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- 고온에서 안정적인 TiO2/Pt/SiO2 하이브리드 나노촉매의 제작 및 촉매 특성
- , 정찬호, 김선미, 윤중열, 박정영
- Synthesis and Catalytic Characteristics of Thermally Stable TiO2/Pt/SiO2 Hybrid Nanocatalysts
- A. Satyanarayana Reddy, Chan-Ho Jung, Sun-Mi Kim, Jung-Yeul Yun, Jeong-Young Park
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Journal of Korean Powder Metallurgy Institute 2011;18(6):532-537
DOI: https://doi.org/10.4150/KPMI.2011.18.6.532
2한국과학기술원 EEWS 대학원
3한국과학기술원 EEWS 대학원
4한국기계연구원 부설 재료연구소
5한국과학기술원 EEWS 대학원
1Graduate School of EEWS (WCU) and NanoCentury KI, KAIST (Korea Advanced Institute of Science and Technology)
2Graduate School of EEWS (WCU) and NanoCentury KI, KAIST (Korea Advanced Institute of Science and Technology)
3Graduate School of EEWS (WCU) and NanoCentury KI, KAIST (Korea Advanced Institute of Science and Technology)
4Korea Institute of Materials Science
5Graduate School of EEWS (WCU) and NanoCentury KI, KAIST (Korea Advanced Institute of Science and Technology)
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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°C 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.
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