Ionic liquid assisted sonochemical synthesis of NiS submicron particles
| Autor: | Nora A. Garcia-Gomez, Salomé M. de la Parra-Arciniega, Pablo Salinas-Estevané, Domingo I. Garcia-Gutierrez, Eduardo M. Sánchez |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Nickel sulfide Diffuse reflectance infrared fourier transform Scanning electron microscope Mechanical Engineering Analytical chemistry chemistry.chemical_element Condensed Matter Physics Sonochemistry Nickel chemistry.chemical_compound chemistry Mechanics of Materials Transmission electron microscopy Ionic liquid General Materials Science Spectroscopy Nuclear chemistry |
| Zdroj: | Materials Science in Semiconductor Processing. 23:7-13 |
| ISSN: | 1369-8001 |
| Popis: | A novel synthesis methodology is reported for the preparation of NiS submicron particles in a green solvent 1-butyl-3methylimidazolium tetrafluoroborate (BMImBF4) ionic liquid (IL), using ultrasonic sonochemical technique. Structural, morphological and optical properties of nickel sulfide powders were obtained by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and diffuse reflectance spectroscopy (DRS). Composition was corroborated by energy dispersive X-ray spectroscopy (EDXS), both in the SEM and in the TEM. Regular shape particles were obtained under high-intensity ultrasonic irradiation for 105 min from the reaction between nickel nitrate and thioacetamide in ethanol/BMImBF4 (80:20), respectively. After vacuum annealing treatment at 180 °C overnight, spherical crystalline NiS particles were observed. The powders showed a band gap of 0.74 eV. |
| Databáze: | OpenAIRE |
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