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Título: | Characterization of the ZnO-ZnS interface in THIOL-capped ZnO nanoparticles exhibiting anomalous magnetic properties |
Autor: | Guglieri, C. CSIC; Chaboy, Jesús CSIC | Fecha de publicación: | 2010 | Editor: | American Chemical Society | Citación: | Journal of Physical Chemistry C 114(46): 19629-19634 (2010) | Resumen: | This work reports an X-ray absorption near-edge structure spectroscopy (XANES) study at the Zn K-edge in ZnO nanoparticles (NPs) capped with different organic molecules. The analysis of the XANES spectrum of NPs capped with dodecanethiol suggests that several Zn atoms bond to the S atoms of the capping molecule. Indeed, the comparison of the experimental XANES spectra and theoretical computations points out the existence of a ZnO-ZnS interface in which both ZnS and ZnO shows a wurtzite structure. These results support that the exotic magnetism observed in these capped ZnO NPs resides at the hybridized p band formed among Zn and the S bonding atoms in this interface, while the rest of the ZnO NPs behaves as a standard ZnO semiconductor. © 2010 American Chemical Society. | URI: | http://hdl.handle.net/10261/52460 | DOI: | 10.1021/jp1074303 | Identificadores: | doi: 10.1021/jp1074303 issn: 1932-7447 e-issn: 1932-7455 |
Aparece en las colecciones: | (ICMA) Artículos |
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