Synergistic Enhancement in Antibacterial Activity of Core/Shell/Shell SiO2/ZnO/Ag3PO4 Nanoparticles
Source abstract
Abstract
Abstract Novel core/shell/shell SiO2/ZnO/Ag3PO4 nanoparticles (SZA‐NPs) were prepared through a facile reflux method involving sequential deposition of ZnO and Ag3PO4 to SiO2 spheres. The obtained SZA‐NPs were systematically characterized and used as the dual‐functional antibacterial agents for disinfection. Under visible‐light irradiation, the SZA‐NPs exhibit enhanced antibacterial activity for of Escherichia coli DH5α (E. coli) compared to that of Ag3PO4 or SiO2/ZnO in liquid phase and on agar plates. Quantitative analysis of Ag+ release from SZA‐NPs confirms the minor contribution of released silver ions to the antibacterial efficiency. On the other hand, chemical scavengers and photoluminescence studies suggest that radical oxygen species (ROS) also make major contribution to E. coli cell death. The enhanced antibacterial activity of the SZA‐NPs under visible‐light irradiation can be attributed to the synergistic effect of released silver ions and ROS generated from the excellent band matching between Ag3PO4 and ZnO. This work paves a new way for future design of highly efficient visible‐light induced antibacterial agents.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Nanoplatforms for cancer theranostics · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Geography and Environment Baoji University of Arts and Sciences Baoji 721013 China
School of Chemical Engineering The University of Adelaide Adelaide SA 5005 Australia
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region Chang'an University Xi'an 710054 China
State Key Laboratory of Plateau Ecology and Agriculture Qinghai University Qinghai 810016 China
School of Chemical Engineering and Advanced Materials Newcastle University Newcastle upon Tyne NE1 7RU, UK
Funding
Australian Research Council · National Natural Science Foundation of China · China Scholarship Council
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