Supercritical Hydrothermal Synthesis of Carboxylic Acid-surface-functionalized TiO2 Nanocrystals: pH Sensitive Dispersion and Hybridization with Organic Compounds

被引：17

作者：

Arita, Toshihiko ^{[1
]}

Moriya, Ken-ichi ^{[2
]}

Minami, Kimitaka ^{[3
]}

Naka, Takashi ^{[4
]}

Adschiri, Tadafumi ^{[3
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Dept Chem, Grad Sch Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan

[3] Tohoku Univ, WPI Res Ctr, Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

CHEMISTRY LETTERS | 2010年 / 39卷 / 09期

关键词：

GOLD NANOPARTICLES; KINETICS;

D O I：

10.1246/cl.2010.961

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Surface-functionalized TiO2 (anatase) nanocrystals (NCs) (avg. d = 6.7 +/- 1.6 Tun) were synthesized by a supercritical hydrothermal method. A phosphonic acid derivative was used as surface modifier of TiO2 NCs. It was verified that the phosphonic acids were bound to the surface of TiO2 with very strong binding energy. The TiO2 NCs also exhibited extraordinarily high chemical stability. Such a strong binding between the phosphonic acid modifier and TiO2 had not been obtained by any other methods. The TiO2 NC showed sharp pH sensitive dispersion. Because of the functional as well as stable surface modifier layer, further manipulations on the surface using chemical reagents could be possible.

引用

页码：961 / 963

页数：3

共 16 条

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[Anonymous], HYBRID MAT

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