期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 928, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2022.167138
关键词
ZnO@PDA; Ag-Ag2O; Singlet oxygen; LED irradiation; Photocatalysis; Bacteria eradication
资金
- Natural Science foundation of Hebei Province [C2020407047, C2019407065]
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province
A core-shell ZnO@PDA/Ag-Ag2O nanocomposite with high photocatalytic efficiency was synthesized via a solvothermal method. The nanocomposite exhibited a high amount of singlet oxygen generation upon visible light irradiation and showed remarkable photocatalytic efficiency and antibacterial capability. It is expected to be a promising photocatalyst in the fields of sewage treatment, antibacterial agents, and nanomedicines.
Herein, a core-shell ZnO@PDA/Ag-Ag2O nanocomposite with high photocatalytic efficiency was synthesized via a solvothermal method. Due to polydopamine (PDA) coating and Ag-Ag2O doping, ZnO@PDA/Ag-Ag2O nanocomposite yielded a high amount of singlet oxygen (1O2) upon visible light irradiation, compared with unmodified ZnO and ZnO@PDA nanosheets. Under LED irradiation, ZnO@PDA/Ag-Ag2O nanocomposite with a p-n heterojunction exhibited remarkable photocatalytic efficiency for removing rhodamine B and elim-inating Escherichia coli and Staphylococcus aureus. Furthermore, ZnO@PDA/Ag-Ag2O nanocomposite de-monstrated high stability and photocatalytic activity after five consecutive cycles. It also effectively eliminated established biofilms and inhibited the generation of new biofilms. Wound-healing infected by S. aureus in vivo indicated that ZnO@PDA/Ag-Ag2O nanocomposite with LED irradiation inhibited microbial infection of wound and promoted wound healing. Therefore, 1O2-mediated ZnO@PDA/Ag-Ag2O nano -composite is expected to be a promising photocatalyst in the fields of sewage treatment, antibacterial agents, and nanomedicines.(c) 2022 Elsevier B.V. All rights reserved.
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