Iranian researchers in cooperation with colleagues from Putra University, Malaysia, managed to synthesize a nanohybrid with high thermal resistance and achieved porous carbon by running thermal treatment on the mentioned nanohybrid.
“We, first, examined the viability of increasing thermal resistance of the product by doping zinc nitrate hydroxide layers with nickel, cobalt, and iron first and by producing nanohybrid material with gallate then. Afterwards, we examined the feasibility of porous carbon production after thermal treatment of nanohybrids under nitrogen atmosphere,” Dr. Mohammad Yeganeh Ghotbi, the research supervisor, said to the news service of INIC.
Elaborating the procedure of research, he stated, “Doped and un-doped layered zinc nitrate hydroxide was synthesized by co-precipitation method. This synthesis included adding sodium hydroxide to a solution containing zinc ions with doping agents of nickel, cobalt, and iron until the pH reached 7 under nitrogen atmosphere. The resulting nanohybrids then underwent thermal treatment at different temperatures under nitrogen atmosphere. The produced oxides were eventually rinsed to yield porous carbons.”
“Nanohybrid production increased thermal treatment of zinc nitrate hydroxide raw material more than 500 degrees and the presence of doping agents doubled this increment. Moreover, the produced carbons (depending on the type of doping agent) possess different mesoporosities and high various porous volumes,” he added.
Yeganeh also described “simplicity, wide range of carbon sources and cheap required raw materials” as the advantages of the method, and said, “Nanohybrid materials could be used in many polymeric composites of textile composite fibers to produce incombustible cloth. The resulting carbons are also usable in gas adsorption systems due to their high controlled porosity and surface area.”
The details of the present study are available at Solid State Sciences, volume 11, pages 2125-2132, 2009.