利用溶胶-凝胶与分子模板法相结合，在高压静电场诱导分子模板作用下，成功制备了孔洞分布均匀的介孔 WO 3粉体。利用粉末 X 射线衍射仪、N2吸附-脱附比表面及孔径分析仪、傅立叶变换红外光谱仪(FT-IR)等测试手段，通过对样品的晶态结构、孔洞结构参数、透射光谱特性及化学键态结构的对比，详细研究了外加电场的作用时间对分子模板及 WO 3粉体材料微观结构的影响。实验结果表明，在2 kV/cm 的电场强度下处理2 h 所制得的粉体 WO 3有更发达的比表面积和气体通道。
The preparation of mesoporous tungsten trioxide from tungstic acid precursors with the addition of an organic stabilizer(block copolymer)via a sol-gel method was reported.Electric fields were used to direct the ori-entation of block copolymers nanostructures in solution.The samples have been structurally characterized by powder X-ray diffraction(XRD),N2 adsorption-desorption surface and pore size analyzer,Fourier transform in-frared spectrometer (FT-IR).The powder at suitable time consisted of larger surface volume ratio and small pore size.The optimal processing time was 2 h at electric field strength of 2 kV/cm.
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