Novel TixSn1-xO2 (0.3á<áxá<á0.9) nanostructured oxides for gas sensing, have been synthesized and characterized through a great variety of investigation techniques, such as electron microscopy, X-ray diffraction, specific surface area measurements, UV-vis and IR spectroscopies, photoluminescence emission spectra and finally electrical measurements. All structural investigations showed solid solutions of the two single oxides; only the oxide with xá=á0.7 showed a beginning of spinodal decomposition revealed by XRD. Surprisingly, the samples with xá=á0.3 and 0.5 exhibited carbon monoxide response much higher than for pure SnO2. Investigations on this point, performed through spectroscopic measurements in the presence of CO, suggest a different behaviour of the solid solutions from the single oxides
(Ti, Sn)O2 binary solid solution for gas sensing: spectroscopic, optical and transport properties
SETARO, ANTONIO
2008-01-01
Abstract
Novel TixSn1-xO2 (0.3á<áxá<á0.9) nanostructured oxides for gas sensing, have been synthesized and characterized through a great variety of investigation techniques, such as electron microscopy, X-ray diffraction, specific surface area measurements, UV-vis and IR spectroscopies, photoluminescence emission spectra and finally electrical measurements. All structural investigations showed solid solutions of the two single oxides; only the oxide with xá=á0.7 showed a beginning of spinodal decomposition revealed by XRD. Surprisingly, the samples with xá=á0.3 and 0.5 exhibited carbon monoxide response much higher than for pure SnO2. Investigations on this point, performed through spectroscopic measurements in the presence of CO, suggest a different behaviour of the solid solutions from the single oxidesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
