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Concentration and temperature effect on controlling pore size and surface area of mesoporous titania by using template of F-68 and F-127 Co-polymer in the sol-gel process

Title
Concentration and temperature effect on controlling pore size and surface area of mesoporous titania by using template of F-68 and F-127 Co-polymer in the sol-gel process
Authors
Jadhav N.A.Kim C.W.Pal U.Kim J.Kang Y.S.
Ewha Authors
김진흥
SCOPUS Author ID
김진흥scopus
Issue Date
2012
Journal Title
Journal of Nanoscience and Nanotechnology
ISSN
1533-4880JCR Link
Citation
vol. 12, no. 7, pp. 5638 - 5643
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Mesoporous titania with crystalline pore walls and controlled pore sizes was fabricated through triblock copolymer (pluronic series) templated sol-gel process by changing the copolymer concentration and by adjusting their calcination temperature. Compared with mesoprous silicate, the synthetic condition of mesoporous titania would be sensitive to calcination temperature. Their pore arrangement and pore size depend strongly on the concentration of copolymer used as a template. Their arrangement of pores and speci?c surface area increases with the increase of calcination temperature up to critical limit, 320 °C. Beyond the critical temperature, the orderness of pores and speci?c surface area decreases due to the collapse of the pore walls. The speci?c surface area, pore size and pore orderness can be controlled by optimizing calcination temperature as well as polymer concentration. We demonstrate the mechanism of pore formation and their collapse in the sol-gel synthesis of mesoporous titania. © 2012 American Scientific Publishers.
DOI
10.1166/jnn.2012.6314
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자연과학대학 > 화학·나노과학전공 > Journal papers
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