室温条件下纳米银的温和制备和形貌调控  

Facial Preparation and Morphology Control of Silver Nanoparticles at Room Temperature

作　　者：丁刚强 彭戴 游立 夏柳芬 熊剑 DING Gang-qiang;PENG Dai;YOU Li;XIA Liu-fen;XIONG Jian(Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China;School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]武汉船用电力推进装置研究所,武汉430064 [2]湖北工业大学材料与化学工程学院,武汉430068

出　　处：《包装工程》2022年第11期8-14,共7页Packaging Engineering

基　　金：国家自然科学基金(51901072)。

摘　　要：目的探究室温条件下不同还原剂以及其他实验助剂在化学还原纳米银过程中对其颗粒粒径、尺寸分布和形貌的影响。方法以抗坏血酸为还原剂,聚乙烯吡咯烷酮(PVP)为分散剂,柠檬酸钠为保护剂和第2还原剂,选择葡萄糖和硼氢化钠作对照,在室温下通过化学还原的方法来制备纳米银颗粒。通过马尔文激光粒度仪、紫外–可见光谱(UV-vis)、透射电镜(TEM)等对所制备纳米银进行表征。结果采用抗坏血酸作为还原剂时,通过调控抗坏血酸体积(0.2 mL),固定柠檬酸钠和PVP体积分别为0.5、0.6 mL,制备出粒径较小(平均粒径为56 nm)且尺寸分布较均一的球形纳米银;采用葡萄糖和硼氢化钠作还原剂时纳米银颗粒尺寸过大(平均粒径分别为216 nm和189 nm)。结论采用抗坏血酸作为还原剂,调控柠檬酸钠、PVP等实验参数在最佳范围,更容易制备出球形度好、粒径小的均匀纳米银溶液。The work aims to investigate the effects of different reducing agents and other experiment additives on the particle size,size distribution and morphology of nano-silver particles during the chemical reduction synthesis.Silver nanoparticles were prepared by chemical reduction at room temperature with ascorbic acid as reducing agent,polyvinyl-pyrrolidone(PVP)as dispersant,sodium citrate as protective agent and second reducing agent,and glucose and dium borohydride were selected as control.The prepared silver nanoparticles were characterized by Malvin laser particle sizer,UV-Vis and TEM.With ascorbic acid as reducing agent,spherical silver nanoparticles with small particle size(average particle size of 56 nm)and uniform size distribution were prepared by adjusting the volume of ascorbic acid(0.2 mL),fixing the volume of sodium citrate to 0.5 mL and PVP to 0.6 mL;however,the size of silver nanoparticles was too large(the average particle size was 216 nm and 189 nm,respectively)when glucose and sodium borohydride were used as reducing agents.With ascorbic acid as reducing agent and adjusting the experimental parameters such as sodium citrate and PVP in the optimal range,it is easier to prepare uniform nano-silver solution with good sphericity and small particle size.

关 键 词：纳米银 抗坏血酸 粒径 

分 类 号：TB383[一般工业技术—材料科学与工程]