Controlled hydrolysis of titanium isopropoxide by small angle X-ray scattering

Qianqian Du; Jinghua Gu; Guang Mo; Yanru Wei; Wenjie Yin; Jia Li

doi:10.11949/j.issn.0438-1157.20170263

Controlled hydrolysis of titanium isopropoxide by small angle X-ray scattering

Qianqian Du
, Jinghua Gu^*
, Guang Mo
, Yanru Wei
, Wenjie Yin
, Jia Li

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University
CAS - Institute of High Energy Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Metal oxide sols can be prepared from metal alkoxides by hydrolyzation, which has been widely used in synthesis of nano-porous ceramic membranes by sol-gel method. However, the knowledge on hydrolysis mechanism of metal alkoxides is very limited. In this paper, TiO₂ sols were prepared by controlled hydrolyzation of titanium isopropoxide [Ti(i-OC₃H₇)₄] in isopropanol (i-C₃H₇OH). The formation of TiO₂ sols from the initial reactant mixtures with different molar ratios of H₂O/Ti(i-OC₃H₇)₄ [Ti(i-OC₃H₇)₄:H₂O:i-C₃H₇OH = 1:m:30] was charterized by small angle X-ray scattering (SAXS). The mechanism of formation and growth of colloidal particles is discussed. TiO₂ sol with a particle size less than 10 nm can be obtained. The formation and growth of colloidal particles are remarkably influenced by the molar ratio of H₂O/Ti(i-OC₃H₇)₄. When the molar ratio of H₂O/Ti(i-OC₃H₇)₄ ≥ 2.0, the stability of TiO₂ sol decreases with the molar ratio of H₂O/Ti(i-OC₃H₇)₄ increasing.

Original language	English
Pages (from-to)	3607-3615
Number of pages	9
Journal	Huagong Xuebao/CIESC Journal
Volume	68
Issue number	9
DOIs	https://doi.org/10.11949/j.issn.0438-1157.20170263
State	Published - 1 Sep 2017

Keywords

Hydrolysis of titanium isopropoxide
Particle size distribution
SAXS
Shape of colloidal particle
Stability
TiO sol

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10.11949/j.issn.0438-1157.20170263

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@article{6604735e6a0d4fc78cf4fe33c3e27101,

title = "Controlled hydrolysis of titanium isopropoxide by small angle X-ray scattering",

abstract = "Metal oxide sols can be prepared from metal alkoxides by hydrolyzation, which has been widely used in synthesis of nano-porous ceramic membranes by sol-gel method. However, the knowledge on hydrolysis mechanism of metal alkoxides is very limited. In this paper, TiO2 sols were prepared by controlled hydrolyzation of titanium isopropoxide [Ti(i-OC3H7)4] in isopropanol (i-C3H7OH). The formation of TiO2 sols from the initial reactant mixtures with different molar ratios of H2O/Ti(i-OC3H7)4 [Ti(i-OC3H7)4:H2O:i-C3H7OH = 1:m:30] was charterized by small angle X-ray scattering (SAXS). The mechanism of formation and growth of colloidal particles is discussed. TiO2 sol with a particle size less than 10 nm can be obtained. The formation and growth of colloidal particles are remarkably influenced by the molar ratio of H2O/Ti(i-OC3H7)4. When the molar ratio of H2O/Ti(i-OC3H7)4 ≥ 2.0, the stability of TiO2 sol decreases with the molar ratio of H2O/Ti(i-OC3H7)4 increasing.",

keywords = "Hydrolysis of titanium isopropoxide, Particle size distribution, SAXS, Shape of colloidal particle, Stability, TiO sol",

author = "Qianqian Du and Jinghua Gu and Guang Mo and Yanru Wei and Wenjie Yin and Jia Li",

year = "2017",

month = sep,

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doi = "10.11949/j.issn.0438-1157.20170263",

language = "英语",

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journal = "Huagong Xuebao/CIESC Journal",

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T1 - Controlled hydrolysis of titanium isopropoxide by small angle X-ray scattering

AU - Du, Qianqian

AU - Gu, Jinghua

AU - Mo, Guang

AU - Wei, Yanru

AU - Yin, Wenjie

AU - Li, Jia

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Metal oxide sols can be prepared from metal alkoxides by hydrolyzation, which has been widely used in synthesis of nano-porous ceramic membranes by sol-gel method. However, the knowledge on hydrolysis mechanism of metal alkoxides is very limited. In this paper, TiO2 sols were prepared by controlled hydrolyzation of titanium isopropoxide [Ti(i-OC3H7)4] in isopropanol (i-C3H7OH). The formation of TiO2 sols from the initial reactant mixtures with different molar ratios of H2O/Ti(i-OC3H7)4 [Ti(i-OC3H7)4:H2O:i-C3H7OH = 1:m:30] was charterized by small angle X-ray scattering (SAXS). The mechanism of formation and growth of colloidal particles is discussed. TiO2 sol with a particle size less than 10 nm can be obtained. The formation and growth of colloidal particles are remarkably influenced by the molar ratio of H2O/Ti(i-OC3H7)4. When the molar ratio of H2O/Ti(i-OC3H7)4 ≥ 2.0, the stability of TiO2 sol decreases with the molar ratio of H2O/Ti(i-OC3H7)4 increasing.

AB - Metal oxide sols can be prepared from metal alkoxides by hydrolyzation, which has been widely used in synthesis of nano-porous ceramic membranes by sol-gel method. However, the knowledge on hydrolysis mechanism of metal alkoxides is very limited. In this paper, TiO2 sols were prepared by controlled hydrolyzation of titanium isopropoxide [Ti(i-OC3H7)4] in isopropanol (i-C3H7OH). The formation of TiO2 sols from the initial reactant mixtures with different molar ratios of H2O/Ti(i-OC3H7)4 [Ti(i-OC3H7)4:H2O:i-C3H7OH = 1:m:30] was charterized by small angle X-ray scattering (SAXS). The mechanism of formation and growth of colloidal particles is discussed. TiO2 sol with a particle size less than 10 nm can be obtained. The formation and growth of colloidal particles are remarkably influenced by the molar ratio of H2O/Ti(i-OC3H7)4. When the molar ratio of H2O/Ti(i-OC3H7)4 ≥ 2.0, the stability of TiO2 sol decreases with the molar ratio of H2O/Ti(i-OC3H7)4 increasing.

KW - Hydrolysis of titanium isopropoxide

KW - Particle size distribution

KW - SAXS

KW - Shape of colloidal particle

KW - Stability

KW - TiO sol

UR - https://www.scopus.com/pages/publications/85092428302

U2 - 10.11949/j.issn.0438-1157.20170263

DO - 10.11949/j.issn.0438-1157.20170263

M3 - 文章

AN - SCOPUS:85092428302

SN - 0438-1157

VL - 68

SP - 3607

EP - 3615

JO - Huagong Xuebao/CIESC Journal

JF - Huagong Xuebao/CIESC Journal

IS - 9

ER -

Controlled hydrolysis of titanium isopropoxide by small angle X-ray scattering

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