AUTHOR=Gao Rui-Han , Ge Qingmei , Jiang Nan , Cong Hang , Liu Mao , Zhang Yun-Qian 

TITLE=Graphitic carbon nitride (g-C3N4)-based photocatalytic materials for hydrogen evolution

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1048504

DOI=10.3389/fchem.2022.1048504

ISSN=2296-2646

ABSTRACT=The semiconductors, including TiO2, graphene, etc., produce good applications in photocatalytic water splitting for hydrogen production, which have obtained great progress in synthesis and modification. As a two-dimensional layered structure material, graphitic carbon nitride (g-C3N4), with unique properties of facile synthesis, appealing electronic band structure, and high physicochemical stability, affords good potential application in photocatalytic hydrogen evolution. However, the related low efficiency of g-C3N4 for the fast recombination rate of photogenerated charge carriers, limited visible-light absorption, and low surface area of prepared bulk g-C3N4, has called out the challenge issues to synthesize and modify novel g-C3N4-block photocatalyst. In this review, we have summarized several strategies to improve the photocatalytic performance of pristine g-C3N4 including pH, morphology control, doping with metal or non-metal elements, metal deposition, constructing a heterojunction, dye-sensitization, and so forth. As well as, the performances for photocatalytic hydrogen evolution and possible development of g-C3N4 materials are shared with the researchers interested in the relevant fields hereinto.