Constructing porous intramolecular donor–acceptor integrated carbon nitride doped with m-aminophenol for boosting photocatalytic degradation and hydrogen evolution activity

Abstract

Graphite carbon nitride (CN) has been recognized as promising photocatalyst for energy production and environmental remediation, while the high carrier recombination rate, low active site exposure and inadequate visible-light utilization...

Tailoring a sulfur doped carbon nitride skeleton to enhance the photocatalytic hydrogen evolution activity

“…The single CN has a limited PHE rate of 264 mmol h À1 g À1 , while all x-DZCN photocatalysts possess a higher PHE rate. Among them, the highest PHE rate over 20-DZCN achieved was 1930 mmol h À1 g À1 (exceeding that reported in the literature), 10,21,[34][35][36][37][38] which is 7.1 times that over the pristine CN and significantly higher than that for commercial P25 TiO 2 and ZnO nanopowder at the same conditions (Fig. 3a and b).…”

“…Our group fabricated a series of CN and achieved the effective regulation of the electronic structure, light absorption, and active site of CN materials by doping small molecules with different structures ( e.g. , pyrazine-2,3-dicarboxylic acid, 20 m -aminophenol, 21 and m -aminophenylboronic acid 22 ). Recently, through thorough grinding, followed by one-step thermally-induced polymerization of 2,5-thiophenedicarboxylic acid and urea, our team customized an ultra-thin CN nanosheet with doped S atoms and more edge –NH 2 exposed, which broadened the light absorption edge to 670 nm and achieved the removal rate of total organic carbon for tetracycline from 4.8% to 77.5%.…”