以介孔二氧化硅(SBA-15)为硬模板, 钨酸钠(Na₂WO₄•2H₂O)为钨源, 在酸性条件下, 用改进的浸渍-还原法合成了具有纳米坑结构的单晶片状WO₃材料. 用X射线衍射(XRD)、能量扩散X射线(EDX)、扫描电子显微镜(SEM)、高分辨透射电镜(HRTEM)和紫外-可见光区透射光谱(UV-Vis)等手段对产物的组成、形貌和光学性能进行了表征. 结果表明, 获得的产物为带有纳米坑结构的单晶片状WO₃, 且在近紫外-可见光区具有较高的透射率. 此外, 随着煅烧温度的升高, WO₃由单斜相转变为单斜相与正交相的混合相, WO₃薄膜的紫外-可见光透射率随煅烧温度升高而升高.

Using tungstate (Na₂WO₄•2H₂O) and mesoporous silica dioxide (SBA-15) as tungsten raw material and hard template respectively, tungsten oxide nanoplates with nano-pits were successfully synthesized in the acidic condition by a modified dipping-reduction method. The composition, morphology and optical properties of as-prepared products were characterized by X-ray diffraction (XRD), energy dispersive X-ray (EDX), scanning electron microscope (SEM), high resolution transmission electron microscopy (HRTEM) and ultraviolet-visible transmission spectrum (UV-Vis). Results showed that the products were single crystal tungsten oxide nanoplates with nano-pits which had higher transmission rate in the near UV-visible region. Furthermore, The WO₃ thin films changed from the monoclinic to monoclinic phase and orthogonal phase with the increase of sintered temperature, and the UV-visible light transmittance increased with sintered temperature of WO₃ thin film.