摘要
采用晶种生长法通过改变晶种对生长溶液的体积比例、引入离子合成了棒状和星形金纳米颗粒。首先用NaBH4作为还原剂制得小粒径球形金纳米颗粒作为晶种溶液,生长溶液中引入AgNO3为辅助试剂、溴化十六烷三甲基铵(CTAB)为表面活性剂来引导合成形貌不同的颗粒。对制备的球状、棒状和星状金纳米颗粒进行了紫外—可见光谱测试和表面增强拉曼散射效应测试(SERS),结果表明在这三种不同形貌颗粒中星状金纳米颗粒的SERS效应最强。
By changing the volume ratio between seeds and growth solution and by introducing additional ions with seed-mediated growth method,rod and star-shaped gold nanoparticles were synthesized.First,the nanosphere particles colloid was working as the seed solution,and NaBH4 was introduced as reducing agent.Additional AgNO3 was also introduced as assistant reagent and CTAB as surfactant in growth solution.Different nanoparticles with different shapes were prepared using this method and characterized by UV-vis spectral and surface enhance Raman scattering.The results indicate that,star-shaped gold nanoparticles have the strongest SERS effect.
出处
《传感技术学报》
CAS
CSCD
北大核心
2011年第1期14-17,共4页
Chinese Journal of Sensors and Actuators
基金
山西省留学基金项目资助(66)
