Non-noble metal ultrathin MoS2 nanosheets modified Mn0.2Cd0.8S heterostructures for efficient photocatalytic H2 evolution with visible light irradiation. (16th October 2020)

• Record Type: Journal Article
• Authors: Liu, Xiaoming; Chen, Xueya; Xu, Luping; Wu, Binquan; Tu, Xinman; Luo, Xubiao; Yang, Fang; Lin, Jun
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 51(2020)
• Page Start: 26770
• Page End: 26784
• Publication Date: 2020-10-16
• Subjects: MoS2/Mn0.2Cd0.8S composite -- Hydrogen evolution -- Heterostructure; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.07.086
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: A series of non-noble metal ultrathin MoS2 nanosheets modified Mn0.2 Cd0.8 S heterostructured composites were prepared by an ultrasonic assisted hydrothermal synthesis process. Comparing with the pristine Mn0.2 Cd0.8 S composite, the obtained ultrathin MoS2 /Mn0.2 Cd0.8 S composites exhibited a significantly improved photocatalytic activity for hydrogen evolution from water with visible light response. The optimized photocatalytic activity toward MoS2 /Mn0.2 Cd0.8 S composite is around 8 times of the pristine Mn0.2 Cd0.8 S composite. Moreover, the ultrathin MoS2 /Mn0.2 Cd0.8 S composites displayed good photocatalytic stability in the course of photochemical reaction. The excellent photocatalytic activity of the ultrathin MoS2 /Mn0.2 Cd0.8 S composites might be attributed to the formed heterojunctions in composites itself and the sufficient active edge sites in MoS2 phase. A possible photocatalytic mechanism was tentatively proposed. Considering its excellent photocatalytic activity and good photochemical stability, the obtained ultrathin MoS2 /Mn0.2 Cd0.8 S composite has potential application in photocatalytic hydrogen evolution from water by using solar energy. Graphical abstract: Ascribed to the existence of heterojunctions in composite itself and the sufficient active edge sites in MoS2 phase, the obtained ultrathin MoS2 /Mn0.2 Cd0.8 S composites exhibit a significantly improved photocatalytic activity for hydrogen evolution from water with visible light response comparing with the pristine Mn0.2 Cd0.8 S composite. Image 1 Highlights: The UT-MSMCS composite exhibits a significantly high photocatalytic activity. The UT-MSMCS composite shows excellent photochemical stability. A possible mechanism for UT-MSMCS composite has been tentatively proposed.