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=10

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=<p>The semiconductors, such as TiO<sub>2</sub>, CdS, ZnO, BiVO<sub>4</sub>, graphene, produce good applications in photocatalytic water splitting for hydrogen production, and great progress have been made in the synthesis and modification of the materials. As a two-dimensional layered structure material, graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>), with the unique properties of high thermostability and chemical inertness, excellent semiconductive ability, affords good potential in photocatalytic hydrogen evolution. However, the related low efficiency of g-C<sub>3</sub>N<sub>4</sub> with fast recombination rate of photogenerated charge carriers, limited visible-light absorption, and low surface area of prepared bulk g-C<sub>3</sub>N<sub>4</sub>, has called out the challenge issues to synthesize and modify novel g-C<sub>3</sub>N<sub>4</sub>-block photocatalyst. In this review, we have summarized several strategies to improve the photocatalytic performance of pristine g-C<sub>3</sub>N<sub>4</sub> such as pH, morphology control, doping with metal or non-metal elements, metal deposition, constructing a heterojunction or homojunction, dye-sensitization, and so forth. The performances for photocatalytic hydrogen evolution and possible development of g-C<sub>3</sub>N<sub>4</sub> materials are shared with the researchers interested in the relevant fields hereinto.</p>