The Iranian researchers at Urumia University, Iran, in cooperation with colleagues from University of South Australia, achieved a simple low-cost method for the synthesis of various nickel and nickel hexacyanoferrate nanostructures.
"Since nickel hexacyanoferrate is able to exchange monovalent cations, examination of the feasibility of making this compound at nanoscale and using it as a nanoswitch could be of great importance in the production of nanodevices," Reza Emamali Sabzi, a professor at Urumia University, said in an interview with INIC news service.
"Nickel and nickel hexacyanoferrate nanostructures synthesis through a scientific economic method is accomplished in cooperation with Krishna Kant and Dr. Dusan Losic. The advantages of this method include no need to expensive equipments and controllability of diameter and length of nanostructures," he added.
Elaborating on the synthesis procedure of nickel nanostrcutures, he said, "We first anodized aluminum sheet to form alumina membrane. After removing the aluminum layer from the back of membrane and opening the nanotubes ends, we used the resulting alumina as a mold for the synthesis of nanostructures."
Sabzi reiterated that for this purpose, the team made bottom side of the membrane conductive by means of a thin gold layer and utilized it as an electrode.
"We then precipitated nickel in the alumina pores by applying appropriate reduction potential to the nickel solution. By dissolving the remaining membrane, we converted nickel nanostructures to nickel hexacyanoferrate nanostructures by electrochemical method and investigated the electrochemical behavior of nanostructures as well," he added.
More details concerning to this research are available at Electrochimica Acta, volume 55, pages 1829-1835, 2010.
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