The use of superporous p(AAc (acrylic acid)) cryogels as support for Co and Ni nanoparticle preparation and as reactor in H2 production from sodium borohydride hydrolysis

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dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.contributor.authorŞahiner, Nurettin
dc.contributor.authorSeven, Fahriye
dc.date.accessioned2025-01-27T20:38:41Z
dc.date.available2025-01-27T20:38:41Z
dc.date.issued2014
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractHere, we report for the first time the use of p(AAc (p(acrylic acid)) cryogel for in situ metal nanoparticle preparation, and their use as a superporous reactor for H-2 generation from hydrolysis of NaBH4. Superporous p(AAc) cryogels and conventional hydrogels were prepared via free radical polymerization technique at low (-18 degrees C) and moderate (40 degrees C) temperatures, respectively. They were characterized by employing various methods such as swelling experiments, optical imaging, and SEM (Scanning Electron Microscopy) analysis. By reducing Co2+ and Ni2+ ions within p(AAc) cryogel and hydrogel matrices, the obtained Co and Ni metal nanoparticles were employed for H-2 generation from NaBH4 hydrolysis. Various factors such as porosity, metal type, temperature, and the amount of sodium hydroxide were investigated to determine their effects on hydrogen generation from NaBH4 hydrolysis. Activation energy (Ea), enthalpy (Delta Eta(#)) and entropy (Delta S-#) for NaBH4 hydrolysis by superporous p(AAc)-Co metal composites were 2935 kJ mol(-1),=36.85 kJ mol(-1), and 157.88 J mol(-1)K(-1), respectively. Cryogels showed better catalytic activity than conventional hydrogels in the hydrolysis reaction, and have a higher TOF (turnover frequency) value of 4.10 mol H-2 (mol catalyst min)(-1) compared to conventional hydrogels, due to its highly porous nature, short diffusion distances and fast response times. (C) 2014 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey [113T042]
dc.description.sponsorshipThis work is supported by the Scientific and Technological Research Council of Turkey (113T042).
dc.identifier.doi10.1016/j.energy.2014.04.031
dc.identifier.endpage179
dc.identifier.issn0360-5442
dc.identifier.issn1873-6785
dc.identifier.scopus2-s2.0-84902549122
dc.identifier.scopusqualityQ1
dc.identifier.startpage170
dc.identifier.urihttps://doi.org/10.1016/j.energy.2014.04.031
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23706
dc.identifier.volume71
dc.identifier.wosWOS:000338388000017
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofEnergy
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectCryogel-hydrogel
dc.subjectSuperporous-template
dc.subjectMetal nanoparticle-embedded cryogel composites
dc.subjectH-2 generation
dc.subjectHydrolysis
dc.titleThe use of superporous p(AAc (acrylic acid)) cryogels as support for Co and Ni nanoparticle preparation and as reactor in H2 production from sodium borohydride hydrolysis
dc.typeArticle

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