控制剂碳酸钠辅助微波合成球形纳米银颗粒

Synthesis of Spheric Silver Nanoparticles by a Microwave Method with Sodium Carbonate

摘要:

在聚乙烯吡咯烷酮（PVP）存在下，以无水Na2CO3为控制剂，利用微波辅助多元醇法快速加热还原硝酸银制备了球形Ag纳米颗粒，研究了Na2CO3的添加量对球形Ag纳米颗粒大小的影响。用扫描电镜（SEM）、透射电镜（TEM）、X射线光电子能谱（XPS）、X射线衍射(XRD)和紫外-可见吸收光谱（UV-Vis）对制备的银纳米颗粒的形貌、组分、粒径和相结构进行了表征。结果表明，制备的Ag纳米颗粒的平均粒径随着Na2CO3添加量的增大而逐渐减小。

Abstract:

Spheric silver nanoparticles were synthesized in the presence of polyvinyl pyrrolidone (PVP) as surfactant and sodium carbonate (Na2CO3) as controlled agent by the reduction of silver ions through a microwave-assisted polyol method. The effects of adding amount of Na2CO3 on the silver nanoparticle size were investigated. The morphology, composition, particle size and phase structure of the silver nanoparticles were characterized by SEM, TEM, XPS, XRD and UV-vis. The results show that the average size of silver nanoparticles decreases with the increase of the adding amount of Na2CO3.