Z Roosta - Graduate Student, Persian Gulf University of Bushehr
A Izadbakhsh - Assistant Professor of Chemical Engineering, Persian Gulf University of Bushehr
A.M Sanati - 3Assistant Professor of Environment Pollution, Persian Gulf University of Bushehr
SH Osfouri - 4Associate Professor of Chemical Engineering, Persian Gulf University of Bushehr

In this paper, synthesis of core shell structured NiO2@MCM-41 nanoparticles with vesiclesas soft template is reported for the first time. Stable vesicles first formed at the concentration of 0.03(mol·L-1) with CTAB/SDBS ratio of 1:2. Then, vesicle aqueous solution with a metal core was addedin the MCM-41 gel, stirred to a highly dispersed solution. After high-temperature calcination,NiO2@MCM-41 nanoparticles were obtained. The structure was characterized by transmission electronmicroscope (TEM) and N2 adsorption/desorption analysis to measure surface area, pore size andvolume. TEM image confirmed core-shell structure and the hexagonally ordered structure of shell ofsilica MCM-41. The result indicated that the average diameter of synthesized core-shell NiO2@MCM-41 particles is 50-80 nm and most of them are in spherical shape. The result of N2 isothermadsorption/desorption analysis indicated successfull formation of mesoporous shell.

Core-shell, Catalyst, Nanocomposite, Silica, Mesoporous