V2O5 nano-sheets derived from bulk via a freeze-drying method

Abstract

Utilizing V2O5 powder as starting materials, Vanadium pentoxide (V2O5) nano-sheets were prepared via a first freeze-drying process and following annealing treatment. The phase structure and morphology of as-achieved V2O5 nano-sheets were characterized by powder X-ray diffraction and scanning electron microscopy, respectively. These results demonstrated that V2O5 nano-sheets can be successfully synthesized within the selected region of annealing temperature, and the size and thickness of as-obtained V2O5 nano-sheets were closely associated with the annealing temperature. The catalytic property of V2O5 nano-sheets toward the thermal decomposition of ammonium perchlorate (abbreviated as AP) was assessed. The results indicated that the optimal catalytic property was achieved with V2O5 nano-sheets annealed at 400 °C, which can get the decomposition temperature of AP reduced by 28 °C.