Visible Light-Driven High-Entropy Narrow Band Gap (Y0.2La0.2Tb0.2Dy0.2Ho0.2)MnO3 Photocatalyst Structural Characterization, Selective Removal, DFT Calculation, and Photocatalytic Mechanism

Visible Light-Driven High-Entropy Narrow Band Gap (Y0.2La0.2Tb0.2Dy0.2Ho0.2)MnO3 Photocatalyst : Structural Characterization, Selective Removal, DFT Calculation, and Photocatalytic Mechanism

A (Y0.2La0.2Tb0.2Dy0.2Ho0.2)MnO3 (A5MnO3) high-entropy oxide was prepared by a simple polyacrylamide gel method and the addition of Y, La, Tb, Dy, and Ho elements in an equal molar ratio to the position of the Y element of YMnO3. The high-entropy A5MnO3 catalyst exhibits a high selectivity for degra...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 33 vom: 26. Aug., Seite 22601-22622
1. Verfasser: Mo, PeiLin (VerfasserIn)
Weitere Verfasser: Wang, Shifa, Zhang, Yuanyuan, Yu, Xianlun, Gao, Huajing, Chen, Chaoli, Yang, Hua, Fang, Leiming, Chen, Xiping, Zhang, Huijun, Zhou, Xianju, Li, Dengfeng, Syed, Asad
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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Zusammenfassung:A (Y0.2La0.2Tb0.2Dy0.2Ho0.2)MnO3 (A5MnO3) high-entropy oxide was prepared by a simple polyacrylamide gel method and the addition of Y, La, Tb, Dy, and Ho elements in an equal molar ratio to the position of the Y element of YMnO3. The high-entropy A5MnO3 catalyst exhibits a high selectivity for degrading -C═O, -NH2, and -OH bonds, as demonstrated by the results. When the catalyst content and initial contaminant concentration were 1 g/L and 50 mg/L, respectively, the degradation percentages of tetracycline hydrochloride (TC) at pH 6.4 and doxycycline hydrochloride (DOX) at pH 3.8 by the A5MnO3 catalyst reached 77.33% and 90.86%, respectively. Using TC as a representative, the degradation pathway of TC degraded by an A5MnO3 catalyst and the toxicity of the intermediate were studied by using LC-MS and toxicity assessment software. First-principles calculation determined that the A5MnO3 catalyst is a narrow band gap semiconductor. The results confirmed that hole, hydroxyl, and superoxide radicals are the main active species of the A5MnO3 catalysts for the degradation of pollutants. A novel strategy and technical guidance are presented in this study to synthesize novel narrow band gap high-entropy oxides that can degrade pollutants in wastewater
Beschreibung:Date Revised 27.08.2025
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1520-5827
DOI:10.1021/acs.langmuir.5c03358