蜂蜜介导的银纳米粒子绿色合成。
Honey mediated green synthesis of silver nanoparticles.
机构信息
Department of Physics, Mar Ivanios College, Nalanchira, Thiruvananthapuram, Kerala, India.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Mar;75(3):1078-81. doi: 10.1016/j.saa.2009.12.058. Epub 2009 Dec 29.
The paper reports the pH controlled synthesis of silver nanoparticles using honey as reducing and stabilizing agents. By adjusting the pH of the aqueous solution containing metal ions and honey, nanoparticles of various size could be obtained at room temperature. The nanoparticles were characterized by UV-visible, high-resolution TEM, XRD and FTIR measurements. The colloid obtained at a pH of 8.5 is found to consist of monodispersed and nearly spherical silver nanoparticles of size approximately 4 nm which is a significant advancement in biosynthesis. The high crystallinity with fcc phase is evidenced by clear lattice fringes in the high-resolution TEM image and peaks in the XRD pattern corresponding to (111), (200), (220), (311) and (222) planes. FTIR spectrum indicates that the nanoparticles are bound to protein through the carboxylate ion group.
本文报道了使用蜂蜜作为还原剂和稳定剂,通过 pH 值控制合成银纳米粒子。通过调节含有金属离子和蜂蜜的水溶液的 pH 值,可以在室温下获得各种尺寸的纳米粒子。通过紫外-可见光谱、高分辨率透射电子显微镜、XRD 和 FTIR 测量对纳米粒子进行了表征。在 pH 值为 8.5 的条件下得到的胶体由单分散且近乎球形的银纳米粒子组成,粒径约为 4nm,这是生物合成方面的重大进展。高分辨率 TEM 图像中的清晰晶格条纹和 XRD 图谱中对应于(111)、(200)、(220)、(311)和(222)面的峰表明具有 fcc 相的高结晶度。FTIR 谱表明,纳米粒子通过羧酸根离子与蛋白质结合。