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This article is cited in 3 scientific papers (total in 3 papers)
Nanoparticles
Synthesis of TiO2 nanoparticles decorated with gold nanoclusters using pulsed laser ablation in liquid
S. O. Gurbatovab, N. Mintchevacd, S. Iwamorid, S. A. Kulinichbd, A. A. Kuchmizhakab a Institute for Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok
b Far Eastern Federal University, Vladivostok
c Department of Chemistry, University of Mining and Geology, Bulgaria
d Research Institute of Science and Technology, Tokai University, Japan
Abstract:
Amorphous spherical titanium dioxide (TiO2) nanoparticles, decorated gold nanoparticles, are shown to be formed under irradiation of commercial TiO2 nanopowders dispersed in aqueous solution of hydrogen tetrachloroaurate (HAuCl4) by second-harmonic nanosecond pulses of an Nd : YAG laser. It is found that these hybrid nanostructures are formed during laser-induced remelting of the initial nanoparticles, stimulated by gold nanoclusters (providing more efficient absorption of visible laser radiation by titanium dioxide) recovered on their surface. The morphology and chemical composition of the newly formed hybrid nanomaterials are investigated in detail by electron microscopy, Raman spectroscopy, and energy-dispersive analysis. It is shown that the average size and number of gold nanoparticles recovered on the TiO2 surface can be controlled by varying the concentration ratio of the initial nanomaterial and HAuCl4. A spectroscopic analysis of light scattering by single hybrid nanoparticles and the results of numerical calculation of the structure of electromagnetic fields near their surface indicate good prospects of these hybrid nanomaterials for various applications in modern optics, optoelectronics, and nanophotonics; for example, for designing chemo- and biosensor platforms and new-generation solar cells.
Keywords:
hybrid nanomaterials, laser ablation in liquid, titanium dioxide.
Received: 02.03.2020 Revised: 10.04.2020
Citation:
S. O. Gurbatov, N. Mintcheva, S. Iwamori, S. A. Kulinich, A. A. Kuchmizhak, “Synthesis of TiO2 nanoparticles decorated with gold nanoclusters using pulsed laser ablation in liquid”, Kvantovaya Elektronika, 50:9 (2020), 855–860 [Quantum Electron., 50:9 (2020), 855–860]
Linking options:
https://www.mathnet.ru/eng/qe17318 https://www.mathnet.ru/eng/qe/v50/i9/p855
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Abstract page: | 165 | Full-text PDF : | 35 | References: | 21 | First page: | 15 |
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