Constructing copper Phthalocyanine/Molybdenum disulfide (CuPc/MoS2) S-scheme heterojunction with S-rich vacancies for enhanced Visible-Light photocatalytic CO2 reduction

Haider Ali; Min Liu; Sharafat Ali; Ahmad Ali; Pir Muhammad Ismail; Rizwan Ullah; Sajjad Ali; Fazal Raziq; Mohamed Bououdina; Salman Hayat; Usman Ali; Yuanyuan Zhou; Xiaoqiang Wu; Li Zhong; Linyu Zhu; Haiyan Xiao; Pengfei Xia; Liang Qiao

doi:10.1016/j.jcis.2024.03.110

Constructing copper Phthalocyanine/Molybdenum disulfide (CuPc/MoS₂) S-scheme heterojunction with S-rich vacancies for enhanced Visible-Light photocatalytic CO₂ reduction

J Colloid Interface Sci. 2024 Jul:665:500-509. doi: 10.1016/j.jcis.2024.03.110. Epub 2024 Mar 17.

Authors

Haider Ali¹, Min Liu², Sharafat Ali³, Ahmad Ali⁴, Pir Muhammad Ismail³, Rizwan Ullah³, Sajjad Ali⁵, Fazal Raziq³, Mohamed Bououdina⁶, Salman Hayat³, Usman Ali³, Yuanyuan Zhou³, Xiaoqiang Wu⁷, Li Zhong², Linyu Zhu⁸, Haiyan Xiao⁹, Pengfei Xia¹⁰, Liang Qiao¹¹

Affiliations

¹ Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China; School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China.
² SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of Education Southeast University, Nanjing 210096, China.
³ School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China.
⁴ Department of Chemistry, Abdul Wali Khan University Mardan, KPK, 23200, Pakistan.
⁵ Energy, Water, and Environment Research Lab, Prince Sultan University, Riyadh, Kingdom of Saudi Arabia. Electronic address: sajjad@alum.imr.ac.cn.
⁶ Energy, Water, and Environment Research Lab, Prince Sultan University, Riyadh, Kingdom of Saudi Arabia.
⁷ School of Mechanical Engineering, Chengdu University, Chengdu 610106, China.
⁸ Department of Material and Chemistry, Huzhou University, Huzhou 313000, China.
⁹ Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China; School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. Electronic address: hyxiao@uestc.edu.cn.
¹⁰ Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China. Electronic address: forsky@csj.uestc.edu.cn.
¹¹ Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China; School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. Electronic address: liang.qiao@uestc.edu.cn.

PMID: 38547631
DOI: 10.1016/j.jcis.2024.03.110

Abstract

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-MoS₂. This study offers novel perspectives on the advancement of innovative and highly effective heterojunction photocatalysts.

Keywords: CO(2) reduction; CuPc/DR-MoS(2) hetrojunction; S-scheme Charge transfer; Visible light Catalyst.