Preparation of Sulfur-Doped g-C3N4 and Its Photocatalytic Performance for Hydrogen Evolution
LI Xingjie
SUN Wei
MING Qiuyan
LIU Yaocheng
LIAO Guodong
WANG Haitao
JIANG Jizhou
Abstract：Developing hydrogen energy has attracted wide attention under the background of'dual carbon'national strategy.g-C3N4 is considered to be a promising hydrogen evolution photocatalyst because of its advantages of simple preparation,suitable band gap and high stability.However,slow charge transfer and fast carrier recombination rate lead to poor hydrogen evolution performance of pure g-C3N4.In this study,a simple and efficient sulfur-doped g-C3N4 synthesis strategy is developed by creatively using the high-tem-perature thermal polymerization between sulfur powder and urea solution.As a result,two-dimensional sulfur-doped g-C3N4 nanosheet(S-g-C3N4)is synthesized.Subsequently,the effects of sulfur doping on the photoelectrochemical properties and photocatalytic hydrogen evolution performance of g-C3N4 are sys-tematically studied.The results show that sulfur doping can not only effectively enhance the visible light absorption capacity,but also significantly improve the photogenerated carrier separation and transfer effi-ciency of g-C3N4.Therefore,the photocatalytic hydrogen production rate of S-g-C3N4 is nearly 10 times higher than that of pure g-C3N4.
Keywords：g-C3N4sulfur powdersulfur-dopingphotocatalytic hydrogen evolution
Publication Date：2024-02-28
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：6( 70-75 )