Academic Journal
Interplay of Solid–Liquid Interactions and Anisotropic Aggregation in Solution: The Case Study of γ-AlOOH Crystallites
| العنوان: | Interplay of Solid–Liquid Interactions and Anisotropic Aggregation in Solution: The Case Study of γ-AlOOH Crystallites |
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| المؤلفون: | Valette, Audrey, Corral Valero, Manuel, Lefèvre, Grégory, Vallée, Christophe, Digne, Mathieu, Humbert, Séverine, Chanéac, Corinne, Durupthy, Olivier |
| المساهمون: | Novel Advanced Nano-Objects (LCMCP-NANO), Matériaux Hybrides et Nanomatériaux (LCMCP-MHN), Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), IFP Energies nouvelles (IFPEN), Institut de Recherche de Chimie Paris (IRCP), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 1932-7447. |
| بيانات النشر: | HAL CCSD American Chemical Society |
| سنة النشر: | 2021 |
| المجموعة: | IFP Énergies nouvelles: HAL-IFPEN |
| مصطلحات موضوعية: | Nanoparticles, Aggregation, Transmission electron microscopy, Diffraction, Nanorods, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, [SDE.ES]Environmental Sciences/Environment and Society |
| الوصف: | International audience ; The development of original nanoparticle size and shape requires a detailed knowledge and rationalization of the formation mechanism. A consolidated mechanism of γ-AlOOH boehmite nanorod formation in aqueous hydrothermal conditions is proposed based on an advanced characterization of the final product, kinetic studies, and surface energy calculations. Boehmite nanorods with a width of about 10 nm and more than 100 nm in length are obtained in slightly acidic conditions from Al(III) molecular precursors at temperature higher than 150 °C. The identification of protoboehmite as an intermediate in the kinetic study combined with the low solubility of aluminum in reacting conditions and the presence of stacking defects in the rods is indicative of an aggregation mechanism. Electron diffraction studies show that the crystallites are oriented in the nanorods with a [001] preferential growth direction. Using DFT calculations, we demonstrated that the nanorod morphology is not the expected thermodynamically stable one in these experimental conditions. An explanation of the oriented aggregation of primary particles is proposed based on an eased depletion of the solvation water molecules of the (001) surface compared to the other surfaces. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-03561032; https://hal.sorbonne-universite.fr/hal-03561032; https://hal.sorbonne-universite.fr/hal-03561032/document; https://hal.sorbonne-universite.fr/hal-03561032/file/Valette2021.pdf |
| DOI: | 10.1021/acs.jpcc.1c08629 |
| الاتاحة: | https://hal.sorbonne-universite.fr/hal-03561032 https://hal.sorbonne-universite.fr/hal-03561032/document https://hal.sorbonne-universite.fr/hal-03561032/file/Valette2021.pdf https://doi.org/10.1021/acs.jpcc.1c08629 |
| Rights: | http://creativecommons.org/licenses/by-nc/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.4A3D0305 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.jpcc.1c08629 |
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