Back to Search
Start Over
UV-blue spectral downshifting role of Ag-doped TiO2 nanoparticles and Ag compound to study its anti-bacterial properties on the E. Coli bacteria.
- Source :
- Applied Physics A: Materials Science & Processing; Nov2022, Vol. 128 Issue 11, p1-10, 10p, 2 Black and White Photographs, 2 Diagrams, 1 Chart, 6 Graphs
- Publication Year :
- 2022
-
Abstract
- Titanium dioxide nanoparticles (TiO<subscript>2</subscript> NPs) are prepared by using the sol–gel technique at calcination temperatures of 300, 400 and 500 °C. TiO<subscript>2</subscript> NPs prepared at 400 °C are doped with various molar percentages of Ag because of their suitable crystalline and optical properties. Results of UV–Vis adsorption and X-ray diffraction show that the TiO2 NPs' crystalline structure consists of a mixture of anatase and rutile crystalline phases and calcination temperature play a significant effect on TiO<subscript>2</subscript> NPs structural properties. After the Ag doping of TiO<subscript>2</subscript> NPs, peaks corresponding to TiO and Ag compounds and a pure anatase phase appear in the X-Ray spectrum. UV–Vis adsorption results illustrate the down-shifting of TiO<subscript>2</subscript> NPs doped with Ag, enhancing the photo-catalytic efficiency of Ag-TiO<subscript>2</subscript> NPs. XPS results display significant boarding of Ti 2p peaks related to Ag-TiO<subscript>2</subscript> NPs which may be explained by doping of TiO<subscript>2</subscript> NPs by Ag. The antibacterial property of Ag-TiO<subscript>2</subscript> NPs under various radiation conditions illustrates the significant role of Ag-doped in TiO<subscript>2</subscript> NPs to enhance absorption spectra of sunlight and improvement of photo-catalyst activity of Ag-TiO<subscript>2</subscript> NPs to kill Ecoli-bacteria. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09478396
- Volume :
- 128
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Applied Physics A: Materials Science & Processing
- Publication Type :
- Academic Journal
- Accession number :
- 160255798
- Full Text :
- https://doi.org/10.1007/s00339-022-06115-6