A facile method is proposed for the synthesis of reduced graphene oxide nanosheets (RGONS) and Au nanoparticle-reduced graphene oxide nanosheet (Au-RGONS) hybrid materials, using graphene oxide (GO) as precursor and sodium citrate as reductant and stabilizer. The resulting RGONS and Au-RGONS hybrid materials were characterized by UV-vis spectroscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, atomic force microscopy, transmission electron microscopy, and X-ray diffraction. It was found that the RGONS and Au-RGONS hybrid materials formed stable colloidal dispersions through hydrogen bonds between the residual oxygen-containing functionalities on the surface of RGONS and the hydroxyl/carboxyl groups of sodium citrate. The electrochemical responses of RGONS and Au-RGONS hybrid material-modified glassy carbon electrodes (GCE) to three kinds of biomolecules were investigated, and all of them showed a remarkable increase in electrochemical performance relative to a bare GCE. © 2011 Tsinghua University Press and Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Zhang, Z., Chen, H., Xing, C., Guo, M., Xu, F., Wang, X., … Tang, J. (2011). Sodium citrate: A universal reducing agent for reduction / decoration of graphene oxide with au nanoparticles. Nano Research, 4(6), 599–611. https://doi.org/10.1007/s12274-011-0116-y
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