Vahid ghafouri
Research Institute of Applied Sciences (ACECR), Shahid Beheshti University, Physics faculty member
[ 1 ] - Optical Properties of ZnO Nanowires and Nanorods Synthesized by Two Step Oxidation Process
ZnO nanowires with a diameter of 70 nm and nanorods with a diameter in the range of 100-150 nm and two micrometer in length were grown on glass substrates by resistive evaporation method and applying a two step oxidation process at low temperatures, without using any catalyst, template or buffer layer. XRD pattern of these nanostructures indicated a good crystallinity property with wurtzite hex...
[ 2 ] - Electrochemical Sensing of H2S Gas in Air by Carboxylated Multi-walled Carbon Nanotubes
The electrochemical sensor for detecting hydrogen sulfide was fabricated. H2S gas molecules pass through polytetrafluoroethylene membrane with 0.22 mm pore size. Carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) were used to fabricate working and counter electrodes. It can be seen from Field Emission Scanning Electron Microscopy (FESEM) images of the working electrode that...
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