文献类型：期刊文献

英文题名：Dual-Mechanism Study of Metal-Free g-C3N4 Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions

作者：Yang, Zixu[1];Sun, Yang[1];Wang, Weizhi[1];Yuan, Xiaohan[1];Tian, Pengfei[2];Xu, Jing[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

年份：2025

卷号：30

期号：2

外文期刊名：MOLECULES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001405914900001)】；

基金：This project was supported by the National Natural Science Foundation of China (22178110), the Basic Research Program of Science and Technology Commission of Shanghai Municipality (22JC1400600), and the Shanghai Rising-Star Program (23QA1402400).

语种：英文

外文关键词：metal-free; light-independent; nonradical degradation; advanced oxidation processes; g-C3N4

摘要：Metal-free materials have been proved to be promising replacements of traditional metal-based catalysts for advanced oxidation reactions. Carbon nitride was found to be able to activate H2O2 and generate hydroxyl radicals (center dot OH). Nevertheless, the performance of carbon nitride is highly dependent on an external light source. In this work, we report a light-independent, metal-free catalyst based on g-C3N4 prepared using a facile calcination method. It is revealed that two reaction pathways, a radical (center dot OH) one and a nonradical (H2O2) one, coexist in organics oxidation on g-C3N4. The dominant reaction pathway is dependent on the condensation temperature of UCN. In addition, this g-C3N4 exhibited excellent stability after being recycled and reused for five cycles. The findings in this work can be used for the design of efficient and robust metal-free catalysts with both superior catalytic performance and high stability for various heterogeneous catalytic processes.