Template synthesis of zinc oxide nanoparticles entrapped in the zeolite Y matrix and applying them for thermal control paint

Zinc oxide nanoparticles within faujasite zeolites have been synthesized by a procedure comprising of (i) ion-exchange of zinc ions into the zeolite, (ii) precipitation of zinc ions with sodium hydroxide within the supercage of the zeolite, and (iii) calcination. The products were characterized by XRD, SEM, TEM, EDX and FTIR techniques. The size of the ZnO particles was in the range of 24±4 nm. Finally, ZnO@zeolite was used as a pigment and its optical properties were studied.