摘要
通过水热合成法制备了单分散碳微球,并以此单分散碳微球为核,利用其表面修饰的银纳米粒子作为种子,进一步还原制备了以碳微球为核、以金为壳的金纳米壳(Nanoshell)球体.通过透射电子显微镜和紫外可见吸收光谱对其形态以及光谱性质进行了表征.研究结果表明,采用该种方法制备出来的碳微球具有良好的单分散性,表面修饰简便快捷,利用碳微球为核制备的金纳米壳球体尺寸可控,在近红外范围内有强吸收.实验结果证明该方法是制备金纳米壳球体的一种有效新方法.
This article reported a new method to synthesize lectric core. The carbon nanoparticles were prepared Au nanoshell via carbon nanoparticle as the diethrough hydrothermal reaction of glucose and Au seeds This carbon nanoparticles inherit reactive surfaces which facilitate the loading of Ag nanoparticles, then the Ag nanoparticles act as the seeds for further reduction of chloroaurie acid in the presence of cetyltrimethyl ammonium bromide （CTAB） and ascorbie acid to form a complete Au nanoshell on the surface of carbon nanoparticles（ carbon nanoparticle as the core and Au layer as the shell）. Successful forming of complete Au nanoshell was approved by transmission electron microscopy （TEM） and UV-Vis absorption spectra. The Au nanoshell shows a strong absorption in the range of near-infrared （NIR）. The experimental results indicate that this method is a facile and effective way for the synthesis of Au nanoshell with NIR absorption properties.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第6期1090-1094,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20728404,20674009,50525310)
教育部培育基金(批准号:707023)
上海市重点学科建设项目(批准号:B113)资助
关键词
碳微球
金纳米壳球体
核壳结构
近红外吸收
Carbon nanoparticles
Au nanoshell
Core-shell structure
Near-infrared absorption
