Soft-chemical synthesis of nanometer-thick carbon-coated titania: Effect of carbon-coating on the photocatalytic activity of TiO 2

Ah Reum Han, Seong Ju Hwang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Nanometer-thick carbon layer can be successfully coated on titanium oxide via a novel soft-chemical route involving a dehydration process of adsorbed carbohydrate molecules assisted by sulfuric acid. According to powder X-ray diffraction and Ti K-edge X-ray absorption spectroscopic analysis, carbon-coating leads to no significant modification in the anatase-type atomic arrangement of titanium oxide. Transmission electron microscopy, elemental CHNS analysis, and micro-Raman spectroscopy clearly demonstrated that disordered graphitic carbon layer is uniformly coated on the surface of titanium oxide. Of special importance is that the carbon-coating can improve an ability of titanium oxide to remove organic pollutant. On the basis of the experimental findings, we are able to conclude that the present low temperature dehydration method provides a less energyconsuming route not only to the carbon-coating of titanium oxide but also to the improvement of the photocatalytic activity of semiconducting metal oxide.

Original languageEnglish
Pages (from-to)5494-5498
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number10
DOIs
Publication statusPublished - 2008 Oct 1

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Cite this