Synthesis of MoS2/MoO3 nano-heterojunction towards enhanced photocatalytic activity under LED light irradiation via in situ oxidation sintering

Jianfeng Qiu; Yanping Liu; Minxian Cao; Luqi Xie; Yongkun Liu; Hongwen Li; Junqiang Lu; Qifeng Liang; Jiaqi Pan; Chaorong Li

doi:10.1039/d4ra05673f

Synthesis of MoS₂/MoO₃ nano-heterojunction towards enhanced photocatalytic activity under LED light irradiation via in situ oxidation sintering

RSC Adv. 2024 Oct 29;14(47):34606-34610. doi: 10.1039/d4ra05673f.

Authors

Jianfeng Qiu^{1

2}, Yanping Liu², Minxian Cao², Luqi Xie², Yongkun Liu², Hongwen Li², Junqiang Lu², Qifeng Liang², Jiaqi Pan^{1

3}, Chaorong Li¹

Affiliations

¹ College of Textile Science and Engineering, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China [email protected].
² Department of Physics, Shaoxing University Shaoxing 312000 P. R. China.
³ Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China.

Abstract

The MoS₂/MoO₃ nano-heterojunction photocatalyst was synthesized via the in situ oxidation sintering method. The properties of the samples were characterized by XRD, SEM, EDX, TEM, UV-vis, PL, FT-IR, BET and electrochemical techniques. The MoS₂/MoO₃ nano-heterojunction (MS-400) exhibited significantly better photocatalytic activity toward Rhodamine B degradation (0.42634 h^-1) than monomer MoS₂ (∼8.0-folds) and MoO₃ (∼25.6-folds). This is mainly attributed to the MoS₂/MoO₃ heterojunction interface having an appropriate potential gradient that can promote the interface carrier transportation/separation to optimize the carrier efficiency and increase the solar absorption and specific surface areas/active sites via microstructures.