Fabrication of bimodal (meso/macro) porous alumina materials using yeast cells as templates

Atsuya Towata; Manickam Sivakumar; Kyuichi Yasui; Toru Tuziuti; Teruyuki Kozuka; Kazutoku Ohta; Yasuo Iida

doi:10.1380/ejssnt.2005.405

Conference -ISSS-4-

Fabrication of bimodal (meso/macro) porous alumina materials using yeast cells as templates

Atsuya Towata, Manickam Sivakumar, Kyuichi Yasui, Toru Tuziuti, Teruyuki Kozuka, Kazutoku Ohta, Yasuo Iida

Author information

Atsuya Towata
Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), Japan
Manickam Sivakumar
Department of Pharm. Engg. & Tech., School of Engg. & Tech., Bharathidasan University, India
Kyuichi Yasui
Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), Japan
Toru Tuziuti
Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), Japan
Teruyuki Kozuka
Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), Japan
Kazutoku Ohta
Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), Japan
Yasuo Iida
Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), Japan

Keywords: Adsorption isotherms, Bimodal, Yeast cells, Sintering, Surface chemical reaction, Aluminum oxide, Porous solids, Template

JOURNAL FREE ACCESS

2005 Volume 3 Pages 405-411

DOI https://doi.org/10.1380/ejssnt.2005.405

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Abstract

Bimodal (meso/macro) porous alumina materials were synthesized using yeast cells as bio-templates. Aluminium isopropoxide (AIP) modified with triethanolamine (TEA) was first hydrolyzed by water containing the dispersed yeast cells. This resulted in the formation of slurry consisting of hydrolyzed sol and yeast cells. After centrifuging the solution, the obtained cake which is packed with hydrated sol and yeast cells was subjected to heat treatment. The sample after heat treatment contained finely dispersed bimodal (meso/ macro) pores ranging in size from 1.5 to 2.0 μm and several nm. Under the present experimental conditions, the thickness of alumina wall was also controlled by changing the ratio of yeast cells to AIP. It was also observed that with an increase in the thickness of the wall, the size of the pores decreased. [DOI: 10.1380/ejssnt.2005.405]

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