Synthesis and Characterization of Metal Nanoparticles with Controllable Size and Shape

Abstract

金属纳米粒子的特殊性质和潜在应用与它的尺寸和形状密切相关,迄今人们已发展了许多金属纳米粒子的制备方法,但绝大多数方法的产物皆是球形纳米粒子,如何建立可对目标材料进行人为的尺寸和形状调控的简易方法是一个极具挑战的课题。 本论文工作的目标是设计一种简单有效的水相合成方法,制备出尺寸和形状可控的金和银纳米粒子。在作为包裹剂的十二烷基磺酸钠(SDSN)存在下,用柠檬酸钠(Na3C6H5O7)分别还原硝酸银(AgNO3)或氯金酸(HAuCl4)。它最鲜明的特点在于不需要任何模板和种子诱导,仅通过控制还原剂的浓度就可以实现对纳米粒子的尺寸和形状控制,而包裹剂的主要作用是防止粒子聚集和得到更好晶型结构。使...The unique properties and potential applications of metal nanoparticles are mainly determined by the size and shape. So far there have been many methods to prepare metal nanostructures, but spherical nanoparticles are usually the major products. It is therefore a great challenge to develop some simple and effect methods of synthesizing nanoparticles whose size and shape can be controlled at will. ...学位:理学博士院系专业:化学化工学院化学系_物理化学(含化学物理)学号:B20002502

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