有序银纳米壳阵列的可控制备及其SERS性能

Controlled preparation of ordered silver nanoshell material and its SERS performance research

采用金种子原位生长法,以SiO_(2)胶体晶体为模板,甲醛为还原剂,还原银氨溶液可控制备了有序银纳米壳阵列,并研究其生长过程中表面增强拉曼光谱(SERS)性能。通过改变反应液物量和生长次数对材料进行可控制备,并探讨了其SERS性能的改变。结果显示将四块组装有SiO_(2)/GNPs阵列的载玻片放入包含200 mL浓度为1.2 mmol/L的硝酸银、4 mL氨水和4 mL甲醛的反应液中生长四次制得的有序银纳米壳阵列的SERS活性最佳。

Preparation of ordered silver nanoshell arrays by in situ growth method,using SiO_(2) colloidal crystal as template,formaldehyde as reducing agent,can control the preparation of ordered silver nano-array,and study the performance of surface enhanced Raman spectroscopy(SERS)during its growth.The material can be controlled and prepared by controlling the amount of reaction liquid and controlling the number of reaction growth,and the change of its SERS performance is discussed.The results showed that the best SERS properties of ordered silver nanomaterials,which were prepared four ordered SiO_(2)/GNPs arrays grew four times in 200 mL reaction solution containing 1.2 mmol/L silver nitrate,4 mL ammonia and 4 mL formaldehyde.