One of the often-used active metals for the hydrolysis of NaBH4 to produce hydrogen is cobalt . The hydrolysis of NaBH4 is catalyzed by cobalt chloride at a rate that is ten times greater than that of an acid accelerator like boric acid. The solid black precipitate that was produced during the reaction had an atomic ratio of roughly 2 (Co: B) i.e., Co2B, according to chemical analysis. The active catalyst for the hydrolysis of NaBH4 was cobalt boride (Co2B). The catalysis can be performed using single transition metal , bimetallic , ternary , quaternary , and multi-elements containing . ZnO was synthesised via sol-gel procedure and was applied as catalyst for the hydrolysis of NaBH4 . The synthesis procedure offer simple modification of ZnO nanoparticle with other metal oxides such as TiO2 and CeO2 .