Water-Soluble Gold Nanoparticles: From Catalytic Selective Nitroarene Reduction in Water to Refractive Index Sensing

Wusheng Guo; Roser Pleixats; Alexandr Shafir

doi:10.1002/asia.201500290

Water-Soluble Gold Nanoparticles: From Catalytic Selective Nitroarene Reduction in Water to Refractive Index Sensing

Wusheng Guo, Roser Pleixats, Alexandr Shafir

Department of Chemistry

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

21 Citations (Scopus)

Abstract

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Water-soluble gold nanoparticles (Au NPs) stabilized by a nitrogen-rich poly(ethylene glycol) (PEG)-tagged substrate have been prepared by reduction of HAuCl4 with NaBH4 in water at room temperature. The morphology and size of the nanoparticles can be controlled by simply varying the gold/stabilizer ratio. The nanoparticles have been fully characterized by TEM, high-resolution (HR) TEM, electron diffraction (ED), energy-dispersive X-ray spectroscopy (EDS), UV/Vis, powder XRD, and elemental analysis. The material is efficient as a recyclable catalyst for the selective reduction of nitroarenes with NaBH4 to yield the corresponding anilines in water at room temperature. Furthermore, the potential ability of the Au NPs as a refractive index sensor owing to their localized surface plasmon resonance (LSPR) effect has also been assessed.

Original language	English
Pages (from-to)	2437-2443
Journal	Chemistry - An Asian Journal
Volume	10
Issue number	11
DOIs	https://doi.org/10.1002/asia.201500290
Publication status	Published - 1 Nov 2015

Keywords

arenes
gold
nanoparticles
reduction
sensors

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10.1002/asia.201500290

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title = "Water-Soluble Gold Nanoparticles: From Catalytic Selective Nitroarene Reduction in Water to Refractive Index Sensing",

abstract = "{\textcopyright} 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Water-soluble gold nanoparticles (Au NPs) stabilized by a nitrogen-rich poly(ethylene glycol) (PEG)-tagged substrate have been prepared by reduction of HAuCl4 with NaBH4 in water at room temperature. The morphology and size of the nanoparticles can be controlled by simply varying the gold/stabilizer ratio. The nanoparticles have been fully characterized by TEM, high-resolution (HR) TEM, electron diffraction (ED), energy-dispersive X-ray spectroscopy (EDS), UV/Vis, powder XRD, and elemental analysis. The material is efficient as a recyclable catalyst for the selective reduction of nitroarenes with NaBH4 to yield the corresponding anilines in water at room temperature. Furthermore, the potential ability of the Au NPs as a refractive index sensor owing to their localized surface plasmon resonance (LSPR) effect has also been assessed.",

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T1 - Water-Soluble Gold Nanoparticles: From Catalytic Selective Nitroarene Reduction in Water to Refractive Index Sensing

AU - Guo, Wusheng

AU - Pleixats, Roser

AU - Shafir, Alexandr

PY - 2015/11/1

Y1 - 2015/11/1

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AB - © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Water-soluble gold nanoparticles (Au NPs) stabilized by a nitrogen-rich poly(ethylene glycol) (PEG)-tagged substrate have been prepared by reduction of HAuCl4 with NaBH4 in water at room temperature. The morphology and size of the nanoparticles can be controlled by simply varying the gold/stabilizer ratio. The nanoparticles have been fully characterized by TEM, high-resolution (HR) TEM, electron diffraction (ED), energy-dispersive X-ray spectroscopy (EDS), UV/Vis, powder XRD, and elemental analysis. The material is efficient as a recyclable catalyst for the selective reduction of nitroarenes with NaBH4 to yield the corresponding anilines in water at room temperature. Furthermore, the potential ability of the Au NPs as a refractive index sensor owing to their localized surface plasmon resonance (LSPR) effect has also been assessed.

KW - arenes

KW - gold

KW - nanoparticles

KW - reduction

KW - sensors

U2 - 10.1002/asia.201500290

DO - 10.1002/asia.201500290

M3 - Article

VL - 10

SP - 2437

EP - 2443

IS - 11

ER -

Water-Soluble Gold Nanoparticles: From Catalytic Selective Nitroarene Reduction in Water to Refractive Index Sensing

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Keywords

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