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Free keywords:
A. Nanostructures;
B. Chemical synthesis;
C. Electron microscopy;
C. Raman spectroscopy;
D. Catalytic properties
Abstract:
Hollow CeVO4 nanospheres were obtained hydrothermally. ► The Ce4+/Ce3+ ratio and V4+ content in the nanostructures are greatly enhanced. ► Ce3+–Ce4+/V5+–V4+ coexist in the annealed nanospheres without phase separation. ► The samples exhibit a high selectivity for propylene in ODH reaction of propane. ► The presence of Ce4+ is crucial for the selectivity enhancement of the catalyst.