Novel polymer supported graphene and molybdenum sulfide as highly efficient cocatalyst for photocatalytic hydrogen evolution. (27th September 2018)

• Record Type: Journal Article
• Authors: Mu, Haiyan; Wan, Junfen; Wu, Yuanwang; Xu, Juan; Wang, Le; Cao, Xuejun
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 39(2018)
• Page Start: 18105
• Page End: 18114
• Publication Date: 2018-09-27
• Subjects: Photocatalyst -- Graphene -- Polymer support -- Molybdenum sulfide; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.06.129
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Exploiting photocatalysts with environmental friendliness, noble-metal-free and high efficiency is a great challenge for photocatalytic hydrogen evolution. In this work, we synthesized a novel MoS2 /rGO/Cd0.6 Zn0.4 S composite catalyst based on microsphere-structural polymer with highly efficient photocatalytic activity under visible light irradiation. The 5.0%MoS2 /rGO/Cd0.6 Zn0.4 S exhibited the highest H2 evolution rate of 11.7 mmol/h/g, which about 2.1 times higher than that without MoS2 and 4 times higher than that without PSGM. This superior photocatalytic activity, further demonstrated by the transient photocurrent responses and electrochemical impedance spectrum, was attributed to the effective separation of the photo-generated charge carriers promoted by the positive synergetic effect between the MoS2 and graphene. This study provided a promising approach to achieve high-efficiency H2 evolution based on graphene and MoS2 without noble metals. Highlights: A polymer supported structure for novel MoS2 /rGO/Cd0.6 Zn0.4 S composite catalyst. 5%MoS2 /rGO/Cd0.6 Zn0.4 S exhibited the highest H2 production rate of 11.7 mmol/h/g. The positive synergetic effect between the MoS2 and graphene.