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dc.creatorBarudžija, Tanja
dc.creatorCvjeticanin, Nikola
dc.creatorBajuk-Bogdanović, Danica V.
dc.creatorMojovic, Milos
dc.creatorMitrić, Miodrag
dc.date.accessioned2018-03-01T17:55:13Z
dc.date.available2018-03-01T17:55:13Z
dc.date.issued2017
dc.identifier.issn0925-8388 (print)
dc.identifier.issn1873-4669 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/1777
dc.description.abstractRaman scattering (RS), Fourier transform infrared (FTIR) and electron paramagnetic resonance (EPR) spectroscopic measurements on beta-MnO2 and alpha-KxMnO2 nanorods were performed. The infrared spectrum of beta-MnO2 is sensitive towards the particle sizes, while the Raman spectrum is sensitive towards the presence of nonstoichiometric and disordered MnO2-delta on the surface of nanorods. EPR measurements show the appearance of two types of Mn4+ ions having different local environment: (i) Mn4+ ions in Mn4+-rich environment and (ii) Mn4+ ions in mixed-valence Mn4+/Mn3+ environment that match up with region of nonstoichiometric MnO2-delta. Observed bands in vibrational spectra of tetragonal hollanditetype alpha-KxMnO(2) are considered to be mainly due to the vibration modes of Mn-O frameworks. The EPR spectra of alpha-KxMnO(2) nanorods contain two signals that can be attributed to Mn4+ ions in Mn4+-rich environment and Mn4+ ions in mixed-valence Mn4+/Mn3+ environment close to K+ ions. (C) 2017 Elsevier B.V. All rights reserved.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45015/RS//
dc.rightsrestrictedAccessen
dc.sourceJournal of Alloys and Compoundsen
dc.subjectManganese dioxide materialsen
dc.subjectRaman scattering spectroscopyen
dc.subjectInfrared spectroscopyen
dc.subjectElectron paramagnetic resonanceen
dc.subjectX-ray diffractionen
dc.titleVibrational and electron paramagnetic resonance spectroscopic studies of beta-MnO2 and alpha-KxMnO(2) nanorodsen
dc.typearticleen
dcterms.abstractБајук-Богдановиц, Даница; Баруджија Тања; Цвјетицанин, Никола; Мојовиц, Милос; Митрић Миодраг;
dc.citation.volume728
dc.citation.spage259
dc.citation.epage270
dc.identifier.wos000412818600029
dc.identifier.doi10.1016/j.jallcom.2017.09.015
dc.identifier.scopus2-s2.0-85028743086


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