title: Preparation of gold nanoparticles from Mirabilis jalapa flowers.
abstract: 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.
authors.affiliation: Facility for Ecological and Analytical Testing (FEAT), Indian Institute of Technology, Kanpur 208 016, India. psv@iitk.ac.in
authors.forename: Padma S
authors.initials: PS
authors.lastname: Vankar
authors.forename: Dhara
authors.initials: D
authors.lastname: Bajpai
mesh_terms: D035264:Flowers / Q000378:metabolism; D006046:Gold / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D018625:Microscopy, Atomic Force; D046529:Microscopy, Electron, Transmission; D039282:Mirabilis / Q000378:metabolism*; D010084:Oxidation-Reduction
chemical_list: D006046:Gold