In situ XANES studies of CuO/TiO2 thin films during photocatalytic degradation of CHCl3

Tung Li Hsiung; H. Paul Wang; Yang Ming Lu; M. C. Hsiao

doi:10.1016/j.radphyschem.2005.11.024

In situ XANES studies of CuO/TiO₂ thin films during photocatalytic degradation of CHCl₃

Tung Li Hsiung, H. Paul Wang, Yang Ming Lu, M. C. Hsiao

Department of Environmental Engineering

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

25 Citations (Scopus)

Abstract

Speciation of titanium in the CuO/TiO₂ thin film (synthesized by radio frequency magnetron sputtering) during photocatalytic decomposition of CHCl₃ has been studied by in situ X-ray absorption near-edge structural (XANES) spectroscopy. Little perturbation was observed in the Ti K-edge XANES spectra of the CuO/TiO₂ during photocatalysis. However, by prolonging the UV/VIS radiation to 90 min, the copper K-edge white line absorbance was enhanced suggesting electron donation (from the encapsulated TiO₂) to surface CuO, which was also observed by electron spectroscopy for chemical analysis (ESCA) spectroscopy.

Original language	English
Pages (from-to)	2054-2057
Number of pages	4
Journal	Radiation Physics and Chemistry
Volume	75
Issue number	11 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.radphyschem.2005.11.024
Publication status	Published - 2006 Nov

All Science Journal Classification (ASJC) codes

Radiation

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10.1016/j.radphyschem.2005.11.024

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@article{a5cbd0f7276242f78ef8c97f9505e173,

title = "In situ XANES studies of CuO/TiO2 thin films during photocatalytic degradation of CHCl3 ",

abstract = "Speciation of titanium in the CuO/TiO2 thin film (synthesized by radio frequency magnetron sputtering) during photocatalytic decomposition of CHCl3 has been studied by in situ X-ray absorption near-edge structural (XANES) spectroscopy. Little perturbation was observed in the Ti K-edge XANES spectra of the CuO/TiO2 during photocatalysis. However, by prolonging the UV/VIS radiation to 90 min, the copper K-edge white line absorbance was enhanced suggesting electron donation (from the encapsulated TiO2) to surface CuO, which was also observed by electron spectroscopy for chemical analysis (ESCA) spectroscopy.",

author = "{Li Hsiung}, Tung and Wang, {H. Paul} and Lu, {Yang Ming} and Hsiao, {M. C.}",

note = "Funding Information: The financial support of the National Science Council, Taiwan is gratefully. We also thank Prof. Y.W. Yang and Dr. Jyh-Fu Lee of the NSRRC for their XAS experimental assistances.",

year = "2006",

month = nov,

doi = "10.1016/j.radphyschem.2005.11.024",

language = "English",

volume = "75",

pages = "2054--2057",

journal = "Radiation Physics and Chemistry",

issn = "0969-806X",

publisher = "Elsevier Limited",

number = "11 SPEC. ISS.",

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TY - JOUR

T1 - In situ XANES studies of CuO/TiO2 thin films during photocatalytic degradation of CHCl3

AU - Li Hsiung, Tung

AU - Wang, H. Paul

AU - Lu, Yang Ming

AU - Hsiao, M. C.

N1 - Funding Information: The financial support of the National Science Council, Taiwan is gratefully. We also thank Prof. Y.W. Yang and Dr. Jyh-Fu Lee of the NSRRC for their XAS experimental assistances.

PY - 2006/11

Y1 - 2006/11

N2 - Speciation of titanium in the CuO/TiO2 thin film (synthesized by radio frequency magnetron sputtering) during photocatalytic decomposition of CHCl3 has been studied by in situ X-ray absorption near-edge structural (XANES) spectroscopy. Little perturbation was observed in the Ti K-edge XANES spectra of the CuO/TiO2 during photocatalysis. However, by prolonging the UV/VIS radiation to 90 min, the copper K-edge white line absorbance was enhanced suggesting electron donation (from the encapsulated TiO2) to surface CuO, which was also observed by electron spectroscopy for chemical analysis (ESCA) spectroscopy.

AB - Speciation of titanium in the CuO/TiO2 thin film (synthesized by radio frequency magnetron sputtering) during photocatalytic decomposition of CHCl3 has been studied by in situ X-ray absorption near-edge structural (XANES) spectroscopy. Little perturbation was observed in the Ti K-edge XANES spectra of the CuO/TiO2 during photocatalysis. However, by prolonging the UV/VIS radiation to 90 min, the copper K-edge white line absorbance was enhanced suggesting electron donation (from the encapsulated TiO2) to surface CuO, which was also observed by electron spectroscopy for chemical analysis (ESCA) spectroscopy.

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SN - 0969-806X

VL - 75

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JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

IS - 11 SPEC. ISS.

ER -

In situ XANES studies of CuO/TiO₂ thin films during photocatalytic degradation of CHCl₃

Abstract

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