Effect of thermal annealing on the composition of Ge-Co nanostructure obtained by electrochemical deposition
| Autor: | Martynova, Irina, Gavrilin, Ilya |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.18721/jpm.153.139 |
| Popis: | Сobalt-based catalysts are one of the possible candidates for catalysts that accelerate the decomposition of water to produce energy. In this work, the one-dimension GeCo nanostructures have been prepared by electrochemical deposition in a three-electrode cell. The samples have been annealed in atmosphere at various temperature (300 ºC, 450 ºC, 600 ºC). Effect of thermal annealing on the composition of Ge-Co nanostructure has been studied. The morphology of the obtained Ge-Co nanostructures has been investigated using scanning electron microscopy The method of X-ray diffraction analysis has been used to investigate composition changes of Ge-Co. Diffractograms show the presence of Co2GeO4 catalyst at an annealing temperature of 600 ºC. The sample with this annealing temperature shows the best properties as oxygen evolution catalyst. В работе получены наноструктуры Ge-Co c помощью электрохимического осаждения. Исследовано влияние температурного отжига (300 °C, 450 °C, 600 °C) на фазовый состав этой структуры методом рентгеновского дифракционного анализа. Выявлено присутствие катализатора Co2GeO4 при температуре отжига в 600 °C. Образец при таком отжиге также показал наилучшие каталитические свойства. |
| Databáze: | OpenAIRE |
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