Preparation of W-Containing Mesoporous Silica Thin Films and Their Surface Hydrophilic Properties

被引：6

作者：

Horiuchi, Yu ^{[1
]}

Kamegawa, Takashi ^{[1
]}

Mori, Kohsuke ^{[1
]}

Yamashita, Hiromi ^{[1
]}

Nishiyama, Norikazu ^{[2
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, 2-1 Yamada oka, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Dept Mat Engn Sci, Toyonaka, Osaka 5650871, Japan

来源：

E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY | 2009年 / 7卷 / 141-144期

关键词：

Wetting; Tungsten oxide; Silicon oxides; Superhydrophilicity; Mesoporous silica; Thin film;

D O I：

10.1380/ejssnt.2009.141

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The present paper deals with surface superhydrophilic properties of mesoporous silica thin films containing tungsten oxide species (W-MSTFs) prepared by a sol-gel/spin coating method. The local structure around tungsten oxide species as well as photoinduced surface properties have been investigated by XRD, UV-vis, and water contact angle (CA) measurements. These investigations showed that tungsten oxide species are tetrahedrally-coordinated and exist in isolated states. The water CA measurements also demonstrated that W-MSTFs exhibited the high surface hydrophilic property without the UV-light irradiation. It was also found that the UV-light irradiation led to the decrease in the CA of W-MSTFs, indicating that W-MSTFs showed photoinduced superhydrophilicity. Furthermore, very low CA below 10 degrees was maintained for about three months in the dark conditions after the UV-light irradiation.

引用

页码：141 / 144

页数：4

共 15 条

[1] From microporous to mesoporous molecular sieve materials and their use in catalysis [J].

Corma, A .

CHEMICAL REVIEWS, 1997, 97 (06) :2373-2419

[2] Preparation of superhydrophilic mesoporous silica thin films containing single-site photocatalyst (Ti, V, Cr, Mo, and W oxide moieties) [J].

Horiuchi, Yu ;

Mori, Kohsuke ;

Nishiyama, Norikazu ;

Yamashita, Hiromi .

CHEMISTRY LETTERS, 2008, 37 (07) :748-749

[3] Synthesis of new, nanoporous carbon with hexagonally ordered mesostructure [J].

Jun, S ;

Joo, SH ;

Ryoo, R ;

Kruk, M ;

Jaroniec, M ;

Liu, Z ;

Ohsuna, T ;

Terasaki, O .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (43) :10712-10713

[4] Extrusion polymerization: Catalyzed synthesis of crystalline linear polyethylene nanofibers within a mesoporous silica [J].

Kageyama, K ;

Tamazawa, J ;

Aida, T .

SCIENCE, 1999, 285 (5436) :2113-2115

[5] Highly active deep HDS catalysts prepared using Mo and W heteropolyacids supported on SBA-15 [J].

Lizama, Lilia ;

Klimova, Tatiana .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 82 (3-4) :139-150

[6] Preparation of (Cr, Ti)-Containing Mesoporous Silica Photocatalyst Using a Photo-assisted Deposition Method: Selective Oxidation of Propene with Oxygen under Visible Light Irradiation [J].

Masui, Yosuke ;

Ohshiro, Satoshi ;

Anpo, Masakazu ;

Ohmichi, Tetsutaro ;

Yamashita, Hiromi ;

Katayama, Iwao .

E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY, 2005, 3 :448-452

[7] Synthesis and multifunctional properties of superparamagnetic iron oxide nanoparticles coated with mesoporous silica involving single-site Ti-oxide moiety [J].

Mori, Kohsuke ;

Kondo, Yuichi ;

Morimoto, Shotaro ;

Yamashita, Hiromi .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (02) :397-404

[8] Vapor-phase synthesis of mesoporous SiO2-P2O5 thin films [J].

Nishiyama, Norikazu ;

Kaihara, Junji ;

Nishiyama, Yuko ;

Egashira, Yasuyuki ;

Ueyama, Korekazu .

LANGMUIR, 2007, 23 (09) :4746-4748

[9] Transparent self-standing films of titanium-containing nanoporous silica [J].

Ogawa, M ;

Ikeue, K ;

Anpo, M .

CHEMISTRY OF MATERIALS, 2001, 13 (09) :2900-2904

[10] Light-induced amphiphilic surfaces [J].

Wang, R ;

Hashimoto, K ;

Fujishima, A ;

Chikuni, M ;

Kojima, E ;

Kitamura, A ;

Shimohigoshi, M ;

Watanabe, T .

NATURE, 1997, 388 (6641) :431-432

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