类球形和树枝状纳米银的超声电化学制备  

Preparation of Like-spheres and Dendrites Silver Nanoparticles by Sonoelectrochemical Method

作　　者：廖学红[1] 朱俊杰[1] 邱晓峰[1] 赵小宁[2] 陈洪渊[1] 

机构地区：[1]南京大学化学系,配位化学国家重点实验室和介观材料科学实验室,南京210093 [2]南京大学现代分析中心,南京210093

出　　处：《南京大学学报（自然科学版）》2002年第1期119-123,共5页Journal of Nanjing University（Natural Science）

基　　金：国家自然科学基金 (No .5 0 0 72 0 0 6 ;No .2 9835 110 );江苏省高技术项目 (BG2 0 0 10 39)

摘　　要：在配位剂EDTA存在下 ,用AgNO3溶液以超声电化学方法成功地制备出两种不同粒径的类球形和树枝状的纳米银 ,并用X射线衍射 (XRD)和透射电子显微镜 (TEM )对该纳米银进行表征 ;Shaped silver nanoparticles with like-spheres and dendrites have been prepared by sonoelectrochemical method from an aqueous solution of AgNO 3 in the presence of ethylenediaminetetraacetic acid disodium salt (EDTA). The silver nanoparticles are characterized by using powder X-ray diffraction (XRD) and transmission electron microscope (TEM). A typical XRD pattern of the as-prepared silver nanoparticles shows the presence of the diffraction peaks corresponds to the (111), (200), (220), (311) planes. All the peaks in the XRD pattern can be indexed as a fcc structure (JCPDS, No.4-0783). The effects of electrolysis on particle shapes are also discussed. It is found that the concentration of AgNO 3 and EDTA affects greatly the shape of the nanoparticles.

关 键 词：类球形 树枝状 纳米银 超声电化学制备 表征 纳米粒子 可调因素 

分 类 号：TB383[一般工业技术—材料科学与工程] O614.122[理学—无机化学]