Iron Pyrite Nanocrystal Inks: Solvothermal Synthesis, Digestive Ripening, and Reaction Mechanism
| Autor: | Tara S. Yoder, Yongan Yang, G. Jeremy Leong, Jonathan Miorelli, Suneel Kodambaka, Doreen F. Molk, Jacqueline E. Cloud, Mark E. Eberhart, Matthew Tussing, Ryan M. Richards, Chilan Ngo |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
General Chemical Engineering Inorganic chemistry Solvothermal synthesis Dispersity chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy 0104 chemical sciences Crystallinity Colloid symbols.namesake Nanocrystal chemistry Transmission electron microscopy Materials Chemistry symbols Lithium 0210 nano-technology Raman spectroscopy |
| Zdroj: | Chemistry of Materials. 26:6743-6751 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/cm5030553 |
| Popis: | Colloidal iron pyrite nanocrystals (or FeS2 NC inks) are desirable as active materials in lithium ion batteries and photovoltaics and are particularly suitable for large-scale, roll-to-roll deposition or inkjet printing. However, to date, FeS2 NC inks have only been synthesized using the hot-injection technique, which requires air-free conditions and may not be desirable at an industrial scale. Here, we report the synthesis of monodisperse, colloidal, spherical, and phase-pure FeS2 NCs of 5.5 ± 0.3 nm in diameter via a scalable solvothermal method using iron diethyldithiocarbamate as the precursor, combined with a postdigestive ripening process. The phase purity and crystallinity are determined using X-ray diffraction, transmission electron microscopy, far-infrared spectroscopy, and Raman spectroscopy techniques. Through this study, a hypothesis has been verified that solvothermal syntheses can also produce FeS2 NC inks by incorporating three experimental conditions: high solubility of the precursor, effi... |
| Databáze: | OpenAIRE |
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