Controllable biosynthesis of gold nanoparticles from a Eucommia ulmoides bark aqueous extract
Controllable biosynthesis of gold nanoparticles from a Eucommia ulmoides bark aqueous extract
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DOI：
10.1016/j.saa.2015.01.109
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发表时间：
2015-05-05
影响因子：
4.4
通讯作者：
Liu, Huihong
中科院分区：
文献类型：
--
作者：
Guo, Mingxia;Li, Wei;Liu, Huihong
本文报道了杜仲皮水提物绿色合成金纳米颗粒的方法。考察了反应物浓度、反应混合物的pH值、温度和孵化时间等参数对纳米金颗粒控制形成的影响。高分辨电子显微镜(HRTEM)、能量色散X射线能谱(EDX)和X射线衍射仪(XRD)的表征表明，所合成的AuNPs为球形，具有面立方晶体(FCC)结构。Zeta电位和动态光散射(DLS)的结果表明，所制备的AuNPs具有良好的稳定性和窄的尺寸分布。该合成方法简单、经济、无毒、高效。所合成的AuNPs对偶氮染料模型化合物：活性黄179和刚果红具有良好的催化还原脱色活性。(C)2015爱思唯尔B.V.保留所有权利。
The present work reports the green synthesis of gold nanoparticles (AuNPs) by water extract of Eucommia ulmoides (E. ulmoides) bark. The effects of various parameters such as the concentration of reactants, pH of the reaction mixture, temperature and the time of incubation were explored to the controlled formation of gold nanoparticles. The characterization through high resolution-transmission electron microscopic (HRTEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) infer that the as-synthesized AuNPs were spherical in shape with a face cubic crystal (FCC) structure. The results from zeta potential and dynamic light scattering (DLS) suggest the good stability and narrow size distribution of the AuNPs. This method for synthesis of AuNPs is simple, economic, nontoxic and efficient. The as-synthesized AuNPs show excellent catalytic activity for the catalytic reducing decoloration of model compounds of azo-dye: reactive yellow 179 and Congo red. (C) 2015 Elsevier B.V. All rights reserved.