Photocatalytic activity of SiO2-TiO2 nanoparticles prepared by sol-hydrothermal process

C. M. Whang; Y. K. Kim; J. G. Kim; W. I. Lee; Y. H. Kim

Photocatalytic activity of SiO₂-TiO₂ nanoparticles prepared by sol-hydrothermal process

C. M. Whang, Y. K. Kim, J. G. Kim, W. I. Lee, Y. H. Kim

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

[SiC₂][TiO₂]_1-x(x = 0.1, 0.2, 0.3, 0.4) powders were prepared by hydrothermal reaction of titanium isopropoxide (TIP) and tetraethyl-orthosilicate (TEOS) stabilized in acidic ethanol/water solution. The size and phase of TiO₂ particles were controlled by adjusting the SiO₂ content and the composition of the solvent system. The microstructure and photocatalytic activity of the prepared SiO ₂-TiO₂ nanoparticles were characterized by XRD, TEM, BET, Raman and UV-visible spectroscopic techniques. The major phase for all the prepared samples was anatase, The particle size of 0.3SiO₂-0. 7TiO₂ powders prepared with excess amount of ethanol (R _EtOH = EtOH/alkoxide molar ratio = 120) was about 8.7 nm, while that of the sample prepared with small amount of ethanol (R_EtOH = 4) was 9.9 nm. The photocatalytic activity of these composite powders under excess ethanol was 1.5 times higher than that of pure TiO₂ with respect to the decomposition of 1,4-dichlorobenzene (DCB).

Original language	English
Pages (from-to)	1117-1120
Number of pages	4
Journal	Materials Science Forum
Volume	449-452
Issue number	II
State	Published - 2004
Event	Designing, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials - Jeju Island, Korea, Republic of Duration: 5 Nov 2003 → 8 Nov 2003

Keywords

Photocatalyst
Sol-hydrothermal process
Solvent effect
Titania/silica

Cite this

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title = "Photocatalytic activity of SiO2-TiO2 nanoparticles prepared by sol-hydrothermal process",

abstract = "[SiC2][TiO2]1-x(x = 0.1, 0.2, 0.3, 0.4) powders were prepared by hydrothermal reaction of titanium isopropoxide (TIP) and tetraethyl-orthosilicate (TEOS) stabilized in acidic ethanol/water solution. The size and phase of TiO2 particles were controlled by adjusting the SiO2 content and the composition of the solvent system. The microstructure and photocatalytic activity of the prepared SiO 2-TiO2 nanoparticles were characterized by XRD, TEM, BET, Raman and UV-visible spectroscopic techniques. The major phase for all the prepared samples was anatase, The particle size of 0.3SiO2-0. 7TiO2 powders prepared with excess amount of ethanol (R EtOH = EtOH/alkoxide molar ratio = 120) was about 8.7 nm, while that of the sample prepared with small amount of ethanol (REtOH = 4) was 9.9 nm. The photocatalytic activity of these composite powders under excess ethanol was 1.5 times higher than that of pure TiO2 with respect to the decomposition of 1,4-dichlorobenzene (DCB).",

keywords = "Photocatalyst, Sol-hydrothermal process, Solvent effect, Titania/silica",

author = "Whang, {C. M.} and Kim, {Y. K.} and Kim, {J. G.} and Lee, {W. I.} and Kim, {Y. H.}",

year = "2004",

language = "English",

volume = "449-452",

pages = "1117--1120",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications Ltd.",

number = "II",

note = "Designing, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials ; Conference date: 05-11-2003 Through 08-11-2003",

}

TY - JOUR

T1 - Photocatalytic activity of SiO2-TiO2 nanoparticles prepared by sol-hydrothermal process

AU - Whang, C. M.

AU - Kim, Y. K.

AU - Kim, J. G.

AU - Lee, W. I.

AU - Kim, Y. H.

PY - 2004

Y1 - 2004

N2 - [SiC2][TiO2]1-x(x = 0.1, 0.2, 0.3, 0.4) powders were prepared by hydrothermal reaction of titanium isopropoxide (TIP) and tetraethyl-orthosilicate (TEOS) stabilized in acidic ethanol/water solution. The size and phase of TiO2 particles were controlled by adjusting the SiO2 content and the composition of the solvent system. The microstructure and photocatalytic activity of the prepared SiO 2-TiO2 nanoparticles were characterized by XRD, TEM, BET, Raman and UV-visible spectroscopic techniques. The major phase for all the prepared samples was anatase, The particle size of 0.3SiO2-0. 7TiO2 powders prepared with excess amount of ethanol (R EtOH = EtOH/alkoxide molar ratio = 120) was about 8.7 nm, while that of the sample prepared with small amount of ethanol (REtOH = 4) was 9.9 nm. The photocatalytic activity of these composite powders under excess ethanol was 1.5 times higher than that of pure TiO2 with respect to the decomposition of 1,4-dichlorobenzene (DCB).

AB - [SiC2][TiO2]1-x(x = 0.1, 0.2, 0.3, 0.4) powders were prepared by hydrothermal reaction of titanium isopropoxide (TIP) and tetraethyl-orthosilicate (TEOS) stabilized in acidic ethanol/water solution. The size and phase of TiO2 particles were controlled by adjusting the SiO2 content and the composition of the solvent system. The microstructure and photocatalytic activity of the prepared SiO 2-TiO2 nanoparticles were characterized by XRD, TEM, BET, Raman and UV-visible spectroscopic techniques. The major phase for all the prepared samples was anatase, The particle size of 0.3SiO2-0. 7TiO2 powders prepared with excess amount of ethanol (R EtOH = EtOH/alkoxide molar ratio = 120) was about 8.7 nm, while that of the sample prepared with small amount of ethanol (REtOH = 4) was 9.9 nm. The photocatalytic activity of these composite powders under excess ethanol was 1.5 times higher than that of pure TiO2 with respect to the decomposition of 1,4-dichlorobenzene (DCB).

KW - Photocatalyst

KW - Sol-hydrothermal process

KW - Solvent effect

KW - Titania/silica

UR - http://www.scopus.com/inward/record.url?scp=18544397162&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:18544397162

SN - 0255-5476

VL - 449-452

SP - 1117

EP - 1120

JO - Materials Science Forum

JF - Materials Science Forum

IS - II

T2 - Designing, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials

Y2 - 5 November 2003 through 8 November 2003

ER -

Photocatalytic activity of SiO₂-TiO₂ nanoparticles prepared by sol-hydrothermal process

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