Constructing novel graphitic carbon nitride-based nanocomposites - From the perspective of material dimensions and interfacial characteristics.

Two-dimensional (2D) graphitic carbon nitride (g-C 3 N 4), a fascinating metal-free conjugated polymer, has garnered immense interest in the fields of solar power generation and environmental remediation. The construction of g–C 3 N 4 –based nanocomposites with materials of various dimensions can further improve their photocatalytic activities by surface area enlargement, bandgap tuning, heterojunction formation, etc. In this paper, we comprehensively reviewed the design, synthesis, and functionalities of g–C 3 N 4 –based nanocomposites based on their applications in hydrogen evolution, CO 2 reduction, and pollutants removal. We provided detailed analyses on the integration of 2D g-C 3 N 4 with zero-, one-, two-, and three-dimensional materials with a focus on their interfacial characteristics and functional improvement. This review aims to stimulate fresh ideas on the interfacial engineering of g–C 3 N 4 –based nanocomposites to broaden their future applications. [Display omitted] • Two-dimensional g–C 3 N 4 –based nanocomposites in environmental applications are comprehensively reviewed. • The interfacial characteristics of 2D g-C 3 N 4 and materials with various dimensions are dissected and analyzed. • The mechanisms of photocatalytic performance enhancement of g–C 3 N 4 –based nanocomposites are summarized. • Challenges and prospects of 2D g–C 3 N 4 –based nanocomposites are discussed. [ABSTRACT FROM AUTHOR]