Novel low-temperature photocatalytic titania films produced by plasma-assisted reactive dc magnetron sputtering

Andrew Mills, J.S. Wang, M. Crow, G. Taglioni, L. Novella

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Robust, active, anatase titania films, 250 nm thick, are deposited onto glass at low temperatures, i.e., 2.0 for the photocatalytic mineralization of stearic acid. These films are typically 6.9 times more active than a sample of commercial self-cleaning glass, comprising a 15 nm layer of fitania deposited by CVD, mainly because they are much thicker and, therefore, absorb more of the incident UV light. The most active of the films tested comprised particles of P25, but lacked any significant physical robustness. Similar results, but much more quickly obtained, were generated using a photocatalyst- sensitive ink, based on the redox dye, resazurin, Rz. All fitania films tested, including those produced by magnetrom sputtering exhibited photo-induced superhydrophilicity. The possible future application of PAR-DG-MS for producing very active photocatalytic films on substrates not renowned for their high temperature stabilities, such as plastics, is noted. (c) 2006 Elsevier B.V All rights reserved.
Original languageEnglish
Pages (from-to)370-376
Number of pages7
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume187
Issue number2-3
DOIs
Publication statusPublished - 15 Apr 2007

ASJC Scopus subject areas

  • Bioengineering
  • Physical and Theoretical Chemistry

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