Photocatalytic characteristics of TiO2 supported on SiO2

Yong Gun Shul; Hyun Jong Kim; Seung Joo Haam; Hak Soo Han

doi:10.1163/156856703322601852

Photocatalytic characteristics of TiO₂ supported on SiO₂

Yong Gun Shul, Hyun Jong Kim, Seung Joo Haam, Hak Soo Han

Department of Chemical and Biomolecular Engineering

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

25 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 SO₄^2- 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 language	English
Pages (from-to)	849-859
Number of pages	11
Journal	Research on Chemical Intermediates
Volume	29
Issue number	7-9
DOIs	https://doi.org/10.1163/156856703322601852
Publication status	Published - 2003

Bibliographical note

Funding Information:
This work was supported by Korea Research Foundation Grant (KRF-2001-005-E00030) and Ministry of Science and Technology of Korea through the National Research Laboratory program. In addition, we deeply appreciate the Center for Ultramicrochemical Process Systems (CUPS).

All Science Journal Classification (ASJC) codes

Chemistry(all)

Access to Document

10.1163/156856703322601852

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.",

author = "Shul, {Yong Gun} and Kim, {Hyun Jong} and Haam, {Seung Joo} and Han, {Hak Soo}",

note = "Funding Information: This work was supported by Korea Research Foundation Grant (KRF-2001-005-E00030) and Ministry of Science and Technology of Korea through the National Research Laboratory program. In addition, we deeply appreciate the Center for Ultramicrochemical Process Systems (CUPS).",

year = "2003",

doi = "10.1163/156856703322601852",

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T1 - Photocatalytic characteristics of TiO2 supported on SiO2

AU - Shul, Yong Gun

AU - Kim, Hyun Jong

AU - Haam, Seung Joo

AU - Han, Hak Soo

N1 - Funding Information: This work was supported by Korea Research Foundation Grant (KRF-2001-005-E00030) and Ministry of Science and Technology of Korea through the National Research Laboratory program. In addition, we deeply appreciate the Center for Ultramicrochemical Process Systems (CUPS).

PY - 2003

Y1 - 2003

N2 - 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.

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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