title: Bacterial kinetics-controlled shape-directed biosynthesis of silver nanoplates using Morganella psychrotolerans.
abstract: We show for the first time that by controlling the growth kinetics of Morganella psychrotolerans, a silver-resistant psychrophilic bacterium, the shape anisotropy of silver nanoparticles can be achieved. This is particularly important considering that there has been no report that demonstrates a control over shape of Ag nanoparticles by controlling the growth kinetics of bacteria during biological synthesis. Additionally, we have for the first time performed electrochemistry experiments on bacterial cells after exposing them to Ag(+) ions, which provide significant new insights about mechanistic aspects of Ag reduction by bacteria. The possibility to achieve nanoparticle shape control by using a "green" biosynthesis approach is expected to open up new exciting avenues for eco-friendly, large-scale, and economically viable shape-controlled synthesis of nanomaterials.
authors.affiliation: School of Applied Sciences, RMIT University, GPO Box 2476 V, Melbourne, VIC 3001, Australia.
authors.forename: Rajesh
authors.initials: R
authors.lastname: Ramanathan
authors.forename: Anthony P
authors.initials: AP
authors.lastname: O'Mullane
authors.forename: Rasesh Y
authors.initials: RY
authors.lastname: Parikh
authors.forename: Peter M
authors.initials: PM
authors.lastname: Smooker
authors.forename: Suresh K
authors.initials: SK
authors.lastname: Bhargava
authors.forename: Vipul
authors.initials: V
authors.lastname: Bansal
mesh_terms: D007700:Kinetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D020596:Morganella / Q000737:chemistry / Q000378:metabolism*; D010316:Particle Size; D012834:Silver / Q000737:chemistry / Q000378:metabolism*; D013499:Surface Properties
chemical_list: D012834:Silver