摘要
采用多孔阳极氧化铝模板(AAO)结合直流电化学沉积法,通过一种新的两步法合成一维铜(核)-镍(壳)纳米结构.首先制备铜纳米线,然后对AAO进行扩孔,利用铜纳米线和AAO孔壁之间的间隙,沉积镍纳米线/纳米管.通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对其结构和形貌进行表征分析,所得结果验证了这种方法的可行性.以腺嘌呤为探针分子研究此种纳米结构的表面增强拉曼散射(SERS)效应,结果表明,这种一维纳米材料是一种潜在的SERS活性基底,拓宽了过渡金属在SERS中的应用.
A copper（core）-nickel（shell） nanostructure was synthesized by porous anodic aluminum oxide template （AAO） combined with electrochemical deposition according to a new two-step method, i.e., the copper nanowire core was prepared first and then the AAO pore was widened and followed by the growth of the nickel shell in the interspace between the wall of the pore and the copper nanowire. The structure and morphology were characterized and analyzed using X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and transmission election microscopy （TEM）. The results verified that this method for the fabrication of the core-shell structure was effective. Adenine was used as a probe molecule to investigate the surface-enhanced Raman scattering （SERS） effect of this type of core-shell nanowire and the results revealed that the controllable one-dimensional core-shell nanomaterial is a potential SERS active substrate, which may exploit the use of transition metals for SERS.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2009年第7期1337-1341,共5页
Acta Physico-Chimica Sinica
基金
国家自然科学基金(50602040)
教育部留学回国人员科研启动基金
河南省重大科技攻关项目(082101510007)资助~~
关键词
多孔阳极氧化铝模板
电化学沉积
扩孔
核壳纳米结构
表面增强拉曼光谱
Porous anodic aluminum oxide template
Electrochemical deposition
Pore widening
Core-shell nanostructure
Surface-enhanced Raman spectrum
