摘要
在正交试验基础上,采用化学还原法可控制备微米级银球.实验结果表明:0.08 mol硝酸银,0.035 mol抗坏血酸,0.5×10-3mol柠檬酸,1.35 g聚乙烯吡咯烷酮和80 ml蒸馏水等合成条件下,可制备粒径约为1.94μm的银球.利用X射线衍射仪和扫描电镜等现代化测试仪器对所制备的微米银球进行了结构表征.以对巯基苯甲酸为探针分子,拉曼检测结果显示所制备的微米银球具有高的SERS活性.此项研究为构建基于SERS技术的高灵敏度传感器奠定了基础.
The size-controlled preparation of silver microparticles can be synthesized by chemical reduction method on the basis of orthogonal. The results showed silver particles about 1.94 micros can be synthesized by hydrothermal with 0. 008 molar AgNO3,0. 035 molar ascorbie acid, 0.5 ×10^-3molar citric acid, 1.35 g polyvinylpyrrolidone and 80mL deionized water, mercaptobenzoie acid is used as a probe molecule. The results of Raman spectrum indicated the prepared silver particles possess high SERS activity. The findings establish the foundation for building high-sensitivity sensors based on SERS technology.
出处
《吉林师范大学学报（自然科学版）》
2013年第2期11-14,共4页
Journal of Jilin Normal University:Natural Science Edition
基金
国家自然科学基金项目(21176052)
