Zn-doped TiO2 nanocatalyst for enhanced hydrogen generation via NaBH4 methanolysis

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dc.contributor.authorBalbay, Asim
dc.contributor.authorErdemoglu, Sema
dc.contributor.authorYilmaz, Hatice Caglar
dc.contributor.authorSaka, Cafer
dc.date.accessioned2026-06-19T06:39:56Z
dc.date.available2026-06-19T06:39:56Z
dc.date.issued2026
dc.departmentMalatya Turgut Özal Üniversitesi
dc.description.abstractIn this study, we report for the first time the strategic Zn doping of TiO2 nanoparticles as an innovative approach to dramatically enhance catalytic hydrogen production via sodium borohydride (NaBH4) methanolysis. This novel Zn-TiO2 nanocatalyst was synthesized by a simple sol-gel method with an optimal Zn doping level of 1 wt%, producing uniform nanospheres with an average size of 8.27 nm. Structural characterizations confirmed the successful incorporation of Zn ions into the TiO2 lattice, inducing oxygen vacancies and significantly increasing surface area-two key factors that synergistically boost catalytic activity beyond that of pure TiO2. As a result, the Zn-TiO2 catalyst delivered a remarkable hydrogen generation rate (HGR) of 20160 mLmin(-1)g(-1) at 30 degrees C with 0.125 g NaBH4. Kinetic analyses revealed strong temperature dependence, with HGR rising from 16,965 to 38145 mLmin(-1)g(-1) between 25-40 degrees C and an activation energy (Ea) of 39.1 kJ mol(-1). Increasing NaBH4 concentration produced an exponential HGR increase, reaching saturation at similar to 0.20 g and peaking at 34,950 mLmin(-1)g(-1) with 0.25 g NaBH4. This work uniquely demonstrates that Zn-induced structural modifications can transform TiO2 into a highly efficient, low-cost catalyst for clean hydrogen production, offering a novel pathway toward scalable and sustainable hydrogen energy systems.
dc.identifier.doi10.1016/j.fuel.2025.137138
dc.identifier.issn0016-2361
dc.identifier.issn1873-7153
dc.identifier.orcid0000-0003-2534-5921
dc.identifier.scopus2-s2.0-105019215144
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.fuel.2025.137138
dc.identifier.urihttps://hdl.handle.net/20.500.12899/5868
dc.identifier.volume406
dc.identifier.wosWOS:001598246600001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofFuel
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260612
dc.subjectNanostructured Catalyst
dc.subjectHydrogen Generation
dc.subjectSol-Gel Synthesis
dc.subjectZn-Doped Tio2
dc.subjectNabh4 Methanolysis
dc.titleZn-doped TiO2 nanocatalyst for enhanced hydrogen generation via NaBH4 methanolysis
dc.typeArticle

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