Toprak, Neslihan EratOzer, AbdulkadirBozkurt, Gamze2026-03-262026-03-2620240884-29142044-532610.1557/s43578-024-01387-52-s2.0-85197787348https://doi.org/10.1557/s43578-024-01387-5https://hdl.handle.net/20.500.14901/3394Özer, A Kadir/0000-0002-0487-3680; Erat Toprak, Neslihan/0000-0003-2174-4108In this study, we investigate for the first time the catalytic activity of the Co/Co3O4-Cu2O-ZnO catalyst in hydrogen production from the hydrolysis of NaBH4. After the Co3O4-CuO-ZnO support material was synthesized by the chemical precipitation method, the impregnation method was used to dope Co on the support material. Morphological and structural analyses of the Co/Co3O4-Cu2O-ZnO catalyst were investigated by XRD, XPS, SEM, TEM, and BET methods. Then, activity tests of the catalyst were performed in an H-2 generation system. The hydrogen generation rate (HGR) of the Co/Co3O4-Cu2O-ZnO catalyst was found 4698 ml min(-1) gcat(-1) at 25 degrees C. After the HGR measurements at 25, 35, 45, and 55 degrees C the activation energy of the Co/Co3O4-Cu2O-ZnO catalyst was calculated as 28.05 kJ mol(-1). In addition, the HGR value had reached a high value such as 12,920 ml min(-1) gcat(-1) at 55 degrees C.eninfo:eu-repo/semantics/closedAccessArticle