Enhanced photocatalytic oxidation properties in Pt-TiO2 thin films by grounding

Wooseok Nam; Jong Hyeok Park; Gui Young Han

doi:10.1007/s11814-009-0066-1

Enhanced photocatalytic oxidation properties in Pt-TiO₂ thin films by grounding

Wooseok Nam, Jong Hyeok Park, Gui Young Han

Department of Chemical and Biomolecular Engineering

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

3 Citations (Scopus)

Abstract

The rates of formaldehyde and toluene photocatalytic oxidation with different initial concentrations over a Pt-TiO₂ film were analyzed at both the grounded and non-grounded states. The photocatalytic oxidation rates at the grounded states were faster than in the non-grounded states under similar reaction conditions. The enhanced photocatalytic oxidation rates in the grounded state were attributed to the effective splitting of the electron-hole pairs as a result of the scavenging of photoexcited electrons through the ITO (indium tin oxide) glass to earth. The pseudo first order model showed good agreement with the experimentally obtained heterogeneous photocatalytic oxidation rates of formaldehyde and toluene.

Original language	English
Pages (from-to)	392-397
Number of pages	6
Journal	Korean Journal of Chemical Engineering
Volume	26
Issue number	2
DOIs	https://doi.org/10.1007/s11814-009-0066-1
Publication status	Published - 2009 Mar

Bibliographical note

Funding Information:
This research was performed for the Hydrogen Energy R & D Center, one of the 21st Century Frontier R & D program, funded by the Ministry of Education, science and technology of Korea.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

Access to Document

10.1007/s11814-009-0066-1

Cite this

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title = "Enhanced photocatalytic oxidation properties in Pt-TiO2 thin films by grounding",

abstract = "The rates of formaldehyde and toluene photocatalytic oxidation with different initial concentrations over a Pt-TiO2 film were analyzed at both the grounded and non-grounded states. The photocatalytic oxidation rates at the grounded states were faster than in the non-grounded states under similar reaction conditions. The enhanced photocatalytic oxidation rates in the grounded state were attributed to the effective splitting of the electron-hole pairs as a result of the scavenging of photoexcited electrons through the ITO (indium tin oxide) glass to earth. The pseudo first order model showed good agreement with the experimentally obtained heterogeneous photocatalytic oxidation rates of formaldehyde and toluene.",

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N2 - The rates of formaldehyde and toluene photocatalytic oxidation with different initial concentrations over a Pt-TiO2 film were analyzed at both the grounded and non-grounded states. The photocatalytic oxidation rates at the grounded states were faster than in the non-grounded states under similar reaction conditions. The enhanced photocatalytic oxidation rates in the grounded state were attributed to the effective splitting of the electron-hole pairs as a result of the scavenging of photoexcited electrons through the ITO (indium tin oxide) glass to earth. The pseudo first order model showed good agreement with the experimentally obtained heterogeneous photocatalytic oxidation rates of formaldehyde and toluene.

AB - The rates of formaldehyde and toluene photocatalytic oxidation with different initial concentrations over a Pt-TiO2 film were analyzed at both the grounded and non-grounded states. The photocatalytic oxidation rates at the grounded states were faster than in the non-grounded states under similar reaction conditions. The enhanced photocatalytic oxidation rates in the grounded state were attributed to the effective splitting of the electron-hole pairs as a result of the scavenging of photoexcited electrons through the ITO (indium tin oxide) glass to earth. The pseudo first order model showed good agreement with the experimentally obtained heterogeneous photocatalytic oxidation rates of formaldehyde and toluene.

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