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Sodium alginate mediated route for the synthesis of monodisperse silver nanoparticles using glucose as reducing agents海藻酸鈉為保護劑葡萄糖為還原劑合成單分散銀納米粒子
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華中科技大學,華中科技大學,華中科技大學,華中科技大學

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Sodium alginate mediated route for the synthesis of monodisperse silver nanoparticles using glucose as reducing agents
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Huazhong University of Science and Technology,Huazhong University of Science and Technology,Huazhong University of Science and Technology,Huazhong University of Science and Technology

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    摘要:

    報道了一種在水溶液中的簡單綠色法制備納米銀溶膠。硝酸銀，海藻酸鈉素，葡萄糖分別做為銀源，保護劑和還原劑。納米溶膠的顏色從無色變到黃色，表明生成了納米銀粒子。利用透射型電子顯微鏡（TEM），紫外可見光譜（UV-vis）和X-射線衍射（XRD）對樣品進行了分析。TEM圖像表明，所得到的銀納米顆粒的為粒徑較小，分散性較好的球狀粒子，分布范圍較窄，從3 nm 到12 nm。XRD結(jié)果表明所得到的納米金屬粒子為單晶的納米銀顆粒。通過UV光譜對反應時間、反應溫度、銀離子濃度及還原劑的濃度對粒徑的影響進行了研究。由于該方法具有無污染、簡單、廉價等優(yōu)點，因此該方法可以做為一種較好的制備納米銀粒子的方法。該方法可以擴展到其它貴金屬的技術應用，例如藥用，工業(yè)應用等。

    Abstract:

    A simple and environmentally friendly method was developed for preparing colloidal silver nanoparticels in aqueous solutions using silver nitrate, sodium alginate and glucose as silver precursor, capping agents and reducing agents respectively. The formation of silver nanoparticles was observed by change of color from colorless to yellow. The silver nanoparticles were characterized by transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis) and X-ray diffraction (XRD). The TEM images showed that, the particles are small, well dispersed and spherical in shape with a narrow distribution from 3 nm to 12 nm. The XRD demonstrated that the obtained metallic nanoparticles are single crystalline silver nanoparticles. The effects of the reaction time, reaction temperature and the concentration of silver ion and reducing agent on the particle size were investigated by the UV-vis spectra. The present process is an excellent candidate for the preparation of silver nanoparticles because it is simple, pollutant free, inexpensive and easy to perform. The method may be extended to other noble metals, such as Au, Pd and Pt, for medicinal, industrial and technological applications.

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董春法,張祥林,蔡浩,曹傳亮. Sodium alginate mediated route for the synthesis of monodisperse silver nanoparticles using glucose as reducing agents海藻酸鈉為保護劑葡萄糖為還原劑合成單分散銀納米粒子[J].稀有金屬材料與工程,2016,45(2):261~266.[dongchunfa, zhangxianglin, caihao, caochuanliang. Sodium alginate mediated route for the synthesis of monodisperse silver nanoparticles using glucose as reducing agents[J]. Rare Metal Materials and Engineering,2016,45(2):261~266.]
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  • 收稿日期:2014-01-13
  • 最后修改日期:2014-03-04
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  • 在線發(fā)布日期: 2016-07-15
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