AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Laser-Plasma Synthesis of Sb Nanoparticles
A.M. Baklanov, O.V. BOROVKOVA, G.N. Grachev, A.A. Onischuk, A.L. Smirnov, M.I. Zimin, Institute of Chemical Kinetics and Combustion, Novosibirsk
Abstract Number: 295 Working Group: Nanoparticles and Materials Synthesis
Abstract Developing nanotechnology requires more complex methods for the synthesis of nanomaterials, which make it possible to vary the composition, size, morphology and other properties of nanosystems. One of promising approaches for large-scale and inexpensive production of nanomaterials is a laser-plasma synthesis. This type of synthesis can be used for production of refractive nanoparticles for nanoceramics, semiconducting nanomaterials for gas sensing, photocatalysis, solar cell, etc. The laser synthesis is a perspective method of nanoproduction because it is easy to control the final product structure and composition by doping with different elements.
This work is aimed at Sb and Sb$_2O$_3 nanoparticles synthesis as the Sb based compounds of interest due to semiconducting or thermoelectric properties. Laser-plasma synthesis of these nanoparticles was carried out by evaporation from Sb target in the plasma of optical pulsating discharge ignited in flow of oxygen or argon/oxygen with the flow rate up to 30 l / min. The laser irradiation frequency was from 15 to 60 kHz. The sampling of produced particles was performed using an ejecting device through a tube of inner diameter 0.8 mm placed at the distance of 10 mm from the surface. The ejecting way of sampling was used to dilute the aerosol and suppress the coagulation.
The diluted aerosol was analyzed by the automatic diffusion battery coupled with a condensation chamber and photoelectric counter to obtain particle size distribution in the range 3 - 200 nm. Morphology of the obtained nanoparticles was studied by transmission electron microscope.