| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 |
20권 2호, p.2219 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Chemical Doping of TiO2 with Nitrogen and Fluorine and Its Support Effect on Catalytic Activity of CO Oxidation |
| 초록 |
We investigated the effect of strong metal–support interaction (SMSI) and the role of electronic excitations at the interfaces by studying the effect of the support on catalytic activity of CO oxidation using Pt on doped & undoped TiO2. As a support, TiO2 was synthesized via sol-gel process; chemically doped with N & F non-metal anions. The Pt/N-, Pt/F-,and Pt/undoped TiO2 catalysts were fabricated by depositing Pt on spin coated TiO2 films by arc plasma deposition technique. The CO Oxidation turnover rates of Pt/N- & Pt/F-doped TiO2 were a factor of ~2.5 higher to Pt/undoped TiO2 was observed. We attribute the enhancement of activity with O2 vacancies formed during the doping process and the facile charge transfer at the metal-oxide interfaces. Alternatively, lower oxidation states of Pt/doped TiO2 due to enhanced charge transfer can result in higher catalytic activity. |
| 저자 |
Kalyan C. Goddeti1, 김선미2, 이영근3, 김상훈1, 박정영2
|
| 소속 |
1Center for Nanomaterials and Chemical Reactions, 2Institute for Basic Science / Graduate School of EEWS, 3KAIST |
| 키워드 |
Doped TiO2; Sol-gel technique; Strong metal-support interaction; CO oxidation; Turnover frequency
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
