Self-cleaning titania films: an overview of direct, lateral and remote photo-oxidation processes

A. Mills, S. Hodgen, S-K. Lee

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

An overview of the recent investigations into the direct, lateral and remote oxidation of carbon-containing materials is given. The overview begins with the pioneering work of Fujishima and his co-workers involving the remote bleaching of methylene blue by UV-irradiation of titania in the gas phase. The further research of these workers conducted on the remote photocatalytic destruction of various polymers and dyes is then discussed briefly. The notable work of Paz and his co-workers on the lateral, but not remote, oxidation of octadecyltrichlorosilane (OTS) by photoeteched titania films is then examined. The striking observations associated with the lateral oxidation of soot by UV-irradiated thin titania films, reported by Choi and his colleagues, are reported. Finally, the results of our most recent work on soot covered titania films in which the direct, lateral and remote oxidation of soot by UV-irradiated thick titania films could be observed visually is discussed. The most likely agent responsible for these photocatalytic oxidation processes is considered and a suitable candidate, hydroxyl radicals, suggested.
LanguageEnglish
Pages295-308
Number of pages13
JournalResearch on Chemical Intermediates
Volume31
Issue number4-6
DOIs
Publication statusPublished - 2005

Fingerprint

Photooxidation
Cleaning
Soot
Oxidation
Methylene Blue
Bleaching
Hydroxyl Radical
Polymers
Coloring Agents
Carbon
Gases
titanium dioxide
Irradiation

Keywords

  • titania
  • self-cleaning film
  • photo-oxidation
  • photooxidation

Cite this

@article{6f0130162ee3466e9d5cc377a8b6ec96,
title = "Self-cleaning titania films: an overview of direct, lateral and remote photo-oxidation processes",
abstract = "An overview of the recent investigations into the direct, lateral and remote oxidation of carbon-containing materials is given. The overview begins with the pioneering work of Fujishima and his co-workers involving the remote bleaching of methylene blue by UV-irradiation of titania in the gas phase. The further research of these workers conducted on the remote photocatalytic destruction of various polymers and dyes is then discussed briefly. The notable work of Paz and his co-workers on the lateral, but not remote, oxidation of octadecyltrichlorosilane (OTS) by photoeteched titania films is then examined. The striking observations associated with the lateral oxidation of soot by UV-irradiated thin titania films, reported by Choi and his colleagues, are reported. Finally, the results of our most recent work on soot covered titania films in which the direct, lateral and remote oxidation of soot by UV-irradiated thick titania films could be observed visually is discussed. The most likely agent responsible for these photocatalytic oxidation processes is considered and a suitable candidate, hydroxyl radicals, suggested.",
keywords = "titania, self-cleaning film, photo-oxidation, photooxidation",
author = "A. Mills and S. Hodgen and S-K. Lee",
year = "2005",
doi = "10.1163/1568567053956644",
language = "English",
volume = "31",
pages = "295--308",
journal = "Research on Chemical Intermediates",
issn = "0922-6168",
number = "4-6",

}

Self-cleaning titania films: an overview of direct, lateral and remote photo-oxidation processes. / Mills, A.; Hodgen, S.; Lee, S-K.

In: Research on Chemical Intermediates, Vol. 31, No. 4-6, 2005, p. 295-308.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Self-cleaning titania films: an overview of direct, lateral and remote photo-oxidation processes

AU - Mills, A.

AU - Hodgen, S.

AU - Lee, S-K.

PY - 2005

Y1 - 2005

N2 - An overview of the recent investigations into the direct, lateral and remote oxidation of carbon-containing materials is given. The overview begins with the pioneering work of Fujishima and his co-workers involving the remote bleaching of methylene blue by UV-irradiation of titania in the gas phase. The further research of these workers conducted on the remote photocatalytic destruction of various polymers and dyes is then discussed briefly. The notable work of Paz and his co-workers on the lateral, but not remote, oxidation of octadecyltrichlorosilane (OTS) by photoeteched titania films is then examined. The striking observations associated with the lateral oxidation of soot by UV-irradiated thin titania films, reported by Choi and his colleagues, are reported. Finally, the results of our most recent work on soot covered titania films in which the direct, lateral and remote oxidation of soot by UV-irradiated thick titania films could be observed visually is discussed. The most likely agent responsible for these photocatalytic oxidation processes is considered and a suitable candidate, hydroxyl radicals, suggested.

AB - An overview of the recent investigations into the direct, lateral and remote oxidation of carbon-containing materials is given. The overview begins with the pioneering work of Fujishima and his co-workers involving the remote bleaching of methylene blue by UV-irradiation of titania in the gas phase. The further research of these workers conducted on the remote photocatalytic destruction of various polymers and dyes is then discussed briefly. The notable work of Paz and his co-workers on the lateral, but not remote, oxidation of octadecyltrichlorosilane (OTS) by photoeteched titania films is then examined. The striking observations associated with the lateral oxidation of soot by UV-irradiated thin titania films, reported by Choi and his colleagues, are reported. Finally, the results of our most recent work on soot covered titania films in which the direct, lateral and remote oxidation of soot by UV-irradiated thick titania films could be observed visually is discussed. The most likely agent responsible for these photocatalytic oxidation processes is considered and a suitable candidate, hydroxyl radicals, suggested.

KW - titania

KW - self-cleaning film

KW - photo-oxidation

KW - photooxidation

UR - http://dx.doi.org/10.1163/1568567053956644

U2 - 10.1163/1568567053956644

DO - 10.1163/1568567053956644

M3 - Article

VL - 31

SP - 295

EP - 308

JO - Research on Chemical Intermediates

T2 - Research on Chemical Intermediates

JF - Research on Chemical Intermediates

SN - 0922-6168

IS - 4-6

ER -