要 Direct Z-scheme CdO-CdS 1-dimensional nanorod arrays were constructed through a facile and simple hydrothermal process. The structure, morphology, photoelectrochemical properties and H2 evolution activity of this catalyst were investigated systematically. The morphology of the obtained nanorod is a regular hexagonal prism with 100-200 nm in diameter. The calcination temperature and time were optimized carefully to achieve the highest photoelectrochemical performance. The as-fabricated hybrid system achieved a photocurrent density up to 6.5 mA/cm2 and H2 evolution rate of 240 μmol·cm-2·h-1 at 0 V vs. Ag/AgCl, which is about 2-fold higher than that of the bare CdS nanorod arrays. The PEC performance exceeds those previously reported similar systems. A direct Z-scheme photocatalytic mechanism was proposed based on the structure and photoelectrochemical performance characterization results, which can well explain the high separation efficiency of photoinduced carriers and the excellent redox ability.
作者 Yi Fan Zhi-min Song Jing-jing Dong Zhi-yu Wang Yue Yang Xiao-di Zhu Song Sun Chen Gao Jun Bao 樊奕;宋治敏;董晶晶;王徵羽;杨越;朱晓娣;孙松;高琛;鲍骏(中国科学技术大学国家同步辐射实验室,能源材料化学协同创新中心,安徽省高等学校表面与界面化学与能源催化重点实验室,合肥230029;安徽大学化学化工学院,合肥230601;中国科学院北京高等科学与创新中心,北京101407)
出处 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2019年第6期715-720,I0003,I0025-I0031,共14页 化学物理学报(英文)
基金 supported by the National Natural Science Foundation of China(No.U1632273,No.21673214,No.U1732272,and No.U1832165)
关键词 Direct Z-scheme CdO-CdS One-Dimensional nanorod arrays PEC performance H2 evolution rate 直接Z型结构 CdO-CdS 一维纳米棒阵列 光电催化 产氢速率
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