Saka, CaferBalbay, Asim2024-12-242024-12-2420210961-95341873-2909https://doi.org/10.1016/j.biombioe.2021.106072https://hdl.handle.net/20.500.12604/6378Due to their low cost and high availability, interest in biomass materials in catalytic studies is increasing. It is possible to increase the catalytic activities by the development of metal-free catalysts obtained by adding different atoms to carbon materials. Here, oxygen (O) and nitrogen (N) doped metal-free carbon catalysts (N-AC-N) were synthesized using activated carbon (AC) obtained from hazelnut shells by KOH activation. These metalfree catalysts were used successfully for the first time in the NaBH4 methanolysis reaction (NaBH4-MR). The structural and physical-chemical properties of the metal-free catalysts obtained were analysed by XRD (X-ray diffraction), elemental analysis (CHNS), FT-IR (Fourier transform infrared spectroscopy), SEM (scanning electron microscopy), and nitrogen adsorption surface analyses. N and O doped metal-free catalyst showed very good catalytic performance against NaBH4-MR. The hydrogen production rate (HGR) with 10 mg metal-free catalyst at 30 degrees C and the activation energy(Ea) of the reaction were calculated as 16250 mL min(-1) g(-1) and 11.45 kJ mol(-1), respectively. At the same time, with favourable reusability results, this metal-free catalyst is a promising candidate for the hydrogen(H-2) generation system.eninfo:eu-repo/semantics/closedAccessOxygen and nitrogenCatalystSodium borohydride methanolysisHydrogenArticle149Q1WOS:000663083900010Q12-s2.0-8510497227810.1016/j.biombioe.2021.106072