摘要
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.
一个灵巧的方法为减少的 graphene 氧化物 nanosheets (RGONS ) 的合成被建议，使用 graphene 氧化物并且 Au 减少 nanoparticle 的 graphene 氧化物 nanosheet (Au-RGONS ) 混血儿材料(去) 作为先锋和钠柠檬酸盐作为 reductant 和 stabilizer。产生 RGONS 和 Au-RGONS 混血儿材料被紫外力的光谱学描绘， X 光检查光电子光谱学， Fourier 变换红外线的光谱学，拉曼光谱学，原子力量显微镜学，传播电子显微镜学，和 X 光检查衍射。RGONS 和 Au-RGONS 混血儿材料通过在剩余之间的氢契约形成了稳定的胶体的分散，这被发现 RGONS 的表面和钠柠檬酸盐的 hydroxyl/carboxyl 组上的包含氧的功能。到三种 biomolecules 的 RGONS 和 Au-RGONS 混合的修改材料的玻璃质的碳电极(GCE ) 的电气化学的回答被调查，并且所有相对赤裸的 GCE 在电气化学的性能他们显示出显著增加。
