Crystallization process of TiO2 nanoparticles in an acidic solution

被引：25

作者：

Shin, HH

Jung, HS

Hong, KS ^{[1
]}

Lee, JK

机构：

[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

CHEMISTRY LETTERS | 2004年 / 33卷 / 10期

关键词：

D O I：

10.1246/cl.2004.1382

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hydrolysis of titanium tetraisopropoxide followed by condensation at 30degreesC yields amorphous TiO2. Addition of nitric acid for peptization greatly accelerates the rate of amorphous to anatase conversion, resulting in an anatase with locally imperfect atomic structure. Further conversion to rutile in acidic solution has been observed and a plausible phase transformation process has been postulated.

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页码：1382 / 1383

页数：2

相关论文

共 11 条

[1] PEPTIZATION PROCESS IN THE SOL-GEL PREPARATION OF POROUS ANATASE (TIO2) [J].

BISCHOFF, BL ;

ANDERSON, MA .

CHEMISTRY OF MATERIALS, 1995, 7 (10) :1772-1778

[2]

Fujishima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2

[3] Kinetics of the anatase rutile transformation in TiO2 in the presence of Fe2O3 [J].

Gennari, FC ;

Pasquevich, DM .

JOURNAL OF MATERIALS SCIENCE, 1998, 33 (06) :1571-1578

[4] ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].

HOFFMANN, MR ;

MARTIN, ST ;

CHOI, WY ;

BAHNEMANN, DW .

CHEMICAL REVIEWS, 1995, 95 (01) :69-96

[5] PRECIPITATION OF RUTILE AND ANATASE (TIO2) FINE POWDERS AND THEIR CONVERSION TO BATIO3, SRTIO3, CATIO3 BY THE HYDROTHERMAL METHOD [J].

KUTTY, TRN ;

VIVEKANANDAN, R ;

MURUGARAJ, P .

MATERIALS CHEMISTRY AND PHYSICS, 1988, 19 (06) :533-546

[6] THERMODYNAMIC MODELING OF HYDROTHERMAL SYNTHESIS OF CERAMIC POWDERS [J].

LENCKA, MM ;

RIMAN, RE .

CHEMISTRY OF MATERIALS, 1993, 5 (01) :61-70

[7] LOW-TEMPERATURE NUCLEATION OF RUTILE OBSERVED BY RAMAN-SPECTROSCOPY DURING CRYSTALLIZATION OF TIO2 [J].

OCANA, M ;

GARCIARAMOS, JV ;

SERNA, CJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (07) :2010-2012

[8] Formation of rutile nuclei at anatase {112} twin interfaces and the phase transformation mechanism in nanocrystalline titania [J].

Penn, RL ;

Banfield, JF .

AMERICAN MINERALOGIST, 1999, 84 (5-6) :871-876

[9] THE RAMAN-SPECTRUM OF BROOKITE, TIO2 (PBCA, Z=8) [J].

TOMPSETT, GA ;

BOWMAKER, GA ;

COONEY, RP ;

METSON, JB ;

RODGERS, KA ;

SEAKINS, JM .

JOURNAL OF RAMAN SPECTROSCOPY, 1995, 26 (01) :57-62

[10] Sol-hydrothermal synthesis and hydrothermally structural evolution of nanocrystal titanium dioxide [J].

Wu, MM ;

Lin, G ;

Chen, DH ;

Wang, GG ;

He, D ;

Feng, SH ;

Xu, RR .

CHEMISTRY OF MATERIALS, 2002, 14 (05) :1974-1980