In situ production of high purity noble metal nanoparticles on fumed silica and catalytic activity towards 2-nitrophenol reduction

Alina V. Korobeinyk, Raymond Whitby, Sergey Mikhalovsky, Vasileios Inglezakis

Research output: Contribution to journalArticle

Abstract

In-situ synthesis of chemically pure noble metal (Au, Pt, Pd, Ru) nanoparticles was performed via redox reaction under ambient conditions from aqueous noble metal salt solutions on non-porous fumed silica. Nanoparticles of average sizes <5 and up to 19 nm were obtained. The nanostructured fumed silica with surface modified by triethoxysilane has been proven an effective support for noble metal nanoparticles synthesis. The silicon-hydride groups on the silica surface not only directly reduce noble metal ions from solution, but they also stabilize metal nanoparticles by bonding with the solid matrix. The nanocomposites were studied for the reduction of 2-nitrophenol showing very high activity at room temperature following the order Pd > Au > Ru > Pt.

Original languageEnglish
Pages (from-to)28-34
Number of pages7
JournalJournal of Physics and Chemistry of Solids
Volume127
DOIs
Publication statusPublished - Apr 1 2019

Fingerprint

Metal nanoparticles
Precious metals
noble metals
Silicon Dioxide
catalytic activity
Catalyst activity
purity
Silica
Nanoparticles
silicon dioxide
nanoparticles
Redox reactions
Salts
salts
synthesis
2-nitrophenol
Nitrophenols

Keywords

  • 2-nitrophenol
  • Fumed silica
  • Nanoparticles
  • Noble metal
  • Redox
  • Silicon-hydride

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

In situ production of high purity noble metal nanoparticles on fumed silica and catalytic activity towards 2-nitrophenol reduction. / Korobeinyk, Alina V.; Whitby, Raymond; Mikhalovsky, Sergey; Inglezakis, Vasileios.

In: Journal of Physics and Chemistry of Solids, Vol. 127, 01.04.2019, p. 28-34.

Research output: Contribution to journalArticle

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