Photoreduction of Graphene Oxide and Photochemical Synthesis of Graphene-Metal Nanoparticle Hybrids by Ketyl Radicals

Joey Dacula Mangadlao, Pengfei Cao, Diana Choi, Rigoberto C. Advincula

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The photoreduction of graphene oxide (GO) using ketyl radicals is demonstrated for the first time. The use of photochemical reduction through ketyl radicals generated by I-2959 or (1-[4-(2-hydroxyethoxy)phenyl]-2-hydroxy-2-methyl-1-propan-1-one) is interesting because it affords spatial and temporal control of the reduction process. Graphene-metal nanoparticle hybrids of Ag, Au, and Pd were also photochemically fabricated in a one-pot procedure. Comprehensive spectroscopic and imaging techniques were carried out to fully characterize the materials. The nanoparticle hybrids showed promising action for the catalytic degradation of model environmental pollutants, namely, 4-nitrophenol, Rose Bengal, and Methyl Orange. The process described can be extended to polymer nanocomposites that can be photopatterned and could be potentially extended to fabricating plastic electronic devices.

Original languageEnglish
Pages (from-to)24887-24898
Number of pages12
JournalACS Applied Materials and Interfaces
Volume9
Issue number29
DOIs
Publication statusPublished - 2017 Jul 26
Externally publishedYes

Keywords

  • environmental pollutants
  • graphene oxide
  • ketyl radicals
  • metal nanoparticles
  • photochemical synthesis
  • photopatterning

ASJC Scopus subject areas

  • Materials Science(all)

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