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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 89 - 95 (7page)
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초록· 키워드
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Spherical mesoporous silica particles, of which main pore diameter was 3.8 ㎚, were successfully prepared by spray pyrolysis from aqueous silicic acid. The effect of precursor concentration, reaction temperature, and the addition of urea and PEG on the particle diameter and pore properties such as pore diameter, total pore volume, and specific surface area were investigated by using FE-SEM, particle size analyzer, and nitrogen absorption-desorption analysis.
With an increase of the precursor concentration from 0.2 M to 0.7 M, the average particle diameter, total pore volume, and specific surface area of the porous silica particles increased from 0.56 to 0.96 ㎛, 0.434 to 0.486 ㎤/g,467.8 to 610.4 ㎡/g, respectively. Within the temperature range (600 ℃ ~ 800 ℃), there was no significant difference in the pore diameter, total pore volume, and specific surface area. In addition, the addition of urea as an expansion aid led to slight increases in particle diameter, pore diameter, and specific surface area. However, when the polyethylene glycol (PEG) as an organic template was used, the total pore volume of porous particles increased dramatically.
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참고문헌 (13)
참고문헌 신청
Beck, J. S. / 1992 / A new family of mesoporous molecular sieves prepared with liquid crystal templates / Journal of the American Chemical Society 114 (27) : 10834 ~ 10843
Chang, H. / 2008 / Pore size-controlled synthesis and characterization of nanostructured silica particles / Ultramicroscopy 108 : 1260 ~ 1265
Chinarro, E. / 2007 / Synthesis of ceria-based electrolyte nanometric powders by urea-combustion technique / Journal of the European Ceramic Society 27 : 3619 ~ 3623
Iskandar, F. / 2001 / In situ production of spherical silica particles containing self-organized mesopores / Nano Letters 1 (5) : 231 ~ 234
Iskandar, F. / 2002 / Controllability of pore size and porosity on self-organized porous silica particles / Nano Letters 2 (4) : 389 ~ 392
Chang, H. / 2008 / Pore size-controlled synthesis and characterization of nanostructured silica particles / Ultramicroscopy 108 : 1260 ~ 1265
Chinarro, E. / 2007 / Synthesis of ceria-based electrolyte nanometric powders by urea-combustion technique / Journal of the European Ceramic Society 27 : 3619 ~ 3623
Iskandar, F. / 2001 / In situ production of spherical silica particles containing self-organized mesopores / Nano Letters 1 (5) : 231 ~ 234
Iskandar, F. / 2002 / Controllability of pore size and porosity on self-organized porous silica particles / Nano Letters 2 (4) : 389 ~ 392
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