Prisms-built VO_(2)(M)micro-nanostructures with narrow hysteresis width of 2.7℃were successfully synthesized using V_(2)O_(5)-H_(2)C_(2)O_(4)-H2O system by one-pot hydrothermal approach.The structure,composition,phas...Prisms-built VO_(2)(M)micro-nanostructures with narrow hysteresis width of 2.7℃were successfully synthesized using V_(2)O_(5)-H_(2)C_(2)O_(4)-H2O system by one-pot hydrothermal approach.The structure,composition,phase transition and optical properties were characterized by XRD,SEM,DSC,and variable-temperature UV-vis.The results revealed the prism had well-defined six facets and entire smooth surface with lengths of about 500 nm and thicknesses of around 100 nm.Several prisms were connected to each other through the apical growth.The prismatic VO_(2)(M)showed excellent phase transition and optical switching properties that would be beneficial for highly sensitive electrical/optical devices or other applications.The possible formation mechanism of prismatic VO_(2)(M)was proposed via time-dependent SEM images and XRD patterns.Furthermore,the influence of the amount of H_(2)O on the final product was discussed in detail.展开更多
V-Cr-Al-O nanospheres were successfully synthesized using V2O5, Al(OH)3, CrO3, and H2C2O4·H2O as the starting materials by a facile one-pot hydrothermal approach. Several techniques containing X-ray powder diffra...V-Cr-Al-O nanospheres were successfully synthesized using V2O5, Al(OH)3, CrO3, and H2C2O4·H2O as the starting materials by a facile one-pot hydrothermal approach. Several techniques containing X-ray powder diffraction, hydrogen temperature programmed reduction, scanning electron microscopy were used to characterize the composition, morphology and redox property of V-Cr-Al-O nanospheres. The catalytic behavior of prepared nanospheres on the thermal decomposition of AP was investigated by the thermogravimetric analysis and differential thermal analysis(TG/DTA). The experimental results show that the thermal decomposition temperature of AP in the presence of V-Cr-Al-O nanospheres is to 395 ℃(decreased by 35 ℃), which proves better catalyst for the thermal decomposition of AP.展开更多
基金supported by the Hubei Provincial Department of Education(B2020129)Scientific Research Foundation(HS2020RC021)。
文摘Prisms-built VO_(2)(M)micro-nanostructures with narrow hysteresis width of 2.7℃were successfully synthesized using V_(2)O_(5)-H_(2)C_(2)O_(4)-H2O system by one-pot hydrothermal approach.The structure,composition,phase transition and optical properties were characterized by XRD,SEM,DSC,and variable-temperature UV-vis.The results revealed the prism had well-defined six facets and entire smooth surface with lengths of about 500 nm and thicknesses of around 100 nm.Several prisms were connected to each other through the apical growth.The prismatic VO_(2)(M)showed excellent phase transition and optical switching properties that would be beneficial for highly sensitive electrical/optical devices or other applications.The possible formation mechanism of prismatic VO_(2)(M)was proposed via time-dependent SEM images and XRD patterns.Furthermore,the influence of the amount of H_(2)O on the final product was discussed in detail.
基金Funded by the National Natural Science Foundation of China(51572201)
文摘V-Cr-Al-O nanospheres were successfully synthesized using V2O5, Al(OH)3, CrO3, and H2C2O4·H2O as the starting materials by a facile one-pot hydrothermal approach. Several techniques containing X-ray powder diffraction, hydrogen temperature programmed reduction, scanning electron microscopy were used to characterize the composition, morphology and redox property of V-Cr-Al-O nanospheres. The catalytic behavior of prepared nanospheres on the thermal decomposition of AP was investigated by the thermogravimetric analysis and differential thermal analysis(TG/DTA). The experimental results show that the thermal decomposition temperature of AP in the presence of V-Cr-Al-O nanospheres is to 395 ℃(decreased by 35 ℃), which proves better catalyst for the thermal decomposition of AP.
