Facile synthesis of CeO2/g-C3N4 nanocomposites with significantly improved visible-light photocatalytic activity for hydrogen evolution. (21st June 2019)

• Record Type: Journal Article
• Authors: Liu, Xuecheng; He, Linxin; Chen, Ximin; Du, Liqiong; Gu, Xingxing; Wang, Song; Fu, Ming; Dong, Fan; Huang, Hongyu
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 31(2019)
• Page Start: 16154
• Page End: 16163
• Publication Date: 2019-06-21
• Subjects: CeO2 nanoparticle -- Photocatalytic H2 production -- g-C3N4 -- Visible light irradiation; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.05.042
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Ceria dioxide supported on graphitic carbon nitride (CeO2 /g-C3 N4 ) composites were facilely synthesized to be application for photocatalytic hydrogen (H2 ) generation in this present work. The physical and chemical properties of CeO2 /g-C3 N4 nanocomposites were determined via a series of characterizations. The CeO2 /g-C3 N4 composites prepared by facile thermal annealing and rotation-evaporation method exhibit excellent photocatalytic H2 evolution with visible-light illumination. The best hydrogen generation rate of CeO2 /g-C3 N4 composite with 1.5 wt% Pt is 0.83 mmol h −1 g −1, which is almost same as that of composite with 3 wt% Pt prepared by simple physical mixing method. The significantly developed photocatalytic activity of CeO2 /g-C3 N4 composite is majorly ascribed to the stronger interfacial effects with the more visible-light absorbance and faster electron transfer. This work reveals that construction of the CeO2 /g-C3 N4 composite with high disperse and close knit by the facile thermal annealing and rotation-evaporation method could be an effective method to achieve excellent photocatalytic hydrogen evolution performance. Highlights: CeO2 /g-C3 N4 had been facilely synthesized for photocatalytic H2 evolution. The photocatalytic hydrogen evolution rate of Pt–CeO2 /g-C3 N4 is 0.83 mmol h −1 g −1 . CeO2 /g-C3 N4 with the close-knit interface facilitates fast electrons transfer.