دورية أكاديمية
Synthesis and Properties of Ni-doped Goethite and Ni-doped Hematite Nanorods
| العنوان: | Synthesis and Properties of Ni-doped Goethite and Ni-doped Hematite Nanorods |
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| المؤلفون: | Krehula, Stjepko, Ristić, Mira, Mitar, Ivana, Wu, Chuchu, Li, Xuning, Jiang, Luhua, Wang, Junhu H., Sun, Gongquan, Zhang, Tao, Perović, Marija M., Bošković, Marko, Antić, Bratislav, Musić, Svetozar |
| المصدر: | Croatica Chemica Acta |
| سنة النشر: | 2018 |
| المجموعة: | VinaR Repository (Vinča Institute of Nuclear Sciences / University of Belgrade) |
| مصطلحات موضوعية: | alpha-FeOOH, alpha-Fe2O3, Ni doping, XRPD, Mossbauer spectroscopy, FE-SEM, OER |
| الوصف: | Ni-doped goethite (α-FeOOH) nanorods were synthesized from mixed Fe(III)-Ni(II) nitrate solutions with various Ni/(Ni+Fe) ratios (0, 5, 10, 20, 33 and 50 mol % Ni) by hydrothermal precipitation in a highly alkaline medium using the strong organic alkali, tetramethylammonium hydroxide (TMAH). Ni-doped hematite (α-Fe2O3) nanorods were obtained by calcination of Ni-doped goethite nanorods at 400 °C. The Ni 2+ -for-Fe 3+ substitution in goethite and hematite was confirmed by determination of the unit cell expansion (due to the difference in the ionic radii of Fe 3+ and Ni 2+ ) using XRPD and determination of the reduction of a hyperfine magnetic field (due to the difference in magnetic moments of Fe 3+ and Ni 2+ ) using Mössbauer spectroscopy. Single-phase goethite nanorods were found in samples containing 0 or 5 mol % Ni. A higher Ni content in the precipitation system (10 mol % or more) resulted in a higher Ni 2+ -for-Fe 3+ substitution in goethite, and larger Ni-doped goethite nanorods, though with the presence of low crystalline Ni-containing ferrihydrite and Ni ferrite (NiFe2O4) as additional phases. Significant changes in FT-IR and UV-Vis-NIR spectra of prepared samples were observed with increasing Ni content. Electrochemical measurements of samples showed a strong increase in oxygen evolution reaction (OER) electrocatalytic activity with increasing Ni content. © 2018 Croatian Chemical Society. All Rights Reserved. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0011-1643 1334-417X |
| العلاقة: | Croatian Science Foundation [IP-2016-06-825]; SAFU [KK.01.1.1.01.0001]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09030104]; Natural Science Foundation of China [21576258]; Natural Science Foundation of China [21476232]; Bilateral Croatian-Chinese scientific project “Iron oxide nanostructures for environmental and energy applications”; Bilateral Croatian-Serbian scientific project “Nanostructured iron oxides for environmental applications”; https://hrcak.srce.hr/file/309798Test; https://vinar.vin.bg.ac.rs/handle/123456789/8100Test; 000456043500011; 2-s2.0-85062707409; https://vinar.vin.bg.ac.rs//bitstream/id/11210/cca3402.pdfTest |
| DOI: | 10.5562/cca3402 |
| الإتاحة: | https://doi.org/10.5562/cca3402Test https://hrcak.srce.hr/file/309798Test https://vinar.vin.bg.ac.rs/handle/123456789/8100Test https://vinar.vin.bg.ac.rs//bitstream/id/11210/cca3402.pdfTest |
| حقوق: | openAccess ; https://creativecommons.org/licenses/by/4.0Test/ ; BY ; © 2018 Croatian Chemical Society |
| رقم الانضمام: | edsbas.59B1B560 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 00111643 1334417X |
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| DOI: | 10.5562/cca3402 |