NiTiO3 nanoparticles encapsulated with SiO2 prepared by sol-gel method

被引：16

作者：

Lopes, K. P. ^{[1
]}

Cavalcante, L. S. ^{[1
]}

Simoes, A. Z. ^{[2
]}

Goncalves, R. F. ^{[1
]}

Escote, M. T. ^{[3
]}

Varela, J. A. ^{[2
]}

Longo, E. ^{[2
]}

Leite, E. R. ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Quim, Lab Interdisciplinar Electroquim & Ceram, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Estadual Paulista, Inst Quim, Dept Quim Fis, Lab Interdisciplinar Ceram, BR-14801907 Araraquara, SP, Brazil

[3] Univ Fed ABC, Ctr Engn, BR-09090400 Santo Andre, SP, Brazil

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2008年 / 45卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

nanoparticles; coating; sol-gel method; NiTiO3; silica;

D O I：

10.1007/s10971-007-1649-0

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：

NiTiO3 (NTO) nanoparticles encapsulated with SiO2 were prepared by the sol-gel method resulting on core-shell structure. Changes on isoelectric point as a function of silica were evaluated by means of zeta potential. The NTO nanoparticles heat treated at 600 degrees C were characterized by X-ray diffraction, transmission electron microscopy (TEM) and energy dispersive X-ray analysis. TEM observations showed that the mean size of NTO is in the range of 2.5-42.5 nm while the thickness of SiO2 shell attained 1.5-3.5 nm approximately.

引用

页码：151 / 155

页数：5

共 32 条

[1] Synthesis, characterization, and microwave dielectric properties of ATiO3 (A=Co, Mn, Ni) ceramics [J].

Anjana, Prabhakaran Sreekumari ;

Sebastian, Mailadil Thomas .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (07) :2114-2117

[2] Sol-gel nanocoating: An approach to the preparation of structured materials [J].

Caruso, RA ;

Antonietti, M .

CHEMISTRY OF MATERIALS, 2001, 13 (10) :3272-3282

[3] Structure, sintering behavior and dielectric properties of silica-coated BaTiO3 [J].

Chen, RZ ;

Cui, AL ;

Wang, HH ;

Gui, ZL ;

Li, LT .

MATERIALS LETTERS, 2002, 54 (04) :314-317

[4] Synthesis by the polymeric precursor method and characterization of undoped and Sn, Cr and V-doped ZrTiO4 [J].

de Lucena, PR ;

Pessoa-Netob, OD ;

dos Santos, IMG ;

Souza, AG ;

Longo, E ;

Varela, JA .

JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 397 (1-2) :255-259

[5] Nickel titanate nanofibers by electrospinning [J].

Dharmaraj, N ;

Park, HC ;

Kim, CK ;

Kim, HY ;

Lee, DR .

MATERIALS CHEMISTRY AND PHYSICS, 2004, 87 (01) :5-9

[6]

dos Santos IMG, 2000, J EUR CERAM SOC, V20, P2407, DOI 10.1016/S0955-2219(00)00130-8

[7] Synthesis of titania-coated silica nanoparticles using ono-ionic water-in-oil [J].

Fu, XA ;

Qutubuddin, S .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2001, 178 (1-3) :151-156

[8] THE SOL-GEL PROCESS [J].

HENCH, LL ;

WEST, JK .

CHEMICAL REVIEWS, 1990, 90 (01) :33-72

[9] Low-temperature nanoparticle-directed solid-state synthesis of ternary and quaternary transition metal oxides [J].

Henkes, AE ;

Bauer, JC ;

Sra, AK ;

Johnson, RD ;

Cable, RE ;

Schaak, RE .

CHEMISTRY OF MATERIALS, 2006, 18 (02) :567-571

[10] Unit cell refinement from powder diffraction data: The use of regression diagnostics [J].

Holland, TJB ;

Redfern, SAT .

MINERALOGICAL MAGAZINE, 1997, 61 (01) :65-77

← 1 2 3 4 →