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Nanomaterials 2015, 5(2), 386-397; doi:10.3390/nano5020386

Synthesis of Silver-Strontium Titanate Hybrid Nanoparticles by Sol-Gel-Hydrothermal Method

Graduate School Department of Interdisciplinary Research, University of Yamanashi, 4-4-37 Takeda, Kofu 400-8510, Japan
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Academic Editor: Thomas Nann
Received: 4 February 2015 / Revised: 10 March 2015 / Accepted: 18 March 2015 / Published: 24 March 2015
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Abstract

Silver (Ag) nanoparticle-loaded strontium titanate (SrTiO3) nanoparticles were attempted to be synthesized by a sol-gel-hydrothermal method. We prepared the titanium oxide precursor gels incorporated with Ag+ and Sr2+ ions with various molar ratios, and they were successfully converted into the Ag-SrTiO3 hybrid nanoparticles by the hydrothermal treatment at 230 °C in strontium hydroxide aqueous solutions. The morphology of the SrTiO3 nanoparticles is dendritic in the presence and absence of Ag+ ions. The precursor gels, which act as the high reactive precursor, give rise to high nucleation and growth rates under the hydrothermal conditions, and the resultant diffusion-limited aggregation phenomena facilitate the dendritic growth of SrTiO3. From the field-emission transmission electron microscope observation of these Ag-SrTiO3 hybrid nanoparticles, the Ag nanoparticles with a size of a few tens of nanometers are distributed without severe agglomeration, owing to the competitive formation reactions of Ag and SrTiO3. View Full-Text
Keywords: silver nanoparticles; strontium titanate; sol-gel-hydrothermal method; hybrid particles silver nanoparticles; strontium titanate; sol-gel-hydrothermal method; hybrid particles
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MDPI and ACS Style

Ueno, S.; Nakashima, K.; Sakamoto, Y.; Wada, S. Synthesis of Silver-Strontium Titanate Hybrid Nanoparticles by Sol-Gel-Hydrothermal Method. Nanomaterials 2015, 5, 386-397.

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