二硫化钼
异质结
光催化
铜
可见光谱
酞菁
钼
材料科学
二硫键
还原(数学)
酞菁铜
光化学
化学工程
无机化学
化学
纳米技术
光电子学
催化作用
冶金
有机化学
生物化学
几何学
数学
工程类
作者
Ali Haider,Min Liu,Sharafat Ali,Ahmad Ali,Pir Muhammad Ismail,Rizwan Ullah,Sajjad Ali,Fazal Raziq,M. Bououdina,Salman Hayat,Usman Ali,Yuanyuan Zhou,Xiaoqiang Wu,Li Zhong,Linyu Zhu,Haiyan Xiao,Pengfei Xia,Liang Qiao
标识
DOI:10.1016/j.jcis.2024.03.110
摘要
Constructing a heterojunction by combining two semiconductors with similar band structures is a successful approach to obtaining photocatalysts with high efficiency. Herein, a CuPc/DR-MoS2 heterojunction involving copper phthalocyanine (CuPc) and molybdenum disulfide with S-rich vacancies (13.66 %) is successfully prepared by the facile hydrothermal method. Experimental results and theoretical calculations firmly demonstrated that photoelectrons exhibit an S-scheme charge transfer mechanism in the CuPc/DR-MoS2 heterojunction. The S-scheme heterojunction system has proven significant advantages in promoting the charge separation and transfer of photogenerated carriers, enhancing visible-light responsiveness, and achieving robust photoredox capability. As a result, the optimized 3CuPc/DR-MoS2 S-scheme heterojunction exhibits photocatalytic yields of CO and CH4 at 200 and 111.6 μmol g-1h−1, respectively. These values are four times and 4.5 times greater than the photocatalytic yields of pure DR-MoS2This study offers novel perspectives on the advancement of innovative and highly effective heterojunction photocatalysts.
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