We have used V K-edge x-ray absorption spectroscopy to study local structures of bulk, nanoparticles and nanowires of V2O5. The extended x-ray absorption fine structure measurements show different local displacements in the three morphologically different V2O5 samples. It is found that the nanowires have a significantly ordered chain structure in comparison to the V2O5 bulk. In contrast, nanoparticles have larger interlayer disorder. The x-ray absorption near-edge structure spectra show different electronic structure that appears to be related with the local atomic disorder in the three V2O5 samples.
Distinct local structure of nanoparticles and nanowires of V2O5 probed by x-ray absorption spectroscopy / B., Joseph; A., Iadecola; Maugeri, Laura; M., Bendele; M., Okubo; H., Li; H., Zhou; T., Mizokawa; Saini, Naurang Lal. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 103:25(2013), p. 251910. [10.1063/1.4856855]
Distinct local structure of nanoparticles and nanowires of V2O5 probed by x-ray absorption spectroscopy
MAUGERI, LAURA;SAINI, Naurang Lal
2013
Abstract
We have used V K-edge x-ray absorption spectroscopy to study local structures of bulk, nanoparticles and nanowires of V2O5. The extended x-ray absorption fine structure measurements show different local displacements in the three morphologically different V2O5 samples. It is found that the nanowires have a significantly ordered chain structure in comparison to the V2O5 bulk. In contrast, nanoparticles have larger interlayer disorder. The x-ray absorption near-edge structure spectra show different electronic structure that appears to be related with the local atomic disorder in the three V2O5 samples.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
