Iranian Scientists Develop New Nanosensor for Detecting Toxic Gases http://english.farsnews.com/newstext.php?nn=9002010247

 Iranian researchers managed to introduce a nanosensor for the detection and adsorption of toxic gases produced in chemical and biochemical processes. Iranian researchers managed to introduce a nanosensor for the detection and adsorption of toxic gases produced in chemical and biochemical processes. "Considering the fact that OCN- anion is used as a toxic gas in chemical bombs, producing a nanosensor able to adsorb this substance is very important," Dr. Mohammad Taqi Bayee, faculty member at Azad Islamic University, Azadshahr branch,

said in an interview with the INIC. "We did this research to find an answer for the question of if carbon nanotubes can be utilized as absorbers for the adsorption of OCN- anion," he said.

"We chose carbon nanotubes of approximate length of 10 A° with chiralities (6,0), (0,7), and (0,8) and drew OCN- radical to the nanotube surface at different directions and carried calculations on these nanotubes," Bayee said. The results imply that carbon nanotubes could be used as an adsorber for the adsorption of this anion. The diameter of carbon nanotube doesn't influence its adsorption. It was also revealed that OCN- anion could be adsorbed by nanotube better from its nitrogen tail. "The detection of gas molecules resulted from the chemical and biochemical processes are of great importance to the industrial, peripheral and medical displays," he concluded.