FULL PAPER Water-soluble Au nanoparticles: from catalytic selective nitroarene reduction in water to refractive index sensing
نویسندگان
چکیده
Water-soluble gold nanoparticles (Au NPs) stabilized by a nitrogen-rich 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, HRTEM, ED, EDS, UV-vis, p-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 due to their localized surface plasmon resonance (LSPR) effect has also been assessed.
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