AUTHOR=Wang Shujing , Ding Jiajing , Wang Chencheng , Li Wanfei , Chen Zhigang , Liu Chengbao , Chen Feng 

TITLE=Construction of Molybdenum Disulfide/Biological Structure Carbon Composite Photocatalysts and Their Photocatalytic Hydrogen Production

JOURNAL=Frontiers in Materials

VOLUME=Volume 9 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2022.889499

DOI=10.3389/fmats.2022.889499

ISSN=2296-8016

ABSTRACT=The hydrothermal calcination method with using bamboo leaves as biological template, thiourea as sulfur source and molybdenum chloride as molybdenum source were used to synthesize the molybdenum disulfide/biological structure carbon (MoS2/C) photocatalytic composites with different concentrations of molybdenum chloride. The thermal decomposition behavior, surface morphology, phase structure, BET specific surface area, optical and photoluminescence properties and photocatalytic activity of MoS2/C photocatalytic composites with different concentrations of molybdenum chloride were studied. The results show that the optimal temperature for synthesizing MoS2/C photocatalytic composites is 700 ℃. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observation shows that the hydrothermal calcination method can be used to load MoS2 onto the biological carbon and form a structurally stable composite system. Analysis of optical and photoluminescence properties shows that the MoS2/C composites prepared by hydrothermal calcination method with the concentration of molybdenum chloride of 0.20 mol/L exhibits a high charge transfer and separation efficiency. Photocatalytic experiments show that the MoS2/C composites prepared by hydrothermal calcination method with the concentration of molybdenum chloride of 0.20 mol/L have high photocatalytic activity and cyclic stability. This excellent synthesis strategy can be used to synthesize other photocatalytic hydrogen production materials.