Influence of low-spin Co3+ for high-spin Fe3+ substitution on the structural, magnetic, optical and catalytic properties of hematite (α-Fe2O3) nanorods
Само за регистроване кориснике
2021
Аутори
Popov, NinaBošković, Marko
Perović, Marija
Németh, Zoltán
Wang, Junhu
Kuang, Zhichong
Reissner, Michael
Kuzmann, Ernő
Homonnay, Zoltán
Kubuki, Shiro
Marciuš, Marijan
Ristić, Mira
Musić, Svetozar
Stanković, Dalibor
Krehula, Stjepko
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Pure hematite nanorods and very long and thin cobalt-doped hematite nanorods (nanoneedles) were prepared by a combined precipitation and annealing method. The influence of the level of cobalt doping on different properties of hematite nanorods was investigated. Incorporation of cobalt in the form of low-spin Co3+ ions into the structure of hematite by substitution for high-spin Fe3+ ions was proved by determination of a significant unit cell contraction by powder X-ray diffraction (PXRD) and characteristic positions of the absorption edge in X-ray absorption near edge structure (XANES) spectra and peaks in X-ray emission (XES) spectra. Cobalt doping caused a gradual elongation and thinning of hematite nanorods – very long and thin 1D nanoparticles (nanoneedles) were formed in the presence of 10 and 12 mol% Co. Magnetic measurements showed a strong increase in low-temperature remanent magnetization and coercivity upon cobalt doping, as well as a disappearance of the Morin transition, wh...ich was also confirmed by Mössbauer spectroscopy. Cobalt doping significantly affected optical properties of hematite nanorods – absorption in the visible and NIR ranges increased, which was accompanied by narrowing of the optical band gap. Compared with pure hematite nanorods cobalt-doped hematite nanoneedles showed a significantly better electrocatalytic activity for the oxygen evolution reaction (OER).
Кључне речи:
Hematite / Low-spin Co / Morin transition / Mössbauer spectroscopy / NanorodsИзвор:
Journal of Physics and Chemistry of Solids, 2021, 152, 109929-Издавач:
- Elsevier
Финансирање / пројекти:
- ‘Lendület’ (Momentum) Program of the Hungarian Academy of Sciences (LP2013-59)
- National Research, Development and Innovation Fund (NKFIH FK 124460).
- Croatian Science Foundation (grant number IP-2016-06-8254)
- Bilateral Croatian-Serbian and Croatian-Chinese scientific projects
DOI: 10.1016/j.jpcs.2020.109929
ISSN: 0022-3697
WoS: 000634934300005
Scopus: 2-s2.0-85099273583
URI
https://www.sciencedirect.com/science/article/pii/S0022369720328298https://cherry.chem.bg.ac.rs/handle/123456789/4457
Колекције
Институција/група
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Popov, Nina AU - Bošković, Marko AU - Perović, Marija AU - Németh, Zoltán AU - Wang, Junhu AU - Kuang, Zhichong AU - Reissner, Michael AU - Kuzmann, Ernő AU - Homonnay, Zoltán AU - Kubuki, Shiro AU - Marciuš, Marijan AU - Ristić, Mira AU - Musić, Svetozar AU - Stanković, Dalibor AU - Krehula, Stjepko PY - 2021 UR - https://www.sciencedirect.com/science/article/pii/S0022369720328298 UR - https://cherry.chem.bg.ac.rs/handle/123456789/4457 AB - Pure hematite nanorods and very long and thin cobalt-doped hematite nanorods (nanoneedles) were prepared by a combined precipitation and annealing method. The influence of the level of cobalt doping on different properties of hematite nanorods was investigated. Incorporation of cobalt in the form of low-spin Co3+ ions into the structure of hematite by substitution for high-spin Fe3+ ions was proved by determination of a significant unit cell contraction by powder X-ray diffraction (PXRD) and characteristic positions of the absorption edge in X-ray absorption near edge structure (XANES) spectra and peaks in X-ray emission (XES) spectra. Cobalt doping caused a gradual elongation and thinning of hematite nanorods – very long and thin 1D nanoparticles (nanoneedles) were formed in the presence of 10 and 12 mol% Co. Magnetic measurements showed a strong increase in low-temperature remanent magnetization and coercivity upon cobalt doping, as well as a disappearance of the Morin transition, which was also confirmed by Mössbauer spectroscopy. Cobalt doping significantly affected optical properties of hematite nanorods – absorption in the visible and NIR ranges increased, which was accompanied by narrowing of the optical band gap. Compared with pure hematite nanorods cobalt-doped hematite nanoneedles showed a significantly better electrocatalytic activity for the oxygen evolution reaction (OER). PB - Elsevier T2 - Journal of Physics and Chemistry of Solids T2 - Journal of Physics and Chemistry of SolidsJournal of Physics and Chemistry of Solids T1 - Influence of low-spin Co3+ for high-spin Fe3+ substitution on the structural, magnetic, optical and catalytic properties of hematite (α-Fe2O3) nanorods VL - 152 SP - 109929 DO - 10.1016/j.jpcs.2020.109929 ER -
@article{ author = "Popov, Nina and Bošković, Marko and Perović, Marija and Németh, Zoltán and Wang, Junhu and Kuang, Zhichong and Reissner, Michael and Kuzmann, Ernő and Homonnay, Zoltán and Kubuki, Shiro and Marciuš, Marijan and Ristić, Mira and Musić, Svetozar and Stanković, Dalibor and Krehula, Stjepko", year = "2021", abstract = "Pure hematite nanorods and very long and thin cobalt-doped hematite nanorods (nanoneedles) were prepared by a combined precipitation and annealing method. The influence of the level of cobalt doping on different properties of hematite nanorods was investigated. Incorporation of cobalt in the form of low-spin Co3+ ions into the structure of hematite by substitution for high-spin Fe3+ ions was proved by determination of a significant unit cell contraction by powder X-ray diffraction (PXRD) and characteristic positions of the absorption edge in X-ray absorption near edge structure (XANES) spectra and peaks in X-ray emission (XES) spectra. Cobalt doping caused a gradual elongation and thinning of hematite nanorods – very long and thin 1D nanoparticles (nanoneedles) were formed in the presence of 10 and 12 mol% Co. Magnetic measurements showed a strong increase in low-temperature remanent magnetization and coercivity upon cobalt doping, as well as a disappearance of the Morin transition, which was also confirmed by Mössbauer spectroscopy. Cobalt doping significantly affected optical properties of hematite nanorods – absorption in the visible and NIR ranges increased, which was accompanied by narrowing of the optical band gap. Compared with pure hematite nanorods cobalt-doped hematite nanoneedles showed a significantly better electrocatalytic activity for the oxygen evolution reaction (OER).", publisher = "Elsevier", journal = "Journal of Physics and Chemistry of Solids, Journal of Physics and Chemistry of SolidsJournal of Physics and Chemistry of Solids", title = "Influence of low-spin Co3+ for high-spin Fe3+ substitution on the structural, magnetic, optical and catalytic properties of hematite (α-Fe2O3) nanorods", volume = "152", pages = "109929", doi = "10.1016/j.jpcs.2020.109929" }
Popov, N., Bošković, M., Perović, M., Németh, Z., Wang, J., Kuang, Z., Reissner, M., Kuzmann, E., Homonnay, Z., Kubuki, S., Marciuš, M., Ristić, M., Musić, S., Stanković, D.,& Krehula, S.. (2021). Influence of low-spin Co3+ for high-spin Fe3+ substitution on the structural, magnetic, optical and catalytic properties of hematite (α-Fe2O3) nanorods. in Journal of Physics and Chemistry of Solids Elsevier., 152, 109929. https://doi.org/10.1016/j.jpcs.2020.109929
Popov N, Bošković M, Perović M, Németh Z, Wang J, Kuang Z, Reissner M, Kuzmann E, Homonnay Z, Kubuki S, Marciuš M, Ristić M, Musić S, Stanković D, Krehula S. Influence of low-spin Co3+ for high-spin Fe3+ substitution on the structural, magnetic, optical and catalytic properties of hematite (α-Fe2O3) nanorods. in Journal of Physics and Chemistry of Solids. 2021;152:109929. doi:10.1016/j.jpcs.2020.109929 .
Popov, Nina, Bošković, Marko, Perović, Marija, Németh, Zoltán, Wang, Junhu, Kuang, Zhichong, Reissner, Michael, Kuzmann, Ernő, Homonnay, Zoltán, Kubuki, Shiro, Marciuš, Marijan, Ristić, Mira, Musić, Svetozar, Stanković, Dalibor, Krehula, Stjepko, "Influence of low-spin Co3+ for high-spin Fe3+ substitution on the structural, magnetic, optical and catalytic properties of hematite (α-Fe2O3) nanorods" in Journal of Physics and Chemistry of Solids, 152 (2021):109929, https://doi.org/10.1016/j.jpcs.2020.109929 . .