Green synthesis of silver nanoneedles using shallot and apricot tree gum  

利用葱和杏树胶绿色合成银纳米针（英文）

作　　者：Mohammad Mahdi TAHERI Mohammed Rafiq ABDUL KADIR Noor Kamila AHMAD SHAFIAI Tolou SHOKUHFAR Mahtab ASSADIAN Mostafa Rezazadeh SHIRDAR 

机构地区：[1]Materials Engineering Department,Faculty of Mechanical Engineering,Universiti Teknologi Malaysia [2]Medical Devices & Technology Group,Faculty of Bioscience and Medical Engineering,Universiti Teknologi Malaysia [3]Department of Mechanical Engineering-Engineering Mechanics,Multiscale Technologies Institute,Michigan Technological University [4]Department of Bioengineering,University of Illinois at Chicago

出　　处：《Transactions of Nonferrous Metals Society of China》2015年第10期3286-3290,共5页中国有色金属学报（英文版）

基　　金：supported by the international doctoral fellowship (IDF) scheme from Universiti Teknologi Malaysia

摘　　要：A green synthesis method to produce silver nanoneedles was described using shallot and apricot tree gum（ATG）.A fast,simple,and low cost method was used to synthesize silver with nanoparticle and nanoneedle shape from the silver nitrate solution.Shallot as a reducing agent and apricot tree gum（ATG） as a stabilizer and a capping agent were utilized to reduce and form silver ions into silver atoms with needle and particle shape.Moreover,high crystalline structures of silver nanoparticles（AgNPs） with diameters of 8-20 nm and silver nanoneedles with average diameters of 50-60 nm and lengths of 5-10 μm were consequently synthesized by shallot and the mixture of shallot and ATG.A self-assembly mechanism was proposed to indicate the formation of needle-like structures of spherical Ag NPs via carbon chains of ATG.The results indicate that the presence of ATG with shallot can transfer the reduced Ag NPs into the silver nanoneedle.The findings were characterized using X-ray diffraction（XRD）,ultra violet visible（UV-Vis） spectrometry,field emission scanning electron microscopy（FESEM）,and transmission electron microscopy（TEM） techniques.使用葱和杏树胶为原料,采用一种快速、简单和低成本的绿色方法在硝酸银溶液中合成银纳米颗粒和纳米针。葱作为还原剂,杏树胶为稳定剂和覆盖剂,银离子被还原成颗粒状和针状的银原子。利用葱或葱与杏树胶混合物合成的银纳米颗粒的直径为8~20 nm,银纳米针的直径为50~60 nm,长度为5~10μm。提出一个自组装机理来阐明球形银纳米颗粒通过杏树胶的碳链形成针状结构,通过这种方式,葱和杏树胶可将还原的银纳米颗粒转变成银纳米针。采用XRD、紫外-可见光谱、场发射电子扫描显微镜和透射电镜对所得样品进行表征。

关 键 词：green synthesis SILVER NANONEEDLE nanoparticle SHALLOT apricot tree gum self-assembly 

分 类 号：O614.122[理学—无机化学] TB383.1[理学—化学]