Enhanced degradation of phenolic pollutants using nitrogen-doped CuAlO2 as a heterogeneous Fenton catalyst: The critical role of nitrogen doping

Enhanced degradation of phenolic pollutants using nitrogen-doped CuAlO2 as a heterogeneous Fenton catalyst: The critical role of nitrogen doping | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 23 July 2025 V1 Latest version Share on Enhanced degradation of phenolic pollutants using nitrogen-doped CuAlO2 as a heterogeneous Fenton catalyst: The critical role of nitrogen doping Authors : Sun Liang , Wang Lipeng , Pan Daojie , Dou Yuexi , and Liang Qiaochu [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.175326137.74415026/v1 129 views 79 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract For the classical Fenton process, the reduction of Fe 3+ to Fe 2+ by oxidizing H 2 O 2 is the rate-limiting step, and H 2 O 2 tends to decompose into O 2 ∙ - and O 2 rather than OH, leading to excessive consumption of H 2 O 2 . In this study, a nitrogen-doped Cu-based bimetallic oxide (CuAlO 2 -N) was developed to overcome these limitations, achieving enhanced degradation of phenolic pollutants with significantly improved H 2 O 2 utilization efficiency (3.44 times higher than that of CuO). Nitrogen doping formed a Cu–N–Al structure, which effectively modulated the electron distribution around Cu atoms, generating electron-rich Cu sites that inhibited the oxidation of H 2 O 2 . Furthermore, in addition to the classical Fenton reactions, bisphenol A (BPA) degradation involved a ligand-to-metal electron transfer (LMET) pathway. This pathway not only promoted the generation of OH radicals but also facilitated the rapid regeneration of low-valent Cu species. Density Functional Theory (DFT) calculations indicated that nitrogen doping enhanced the interaction between the catalyst and BPA, thereby promoting the LMET pathway. Overall, this study demonstrates that rational design and utilization of catalyst-pollutant interactions can facilitate the development of heterogeneous Fenton catalysts with improved H 2 O 2 utilization efficiency. Supplementary Material File (manuscript20250723.docx) Download 42.62 MB Information & Authors Information Version history V1 Version 1 23 July 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords cualo2 h2o2 utilization efficiency heterogeneous fenton ligand-to-metal electron transfer nitrogen-doping phenolic pollutants Authors Affiliations Sun Liang Qingdao University of Science and Technology College of Environment and Safety Engineering View all articles by this author Wang Lipeng Qingdao University of Science and Technology College of Environment and Safety Engineering View all articles by this author Pan Daojie Qingdao University of Science and Technology College of Environment and Safety Engineering View all articles by this author Dou Yuexi Qingdao University of Science and Technology College of Environment and Safety Engineering View all articles by this author Liang Qiaochu [email protected] Qingdao University of Science and Technology College of Environment and Safety Engineering View all articles by this author Metrics & Citations Metrics Article Usage 129 views 79 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Sun Liang, Wang Lipeng, Pan Daojie, et al. Enhanced degradation of phenolic pollutants using nitrogen-doped CuAlO2 as a heterogeneous Fenton catalyst: The critical role of nitrogen doping. Authorea . 23 July 2025. DOI: https://doi.org/10.22541/au.175326137.74415026/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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