Catalytic properties of vanadium diselenide: a comprehensive study on ıts electrocatalytic performance in alkaline, neutral, and acidic media

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buir.contributor.authorOkyay, Ali Kemal
dc.citation.epage8329en_US
dc.citation.issueNumber11en_US
dc.citation.spage8319en_US
dc.citation.volumeNumber2en_US
dc.contributor.authorGhobadi, T. G. U.en_US
dc.contributor.authorPatil, B.en_US
dc.contributor.authorKaradas, F.en_US
dc.contributor.authorOkyay, Ali Kemalen_US
dc.contributor.authorYilmaz, E.en_US
dc.date.accessioned2019-02-05T11:54:15Z
dc.date.available2019-02-05T11:54:15Z
dc.date.issued2017en_US
dc.departmentDepartment of Chemistryen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractHere, we report the synthesis of vanadium diselenide (VSe2) three-dimensional nanoparticles (NPs) and two-dimensional (2D) nanosheets (NSs) utilizing nanosecond pulsed laser ablation technique followed by liquid-phase exfoliation. Furthermore, a systematic study has been conducted on the effect of NP and NS morphologies of VSe2 in their catalytic activities toward oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) under alkaline, neutral, and acidic conditions. Research on VSe2 clearly demonstrates that these morphologies do not have a significant difference for ORR and OER; however, a drastic effect of morphology was observed for HER. The ORR activity of both NSs and NPs involves ∼2.85 numbers of electrons with the Tafel slope of 120 mV/dec in alkaline and neutral pH. In alkaline solution, NPs are proved to be an efficient catalyst for OER with an onset potential 1.5 V; however, for HER, NSs have a better onset potential of −0.25 V. Moreover, the obtained NPs have also better catalytic activity with a 400 mV anodic shift in the onset potential compared to NSs. These results provide a reference point for the future application of VSe2 in energy storage and conversion devices and mass production of other 2D materials.en_US
dc.identifier.doi10.1021/acsomega.7b01226en_US
dc.identifier.issn2470-1343
dc.identifier.urihttp://hdl.handle.net/11693/48884
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/acsomega.7b01226en_US
dc.source.titleACS Omegaen_US
dc.titleCatalytic properties of vanadium diselenide: a comprehensive study on ıts electrocatalytic performance in alkaline, neutral, and acidic mediaen_US
dc.typeArticleen_US

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Department of Chemistry
Department of Electrical and Electronics Engineering
Institute of Materials Science and Nanotechnology (UNAM)
Nanotechnology Research Center (NANOTAM)