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

Alina V. Korobeinyk; Raymond D.L. Whitby; Sergey V. Mikhalovsky; Vassilis J. Inglezakis

doi:10.1016/j.jpcs.2018.12.001

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

Alina V. Korobeinyk, Raymond D.L. Whitby, Sergey V. Mikhalovsky, Vassilis J. Inglezakis

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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 language	English
Pages (from-to)	28-34
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	127
DOIs	https://doi.org/10.1016/j.jpcs.2018.12.001
Publication status	Published - Apr 2019

Keywords

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

ASJC Scopus subject areas

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

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

In: Journal of Physics and Chemistry of Solids, Vol. 127, 04.2019, p. 28-34.

Research output: Contribution to journal › Article › peer-review

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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.",

keywords = "2-nitrophenol, Fumed silica, Nanoparticles, Noble metal, Redox, Silicon-hydride",

author = "Korobeinyk, {Alina V.} and Whitby, {Raymond D.L.} and Mikhalovsky, {Sergey V.} and Inglezakis, {Vassilis J.}",

note = "Funding Information: The authors express their gratitude to Dr Alex Jass, Serikbayev Ust{\textquoteright} Kamenogorsk State University, Kazakhstan, for the TEM measurements and analysis. This work has been financially supported by Nazarbayev University project ORAU “HyperActiv” SOE 2015 009 , the European Commission project Horizon 2020 MSCA-RISE-2016 “NanoMed” and the Royal Academy of Engineering (UK) projects IAPP/1516/46 and IAPP/1516/3 .",

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AU - Inglezakis, Vassilis J.

N1 - Funding Information: The authors express their gratitude to Dr Alex Jass, Serikbayev Ust’ Kamenogorsk State University, Kazakhstan, for the TEM measurements and analysis. This work has been financially supported by Nazarbayev University project ORAU “HyperActiv” SOE 2015 009 , the European Commission project Horizon 2020 MSCA-RISE-2016 “NanoMed” and the Royal Academy of Engineering (UK) projects IAPP/1516/46 and IAPP/1516/3 .

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