Visible-light induced reduction of graphene oxide using plasmonic nanoparticle

Dinesh Kumar, Ah Reum Lee, Sandeep Kaur, Dong Kwon Lim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Present work demonstrates the simple, chemical free, fast, and energy efficient method to produce reduced graphene oxide (r-GO) solution at RT using visible light irradiation with plasmonic nanoparticles. The plasmonic nanoparticle is used to improve the reduction efficiency of GO. It only takes 30 min at RT by illuminating the solutions with Xe-lamp, the r-GO solutions can be obtained by completely removing gold nanoparticles through simple centrifugation step. The spherical gold nanoparticles (AuNPs) as compared to the other nanostructures is the most suitable plasmonic nanostructure for r-GO preparation. The reduced graphene oxide prepared using visible light and AuNPs was equally qualitative as chemically reduced graphene oxide, which was supported by various analytical techniques such as UV-Vis spectroscopy, Raman spectroscopy, powder XRD and XPS. The reduced graphene oxide prepared with visible light shows excellent quenching properties over the fluorescent molecules modified on ssDNA and excellent fluorescence recovery for target DNA detection. The r-GO prepared by recycled AuNPs is found to be of same quality with that of chemically reduced r-GO. The use of visible light with plasmonic nanoparticle demonstrates the good alternative method for r-GO synthesis.

Original languageEnglish
Article numbere53108
JournalJournal of Visualized Experiments
Issue number103
Publication statusPublished - 2015 Sept 22


  • DNA detection
  • Engineering
  • Fluorescence quenching
  • Issue 103
  • Plasmonic nanoparticles
  • Reduced graphene oxide
  • Visible light irradiation

ASJC Scopus subject areas

  • Neuroscience(all)
  • Chemical Engineering(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)


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