An approach to prepare hierarchically nanostructured silica materials possessing both micro- and mesoporosity has been investigated. Tetramethoxysilane was hydrolysed in the long-range ordered lyotropic liquid crystal (LLC) phase formed from the non-ionic block copolymer Pluronic P123 in the intermediate-range ordered protic ionic liquid (PIL), ethylammonium nitrate (EAN). The structures of the silica materials prepared with various amounts of inorganic precursor were characterized by using small angle X-ray scattering, N-2 gas sorption, and TEM. The final silica materials contained a disordered population of micropores coexisting with an ordered population of mesopores with an average pore size of 1.0 nm and 4.5 nm respectively. The bimodal nanoscale pore structure reflects the nanostructure of the EAN PIL and that of the P123-EAN LLC phase, respectively. The specific surface area of the micro/mesoporous silica ranged from 485 to 949 m(2)g(-1), depending on the inorganic precursor concentration.
机构:
Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, MalaysiaUniv Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, Malaysia
Chew, Thiam-Leng
;
Ahmad, Abdul L.
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Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, MalaysiaUniv Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, Malaysia
Ahmad, Abdul L.
;
Bhatia, Subhash
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Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, MalaysiaUniv Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, Malaysia
机构:
Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, MalaysiaUniv Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, Malaysia
Chew, Thiam-Leng
;
Ahmad, Abdul L.
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h-index: 0
机构:
Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, MalaysiaUniv Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, Malaysia
Ahmad, Abdul L.
;
Bhatia, Subhash
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h-index: 0
机构:
Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, MalaysiaUniv Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, Malaysia