Facile green synthesis of a novel NiO and its catalytic effect on methylene blue photocatalytic reduction and sodium borohydride hydrolysis

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dc.authoridBAYTAR, ORHAN/0000-0002-2915-202X
dc.contributor.authorBaytar, Orhan
dc.date.accessioned2024-12-24T19:28:19Z
dc.date.available2024-12-24T19:28:19Z
dc.date.issued2024
dc.departmentSiirt Üniversitesi
dc.description.abstractNiO nanoparticles were synthesized from pine cone extract by green synthesis method, which is a simple, cost-effective, environmentally friendly and sustainable method. The particle size of NiO nanoparticles was determined to be in the range of 10-25 nm by X-diffraction differential and transmission electron microscope analysis, and the bandgap energy of NiO nanoparticles was determined to be 2.66 eV. The catalytic effect of NiO nanoparticles in both microwave-assisted sodium borohydride hydrolysis and photocatalytic reduction of methylene blue was examined and it was determined that they had a high catalytic effect in both applications. It was determined that the hydrogen production rate in sodium borohydride hydrolysis was 1135 mL/g/min. The activation energy of sodium borohydride hydrolysis is 29.69 kJ/mol and 29.59 kJ/mol for the nth-order and Langmuir Hinshelwood kinetic models, respectively. In the photocatalytic reduction of methylene blue with NaBH4, it was determined that the reduction did not occur in the absence of a catalyst, but in the presence of the catalyst, the reduction occurred 98% in 3 min. It was determined that NiO nanoparticles were used five times in the photocatalytic reduction of methylene blue and the reduction efficiency for the fifth time was 93%. It was determined that the photocatalytic reduction of methylene blue was pseudo-first order and the rate constant was 1.63 s-1. It was determined that NiO nanoparticles synthesized by the environmentally friendly green synthesis method can be used as catalysts for two different applications.
dc.identifier.doi10.1080/15226514.2024.2338470
dc.identifier.endpage1592
dc.identifier.issn1522-6514
dc.identifier.issn1549-7879
dc.identifier.issue10
dc.identifier.pmid38634226
dc.identifier.scopus2-s2.0-85190996545
dc.identifier.scopusqualityQ1
dc.identifier.startpage1577
dc.identifier.urihttps://doi.org/10.1080/15226514.2024.2338470
dc.identifier.urihttps://hdl.handle.net/20.500.12604/7017
dc.identifier.volume26
dc.identifier.wosWOS:001205388900001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofInternational Journal of Phytoremediation
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectCatalyst
dc.subjectgreen synthesis
dc.subjectmethylene blue
dc.subjectNiO
dc.subjectreduction
dc.subjectsodium borohydride
dc.titleFacile green synthesis of a novel NiO and its catalytic effect on methylene blue photocatalytic reduction and sodium borohydride hydrolysis
dc.typeArticle

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