Preparation of surface-modified TiO2 nanoflower film as efficient visible-active photocatalysts

  • Ya Hui Wu
  • , Ming Ce Long
  • , Chao Chen
  • , Wei Min Cai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

The TiO2 films were synthesized on Ti substrates by a novel method. Titanium metal was directly oxidized by hydrogen peroxide to generate a rough amorphous film and then hydrothermal process transformed the film to crystalline nanoflower TiO2 film. The obtained film can be modified by calcination with urea and the modified film can keep the nanoflower structure. According to the XPS data, the urea-induced modification is surface-modification rather than N-doping. Compared to the un-modified film, the response scope of the modified film extends to the visible light region. Photocatalytic activity of films were investigated by degrading methyl orange (MO) under visible light. As a result, 47% of MO was decomposed by modified film in 3 hours.

Original languageEnglish
Title of host publicationAdvances in Key Engineering Materials
Pages406-411
Number of pages6
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 International Conference on Key Engineering Materials, ICKEM 2011 - Sanya, China
Duration: 25 Mar 201127 Mar 2011

Publication series

NameAdvanced Materials Research
Volume214
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Key Engineering Materials, ICKEM 2011
Country/TerritoryChina
CitySanya
Period25/03/1127/03/11

Keywords

  • Hydrogen peroxide
  • Nanoflower
  • Titania
  • Titanium
  • Urea
  • Visible-active photocatalysts

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