Applied Surface Science, Vol.389, 112-117, 2016
Dimension meditated optic and catalytic performance over vanadium pentoxides
Morphologies and sizes of V2O5 had crucial effect on their optic and catalytic performance. Diverse dimensional V2O5 were successfully synthesized by the combination of a hydrothermal and post heat treatment method. The as-obtained samples were characterized by X-ray power diffraction, scanning electron microscopy, transmission electron microscopy and Raman spectra. Moreover, the optic properties of diverse dimensional V2O5 were examined by Fourier transform imaging spectrometer and UV-vis-spectrophotometer. It showed that the IR transmittance of nanowire (at 1019 cm(-1) is 85%) and UV absorbance of microflowers (at 480 nm) were high. Furthermore, the catalytic properties of diverse dimensional V2O5 on the thermal decomposition of ammonium perchlorate were evaluated and compared by Thermo-Gravimetric Analysis and Differential Scanning Calorimetry. Moreover, the best catalytic performance was obtained with the morphology of nanowire. It showed the thermal decomposition temperatures of AP with nanowire, microflowers and microsphere were reduced to 373 degrees C, 382 degrees C and 376 degrees C (decreased by 52 degrees C, 43 degrees C and 49 degrees C). (C) 2016 Elsevier B.V. All rights reserved.