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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 1    September 2009

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Synthesis and characterization of metallic Pd embedded TiO2 nanoparticles by reverse micelle and sol-gel processing
Jeoung-Ho JIN1, Min-Cheol CHU2, Seong-Jai CHO2, Dong-Sik BAE1

1. School of Nano & Advanced Materials Science Engineering, Changwon National University,
Gyeongnam, 641-773, Korea;
2. Division of Industrial Metrology, Korea Research Institute of Standards and Science, 1 Doryong-Dong,
Yuseong-Gu, Daejeon, 305-340, Korea

Abstract:Metallic Pd clusters were embedded into TiO2 nanoparticles that were synthesized within reverse micelle via a solution reduction of Pd(NO3)2 by hydrazine hydrate. The size of the particles can be controlled by manipulating the relative rates of the hydrolysis and condensation reactions of titanium tetra-isopropoxide within the micro-emulsion. The spherical equivalent size for the Pd clusters formed in TiO2 matrix was estimated to be around (3±1) nm. The presence of Pd in the matrix was demonstrated by EDS spectroscopy. The effects of synthesis parameters, such as the concentration of Pd solution, the molar ratio of water to TIP, and the molar ratio of water to surfactant, were discussed.

 

Key words: catalyst; nanomaterial; powder technology; sol-gel preparation

ISSN 1672-7029
CN 43-1423/U

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