In 1991, Iijima first reported the discovery of carbon nano tubes . Since then, some other nanotubes have been developed in succession because of their potential applications for electronic devices, catalysis, separation and optical devices, etc..
Silica nano-tube is prepared using template method followed by immobilized Cyanex 272. Metals recovery from printed circuit is studied. Due to having high surface and nano hollow structured, high efficiency towards metals recovery is achieved and as well as higher amount of Cyanex 272 was found to be trapped.
The immobilized nano tube can be used in diverse application such as selective separation of metals, recovery of high purity metal from its lean sources, removal of toxic metals from industrial waste, preconcentration of metals to improve detection limits and so on. Due to the providing a large surface area, this nano tube shows the high performances