Hybrid approach to obtain high-quality BaMO3 perovskite nanocrystals
| Autor: | Jordi Martínez-Esaín, Natalia Chamorro, Teresa Puig, Xavier Obradors, Josep Ros, Susagna Ricart, Ramón Yáñez |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission, Generalitat de Catalunya |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Aqueous solution
Materials science Economies of agglomeration General Chemical Engineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Hybrid approach Ferroelectric phase-transition 01 natural sciences 0104 chemical sciences Crystal chemistry.chemical_compound chemistry Chemical engineering Nanocrystal Scientific method Barium titanate Barium-titanate 0210 nano-technology Perovskite (structure) Sol-gel routes Metal-oxides |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | A novel hybrid solvothermal approach for perovskite nanocrystal formation via accurate control of the hydrolytic process is reported. This new synthetic methodology sets a whole general route to successfully tune the sizes of high-quality BaMO3 (M = Ti4+, Zr4+, and Hf4+) perovskite nanocrystals. Purely cubic-phase nanocrystals (stable in alcohol media) were obtained using controlled water amounts, combining the well-known aqueous sol–gel process with the classic solvothermal method. Exhaustive optimizations revealed feasibility of a fast (1 hour) and reproducible synthesis with small variations in the crystal size or agglomeration parameters. The study also reveals water content as the pivotal factor to achieve this wide range of sizes through a controlled hydrolytic step. Finally, the study of the hydrolytic process made it possible to shed some light on mechanistic insights of this synthetic route. This work was supported by Spanish Ministry of Economy and Competitiveness through the “Severo Ochoa” Programme for Centres of Excellence in R&D (SEV-2015-0496), CONSOLIDER Excellence Network (MAT2015-68994-REDC), COACHSUPENERGY project (MAT2014-51778-C2-1-R, cofinanced by the European Regional Development Fund) and SUPERINKS project (RTC-2015-3640-3, cofinanced by the European Regional Development Fund). We also thank support from the European Union for EUROTAPES project (FP7-NMP-Large-2011-280432) and ULTRASUPERTAPE project (H2020 ERC-2014-ADG-669504) and from the Catalan Government with 2014-SGR-753 and Xarmae. The authors acknowledge the technical support of Servei de Microscópia, and Servei de Difracció de Raigs- X, all at the UAB, and Dr Judith Oró (Microscope Service) at the ICMAB-CSIC, Dr Guillaume Sauthier for his support in XPS analysis. NCG acknowledge the PIF predoctoral fellowship from the Universitat Autònoma de Barcelona. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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