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Bimetallic Au/Ag coated on In2O3 for the effective removal of emerging organic contaminants under natural sunlight irradiation.
Jin, Jiahui; Dai, Chunhui; Zeng, Chao; Liu, Xin; Jia, Yushuai.
Afiliación
  • Jin J; School of Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China; College of Chemistry and Materials, Jiangxi Normal University, Nanchang, 330022, China.
  • Dai C; Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, China.
  • Zeng C; School of Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China. Electronic address: czeng@jxnu.edu.cn.
  • Liu X; School of Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China.
  • Jia Y; College of Chemistry and Materials, Jiangxi Normal University, Nanchang, 330022, China. Electronic address: ysjia@jxnu.edu.cn.
J Environ Manage ; 370: 122573, 2024 Sep 19.
Article en En | MEDLINE | ID: mdl-39303599
ABSTRACT
Antibiotics-polluted wastewater, likely causing the spread of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs), can be effectively remediated by photocatalytic degradation driven by endless solar energy. Herein, bimetallic Au/Ag is deposited on In2O3 surface via a one-step sintering process followed by a controllable chemical reduction approach. Under natural sunlight irradiation, the optimal Au/Ag/In2O3 (UGI-1.0) photocatalyst possesses a considerable norfloxacin (NOR) degradation rate constant of 0.013 min-1, which is 3.25, 1.63, and 1.86 times higher than that of In2O3, Ag/In2O3, and Au/In2O3 respectively. The effect of many water characteristics (e.g., humic acid, water bodies, pH values, and coexisting anions) on the photodegradation performance of NOR over UGI-1.0 is investigated. Moreover, other persistent organic pollutants (ofloxacin, phenol, 2,4-dichlorophenol, and rhodamine B) can also be degraded over UGI-1.0, suggesting its universal oxidation capacity. To settle the challenge of powder photocatalyst recovery, the UGI-1.0 photocatalyst is coated on a frosted glass sheet, which exhibits outstanding activity and stability for degrading NOR. The bimetallic Au/Ag deposited on In2O3 promote its photo-absorption, and enhance its photoinduced charge separation and transfer efficiency by serving as electron accepter, leading to the boosted activity of Au/Ag/In2O3 catalysts. Particularly, the cultivation of staphylococcus aureus (S. aureus) and cabbage seeds reveals the efficient toxicity reduction of NOR by photocatalytic degradation and the nontoxic characteristic of UGI-1.0 catalyst. This work unveils the feasibility of UGI-1.0 to remediate real wastewater with the assistance of solar energy.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Environ Manage Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Environ Manage Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido