| DOI | Trouver le DOI : https://doi.org/10.1557/jmr.2015.150 |
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| Auteur | Rechercher : Karim, Mohammad Rezaul; Rechercher : Bhuiyan, Mohammad Tauhidul Islam; Rechercher : Dar, Mushtaq Ahmad; Rechercher : Seikh, Asiful Hossain; Rechercher : Shar, Muhammad Ali; Rechercher : Zaman, Mohammed Badruz1; Rechercher : Lee, Chul Jae; Rechercher : Kim, Hee Jin; Rechercher : Lee, Mu Sang |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Sujet | Crystalline materials; Crystallite size; Dielectric properties; Dissolution; Metals; Microporosity; MOS devices; Nanoparticles; Nanostructures; Semiconductor materials; Synthesis (chemical); X ray diffraction; Dissolution-reprecipitation; Flower-like structures; High specific surface area; Interconnected network; Metal oxide semiconductor; Rutile TiO; Synthesis and characterizations; Transmission electron micrograph; Oxide minerals |
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| Résumé | Rutile nanoparticles have been synthesized by acid hydrolysis of titanium isopropoxide by low-temperature dissolution-reprecipitation process. High-resolution transmission electron micrographs of the rutile colloidal solution show needle-shaped rutile nanoparticles with the dimensions of 10-30 nm in diameter and 100-150 nm in length. X-ray diffraction (XRD) data show the existence of only the rutile polymorph in TiO<inf>2</inf> powder with a crystallite size of 11.3 nm. The dielectric constant of rutile nanoparticles has been found to be 57 at 10 MHz AC frequency and DC conductance as 2.3 × 10-6 S/cm. Transmission electron micrographs and XRD data analysis imply that the rutile crystallites are self-organized in a regular fashion to produce multilayer three-dimensional linear clusters. The clusters have been found to be microporous (average porosity 1.4 nm) with high specific surface area (132.2 m2/g). At higher concentration, the clusters aggregate to produce interconnected network of star- or flower-like structures. This organized crystalline microporous metal-oxide semiconductor might find various practical applications. |
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| Date de publication | 2015-06-28 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21275655 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 68f1e0b4-14a6-49c0-a34a-1c8cc289d3f6 |
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| Enregistrement créé | 2015-07-14 |
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| Enregistrement modifié | 2020-04-22 |
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