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Maryam Rajabzadeh,Reza Khalifeh,Hossein Eshghi,Ali Hafizi 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
A new nanoreactor type structure composed of hollow mesoporous silica spheres and CuO nanoparticlesloaded inside the interior cavity of spheres has been designed and successfully prepared. The synthesismethod is proceed in a four step procedure by using carbon spheres as the hard template together with acoating of tetraethyl orthosilicate (TEOS) and cetyltrimethyl ammonium bromide (CTAB) mixture. Theobtained nanoreactors were characterized with FE-SEM, elemental mapping, TEM, XRD, BET, ICP and TPRanalysis. The CO2 fixation reaction is applied to evaluate the catalytic performance of the synthesizedCuO@SiO2 multi-yolk@shell catalyst. This catalyst exhibits superior activity in CO2 fixation reactions with96% yield in 4 h at low pressure. The catalyst demonstrates superb mechanical stability, high activity andis recovered for at least six times without loss of activity in CO2 fixation reaction, showing that this type ofnanoreactor could be applied as a promising material in advanced catalysis applications.