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<strong>Evolution of microstructure and optical properties of TiO2/Au nanocomposite</strong>

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Title Statement <strong>Evolution of microstructure and optical properties of TiO2/Au nanocomposite</strong>
 
Added Entry - Uncontrolled Name Tripathy, B B
Behera, M
Rath, H
Mallick, Pravanjan ; North Orissa University
Mishra, N C ; Department of Physics, Utkal University, Bhubaneswar 751 004, India
 
Uncontrolled Index Term Phase transformation; Ball milling; Titanium dioxide; Nanocomposite; SPR
 
Summary, etc. TiO<sub>2</sub>/Au nanocomposite has been synthesized by mixing Au with milled TiO<sub>2 </sub>nanopowder through wet chemical route. The effect of Au on the microstructural and optical properties of TiO<sub>2 </sub>nanopowder has been studied by XRD, FESEM, UV Visible, PL and FTIR techniques. Our study indicates that Au causes the decrease of crystallite size of TiO<sub>2</sub> by accumulating on the circumference of these nanoparticles. TiO<sub>2</sub>/Au nanocomposite exhibits strong spectral response in the visible range due to the surface plasmon effect. Band gap of TiO<sub>2 </sub>nanopowder reduces from 3.4 eV to 3.1 eV while making composite with Au. The PL spectra showed that emission peak intensity of TiO<sub>2 </sub>nanopowder decreases in the presence of Au. The reductions in band gap and electron-hole recombination in TiO<sub>2</sub>/Au nanocomposite suggest that TiO<sub>2</sub>/Au could be a good candidate for photocatalysis.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2019-02-27 09:40:58
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/20750
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 57, ##issue.no## 2 (2019): Indian Journal of Pure & Applied Physics
 
Language Note en
 
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