TY - JOUR
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
N2 - © 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.
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
SN - 1861-4728
VL - 10
SP - 2437
EP - 2443
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
IS - 11
ER -