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

Nitin A. Jadhav, Chang Woo Kim, Umapada Pal, Jinheung Kim, Young Soo Kang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

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.

Original languageEnglish
Pages (from-to)5638-5643
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number7
DOIs
StatePublished - Jul 2012

Keywords

  • Crystallization
  • Mesoporous Materials
  • Titania

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