{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T12:43:26Z","timestamp":1791981806575,"version":"4.4.0"},"reference-count":49,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2022,10,11]],"date-time":"2022-10-11T00:00:00Z","timestamp":1665446400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Open Fund of Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion &amp; Utilization Technology","award":["GF2022ZC005"],"award-info":[{"award-number":["GF2022ZC005"]}]},{"name":"the Open Fund of Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion &amp; Utilization Technology","award":["No. 52070049"],"award-info":[{"award-number":["No. 52070049"]}]},{"name":"the National Natural Science Foundation of China","award":["GF2022ZC005"],"award-info":[{"award-number":["GF2022ZC005"]}]},{"name":"the National Natural Science Foundation of China","award":["No. 52070049"],"award-info":[{"award-number":["No. 52070049"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Compared with certain transition metals (e.g., iron, cobalt, and manganese), noble metals are less frequently applied in peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs). Palladium (Pd), as one of noble metals, has been reported to possess the possibility of both radical mechanisms and electron transfer mechanisms in a heterogeneous Pd\/PMS system, however, data are still sparse on the homogeneous Pd\/PMS system. Therefore, this work aims to explore the homogeneous reactivity of PMS by Pd(II) ions from the aspects of reaction parameters, radical or non-radical oxidation mechanisms, and the relationship between pollutants\u2019 degradation rate and their molecular descriptors based on both experimental data and density functional theory (DFT) calculation results. As a result, the reaction mechanism of Pd(II)\/PMS followed a radical-driven oxidation process, where sulfate radicals (SO4\u2022\u2212), rather than hydroxyl radicals (HO\u2022), were the primary reactive oxidant species. BOx and EHOMO played significant roles in pollutant degradation during the Pd(II)\/PMS system. It turned out that the bond\u2019s stability and electron donation ability of the target compound was responsible for its degradation performance. This finding provides an insight into PMS activation by a noble metal, which has significant implications for scientific research and technical development.<\/jats:p>","DOI":"10.3390\/ijerph192013036","type":"journal-article","created":{"date-parts":[[2022,10,11]],"date-time":"2022-10-11T22:18:13Z","timestamp":1665526693000},"page":"13036","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Peroxymonosulfate Activation by Palladium(II) for Pollutants Degradation: A Study on Reaction Mechanism and Molecular Structural Characteristics"],"prefix":"10.3390","volume":"19","author":[{"given":"Bowen","family":"Yang","sequence":"first","affiliation":[{"name":"Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Buliding Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China"},{"name":"School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiang","family":"Ma","sequence":"additional","affiliation":[{"name":"Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Buliding Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China"},{"name":"School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiming","family":"Hao","sequence":"additional","affiliation":[{"name":"State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaojie","family":"Sun","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,11]]},"reference":[{"key":"ref_1","first-page":"111","article-title":"Review on wastewater treatment technologies","volume":"11","author":"Seow","year":"2016","journal-title":"Int. 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