会议专题

电化学调控生成枝晶银纳米结构

we report an the electrochemical controllable growth of the shape and the orientation of crystallites of the Ag dendritic nanostructures without any template,surfactant directed. It can be observed that silver dendrites were obtained in a large quantity and good uniformity by a simple electrochemical route. In thesilver dendrites,the diameter of the trunk is around 100 nm with its length up to 16 μm,the length of thebranch can reach 3 μm. And the crystal structures for the truck and branches in the silver dendriteswere characterized by selected area electron diffraction(SAED). Furthermore,we also investigatedthe effects of the growth conditions art the morphology of silver dendrites,especially the growth tendency ofAg dendrites at different controlled temperature. The results show that experimental temperature play an important role in the formation of Ag dendrites hierarchical struatrue during the electradeposition process,Thetemperature range of 25-26 ℃ is suitable for the formation of silver dendrites. This may be due to the fastgrowth of silver Ag dendrites was affected by ions diffusion speed in the electrolyte. In addition,we alsoinitially irtvestigsted the interesting hierarchical structure of the Ag dendrites used as SERS substrates.

枝晶银 纳米结构 电化学调控 合成工艺

徐春菊 贾能勤

上海师范大学生命与环境科学学院化学系,上海 200234

国内会议

第十四次全国电化学会议

扬州

中文

449-450

2007-11-02(万方平台首次上网日期,不代表论文的发表时间)