Liu Yuge, Feng Xiaomiao, Shen Jianmin, Zhu Jun-Jie, Hou Wenhua
School of Chemistry and Chemical Engineering, Key Laboratory of Analytical Chemistry for Life Science (MOE), Nanjing University, Nanjing 210093, China.
J Phys Chem B. 2008 Jul 31;112(30):9237-42. doi: 10.1021/jp801938w. Epub 2008 Jul 4.
A novel nanocomposite with a core-shell structure containing polystyrene (PS), polyaniline (PANI), and Au nanoparticles (NPs) was synthesized. The nanocomposite was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR). Cyclic voltammetric experiments indicated that the nanocomposite had excellent redox ability in a wide range of pH values. The existence of Au NPs resulted in a higher electrical conductivity of the nanocomposite. As a model, glucose oxidase (GOD) was entrapped onto the nanocomposite-modified glassy carbon electrode (GCE) and applied to construct a sensor. The immobilized GOD showed a pair of well-defined redox peaks and high catalytic activity for the oxidation of glucose.
合成了一种具有核壳结构的新型纳米复合材料，其包含聚苯乙烯（PS）、聚苯胺（PANI）和金纳米颗粒（NPs）。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）和傅里叶变换红外光谱（FTIR）对该纳米复合材料进行了表征。循环伏安实验表明，该纳米复合材料在很宽的pH值范围内具有优异的氧化还原能力。金纳米颗粒的存在导致纳米复合材料具有更高的电导率。作为模型，将葡萄糖氧化酶（GOD）固定在纳米复合材料修饰的玻碳电极（GCE）上，并应用于构建传感器。固定化的GOD显示出一对明确的氧化还原峰，并且对葡萄糖氧化具有高催化活性。
