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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
MAT.P-474 |
| Subject |
Size Control of Disordered Mesoporous Spherical Silica Particles by Variation of Synthetic Parameters |
| Authors |
Jiyeon Lee, SeungWoo LEE, Chanho PAK*
Graduate Program of Energy Technology, Gwangju Institute of Science and Technology, Korea
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| Abstract |
Mesoporous silica particles have a lot of applications such as catalyst support materials, gas adsorption, gas sensing, chromatography and drug delivery. In these applications, the morphology such as primary particle size and shape and pore structure such as size distribution and connectivity is very important. In this study, the effect of parameter controls such as base concentration and mixing speed on the particle morphology of disordered mesoporous spherical silica particles (DMSS) is investigated. The DMSS samples prepared by the modified Stöber synthesis process using the n-hexadecylamine as a surfactant. The particle size of DMSS is decreased from 1m to ~ 350nm with increasing the ammonia concentration in the reaction mixture. The mean pore diameter of DMSS samples are in the range of 3.5nm and 4.5nm. In addition, DMSS sample having 350nm in size is applied as a new template material for the mesoporous carbon by nano-template method. Its replicated-carbon has similar size of DMSS’s particle and pore structure, while the surface area is increased up to 1200m2/g, which can be used the carbon support the supported catalyst for the fuel cell. |
| E-mail |
jylee1606@gist.ac.kr |
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121st General Meeting of the KCS