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Mechanism insight into the facet-dependent photoaging of polystyrene microplastics on hematite in freshwater
Water Research X2023
15 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 45
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Lanfang Han,
Jiehong He,
Jiehong He,
Jiehong He,
Jiehong He,
Lanfang Han,
Lanfang Han,
Jiehong He,
Jiehong He,
Jiehong He,
Chao Xu,
W. F. Mader,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Jiehong He,
Zhifeng Yang,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Chuanxin Ma,
Chuanxin Ma,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Chuanxin Ma,
Jiehong He,
Elvis Genbo Xu,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Chuanxin Ma,
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
W. F. Mader,
Lanfang Han,
Lanfang Han,
Lanfang Han,
W. F. Mader,
W. F. Mader,
Elvis Genbo Xu,
Elvis Genbo Xu,
Jiehong He,
Lanfang Han,
Baoshan Xing
Lanfang Han,
W. F. Mader,
Elvis Genbo Xu,
Elvis Genbo Xu,
Chuanxin Ma,
Chao Xu,
Chuanxin Ma,
Elvis Genbo Xu,
Elvis Genbo Xu,
Baoshan Xing
Jiehong He,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Elvis Genbo Xu,
Chuanxin Ma,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Chuanxin Ma,
Elvis Genbo Xu,
Chuanxin Ma,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Lanfang Han,
Lanfang Han,
Baoshan Xing
Lanfang Han,
Baoshan Xing
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Chuanxin Ma,
Baoshan Xing
Zhifeng Yang,
Chuanxin Ma,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Lanfang Han,
Lanfang Han,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Chao Xu,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Zhifeng Yang,
Chuanxin Ma,
Elvis Genbo Xu,
Chuanxin Ma,
Zhifeng Yang,
Zhifeng Yang,
Elvis Genbo Xu,
Elvis Genbo Xu,
Zhifeng Yang,
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Chuanxin Ma,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Jiehong He,
Elvis Genbo Xu,
Elvis Genbo Xu,
Chuanxin Ma,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Zhifeng Yang,
Baoshan Xing
Chuanxin Ma,
Baoshan Xing
W. F. Mader,
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Elvis Genbo Xu,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Baoshan Xing
Baoshan Xing
Chuanxin Ma,
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Elvis Genbo Xu,
Zhifeng Yang,
Chuanxin Ma,
Baoshan Xing
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Chuanxin Ma,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Lanfang Han,
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Summary
Polystyrene microplastics photoaged faster on the {012} crystal facet of hematite than on other facets due to a narrower bandgap of 1.93 eV and lower activation energy for hydroxyl radical formation, demonstrating that mineral crystallography influences microplastic weathering rates in freshwater.
Hematite, as an extensive natural mineral with multiple crystal facets, profoundly affects the migration and transformation of pollutants in the natural environment. However, little is known about the photochemical behavior of microplastics on different facets of hematite in the aquatic environment. In this work, the photoaging of polystyrene microplastics (PS-MPs) on different crystal planes ({001}, {100}, and {012} facets) and related mechanisms were studied. Two-dimensional correlation spectroscopy analysis illustrated that the reaction pathways of PS-MPs photoaging on hematite tended to preferential chemical oxidization. The stronger performance of PS-MPs photoaging, expressed by particle size reduction and surface oxidation, was observed on the {012} crystal facet. Under irradiation, {012} facet-dominated hematite with a narrower bandgap (1.93 eV) reinforced the photogenerated charge carrier separation, and the lower activation energy barrier (1.41 eV calculated from density functional theory) led to effective •OH formation from water oxidation. These findings elucidate the underlying photoaging mechanism of MPs on hematite with different mineralogical phases.