金纳米空球的合成及其SERS效应  

Synthesis and SERS Characterization of Gold Hollow Nanospheres

作　　者：饶贵仕[1] 王国富[1] 吴志祥[1] 易飞[1] 钟艳[1] 钟起玲[1] 任斌[2] 田中群[2] 

机构地区：[1]江西师范大学化学化工学院,南昌330022 [2]厦门大学化学系固体表面物理化学国家重点实验室,厦门361005

出　　处：《光散射学报》2008年第3期232-236,共5页The Journal of Light Scattering

基　　金：国家自然科学基金(20663002);厦门大学固体表面物理化学国家重点实验室基金(200511);江西省自然科学基金(0620025)

摘　　要：本文利用非晶硒溶胶作模板合成了金纳米空球,采用扫描电子显微镜(SEM)、X射线衍射(XRD)及拉曼光谱对其进行了表征,结果显示,所得到的金纳米空球呈多晶结构,粒径约为150 nm,壳层厚度约为25 nm,表面为颗粒状金原子团簇;将金纳米空心球组装到玻碳电极表面,以SCN-作为探针分子,初步探讨了金纳米空球的SERS效应,表明其具有较强的SERS活性。Gold hollow nanospheres were synthesized by using amorphous selenium spherical colloids as templates. These hollow nanospheres were characterized by scanning electron micro- scope （SEM）, X - ray diffraction （XRD） and Raman spectroscopy. Results showed that the hollow nanospheres were of polymorphic crystal Structure, with granular gold clusters on the surface. The diameter of these hollow nanospheres is about 150 nm, and the thickness of the shell is about 25 nm. The hollow nanospheres were assembled on a cleaned glassy carbon electrode, and the SERS activity was measured by using SCN^- as the probe molecule. It indicated that the gold hollow nanospheres exhibited a good SERS activity.

关 键 词：金 纳米空球 表面增强拉曼光谱 

分 类 号：O657.37[理学—分析化学]