고온에서 안정적인 TiO_2/Pt/SiO_2 하이브리드 나노촉매의 제작 및 촉매 특성
Synthesis and Catalytic Characteristics of Thermally Stable TiO_2/Pt/SiO_2 Hybrid Nanocatalysts
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Thermally stable TiO_2/Pt/SiO_2 core-shell nanocatalyst has been synthesized by chemical processes. Citrated capped Pt nanoparticles were deposited on amine functionalized silica produced by Stober process. Ultrathin layer of titania was coated on Pt/SiO_2 for preventing sintering of the metal nanoparticles at high temperatures. Thermal stability of the metal-oxide hybrid catalyst was demonstrated heating the sample up to 600℃ in air and by investigating the morphology and integrity of the structure by transmission electron spectroscopy. The surface analysis of the constituent elements was performed by X-ray photoemission spectroscopy. The catalytic activity of the hybrid catalysts was investigated by CO oxidation reaction with oxygen as a model reaction.
Abstract
Thermally stable TiO_2/Pt/SiO_2 core-shell nanocatalyst has been synthesized by chemical processes. Citrated capped Pt nanoparticles were deposited on amine functionalized silica produced by Stober process. Ultrathin layer of titania was coated on Pt/SiO_2 for preventing sintering of the metal nanoparticles at high temperatures. Thermal stability of the metal-oxide hybrid catalyst was demonstrated heating the sample up to 600℃ in air and by investigating the morphology and integrity of the structure by transmission electron spectroscopy. The surface analysis of the constituent elements was performed by X-ray photoemission spectroscopy. The catalytic activity of the hybrid catalysts was investigated by CO oxidation reaction with oxygen as a model reaction.
참고문헌 (15)
- R. Narayanan, , Top. Catal, 47, pp.15~ (2005)
- G. A. Somorjai, , Top. Catal, 49, pp.126~ (2008)
- G. A. Somorjai, , Angewandte Chemie Int. Ed, 47, pp.9212~ (2008)
- J. Y. Park, , Catalysis Letters, 129, pp.1~ (2009)
- S. H. Joo, , Nature. Mater, 8, pp.126~ (2009)
- I. Lee, , Nano Res, 4, pp.115~ (2011)
- K. Gude, , J. Phys. Chem. C, 114, pp.6356~ (2010)
- A. S. Reddy, , Chem. Comm, 47, pp.8412~ (2011)
- Q. Zhang, , Adv. Funct. Mater, 20, pp.2201~ (2010)
- S. H. Lim, , Langmuir, 24, pp.6226~ (2008)
- J. Y. Park, , Langmuir, 27, pp.2509~ (2011)
- X. Su, , J. Am. Chem. Soc, 119, pp.3994~ (1997)
- S. J. Tauster, , J. Am. Chem. Soc, 100, pp.170~ (1978)
- K. Hayek, , Topics in Catalysis, 13, pp.55~ (2000)
- J. Y. Park, , Topics in Catalysis, 46, pp.217~ (2007)