Engineering monomer structure of carbon nitride for the effective and mild photooxidation reaction

In Situ Hydrothermal Construction of Direct Solid-State Nano-Z-Scheme BiVO4/Pyridine-Doped g-C3N4 Photocatalyst with Efficient Visible-Light-Induced Photocatalytic Degradation of Phenol and Dyes

“…Latterly, various types of monomer precursors with cyano and/or amino groups have been developed for integrating organic molecules with different functional groups into the CN frameworks. 9−19 However, after modification by the organic molecular doping method, the valence band (VB) position of g-C 3 N 4 was sharply shifted toward the negative potential position, which was detrimental to its applications in the organic pollutant degradation by dramatically decreasing the oxidizability of the organic-molecule-doped g-C 3 N 4 . 19,29 Therefore, it is highly desired to develop a novel strategy to maintain or enhance the reducibility and oxidizability of the organic-molecule-doped g-C 3 N 4 .…”

Carbonyl‐Grafted g‐C3N4 Porous Nanosheets for Efficient Photocatalytic Hydrogen Evolution

“…Since Wang et al reported graphitic carbon nitride( g-C 3 N 4 ), am etal-free polymer semiconductor that is able to produce hydrogen or oxygen by splitting water under visible-light irradiation, [17] g-C 3 N 4 has attracted more and more attention for its application in supercapacitors, [18] lithiumion batteries, [19] photodegradation of pollutants, [20,21] and especially in photocatalytic hydrogen production. [26] Up to now,s everal approaches have been explored to improve the visible-light utilization of g-C 3 N 4 to achieve high photocatalytic activity,i ncluding doping with metal and/or nonmetal ions, [27][28][29][30][31][32] construction of heterojunctions with other semiconductors, [20,21,25,[33][34][35] copolymerization with organic molecules, [35][36][37][38][39] modification with carbon materials, [40][41][42] co-catalyst deposition, [43,44] thin-film fabrication, [45] and photosensitization with dyes. However, pristine g-C 3 N 4 exhibits limited photocatalytic activity owing to its small specific surface area, poor visible-light utilization, and fast recombination of photogenerated electrons and holes.…”

“…Up to now, several approaches have been explored to improve the visible‐light utilization of g‐C 3 N 4 to achieve high photocatalytic activity, including doping with metal and/or nonmetal ions, construction of heterojunctions with other semiconductors, copolymerization with organic molecules, modification with carbon materials, co‐catalyst deposition, thin‐film fabrication, and photosensitization with dyes . Among these methods, nonmetal doping has been demonstrated to be an effective way to incorporate external impurities into g‐C 3 N 4 to modulate its electronic structure to achieve high photocatalytic performance.…”

Heteroatom‐Doped Carbonaceous Photocatalysts for Solar Fuel Production and Environmental Remediation

“…Similar to S,N-codoped photocatalysts, the N,P-dual-doped carbonaceousp hotocatalysts, also called P-doped g-C 3 N 4 ,h ave also gained great interest. [284][285][286][287][288][289][304][305][306][307][308] From Ta ble7,t he copolymerization of N-containing precursor like melamine, dicyandiamide or guanidiniumh ydrochloridew ith the Pp recursor like 1-butyl-3-methylimidazolium hexa fluorophosphate (BMIMPF 6 ), hydroxyethylide dediphosphonic acid (HEDP) or 2aminoethyl phosphonic acid (AEP) is ag eneral method for pre-aring P-doped g-C 3 N 4 . [284][285][286] In addition, the combination methods including the coploymerization followed by exfoliation, [287] milling followed by annealing, [288] preorganization followed by thermal condensation, [289] were employed to fabricating P-doped g-C 3 N 4 nano/micro structuresw ith diverse morphologies and prysicochemical properties.…”

“…Similar to S, N ‐codoped photocatalysts, the N,P‐dual‐doped carbonaceous photocatalysts, also called P‐doped g‐C 3 N 4 , have also gained great interest . From Table , the copolymerization of N ‐containing precursor like melamine, dicyandiamide or guanidinium hydrochloride with the P precursor like 1‐butyl‐3‐methylimidazolium hexa fluorophosphate (BMIMPF 6 ), hydroxyethylide dediphosphonic acid (HEDP) or 2‐aminoethyl phosphonic acid (AEP) is a general method for prearing P‐doped g‐C 3 N 4 .…”