Synthesis of nanocrystalline eskolaite via grimaldiite
| Autor: | Stjepko Krehula, Marko Robić, Svetozar Musić, Marijana Jurić, Mira Ristić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Biochemistry Industrial and Manufacturing Engineering law.invention chemistry.chemical_compound law Materials Chemistry Rhodamine B Calcination Aqueous solution General Chemistry 021001 nanoscience & nanotechnology Nanocrystalline material 0104 chemical sciences Grimaldiite Eskolaite HMTA Nanocrystallinity chemistry Chemical engineering engineering Photocatalysis Crystallite Hexamethylenetetramine 0210 nano-technology |
| DOI: | 10.1007/s11696-020-01338-4 |
| Popis: | Grimaldiite (α-CrOOH) was precipitated hydrothermally from the CrCl3 aqueous solution in the presence of hexamethylenetetramine (HMTA). The crystallite size of grimaldiite samples was estimated to be ~ 2 nm. Eskolaite (α-Cr2O3) was produced by the calcination of grimaldiite at 500 and 700 °C. FE-SEM images showed amorphous-like aggregates of grimaldiite due to very fine particles (crystallites), whereas eskolaite was in the form of sphere-like nanoparticles. Synthesized grimaldiite and eskolaite were used in the investigation of rhodamine B (RhB) degradation. The significant degradation percentage of RhB obtained by grimaldiite was explained as catalytic effect (in dark) and photocatalytic contribution (with illumination). |
| Databáze: | OpenAIRE |
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