Perovskite manganese oxides with tunable metal–oxygen covalency for efficient bisphenol A degradation
文献情報
Yilan Jiang, Peifang Wang, Yiran Xiong, Tingyue Chen, Chi Zhang, Keyi Gao, Xiaoguang Duan, Dawei Wang
Direct oxidation of organic pollutants by manganese oxides is appealing for the removal of persistent organic pollutants (POPs) since it requires no chemical dosing. Rapid electron transfer and moderate adsorption are vital in manganese-induced oxidation. In this study, we used perovskite lanthanum manganate (LaMnO3) as a model to explore the relationship between bisphenol A (BPA) removal efficiency and metal–oxygen covalency, which is closely related to electron transfer and adsorption capacity, by introducing other metals or defects at the A-site. X-ray absorption spectra (XAS) and density functional theory (DFT) calculation showed that the charge migration rate and BPA adsorption capacity on manganese oxides increase with the increase of metal–oxygen covalency. The manganese oxides with medium metal–oxygen covalency have the strongest oxidation capability toward BPA. Our work provides new regulatory strategies for enhancing the oxidation ability of manganese oxides to directly decompose organic pollutants via interfacial electron transfer.
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Journal of Materials Chemistry A

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

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