Electron paramagnetic resonance of organic and inorganic centers in γ-irradiated natural sepiolite minerals

Rahmi Köseoǧlu; Fevzi Köksal; Mehmet Akkurt; Emin Çiftçi

doi:10.1515/zna-2006-7-816

Electron paramagnetic resonance of organic and inorganic centers in γ-irradiated natural sepiolite minerals

Rahmi Köseoǧlu^*, Fevzi Köksal, Mehmet Akkurt, Emin Çiftçi

^*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

Özet

Natural sepiolite minerals and their γ-irradiated forms were investigated by electron paramagnetic resonance (EPR) at room temperature and at 113 K. The EPR signals in powders of natural sepiolite were observed due to clusters of Fe³⁺ ions. The paramagnetic centers produced by γ-irradiation of natural sepiolite minerals were attributed to the ĊH₃ at room temperature and ṠO₂^- and ṠO₃^- radicals at 113 K. These centers were found to be perfectly observable above 20 mW microwave power. The g values of all paramagnetic centers have been measured and the A values of some of them have been reported. The results were consistent with the literature data for similar paramagnetic centers.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	413-417
Sayfa sayısı	5
Dergi	Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Hacim	61
Basın numarası	7-8
DOI'lar	https://doi.org/10.1515/zna-2006-7-816
Yayın durumu	Yayınlandı - 2006
Harici olarak yayınlandı	Evet

Finansman

This work was supported by the Erciyes University Research Fund, Project No. FBA-04-24.

Finansörler	Finansör numarası
Erciyes University Research Fund	FBA-04-24

Belgeye Erişim

10.1515/zna-2006-7-816

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Electron paramagnetic resonance of organic and inorganic centers in γ-irradiated natural sepiolite minerals",

abstract = "Natural sepiolite minerals and their γ-irradiated forms were investigated by electron paramagnetic resonance (EPR) at room temperature and at 113 K. The EPR signals in powders of natural sepiolite were observed due to clusters of Fe3+ ions. The paramagnetic centers produced by γ-irradiation of natural sepiolite minerals were attributed to the ĊH3 at room temperature and ṠO2- and ṠO3- radicals at 113 K. These centers were found to be perfectly observable above 20 mW microwave power. The g values of all paramagnetic centers have been measured and the A values of some of them have been reported. The results were consistent with the literature data for similar paramagnetic centers.",

keywords = "EPR, Paramagnetic Centers, Sepiolite Minerals, γ-Irradiation",

author = "Rahmi K{\"o}seoǧlu and Fevzi K{\"o}ksal and Mehmet Akkurt and Emin {\c C}ift{\c c}i",

year = "2006",

doi = "10.1515/zna-2006-7-816",

language = "English",

volume = "61",

pages = "413--417",

journal = "Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences",

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TY - JOUR

T1 - Electron paramagnetic resonance of organic and inorganic centers in γ-irradiated natural sepiolite minerals

AU - Köseoǧlu, Rahmi

AU - Köksal, Fevzi

AU - Akkurt, Mehmet

AU - Çiftçi, Emin

PY - 2006

Y1 - 2006

N2 - Natural sepiolite minerals and their γ-irradiated forms were investigated by electron paramagnetic resonance (EPR) at room temperature and at 113 K. The EPR signals in powders of natural sepiolite were observed due to clusters of Fe3+ ions. The paramagnetic centers produced by γ-irradiation of natural sepiolite minerals were attributed to the ĊH3 at room temperature and ṠO2- and ṠO3- radicals at 113 K. These centers were found to be perfectly observable above 20 mW microwave power. The g values of all paramagnetic centers have been measured and the A values of some of them have been reported. The results were consistent with the literature data for similar paramagnetic centers.

AB - Natural sepiolite minerals and their γ-irradiated forms were investigated by electron paramagnetic resonance (EPR) at room temperature and at 113 K. The EPR signals in powders of natural sepiolite were observed due to clusters of Fe3+ ions. The paramagnetic centers produced by γ-irradiation of natural sepiolite minerals were attributed to the ĊH3 at room temperature and ṠO2- and ṠO3- radicals at 113 K. These centers were found to be perfectly observable above 20 mW microwave power. The g values of all paramagnetic centers have been measured and the A values of some of them have been reported. The results were consistent with the literature data for similar paramagnetic centers.

KW - EPR

KW - Paramagnetic Centers

KW - Sepiolite Minerals

KW - γ-Irradiation

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U2 - 10.1515/zna-2006-7-816

DO - 10.1515/zna-2006-7-816

M3 - Article

AN - SCOPUS:33748602366

SN - 0932-0784

VL - 61

SP - 413

EP - 417

JO - Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences

JF - Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences

IS - 7-8

ER -

Electron paramagnetic resonance of organic and inorganic centers in γ-irradiated natural sepiolite minerals

Özet

Finansman

Belgeye Erişim

Diğer Dosyalar ve Linkler

Parmak izi

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