Phosphorus and oxygen doped carbon-based on Spirulina microalgae as efficient metal-free catalysts to obtain H2 from methanolysis of NaBH4

Saka, Cafer2024-12-242024-12-2420210360-31991879-3487https://doi.org/10.1016/j.ijhydene.2020.08.222https://hdl.handle.net/20.500.12604/6560Metal-free catalysts (SP-KOH-P) doped phosphorus and oxygen as a result of modification with H3PO4 to the surface of the activated carbon sample (SP-KOH) obtained by activation of KOH with Spirulina microalgae were used to obtain hydrogen (H-2) from methanolysis of NaBH4. The characteristic structure of SP-KOH-P and SP-KOH metal-free catalysts were examined by XRD, TEM, elemental analysis, FTIR, and ICP-MS. The effects of the amount of catalyst, NaBH4 concentration, reusability, and temperature on H-2 production rate from NaBH4 methanolysis reaction were investigated. The hydrogen production rate (HGR) obtained with 25 mg SP-KOH-P was found to be 19,500 mL min(-1) g(-1). The activation energy (Ea) value of SP-KOH-P metal-free catalyst sample was calculated as 38.79 kJ mol(-1). (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessMetal-free catalystsPhosphorusOxygenSpirulina microalgaeHydrogenMethanolysisPhosphorus and oxygen doped carbon-based on Spirulina microalgae as efficient metal-free catalysts to obtain H2 from methanolysis of NaBH4Article46537533762Q2WOS:000607467900019Q12-s2.0-8509865956710.1016/j.ijhydene.2020.08.222