Photocatalytic characteristics of TiO2 supported on SiO2

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The photocatalytic decomposition of acetaldehyde was carried out on TiO2/SiO2. The presence of a support (SiO2) in TiO2/SiO2 helped to promote the efficiency of the photocatalyst. The silica support enhanced the effective surface area of TiO2 and adsorption of acetaldehyde on TiO2/SiO2. TiO2/SiO2 synthesized from Ti(SO4)2 showed promoting effect on acetaldehyde decomposition. The XPS results revealed that TiO2/SiO2 prepared with Ti(SO4)2 generated SO42- sites on the TiO2 surface. The increased acidity could promote the adsorption of acetaldehyde and photocatalytic degradation of acetaldehyde. The sulfate ion seemed to generate the bifunctional sites (acid sites and photoactive sites) and promoted the acetaldehyde decomposition on TiO2/SiO2.

Original languageEnglish
Pages (from-to)849-859
Number of pages11
JournalResearch on Chemical Intermediates
Volume29
Issue number7-9
DOIs
Publication statusPublished - 2003 Dec 1

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Acetaldehyde
Decomposition
Adsorption
Photocatalysts
Catalyst supports
Acidity
Silicon Dioxide
Sulfates
TiO2-SiO2
X ray photoelectron spectroscopy
Ions
Degradation
Acids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

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title = "Photocatalytic characteristics of TiO2 supported on SiO2",
abstract = "The photocatalytic decomposition of acetaldehyde was carried out on TiO2/SiO2. The presence of a support (SiO2) in TiO2/SiO2 helped to promote the efficiency of the photocatalyst. The silica support enhanced the effective surface area of TiO2 and adsorption of acetaldehyde on TiO2/SiO2. TiO2/SiO2 synthesized from Ti(SO4)2 showed promoting effect on acetaldehyde decomposition. The XPS results revealed that TiO2/SiO2 prepared with Ti(SO4)2 generated SO42- sites on the TiO2 surface. The increased acidity could promote the adsorption of acetaldehyde and photocatalytic degradation of acetaldehyde. The sulfate ion seemed to generate the bifunctional sites (acid sites and photoactive sites) and promoted the acetaldehyde decomposition on TiO2/SiO2.",
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Photocatalytic characteristics of TiO2 supported on SiO2. / Shul, Yong-Gun; Kim, Hyun Jong; Haam, Seungjoo; Han, Haksoo.

In: Research on Chemical Intermediates, Vol. 29, No. 7-9, 01.12.2003, p. 849-859.

Research output: Contribution to journalArticle

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T1 - Photocatalytic characteristics of TiO2 supported on SiO2

AU - Shul, Yong-Gun

AU - Kim, Hyun Jong

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AU - Han, Haksoo

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AB - The photocatalytic decomposition of acetaldehyde was carried out on TiO2/SiO2. The presence of a support (SiO2) in TiO2/SiO2 helped to promote the efficiency of the photocatalyst. The silica support enhanced the effective surface area of TiO2 and adsorption of acetaldehyde on TiO2/SiO2. TiO2/SiO2 synthesized from Ti(SO4)2 showed promoting effect on acetaldehyde decomposition. The XPS results revealed that TiO2/SiO2 prepared with Ti(SO4)2 generated SO42- sites on the TiO2 surface. The increased acidity could promote the adsorption of acetaldehyde and photocatalytic degradation of acetaldehyde. The sulfate ion seemed to generate the bifunctional sites (acid sites and photoactive sites) and promoted the acetaldehyde decomposition on TiO2/SiO2.

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