镓纳米团簇的超声制备与形态调控研究  

Preparation of Gallium Nanoclusters and Regulation of Their Morphological Properties by Ultrasonic Treatment

作　　者：邓王红 赵芷弘 陈凯旋 陈杰 詹高成 刘敏[1] DENG Wanghong;ZHAO Zhihong;CHEN Kaixuan;CHEN Jie;ZHAN Gaocheng;LIU Min(College of Science,China Three Gorges University,Yichang 443002,Hubei,China)

机构地区：[1]三峡大学理学院,湖北宜昌443002

出　　处：《材料导报》2024年第18期131-135,共5页Materials Reports

基　　金：国家自然科学基金(51501102)。

摘　　要：纳米团簇具有独特的理化性质,在催化、传感和生物医学等领域前景广阔,受到相关研究人员的广泛关注。目前,尚未有关于超声制备镓金属纳米团簇的研究。本工作采用一步超声法,通过调节超声温度、时间等参数成功制备出两类镓纳米团簇。结合扫描电镜(SEM)和透射电镜(TEM)等表征手段,分析了镓纳米团簇制备过程中的温度效应,研究了镓纳米团簇的形态特征与成型过程。研究表明,在60 min的超声作用下,70℃左右是镓纳米团簇形成的最优温度,制备的镓纳米团簇形态可分为两大类:第一类是以破碎的镓颗粒为中心向外径向生长形成的簇状结构,第二类是不同棒状结构穿插交叠形成的簇状结构。本研究丰富了镓金属纳米团簇的种类,也为镓微/纳颗粒超声制备过程中的形态调控提供有益参考。Owing to their unique physicochemical properties,nanoclusters have attracted widespread attention,and show great promising in varies applications,such as in catalysis,sensing,and biomedicine.At present,there is no reports on the preparation of gallium nanoclusters by ultrasonication.In this work,two types of gallium nanoclusters were successfully prepared by one-step ultrasonication method by adjusting the para-meters of ultrasonic temperature and ultrasonic time.The temperature effect during the preparation of gallium nanoclusters was analyzed by scanning electron microscopy(SEM)and transmission electron microscopy(TEM),and the morphological characteristics and forming process of gallium nanoclusters were studied.It was found that the optimum temperature for gallium nanocluster formation was around 70℃at 60 min.In addition,the morphology of gallium nanoclusters can be divided into two types:the first type is a cluster structure formed by gallium growing radially outwards,and the second type formed by interspersed rods.This study enriches the variety of gallium nanoclusters and provides a useful refe-rence for the morphological control during the ultrasonic preparation of gallium micro/nano particles.

关 键 词：镓 纳米团簇 超声合成 形态调控 

分 类 号：G312[文化科学]