Boosting photocatalytic degradation of tetracycline under visible light over hierarchical carbon nitride microrods with carbon vacancies

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

“…As the dominant active substances in the process of TC photodegradation, ˙O 2 − is derived from the e − reduction of O 2 , and 1 O 2 originates from h + oxidation of ˙O 2 − . 71,72…”

“…To achieve a deep understanding of the photocatalytic degradation pathways, the intermediates produced in the TC photodegradation via CN 30 under illumination for 30 min were identified by HPLC-MS. 60,71 Based on the monitoring results of MS (Fig. S5†) and reported research, the possible degradation routes are provided in Fig.…”

“…Initial TC ( m / z = 445) was firstly oxidized by free radicals and lost methyl, thus producing intermediate P1 ( m / z = 431). 71 The hydroxyl groups on P1 were dehydrated to form alkenyl groups to form P2 ( m / z = 413) with a more stable conjugated structure. 73,74 P2 was further oxidized and underwent ring-opening to form P3, which lost methyl acyl to form P4.…”

“…P6 and P4 were fragmented into small molecules P7 ( m / z = 122) and P8 ( m / z = 90), and these intermediates were finally photodegraded into H 2 O, CO 2 and other small molecules. 71,73,74…”

Synthesis of Cu3P/SnO2 composites for degradation of tetracycline hydrochloride in wastewater

“…[14][15][16][17] Many semiconductor photocatalysts have been developed for decades. For example, Shen et al prepared hierarchical carbon nitride photocatalyst, 18 Song et al constructed KCl/NH 4 Cl/g-C 3 N 4 composite photocatalyst, 19 Mao et al prepared Bi 2 WO 6 / CuS composite photocatalyst, 20 these catalysts have been used to degrade TC-HCl, and have achieved good degradation effects.…”