{"title":"三聚氰胺废水碱化管状C3N4与Fenton废水处理相结合的2e - ORR可持续制H2O2研究","authors":"Hongyu Song, Huijing Ma, Haifei Wang, Yichan Wen, Chengcheng Cai, Jiyi Sun, Xufang Qian* and Yixin Zhao*, ","doi":"10.1021/acssusresmgt.5c00228","DOIUrl":null,"url":null,"abstract":"<p >The utilization of waste resources stands as a sustainable approach for circular strategy. Herein, we report an alkalinized tubular carbon nitride (A-C<sub>3</sub>N<sub>4</sub>-T) catalyst derived from melamine waste, addressing waste utilization while exhibiting remarkable 2e<sup>–</sup> ORR activity. Density functional theory calculations reveal its tailored electronic structure optimizes *OOH intermediate adsorption, promoting the 2e<sup>–</sup> ORR pathway. The catalyst delivers a high H<sub>2</sub>O<sub>2</sub> productivity of 26.2 mol g<sup>–1</sup> h<sup>–1</sup> under 300 mA cm<sup>–2</sup> and maintains operational stability for over 220 h. The tandem of H<sub>2</sub>O<sub>2</sub> electrosynthesis and Fenton reactor was used for water treatment. This study elucidates the 2e<sup>–</sup> ORR mechanism of melamine-waste-derived C<sub>3</sub>N<sub>4</sub> and offers a sustainable strategy for H<sub>2</sub>O<sub>2</sub> electrosynthesis and its integration into advanced oxidation processes, providing a future vision of oxidant self-supporting decentralized electrosynthesis/waste water treatment integration system.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 8","pages":"1476–1485"},"PeriodicalIF":0.0000,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sustainable H2O2 Production via 2e– ORR on Alkalinized Tubular C3N4 from Melamine Waste Integrating with Fenton Wastewater Treatment\",\"authors\":\"Hongyu Song, Huijing Ma, Haifei Wang, Yichan Wen, Chengcheng Cai, Jiyi Sun, Xufang Qian* and Yixin Zhao*, \",\"doi\":\"10.1021/acssusresmgt.5c00228\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The utilization of waste resources stands as a sustainable approach for circular strategy. Herein, we report an alkalinized tubular carbon nitride (A-C<sub>3</sub>N<sub>4</sub>-T) catalyst derived from melamine waste, addressing waste utilization while exhibiting remarkable 2e<sup>–</sup> ORR activity. Density functional theory calculations reveal its tailored electronic structure optimizes *OOH intermediate adsorption, promoting the 2e<sup>–</sup> ORR pathway. The catalyst delivers a high H<sub>2</sub>O<sub>2</sub> productivity of 26.2 mol g<sup>–1</sup> h<sup>–1</sup> under 300 mA cm<sup>–2</sup> and maintains operational stability for over 220 h. The tandem of H<sub>2</sub>O<sub>2</sub> electrosynthesis and Fenton reactor was used for water treatment. This study elucidates the 2e<sup>–</sup> ORR mechanism of melamine-waste-derived C<sub>3</sub>N<sub>4</sub> and offers a sustainable strategy for H<sub>2</sub>O<sub>2</sub> electrosynthesis and its integration into advanced oxidation processes, providing a future vision of oxidant self-supporting decentralized electrosynthesis/waste water treatment integration system.</p>\",\"PeriodicalId\":100015,\"journal\":{\"name\":\"ACS Sustainable Resource Management\",\"volume\":\"2 8\",\"pages\":\"1476–1485\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-07-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Sustainable Resource Management\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acssusresmgt.5c00228\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Sustainable Resource Management","FirstCategoryId":"1085","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acssusresmgt.5c00228","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
废物资源的利用是循环战略的可持续途径。在此，我们报道了一种碱化管状氮化碳（A-C3N4-T）催化剂，该催化剂来源于三聚氰胺废物，在处理废物利用的同时表现出显著的2e - ORR活性。密度泛函理论计算表明，其定制的电子结构优化了*OOH中间吸附，促进了2e - ORR途径。在300 mA cm-2条件下，催化剂的H2O2产率高达26.2 mol g-1 h - 1，并保持220 h以上的运行稳定性。本研究阐明了三聚氰胺废物衍生的C3N4的2e - ORR机制，并为H2O2电合成及其与高级氧化工艺的集成提供了可持续的策略，为氧化剂自支撑分散电合成/废水处理集成系统的未来发展提供了前景。
Sustainable H2O2 Production via 2e– ORR on Alkalinized Tubular C3N4 from Melamine Waste Integrating with Fenton Wastewater Treatment
The utilization of waste resources stands as a sustainable approach for circular strategy. Herein, we report an alkalinized tubular carbon nitride (A-C3N4-T) catalyst derived from melamine waste, addressing waste utilization while exhibiting remarkable 2e– ORR activity. Density functional theory calculations reveal its tailored electronic structure optimizes *OOH intermediate adsorption, promoting the 2e– ORR pathway. The catalyst delivers a high H2O2 productivity of 26.2 mol g–1 h–1 under 300 mA cm–2 and maintains operational stability for over 220 h. The tandem of H2O2 electrosynthesis and Fenton reactor was used for water treatment. This study elucidates the 2e– ORR mechanism of melamine-waste-derived C3N4 and offers a sustainable strategy for H2O2 electrosynthesis and its integration into advanced oxidation processes, providing a future vision of oxidant self-supporting decentralized electrosynthesis/waste water treatment integration system.
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