Synergistic effect of phosphorus doping and MoS_(2) co-catalysts on g-C_(3)N_(4) photocatalysts for enhanced solar water splitting

作     者：Xunfu Zhou Pai Wang Meng Li Minfu Wu Bei Jin Jin Luo Meifeng Chen Xiaoqin Zhou Yanning Zhang Xiaosong Zhou Xunfu Zhou;Pai Wang;Meng Li;Minfu Wu;Bei Jin;Jin Luo;Meifeng Chen;Xiaoqin Zhou;Yanning Zhang;Xiaosong Zhou

作者机构：School of Chemistry and Chemical EngineeringKey Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education InstitutesLingnan Normal UniversityZhanjiangGuangdong 524048China Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu 611731China Electrochemical NanoEnergy GroupSchool of Chemical Engineering and Light Industry at Guangdong University of TechnologyGuangzhou 510006China Department of Food Science Foshan PolytechnicFoshan 528137China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2023年第158卷第27期

页      面：171-179页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by Guangdong Basic and Ap-plied Basic Research Foundation(Nos.2021A1515110003 and 2020A1515110332) financial support from the National Natural Science Foundation of China(Nos.51974158 and 21902070) Scientific Research Projects of Key Disciplines in Guangdong Province(No.2019-GDXK-0023) Projects of“Leiyang Scholar”post plan of Lingnan Normal University(2021) Open Project of Key Laboratory of Chean Energy Material Chemistry in Guangdong General University(No.CEMC2022011). 

主　　题：Synergistic effect Noble-metal-free photocatalyst P-doping MoS_(2)co-catalyst Water splitting g-C_(3)N_(4) 

摘      要：Carbon nitride(g-C_(3)N_(4))is a promising metal-free and visible-light-responsive photocatalyst.However,its photocatalytic efficiency still suffers from high recombination rates of photoinduced charge carriers,slow kinetics of surface redox reactions,and relatively poor light absorption.Herein,a non-noble metal photocatalyst of MoS_(2) nanodots anchored on P-doped g-C_(3)N_(4) via in situ photodeposition was constructed.With the synergetic effect of the P-doping and MoS_(2) co-catalyst,the as-prepared P-doped g-C_(3)N_(4)/MoS_(2) catalyst has achieved efficient photocatalytic overall water splitting with a hydrogen evolution rate of 121.7μmol h−1 g−1.Experimental results and Density functional theory(DFT)simulations indicate that the enhanced photo-absorption capacity originates from the reduced band gaps by P doping.Meanwhile,the MoS_(2) reduces the overpotential of the water oxidation process and improves hydrogen adsorption capability in the hydrogen evolution reaction.This work can pave a new avenue to design and develop noble-metal-free water-splitting photocatalysts for future large-scale applications.