Sulphur and nitrogen-doped metal-free microalgal carbon catalysts for very active dehydrogenation of sodium borohydride in methanol

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dc.authoridSAKA, Cafer/0000-0003-2534-5921
dc.contributor.authorSaka, Cafer
dc.date.accessioned2024-12-24T19:27:15Z
dc.date.available2024-12-24T19:27:15Z
dc.date.issued2021
dc.departmentSiirt Üniversitesi
dc.description.abstractMicro algae based on Spirulina platensis is successfully used for the synthesis of S and N-doped metal-free carbon materials. The procedure consists of three stages; (i) Activated carbon production by KOH activation in CO2 atmosphere (S-AC), (ii) S atom doping to the obtained S-AC using sulphuric acid by hydrothermal activation (S-AC-S), (iii) N atom doping by hydrothermal activation to S-AC obtained using nitric acid (S-AC-S-N). The S and N doped metal-free catalysts are used for H-2 release in NaBH4 methanolysis reaction (NaBH4-MR) for the first time. The metal-free carbon catalysts are characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM-EDS), X-ray diffractometer spectroscopy (XRD), Fourier-transform infrared spectroscopy (FTIR), nitrogen adsorption and elemental analysis (CHNS) methods. When the HGR values obtained for S-AC-S-N (26,000 mL min(-1) g(-1)) and S-AC (2641 mL min(-1) g(-1)) are compared, there is a 9.84 fold increase. Activation energy (Ea) value for S-AC-S-N was 10.59 kJ mol(-1). (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.ijhydene.2021.03.001
dc.identifier.endpage18337
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issue35
dc.identifier.scopus2-s2.0-85103561436
dc.identifier.scopusqualityQ1
dc.identifier.startpage18326
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2021.03.001
dc.identifier.urihttps://hdl.handle.net/20.500.12604/6565
dc.identifier.volume46
dc.identifier.wosWOS:000648404800013
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectMetal-free catalyst
dc.subjectSulphur
dc.subjectNitrogen
dc.subjectMicroalgae
dc.subjectHydrogen
dc.subjectMethanolysis
dc.titleSulphur and nitrogen-doped metal-free microalgal carbon catalysts for very active dehydrogenation of sodium borohydride in methanol
dc.typeArticle

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