肺表面活性物质
介孔材料
材料科学
化学工程
纳米技术
化学
有机化学
工程类
催化作用
作者
Takeshi Endo,Suguru Okada,Kanjiro Torigoe,Naokiyo Koshikawa,Recka G. Shresta,Kenichi Sakai,Setsuko Koura,Masahiko Abe,Hideki Sakai
标识
DOI:10.1016/j.colsurfa.2014.10.004
摘要
We have reported the synthesis of mesoporous titania with crystalline walls using hexadecyltrimethylammonium bromide (CTAB), a typical cationic surfactant, as a template and titanium sulfoxide as a reactant in aqueous solution (Shibata et al., 2005 [1]). In this study, the removal method of CTAB from the mesopores without calcination or collapsing the ordered porous structure is described. First, CTAB molecules in the pore were replaced by acetic acid molecules under moderate reaction conditions. FT-IR spectra confirmed the removal of CTAB and adsorption of acetic acid. Removal of the adsorbed acetic acid was then performed by addition of carbonate ions that desorbed the acetate ions on the surface of the mesoporous titania. Mesoporous titania after removal of CTAB by the present method was found to have a more uniform pore structure compared with that after removal of CTAB by calcination treatment.
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