强激光与粒子束, 2009, 21 (9): 1355, 网络出版: 2009-12-02
中空Ag纳米球壳的制备及性能表征
Preparation of hollow silver microspheres and their characterization
中空Ag球壳 改性聚苯乙烯微球 化学镀 四氢呋喃 Hollow silver microspheres Modified polystyrene spheres Chemical plating Tetrahydrofuran
摘要
以改性聚苯乙烯微球为模板,采用化学镀法在聚苯乙烯微球表面包覆一层银,在四氢呋喃溶液中将聚苯乙烯微球溶解,得到中空Ag纳米球壳。采用扫描电镜、透射电镜和X射线衍射仪对样品进行了表征及分析,并用紫外可见分光光度计研究了粒子的光学性质。实验结果表明:运用此法成功地制备出中空Ag纳米球壳的内径为250 nm,壁厚约为15 nm,并且成功地使纳米粒子的紫外吸收光谱由600 nm红移至900 nm左右,实现了在可见光至近红外光区调节Ag纳米结构的吸收峰。
Abstract
Hollow silver microspheres have been prepared by modified polystyrene microspheres as hard template.The process of preparation is as follows,a coated layer of silver on the surface of polystyrene microspheres by the chemical plating method,and the polystyrene microspheres were dissolved in tetrahydrofuran,then the hollow silver microspheres were prepared.The properties of silver microspheres were characterized by using scanning electron microscopy,transmission electron microscopy and X-ray diffraction.The optical properties of silver microspheres were studied by using UV-Vis spectrophotometer.The results indicate that silver hollow microspheres can be made by our method,the inside diameter of silver hollow microspheres is 250nm,the shell thickness is 15nm,and the absorption peak of nanoparticles can red-shift from 600nm to 900nm at the range of UV-Vis spectra.These routes realize a facile tuning of the absorption band of Ag nanostructures within the visible-near-infrared region
易早, 唐永建, 易有根, 李恺, 罗江山, 李喜波, 张建波, 叶鑫. 中空Ag纳米球壳的制备及性能表征[J]. 强激光与粒子束, 2009, 21(9): 1355. Yi Zao, Tang Yong-jian, Yi You-gen, Li Kai, Luo Jiang-shan, Li Xi-bo, Zhang Jian-bo, Ye Xin. Preparation of hollow silver microspheres and their characterization[J]. High Power Laser and Particle Beams, 2009, 21(9): 1355.