Qiu Jian-Ding, Peng Hong-Zhen, Liang Ru-Ping, Li Jian, Xia Xing-Hua
Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
Langmuir. 2007 Feb 13;23(4):2133-7. doi: 10.1021/la062788q.
Au nanoparticles modified with electroactive Prussian blue (PB) were for the first time synthesized by a simple chemical method. Transmission electronic microscopy showed that the average size of the Prussian blue shell/Au core hybrid composite (PB@Au) was about 50 nm, and Fourier transform IR, UV-vis spectra, and cyclic voltammetry confirmed the existence of PB on the surface of Au nanoparticles. Using the LbL technique, multilayer thin films of PB@Au nanoparticles were prepared by the alternate adsorption of oppositely charged linear polyelectrolyte poly(allylamine hydrochloride) (PAH) onto ITO glass for the construction of a hydrogen peroxide sensor. The novel multilayer films were characterized by SEM, cyclic voltammetry, and UV-visible absorption spectroscopy. The {PAH/PB@Au}n multilayer-modified electrode showed a well-defined pair of redox peaks and dramatic catalytic activity toward the reduction of hydrogen peroxide.
通过一种简单的化学方法首次合成了用具有电活性的普鲁士蓝（PB）修饰的金纳米颗粒。透射电子显微镜显示，普鲁士蓝壳/金核杂化复合材料（PB@Au）的平均尺寸约为50纳米，傅里叶变换红外光谱、紫外可见光谱和循环伏安法证实了金纳米颗粒表面存在PB。利用层层自组装技术，通过将带相反电荷的线性聚电解质聚（烯丙胺盐酸盐）（PAH）交替吸附到ITO玻璃上，制备了PB@Au纳米颗粒的多层薄膜，用于构建过氧化氢传感器。通过扫描电子显微镜、循环伏安法和紫外可见吸收光谱对新型多层薄膜进行了表征。{PAH/PB@Au}n多层修饰电极显示出一对明确的氧化还原峰，并且对过氧化氢的还原具有显著的催化活性。
