中文摘要：

采用电化学沉积法,以柠檬酸钠为配位剂和稳定剂,在FTO导电玻璃上成功合成树枝状,球状和树叶状纳米银。利用冷场发射扫描电镜,X射线衍射仪和能谱仪对纳米银进行分析和表征。研究了柠檬酸钠和沉积电压对纳米银形貌和尺寸的影响。以罗丹明B为探针,进一步研究了不同形状纳米银的表面增强拉曼效应。实验结果表明,当沉积电压为0.5 V,柠檬酸钠浓度为0.001 mol/L,沉积时间为1800 s合成的树叶状纳米银具有良好的SERS效应,可探测罗丹明B分子的特征结构。该合成方法简单,方便,快速,合成的银纳米基底有望用于环境监测和材料结构分析等领域。

英文摘要：

Dendritic,spherical and leaf-shaped Ag nanoparticles were prepared successful on the surface of FTO conductive glass using sodium citrate as a complexing agent and a stabilizer by electrochemical deposition method. The prepared nano-silver were analyzed and measured using cold field emission scanning electron microscopy,X-ray diffractometer and energy dispersive spectroscopy. The effect of sodium citrate and deposition voltage on the morphology and size of nano-silver were studied. The relationship between different nano-silver shapes and surface enhanced raman scattering was further studied by Rhodamine B as a probe. The result shows that leaf-like nano-silver has good SERS effect when the deposition voltage is 0. 5 V; the concentration of sodium citrate is 0. 001 mol /L,and deposition time is 1800 s. That substrate can be used to detect the structure of Rhodamine B. The synthesis method is simple,convenient and fast to synthesis nano-silver substrate which is expected to be used for environmental monitoring and structural analysis.