<strong>Evolution of microstructure and optical properties of TiO2/Au nanocomposite</strong>
Online Publishing @ NISCAIR
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Authentication Code |
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Title Statement |
<strong>Evolution of microstructure and optical properties of TiO2/Au nanocomposite</strong> |
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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 |
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Uncontrolled Index Term |
Phase transformation; Ball milling; Titanium dioxide; Nanocomposite; SPR |
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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. |
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Publication, Distribution, Etc. |
Indian Journal of Pure & Applied Physics (IJPAP) 2019-02-27 09:40:58 |
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Electronic Location and Access |
application/pdf http://op.niscair.res.in/index.php/IJPAP/article/view/20750 |
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Data Source Entry |
Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 57, ##issue.no## 2 (2019): Indian Journal of Pure & Applied Physics |
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Language Note |
en |
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Terms Governing Use and Reproduction Note |
Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India © 2015. The Council of Scientific & Industrial Research, New Delhi. |
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