共 35 条
Low-temperature synthesis of highly hydrophilic Ti-containing mesoporous silica thin films on polymer substrates by photocatalytic removal of structure-directing agents
被引:23
作者:

Horiuchi, Yu
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h-index: 0
机构:
Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan

Ura, Haruhisa
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h-index: 0
机构:
Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan

Kamegawa, Takashi
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h-index: 0
机构:
Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan

Mori, Kohsuke
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h-index: 0
机构:
Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan

Yamashita, Hiromi
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h-index: 0
机构:
Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan
机构:
[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan
关键词:
SINGLE-SITE PHOTOCATALYSTS;
SURFACE;
FABRICATION;
EPOXIDATION;
ZEOLITE;
ADSORPTION;
ALIGNMENT;
PROPERTY;
CATALYST;
ALKENES;
D O I:
10.1039/c0jm01404d
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
This article describes a novel preparation method for highly hydrophilic porous thin films via photocatalytic removal of a structure-directing agent (SDA) under UV-light irradiation at ambient temperature. Since this technique requires no calcination process, it can effectively coat surfaces that have low thermal resistance, such as polymer substrates. In the present study, Ti-containing mesoporous silica thin films (Ti-MSTF) were prepared on polycarbonate and quartz substrates using a newly developed method involving UV-light irradiation. The film surface wettabilities were investigated by water contact angle measurements. Complete removal of the SDA was confirmed by time-dependent changes in the FT-IR spectra under UV-light irradiation, which also suggested that Ti-oxide moieties in the mesoporous silica framework play a crucial role in the removal of the SDA. XRD, UV-vis and XAFS measurements revealed that the Ti-MSTF had a mesoporous structure and isolated Ti-oxide moieties. The water contact angle measurements indicated that the Ti-MSTF exhibited highly hydrophilic property after photocatalytic removal of the SDA, and maintained this property under dark conditions for several days.
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页码:236 / 241
页数:6
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