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Published, Version of Record (VoR)Open Access via Drexel Libraries Read and Publish Program 2024CC BY V4.0, Open
Journal article
Investigation of γ‑Alumina Particle Size: The Role of Hydrogen Defects on Size Constraint
Journal of physical chemistry. C, v 128(21), pp 8803-8811
18 May 2024
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Abstract
The particle size of γ-alumina is prohibitively small, to such an extent that it has long presented a challenge to experimental characterization. The material is apparently not susceptible to Ostwald ripening, the reasons for which have been arcane. Herein, it is proposed that the material’s particle size may be constrained due to the energetic preference of hydrogen defects to be positioned at the surface rather than within the interior. This preference, combined with the larger ratio of surface area to volume possessed by smaller particles, results in the tiny crystal characteristic of γ-alumina. Computational modeling, enabled by a recent method of computing accurate surface energies for asymmetric slab models, is employed to investigate this hypothesis and suggests an explanation for the dearth of large single crystals of γ-alumina.
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Details
- Title
- Investigation of γ‑Alumina Particle Size: The Role of Hydrogen Defects on Size Constraint
- Creators
- Natalie M. Stuart - Drexel UniversityKarl Sohlberg (Corresponding Author) - Drexel University, Chemistry
- Publication Details
- Journal of physical chemistry. C, v 128(21), pp 8803-8811
- Publisher
- ACS Publications
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:001227988300001
- Scopus ID
- 2-s2.0-85193724704
- Other Identifier
- 991021887915304721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology