One-pot Synthesis and Formation Mechanism of Prisms-built V02(M)with Hypersensitive Phase-transition Hysteresis

• 作者: LI Xiong-Jian YANG Shui-Jin
• 来源期刊: 结构化学
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: materials structural chemistry
• 页码范围: 999-1004
• 页数: 6页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2011-3086

摘要

Prisms-built V02(M)micro-nanostructures with narrow hysteresis width of 2.7℃were successfully synthesized using V2O5-H2C2O4-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 V02(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 V02(M)was proposed via time-dependent SEM images and XRD patterns.Furthermore,the influence of the amount of H2O on the final product was discussed in detail.