Restructural confirmation and photocatalytic applications of graphene oxide-gold composites synthesized by Langmuir-Blodgett method

Veeresh Kumar, Nupur Bahadur, Divya Sachdev, Shweta Gupta, G. B. Reddy, Renu Pasricha

Research output: Contribution to journalArticle

Abstract

We present a first report on the use of Langmuir Blodgett (LB) technique for the synthesis of edge decorated graphene oxide gold (GO-Au) nanostructures by simple manipulation of electrostatic interactions. The GO-Au nanostructures when characterized using spectroscopy, surface, chemical and micro structural techniques, displayed unique physical and structural properties. The results re-established the theoretical corroboration that the carboxyl groups are primarily located at the edges of the 2D sheets of GO. The exploitation of air-water interface platform makes this process novel and fundamentally different from existing protocols for synthesis of GO-metal composites. These GO-Au hybrid materials favoured visible-light driven plasmonic photo catalysis together with enhanced charge separation and transportation properties, resulting in the augmentation of photocatalytic activity and conductivity with high transmittance. A plausible reaction mechanism for the degradation of pollutant dye and the role of gold nanoparticles (NPs) on GO has been established.

Original languageEnglish (US)
Pages (from-to)290-304
Number of pages15
JournalCarbon
Volume80
Issue number1
DOIs
StatePublished - Jan 1 2014

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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