自模板法合成银纳米碗  

Single-Crystalline Silver Nanobowls Synthesized by Self-Template Method

作　　者：卢鹏荐 官建国[1] 章嵩[1] Lu Pengjian;Guan Jianguo;Zhang Song(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《稀有金属材料与工程》2022年第5期1597-1600,共4页Rare Metal Materials and Engineering

基　　金：Science Challenge Project(TZ2016001)。

摘　　要：采用自模板法合成了碗状银纳米材料,研究了银纳米碗的结构和生长机理。结果表明:AgNO_(3)和NaOH反应生成Ag_(2)O纳米簇,然后加入还原剂甲醛,在Ag_(2)O模板表面形成Ag纳米壳,副产物CO_(2)则在Ag壳内聚集。随着反应的进行,不断增大的压力最终击穿Ag壳,形成了直径约为200 nm的Ag纳米碗。该方法为特殊结构贵金属纳米材料的研究提供了理论和实验基础。The silver nanobowls were prepared by self-template method,and the structure and growth mechanism of Ag nanobowls were investigated.Results show that the Ag_(2)O clusters result from the reaction of AgNO_(3) and NaOH.After adding the reductant methanal,Ag nano-shell is obtained on the Ag_(2)O cluster surface with the by-product CO_(2) inside the Ag nano-shell.With the reaction further proceeding,the increasing pressure breaks through the Ag nano-shell,thereby forming the Ag nanobowls with the size of approximately 200 nm.This unique synthesis method provides theoretical and experiment basis for the noble metal nanomaterials with special structure.

关 键 词：贵金属 纳米结构 自模板法 

分 类 号：TB383.1[一般工业技术—材料科学与工程]