Excellent photocatalytic activity of titania–graphene nanocomposites prepared by a facile route

Anila Gopalakrishnan, Narayanan N. Binitha, Zahira Yaakob, P. Mohammed Akbar, Silija Padikkaparambil

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Abstract: Herein, we have presented a facile route for the in situ preparation of titania–graphene nanocomposites having excellent photocatalytic activity. Titania sol is incorporated into graphene oxide sheets, and the resultant mixture is solvothermally treated to attain titania-reduced graphene oxide composites without the use of any additional reducing agents. The well alignment of the anatase titania nanoparticles over individual graphene layers was confirmed using various characterization techniques, such as X-ray diffraction, atomic force microscopy, field emission scanning electron microscopy and transmission electron microscopy. The photocatalysts showed complete degradation of methyl orange within short duration of UV irradiation. The best catalyst, with TiO2 nanoparticles dispersed over 2 wt% graphene sheets, showed remarkable reusability where the activity remained unaffected till four repeated cycles. The facile method of preparation, graphene oxide reduction without the aid of any reducing agent, excellent photodegradation of methyl orange within short duration and reusability of the catalyst are the foremost attractions of present photocatalysts. Graphical Abstract: Facile fabrication of titania–graphene nanocomposites, for the photocatalytic degradation of methyl orange dye, is achieved under mild conditions. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalJournal of Sol-Gel Science and Technology
DOIs
Publication statusAccepted/In press - 12 May 2016

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Graphene
Nanocomposites
nanocomposites
graphene
routes
Oxides
Titanium
Reducing Agents
Reusability
Reducing agents
Photocatalysts
oxides
titanium
degradation
Nanoparticles
Titania
catalysts
Degradation
nanoparticles

Keywords

  • Pollutant degradation
  • Solvothermal treatment
  • Titania–graphene nanocomposites

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Biomaterials
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

Excellent photocatalytic activity of titania–graphene nanocomposites prepared by a facile route. / Gopalakrishnan, Anila; Binitha, Narayanan N.; Yaakob, Zahira; Akbar, P. Mohammed; Padikkaparambil, Silija.

In: Journal of Sol-Gel Science and Technology, 12.05.2016, p. 1-12.

Research output: Contribution to journalArticle

Gopalakrishnan, Anila ; Binitha, Narayanan N. ; Yaakob, Zahira ; Akbar, P. Mohammed ; Padikkaparambil, Silija. / Excellent photocatalytic activity of titania–graphene nanocomposites prepared by a facile route. In: Journal of Sol-Gel Science and Technology. 2016 ; pp. 1-12.
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