Compressibility of Nanocrystalline TiO2 Anatase
Using high-resolution, synchrotron-based powder X-ray diffraction (XRD), we have studied the high-pressure behavior of the anatase phase of nanocrystalline TiO2 (nc-TiO2) under hydrostatic conditions. We find that for anatase with a grain size larger than ∼40 nm, the room-pressure bulk modulus K 0 r...
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| Veröffentlicht in: | Journal of physical chemistry. C 2012-10, Vol.116 (40), p.21635-21639 |
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| container_issue | 40 |
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| container_title | Journal of physical chemistry. C |
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| creator | Al-Khatatbeh, Yahya Lee, Kanani K. M Kiefer, Boris |
| description | Using high-resolution, synchrotron-based powder X-ray diffraction (XRD), we have studied the high-pressure behavior of the anatase phase of nanocrystalline TiO2 (nc-TiO2) under hydrostatic conditions. We find that for anatase with a grain size larger than ∼40 nm, the room-pressure bulk modulus K 0 remains constant at ∼200 GPa to within experimental uncertainties. An ∼15% decrease in K 0 is observed for grains that are ∼20 nm in size and remains unchanged for grains down to 6 nm in diameter, indicating a rapid increase in compressibility for nc-TiO2 anatase between 40 and 20 nm. |
| doi_str_mv | 10.1021/jp3075699 |
| format | Article |
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An ∼15% decrease in K 0 is observed for grains that are ∼20 nm in size and remains unchanged for grains down to 6 nm in diameter, indicating a rapid increase in compressibility for nc-TiO2 anatase between 40 and 20 nm.</description><identifier>ISSN: 1932-7447</identifier><identifier>EISSN: 1932-7455</identifier><identifier>DOI: 10.1021/jp3075699</identifier><language>eng</language><publisher>Columbus, OH: American Chemical Society</publisher><subject>Condensed matter: structure, mechanical and thermal properties ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Materials science ; Nanocrystalline materials ; Nanoscale materials and structures: fabrication and characterization ; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals ; Physics ; Structure of solids and liquids; crystallography</subject><ispartof>Journal of physical chemistry. 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| subjects | Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Physics Structure of solids and liquids crystallography |
| title | Compressibility of Nanocrystalline TiO2 Anatase |
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