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Title: Synthesis of highly efficient antibacterial agent Ag doped ZnO nanorods: Structural, Raman and optical properties

Here, synthesis, structural, morphological, Raman, optical properties and antibacterial activity of undoped and Ag doped ZnO nanorods by chemical co-precipitation technique have been reported. Structural analysis has revealed that Ag doping cannot deteriorate the structure of ZnO and wurtzite phase is maintained. Lattice constants are found to be decreased with the Ag doping. Fourier transform infrared and Raman spectroscopy also confirm the X-ray diffraction results. Scanning electron microscopy results have demonstrated the formation of ZnO nanorods with average diameter and length of 96 nm and 700 nm, respectively. Raman spectroscopy results suggest that the Ag doping enhances the number of defects in ZnO crystal. It has been found from optical study that Ag doping results in positional shift of band edge absorption peak. This is attributed to the successful incorporation of Ag dopant into ZnO host matrix. The antibacterial activity of prepared nanorods has been determined by two different methods and compared to that of undoped ZnO nanorods. Ag doped ZnO nanorods exhibit excellent antibacterial activity as compared to that of undoped ZnO nanorods. This excellent antibacterial activity may be attributed to the presence of oxygen vacancies and Zn{sup 2+} interstitial defects. Our preliminary findings suggest that Ag doped ZnO nanorods canmore » be used externally to control the spreading of infections related with tested bacterial strains.« less
Authors:
;  [1] ;  [2] ;  [3]
  1. Laboratory of Nanoscience and Technology, Department of Physics, International Islamic University Islamabad (Pakistan)
  2. Institute of Biomedical and Genetic Engineering (IBGE), Islamabad (Pakistan)
  3. Nano Devices Labs, National Institute of Lasers and Optronics, Islamabad (Pakistan)
Publication Date:
OSTI Identifier:
22273574
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; COMPARATIVE EVALUATIONS; COPRECIPITATION; CRYSTALS; DOPED MATERIALS; FOURIER TRANSFORMATION; INTERSTITIALS; LATTICE PARAMETERS; NANOSTRUCTURES; OPTICAL PROPERTIES; OXYGEN; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; SILVER COMPOUNDS; STRAINS; VACANCIES; X-RAY DIFFRACTION; ZINC IONS; ZINC OXIDES