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Characterization of the ZnO-ZnS interface in THIOL-capped ZnO nanoparticles exhibiting anomalous magnetic properties

AuthorsGuglieri, C.; Chaboy, Jesús
Issue Date2010
PublisherAmerican Chemical Society
CitationJournal of Physical Chemistry C 114(46): 19629-19634 (2010)
AbstractThis 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.
Identifiersdoi: 10.1021/jp1074303
issn: 1932-7447
e-issn: 1932-7455
Appears in Collections:(ICMA) Artículos
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