Vankar Padma S, Bajpai Dhara
Facility for Ecological and Analytical Testing (FEAT), Indian Institute of Technology, Kanpur 208 016, India.
Indian J Biochem Biophys. 2010 Jun;47(3):157-60.
Biosynthesis of gold nanoparticles has emerged as an important area in nanotechnology and biotechnology due to growing need to develop environmentally benign technologies. Generally, nanoparticles are prepared by a variety of chemical methods which are not environmentally friendly. In the present study, we report a rapid and convenient method to reductively prepare gold nanoparticles from auric chloride using aqueous extract of Mirabilis jalapa flowers. The flower extract acts as a reducing agent and encapsulating cage for the gold nanoparticles. The production of gold nanoparticles has been done by the controlled reduction of the Au3+ ion to Au0. The formation of gold nanoparticles has been established by FT-IR and UV-Vis spectroscopy, as well as by TEM, XRD, EDAX and AFM. The study suggests that M. jalapa flowers can be a cheap source as a reductant for the production of gold nanoparticles.
由于开发环境友好型技术的需求不断增长，金纳米颗粒的生物合成已成为纳米技术和生物技术中的一个重要领域。一般来说，纳米颗粒是通过多种化学方法制备的，这些方法并不环保。在本研究中，我们报告了一种快速简便的方法，即使用紫茉莉花花的水提取物从氯化金中还原制备金纳米颗粒。花提取物充当金纳米颗粒的还原剂和包封笼。通过将Au3+离子可控还原为Au0来制备金纳米颗粒。通过傅里叶变换红外光谱（FT-IR）、紫外可见光谱（UV-Vis）以及透射电子显微镜（TEM）、X射线衍射（XRD）、能量散射X射线光谱（EDAX）和原子力显微镜（AFM）确定了金纳米颗粒的形成。该研究表明，紫茉莉花可以作为生产金纳米颗粒的廉价还原剂来源。
