Enhanced photocatalytic H_2 production over dual-cocatalyst-modified g-C_3N_4 heterojunctions

作     者：Zong Li Yongning Ma Xiaoyun Hu Enzhou Liu Jun Fan 李纵;马永宁;胡晓云;刘恩周;樊君

作者机构：School of Chemical Engineering Northwest University Xi’an 710069 Shaanxi China School of Physics Northwest University Xi’an 710069 Shaanxi China Institute of Modern Physics Northwest University Xi’an 710069 Shaanxi China 

基　　金：supported by the National Natural Science Foundation of China(21676213,21476183,51372201) the China Postdoctoral Science Foundation(2016M600809) the Natural Science Basic Research Plan in Shaanxi Province of China(2017JM2026) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2019年第40卷第3期

页      码：434-445页

摘      要：Ag nanoparticles (NPs) were deposited on the surface of g-C3N4 (CN) by an in situ calcination method. NiS was successfully loaded onto the composites by a hydrothermal method. The results showed that the 10 wt%-NiS/1.0 wt%-Ag/CN composite exhibits excellent photocatalytic H2 generation performance under solar-light irradiation. An H2 production rate of 9.728 mmol·g^-1·h^-1 was achieved, which is 10.82-, 3.45-, and 2.77-times higher than those of pure g-C3N4, 10 wt%-NiS/CN, and 1.0 wt%-Ag/CN composites, respectively. This enhanced photocatalytic H2 generation can be ascribed to the co-decoration of Ag and NiS on the surface of g-C3N4, which efficiently improves light harvesting capacity, photogenerated charge carrier separation, and photocatalytic H2 production kinetics. Thus, this study demonstrates an effective strategy for constructing excellent g-C3N4-related composite photocatalysts for H2 production by using different co-catalysts.

主 题 词：Photocatalysis Photocatalytic H2 generation g-C3N4 Ag NiS 

学科分类：081702[081702] 081705[081705] 08[工学] 0817[工学-轻工类] 

核心收录：

D　O　I：10.1016/S1872-2067(18)63189-4

馆 藏 号：203455189...