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However, their potential role in degrading pollutants under hydrodynamic conditions after environmental aging is frequently overlooked. In this study, three common MPs including polyethylene (PE), polypropylene (PP), and polystyrene (PS) were investigated for their ability to enhance atrazine (ATZ) degradation after UV aging and under ultrasonic hydrodynamic treatment. Our findings demonstrate that environmental aging significantly boosts the piezoelectric catalytic activity of MPs, consequently accelerating pollutant degradation. UV\u2010aged polypropylene (PP\u20108) exhibited the highest performance, achieving a piezoelectric catalytic degradation rate constant (\n                    <jats:italic>k<\/jats:italic>\n                    \u2550 0.246 min\n                    <jats:sup>\u22121<\/jats:sup>\n                    ), which is 22.36\u2010fold higher than that of pristine PP (\n                    <jats:italic>k<\/jats:italic>\n                    \u2550 0.011 min\n                    <jats:sup>\u22121<\/jats:sup>\n                    ). Mechanistic studies revealed that polar carbonyl (C \u2550 O) functional groups formed during aging play a pivotal role for improving the piezoelectric properties of MPs. This enhancement promotes hydroxyl radicals (\u00b7OH) generation from water molecules, which drives pollutant degradation. Furthermore, this effect was found to be general as it was consistently observed in systems using MPs aged by different environmental processes (high temperature, mechanical wear, and Fenton oxidation) and exposed to various hydrodynamic conditions (oscillation and cavitation). This study provides new insights into the self\u2010purification mechanisms of organic pollutants in natural environments.\n                  <\/jats:p>","DOI":"10.1002\/anie.3065392","type":"journal-article","created":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T04:14:54Z","timestamp":1791519294000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Environmental Aging Enhances Hydrodynamic Driven Microplastics Piezoelectric Catalytic Decomposition of Organic Pollutants"],"prefix":"10.1002","author":[{"given":"Qintian","family":"Peng","sequence":"first","affiliation":[{"name":"Engineering Research Center of Eco\u2010environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University  Yichang China"},{"name":"College of Chemistry and Environmental Engineering Shiyan Key Laboratory of Biological Resources and Eco\u2010environmental Protection Hanjiang Normal University  Shiyan Hubei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Houle","family":"Zhou","sequence":"additional","affiliation":[{"name":"Engineering Research Center of Eco\u2010environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University  Yichang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiyang","family":"Qin","sequence":"additional","affiliation":[{"name":"Engineering Research Center of Eco\u2010environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University  Yichang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Di","family":"Huang","sequence":"additional","affiliation":[{"name":"Engineering Research Center of Eco\u2010environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University  Yichang China"},{"name":"College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University  Yichang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3492-1388","authenticated-orcid":false,"given":"Xin Ying","family":"Kong","sequence":"additional","affiliation":[{"name":"School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University  Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8932-5439","authenticated-orcid":false,"given":"Yingping","family":"Huang","sequence":"additional","affiliation":[{"name":"Engineering Research Center of Eco\u2010environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University  Yichang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruiping","family":"Li","sequence":"additional","affiliation":[{"name":"Engineering Research Center of Eco\u2010environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University  Yichang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6410-689X","authenticated-orcid":false,"given":"Liqun","family":"Ye","sequence":"additional","affiliation":[{"name":"Engineering Research Center of Eco\u2010environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University  Yichang China"},{"name":"College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University  Yichang 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