Graphitic Carbon Nitride: A Promising Polymer with Widespread Applications

Abstract

Graphitic carbon nitride (g‐C 3 N 4 ), as an amazing two‐dimensional polymer, displayed vast interdisciplinary consideration as a metal‐free, robust, and visible‐light‐active material with diverse applications, and it has introduced a novel research hotspot. This appealing polymer endows an excellent perspective in various sciences, thanks to its moderate energy gap, significant optical and electronic features, and supreme physicochemical and thermal durability. Moreover, g‐C 3 N 4 can be easily fabricated by attainable nitrogen and carbon sources in nitrogen‐rich environments. These features have led to the usage of this polymer in hydrogen production, contaminant degradation, carbon dioxide reduction, N 2 fixation, supercapacitors, lithium‐ion batteries, fuel cells, and sensing. This article gives a general review about the preparation routes of g‐C 3 N 4 polymer and the optical absorption characteristics and highlights their applications in different arena.

Preparation of Z‐scheme spherical BiOI/Fe2O3/BiOBr for water pollution treatment

“…[ 1–4 ] As a kind of antibiotic, tetracycline plays a great role in medical treatment and animal husbandry, but its long‐term residual in water will cause harm to the water resources and human health. [ 5–10 ] Therefore, it is urgent to find a suitable way to solve these problems. Semiconductor photocatalysts have attracted more and more attention on the treatment of environmental pollutants because of their advantages of green, nontoxic, and low cost.…”

High specific surface CeO2–NPs doped loose porous C3N4 for enhanced photocatalytic oxidation ability

“…Nevertheless, the bulk g-C 3 N 4 obtained by the conventional thermal polymerization of N-containing precursors tends to has fast charge recombination and low specific surface area, which seriously restricts its application [29,30]. Therefore, in order to overcome the shortcomings of bulk g-C 3 N 4 , researchers proposed many modification strategies, such as constructing heterojunction [31][32][33], metal doping or non-metal doping [34][35][36][37], constructing defect sites [38][39][40], increasing specific surface area [30,41], etc. Among them, the porous carbon nitride (PCN) obtained by top-down strategy has attracted further attention.…”