Sub-micrometric β-CoMoO4 rods: optical and piezochromic properties.
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BLANCO-GUTIERREZ, Veronica | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DEMOURGUES, Alain | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GAUDON, Manuel | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 1477-9226 | |
| dc.description.abstractEn | Sub-micrometric β-CoMoO4 rods have been obtained after thermal treatment of CoMoO4*H2O previously prepared by the precipitation method. The color of the sub-micrometric particles has been investigated through diffuse reflectance in the VIS-IR range and the spectra have been compared with those corresponding to samples with larger isotropic particles. The O(2-)→Mo(6+) charge transfer band shifts to the UV region with decreasing the particle size, revealing a more covalent bond. This can be justified under the consideration of a higher proportion of surface-atoms in sub-micrometric particles that present lower coordination number. The piezochromic behavior of the sub-micrometric β-CoMoO4 rods has been investigated. As the sub-micrometric size of the particles stabilizes the low-coordination phase (β-phase), the transition pressure to the α-phase is higher in comparison with that corresponding to larger particles. In addition, it was not possible to obtain a 100% transformation of the β-phase in the sample with sub-micrometric particles. A similar temperature influence on the transition pressure regardless of particle size has also been observed. | |
| dc.language.iso | en | |
| dc.publisher | Royal Society of Chemistry | |
| dc.subject.en | Spectrometry | |
| dc.subject.en | Sub-micrometric particles | |
| dc.subject.en | Color | |
| dc.subject.en | Cobalt molybdate | |
| dc.title.en | Sub-micrometric β-CoMoO4 rods: optical and piezochromic properties. | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1039/c3dt51656c | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | Dalton Transactions | |
| bordeaux.page | 13622-13627 | |
| bordeaux.volume | 42 | |
| bordeaux.issue | 37 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00861792 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00861792v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Dalton%20Transactions&rft.date=2013&rft.volume=42&rft.issue=37&rft.spage=13622-13627&rft.epage=13622-13627&rft.eissn=1477-9226&rft.issn=1477-9226&rft.au=BLANCO-GUTIERREZ,%20Veronica&DEMOURGUES,%20Alain&GAUDON,%20Manuel&rft.genre=article |
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