Effect of HCl on the PPO assisted sol-gel synthesis of olivine-type Co2SiO4 ultrafine particles

被引：34

作者：

Cui, Hongtao ^{[1
]}

Zayat, Marcos ^{[1
]}

Levy, David | ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2006年 / 40卷 / 01期

关键词：

sol-gel; particles; mixed oxide; epoxide;

D O I：

10.1007/s10971-006-8216-y

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Olivine-type Co2SiO4 ultrafine particles were synthesized by a sol-gel method using propylene oxide as a gelation agent. Owing to the high homogeneity of the intermediate gel precursor, the usage of this epoxide method results in a substantial reduction of calcination temperature and time as compared with the solid-state route, and a great reduction of calcination time as compared with other wet-chemistry routes. This high homogeneity is obtained by the usage of an appropriate amount of HCl, as a catalyst that matches the rate of hydrolysis of TEOS and the metal ions, allowing the formation of Si-O-Co bonds.

引用

收藏

页码：83 / 87

页数：5

相关论文

共 22 条

[1] Silicon oxide in an iron(III) oxide matrix: the sol-gel synthesis and characterization of Fe-Si mixed oxide nanocomposites that contain iron oxide as the major phase [J].

Clapsaddle, BJ ;

Gash, AE ;

Satcher, JH ;

Simpson, RL .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2003, 331 (1-3) :190-201

[2] Nanoparticle synthesis of willemite doped with cobalt ions (Co0.05Zn1.95SiO4) by an epoxide-assisted sol-gel method [J].

Cui, HT ;

Zayat, M ;

Levy, D .

CHEMISTRY OF MATERIALS, 2005, 17 (22) :5562-5566

[3] Sol-gel synthesis of nanoscaled spinels using propylene oxide as a gelation agent [J].

Cui, HT ;

Zayat, M ;

Levy, D .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2005, 35 (03) :175-181

[4] A sol-gel route using propylene oxide as a gelation agent to synthesize spherical NiAl2O4 nanoparticles [J].

Cui, HT ;

Zayat, M ;

Levy, D .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2005, 351 (24-26) :2102-2106

[5] Use of ethylene oxide in the sol-gel synthesis of α-Fe2O3 nanoparticles from Fe(III) salts [J].

Dong, WT ;

Zhu, CS .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (06) :1676-1683

[6] Synthesis, structural and chemical properties of iron oxide-silica aerogels [J].

Fabrizioli, P ;

Bürgi, T ;

Burgener, M ;

van Doorslaer, S ;

Baiker, A .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (03) :619-630

[7] New sol-gel synthetic route to transition and main-group metal oxide aerogels using inorganic salt precursors [J].

Gash, AE ;

Tillotson, TM ;

Satcher, JH ;

Hrubesh, LW ;

Simpson, RL .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2001, 285 (1-3) :22-28

[8] Use of epoxides in the sol-gel synthesis of porous iron(III) oxide monoliths from Fe(III) salts [J].

Gash, AE ;

Tillotson, TM ;

Satcher, JH ;

Poco, JF ;

Hrubesh, LW ;

Simpson, RL .

CHEMISTRY OF MATERIALS, 2001, 13 (03) :999-1007

[9]

ITOH H, 1993, J CERAM SOC JPN, V101, P1081

[10] Influence of the silica based matrix on the formation of iron oxide nanoparticles in the Fe2O3-SiO2 system, obtained by sol-gel method [J].

Jitianu, A ;

Crisan, M ;

Meghea, A ;

Rau, I ;

Zaharescu, M .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (05) :1401-1407