In situ growing of CoO nanoparticles on g-C3N4 composites with highly improved photocatalytic activity for hydrogen evolution. Issue 7 (10th July 2019)

• Record Type: Journal Article
• Authors: Liu, Xuecheng; Zhang, Qian; Liang, Liwei; Chen, Lintao; Wang, Yuyou; Tan, Xiaoqing; Wen, Li; Huang, Hongyu
• Is Part Of: Royal Society open science. Volume 6:Issue 7(2019)
• Publication Date: 2019-07-10
• Subjects: CoO nanoparticle -- photocatalytic hydrogen production -- g-C3N4; Science -- Periodicals; 500
• DOI: 10.1098/rsos.190433
• Languages: English
• ISSNs: 2054-5703

Abstract

Abstract : CoO/g-C3 N4 hybrid catalyst is facilely prepared for application to photocatalytic H2 evolution from water splitting by the vacuum rotation–evaporation and in situ thermal method. The physical and chemical properties of CoO/g-C3 N4 are determined by a series of characterization methods. The g-C3 N4 with 0.6 wt% Co loading exhibits superior photocatalytic hydrogen evolution activity with an H2 evolution amount of 23.25 mmol g −1 after 5 h. The obtained 0.6 wt% CoO/g-C3 N4 can split water to generate 0.39 mmol g −1 H2 without sacrificial agent and noble metal, while the pure g-C3 N4 is inactive under the same reaction conditions. The remarkable enhancement of photocatalytic H2 evolution activity of CoO/g-C3 N4 composites is mainly ascribed to the effective separation of electron–hole pairs and charge transfer. The work creates new opportunities for the design of low-cost g-C3 N4 -based photocatalysts with high photocatalytic H2 evolution activity from overall water splitting.