Efficient hydrogen generation from NaBH4 methanolysis using nitrogen-functionalized activated carbon supported CoO nanoparticles

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dc.contributor.authorSaka, Cafer
dc.date.accessioned2026-10-23T18:14:01Z
dc.date.available2026-10-23T18:14:01Z
dc.date.issued2027
dc.departmentSiirt Üniversitesi
dc.description.abstractThe growing demand for sustainable hydrogen production and the efficient utilization of biomass-derived resources has stimulated the development of low-cost, high-performance catalysts for chemical hydrogen storage systems. Herein, a nitrogen-functionalized activated carbon-supported cobalt oxide catalyst (CoO@N@AC) was successfully synthesized through a simple hydrothermal strategy and evaluated for hydrogen generation via sodium borohydride (NaBH4) methanolysis. Structural characterization by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) analysis, and X-ray photoelectron spectroscopy (XPS) confirmed the successful formation of finely dispersed CoO nanoparticles on a defect-rich nitrogen-functionalized activated carbon framework containing pyridinic, pyrrolic, and graphitic nitrogen species. The combination of hierarchical porosity, nitrogen functionalization, and highly dispersed CoO nanoparticles provided a favorable surface architecture for catalytic hydrogen generation. The synthesized catalyst exhibited excellent catalytic activity, achieving a maximum hydrogen generation rate of 14073 mLmin-1gcat-1 at 45 degrees C with an apparent activation energy of 39.35 kJ mol-1. Moreover, the catalyst retained high catalytic activity after five consecutive reaction cycles, demonstrating satisfactory stability and reusability. The enhanced catalytic performance is attributed to the synergistic integration of the porous activated carbon support, nitrogen-induced surface modification, and nanosized CoO active sites, which together promote efficient reactant accessibility and strong metal-support interactions. This work demonstrates an effective strategy for transforming activated carbon into a high-value functional catalyst and provides valuable insights into the design of sustainable carbon-supported transition-metal catalysts for hydrogen generation and clean energy applications.
dc.identifier.doi10.1016/j.biombioe.2026.109983
dc.identifier.issn0961-9534
dc.identifier.issn1873-2909
dc.identifier.scopus2-s2.0-105047679353
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.biombioe.2026.109983
dc.identifier.urihttps://hdl.handle.net/20.500.12604/12257
dc.identifier.volume217
dc.identifier.wosWOS:001852734600001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorSaka, Cafer
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofBiomass & Bioenergy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20261017
dc.subjectActivated Carbon
dc.subjectNitrogen-Functionalized Carbon
dc.subjectCobalt Oxide Catalyst
dc.subjectSodium Borohydride Methanolysis
dc.subjectHydrogen Generation
dc.titleEfficient hydrogen generation from NaBH4 methanolysis using nitrogen-functionalized activated carbon supported CoO nanoparticles
dc.typeArticle

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