Processing, Characterization, and Bactericidal Activity of Undoped and Silver-Doped Vanadium Oxides
Abstract
Vanadium oxide (V) and silver-doped vanadium oxide (Ag-V) powders were prepared via sol-gel processing. Structural evolution and bactericidal activity was examined as a function of temperature ranging from 250, 350, 450 and 550°C. Powders were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and Raman spectroscopy. Results from all techniques showed vanadium pentoxide (V 2O5) is the predominant phase regardless of heat treatment temperature or the addition of silver (Ag). XRD analysis suggests Ag is present as AgCl in samples heat treated to 250, 350, and 450°C and as AgV 6O15 at 550°C. Bactericidal activity was evaluated against Escherichia coli using the agar disk diffusion method considering both Ag-V and undoped, V powders. While the addition of Ag significantly increased bactericidal properties, the specific Ag valency, or crystal structure and morphology formed at higher temperatures, had little effect on functionality. © 2012 Elsevier B.V. All rights reserved.
Recommended Citation
M. E. Tousley et al., "Processing, Characterization, and Bactericidal Activity of Undoped and Silver-Doped Vanadium Oxides," Materials Chemistry and Physics, vol. 137, no. 2, pp. 596 - 603, Elsevier, Dec 2012.
The definitive version is available at https://doi.org/10.1016/j.matchemphys.2012.10.008
Department(s)
Chemical and Biochemical Engineering
International Standard Serial Number (ISSN)
0254-0584
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 Elsevier, All rights reserved.
Publication Date
14 Dec 2012
