Spectral and photocatalytic characteristics of TiO2CVD films on quartz

A. Mills; S. Lee; A. Lepre; I.P. Parkin; S.A. O'Neill

doi:10.1039/b205715h

Spectral and photocatalytic characteristics of TiO2CVD films on quartz

A. Mills, S. Lee, A. Lepre, I.P. Parkin, S.A. O'Neill

Pure And Applied Chemistry

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

80 Citations (Scopus)

Abstract

A series of novel CVD films of titanium(IV) oxide of different thicknesses, spanning the range 10-91 nm, are prepared on quartz, via the reaction of titanium(IV) chloride and ethyl acetate, using a CVD technique. The films are clear, mechanically robust and comprise thin layer of nanocrystalline anatase titania of different thicknesses that absorb UV light. The UV-Visible spectral profiles of all the CVD TiO2 films of different thickness are the same and obey Lambert's law (absorbance film thickness). A plot of the reciprocal length for the TiO2 coating versus wavelength is reported. The photocatalytic activity of each film to mediate the destruction of a thin layer of stearic acid is investigated. The rate depends directly upon the fraction of light absorbed and the apparent quantum yield for the overall process is 0.00035, which appears low compared with that for sol-gel TiO2 films.

Original language	English
Pages (from-to)	865-868
Number of pages	3
Journal	Photochemical and Photobiological Sciences
Volume	1
Issue number	11
DOIs	https://doi.org/10.1039/b205715h
Publication status	Published - Nov 2002

Keywords

TITANIUM-DIOXIDE
PHOTODEGRADATION
SEMICONDUCTOR
PARTICLES

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title = "Spectral and photocatalytic characteristics of TiO2CVD films on quartz",

abstract = "A series of novel CVD films of titanium(IV) oxide of different thicknesses, spanning the range 10-91 nm, are prepared on quartz, via the reaction of titanium(IV) chloride and ethyl acetate, using a CVD technique. The films are clear, mechanically robust and comprise thin layer of nanocrystalline anatase titania of different thicknesses that absorb UV light. The UV-Visible spectral profiles of all the CVD TiO2 films of different thickness are the same and obey Lambert's law (absorbance film thickness). A plot of the reciprocal length for the TiO2 coating versus wavelength is reported. The photocatalytic activity of each film to mediate the destruction of a thin layer of stearic acid is investigated. The rate depends directly upon the fraction of light absorbed and the apparent quantum yield for the overall process is 0.00035, which appears low compared with that for sol-gel TiO2 films.",

keywords = "TITANIUM-DIOXIDE, PHOTODEGRADATION, SEMICONDUCTOR, PARTICLES",

author = "A. Mills and S. Lee and A. Lepre and I.P. Parkin and S.A. O'Neill",

year = "2002",

month = nov,

doi = "10.1039/b205715h",

language = "English",

volume = "1",

pages = "865--868",

journal = "Photochemical and Photobiological Sciences ",

issn = "1474-905X",

publisher = "Royal Society of Chemistry",

number = "11",

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TY - JOUR

T1 - Spectral and photocatalytic characteristics of TiO2CVD films on quartz

AU - Mills, A.

AU - Lee, S.

AU - Lepre, A.

AU - Parkin, I.P.

AU - O'Neill, S.A.

PY - 2002/11

Y1 - 2002/11

N2 - A series of novel CVD films of titanium(IV) oxide of different thicknesses, spanning the range 10-91 nm, are prepared on quartz, via the reaction of titanium(IV) chloride and ethyl acetate, using a CVD technique. The films are clear, mechanically robust and comprise thin layer of nanocrystalline anatase titania of different thicknesses that absorb UV light. The UV-Visible spectral profiles of all the CVD TiO2 films of different thickness are the same and obey Lambert's law (absorbance film thickness). A plot of the reciprocal length for the TiO2 coating versus wavelength is reported. The photocatalytic activity of each film to mediate the destruction of a thin layer of stearic acid is investigated. The rate depends directly upon the fraction of light absorbed and the apparent quantum yield for the overall process is 0.00035, which appears low compared with that for sol-gel TiO2 films.

AB - A series of novel CVD films of titanium(IV) oxide of different thicknesses, spanning the range 10-91 nm, are prepared on quartz, via the reaction of titanium(IV) chloride and ethyl acetate, using a CVD technique. The films are clear, mechanically robust and comprise thin layer of nanocrystalline anatase titania of different thicknesses that absorb UV light. The UV-Visible spectral profiles of all the CVD TiO2 films of different thickness are the same and obey Lambert's law (absorbance film thickness). A plot of the reciprocal length for the TiO2 coating versus wavelength is reported. The photocatalytic activity of each film to mediate the destruction of a thin layer of stearic acid is investigated. The rate depends directly upon the fraction of light absorbed and the apparent quantum yield for the overall process is 0.00035, which appears low compared with that for sol-gel TiO2 films.

KW - TITANIUM-DIOXIDE

KW - PHOTODEGRADATION

KW - SEMICONDUCTOR

KW - PARTICLES

UR - http://www.rsc.org/Publishing/Journals/PP/article.asp?doi=b205715h

U2 - 10.1039/b205715h

DO - 10.1039/b205715h

M3 - Article

SN - 1474-905X

VL - 1

SP - 865

EP - 868

JO - Photochemical and Photobiological Sciences

JF - Photochemical and Photobiological Sciences

IS - 11

ER -

Spectral and photocatalytic characteristics of TiO2CVD films on quartz

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