Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/117570
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Synergistic enhancement in antibacterial activity of core/shell/shell SiO₂/ZnO/Ag₃PO₄ nanoparticles
Other Titles: Synergistic enhancement in antibacterial activity of core/shell/shell SiO(2)/ZnO/Ag(3)PO(4) nanoparticles
Author: Zheng, P.
Zhang, B.
Jin, B.
Guan, W.
Bai, B.
Dai, S.
Citation: ChemNanoMat, 2018; 4(9):972-981
Publisher: Wiley
Issue Date: 2018
ISSN: 2199-692X
2199-692X
Statement of
Responsibility: 
Pei Zheng, Bingyang Zhang, Bo Jin, Weisheng Guan, Bo Bai and Sheng Dai
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.
Keywords: Zinc oxide; silver orthophosphate; synergistic effects; antibacterial nanocomposites; reactive oxygen species
Rights: © 2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim.
RMID: 0030097231
DOI: 10.1002/cnma.201800195
Grant ID: http://purl.org/au-research/grants/arc/DP160104632
Appears in Collections:Chemical Engineering publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.