Role of silver doping on the defects related photoluminescence and antibacterial behaviour of zinc oxide nanoparticles

Title
Role of silver doping on the defects related photoluminescence and antibacterial behaviour of zinc oxide nanoparticles
Authors
채근화Jai PrakashJitendra Pal SinghC. SwartVinod KumarO.M. NtwaeaborwaH.C. SwartViresh Dutta
Keywords
ZnO:Ag nanoparticles; Defects; Photoluminescence; XPS; XANES; Antibacterial behaviour
Issue Date
2017-11
Publisher
Colloids and surfaces. B, Biointerfaces
Citation
VOL 159-199
Abstract
The Ag doped ZnO (ZnO:Ag) NPs with a hexagonal wurtzite structure were synthesized by a solution combustion method. X-ray absorption near edge structure (XANES) and X-ray photoelectron spectroscopy (XPS) were used to study the defects, local electronic and atomic structures before and after Ag doping. XPS and XANES studies confirmed the deficiency of concentration of defects in ZnO after Ag doping. The photoluminescence study showed the deep level emission in the orange-red region in addition to the band to band emission. It was also found that the defect related emission of ZnO was decreased with an increasing in Ag concentration. The antibacterial behaviour of ZnO and ZnO:Ag NPs was studied against the gram positive and gram negative bacteria. The role of Ag doping and defects in the ZnO NPs were discussed for the observed antibacterial and photoluminescence behaviour.
URI
http://pubs.kist.re.kr/handle/201004/66542
ISSN
0927-7765
Appears in Collections:
KIST Publication > Article
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