| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.1116 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Porosity characteristics of mesoporous TiO2 nanocrystals prepared with neutral surfactants of different chain lengths |
| 초록 |
We prepared mesoporous TiO2 nanocrystals with neutral surfactants of different chain lengths dodecylamine (C12) and hexadecylamine (C16). Porosity characteristics of mesoporous TiO2 nanocrystals were investigated through a nitrogen adsorption-desorption technique, X-ray diffraction, and Fourier transform infrared spectroscopy. Thermal treatments led the changes in porosity of mesoporous TiO2 nanocrystals, the growth of crystal sizes and even phase transformation. The higher calcination temperature, the larger pore diameters and crystal sizes. The rutile phase of mesoporous TiO2 appeared as calcined at 873 K. Porosity characteristics exhibited differently due to the effect of surfactant chain length. N2 adsorption-desorption isotherms indicated that mesoporous TiO2 nanocrystals using dodecylamine contained a relatively more textural mesoporosity compared to that using hexadecylamine. This result also explained well that the average pore diameter of mesoporous TiO2 using shorter alkyl chain length was larger than the other case. |
| 저자 |
신은우, Thuy-Duong Nguyen-Phan, 김의정
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| 소속 |
울산대 |
| 키워드 |
Mesoporous TiO2; Neutral surfactants; Mesoporosity; Thermal treatment |
| E-Mail |
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| 원문파일 |
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