Enhanced photocatalytic activity of C, F-codoped TiO2 loaded with AgCl

Hongjian Yan, Saji Thomas Kochuveedu, Li Na Quan, Sang-Soo Lee, Dong Ha Kim

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47 Citations (Scopus)

Abstract

A protocol is reported for the development of a unique type of a co-doped TiO2 with two kinds of non-metal atoms, carbon (C) and fluorine (F), as a visible-light active photocatalyst system. C, F-codoped TiO2 nanoobjects with anatase phase were synthesized by calcination of a mixture of TiOF2 and sulfuric-acid-treated melamine. The C, F co-doping resulted in a red-shift of the absorption edge to 510 nm from the 390-nm value obtained for a control TiO2 photocatalyst. The C, F-codoped TiO2 shows photocatalytic activity under visible light irradiation. Furthermore, the loading of AgCl into the parent co-doped TiO2 enhanced its activity for degradation of methylene blue dye by about 3.5 times in the first hour irradiation. A brief mechanism responsible for the enhancement is proposed in terms of the transfer of holes from C, F-codoped TiO2 to the AgCl phase.

Original languageEnglish
Pages (from-to)20-26
Number of pages7
JournalJournal of Alloys and Compounds
Volume560
DOIs
Publication statusPublished - 2013 May 25

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Keywords

  • AgCl
  • C, F-doping
  • Co-doped TiO
  • Photocatalysis
  • Visible light activity

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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