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Biotemplate Synthesis of Porous Ceria Fiber and Study on Its Catalytic Performance

机译：多孔二氧化铈纤维的生物模板合成及其催化性能的研究

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Hierarchical porous ceria with nanocrystalline was successfully synthesized using filter paper as biotemplate. Unique biomorphic micro-structures were characterized by Field Emission Scanning Electron Microscope (FESEM), transmission electron microscopy (TEM) and nitrogen absorption-desorption technique. The obtained ceria material showed the repetitious biomimetic structure consisting of fibre with diameter of ca. 1-3 urn and nanopores which had 2-4 nm apertures. The small crystallite diameter (6-8 nm) and the high specific surface area (71.3 m~2·g~(-1)) of porous CeO_2 were measured by wide-angle X-ray Diffraction (XRD), high resolution TEM (HRTEM) and the BET method. While the concentration of acid fuchsine was 20 mg/L, the porous sample had a higher decoloring rate in a shorter time than others. The decoloring rate can reach 100% after 200 min.
机译：以滤纸为模板，成功合成了具有纳米晶的层状多孔氧化铈。场发射扫描电子显微镜（FESEM），透射电子显微镜（TEM）和氮吸收-解吸技术表征了独特的生物形态微观结构。所获得的二氧化铈材料显示出重复的仿生结构，该仿生结构由直径为约3μm的纤维组成。 1-3个ur和具有2-4 nm孔径的纳米孔。通过广角X射线衍射（XRD），高分辨率TEM（XRD）测量了多孔CeO_2的微晶直径（6-8 nm）和高比表面积（71.3 m〜2·g〜（-1））。 HRTEM）和BET方法。酸性品红的浓度为20 mg / L时，多孔样品的脱色率比其他样品短。 200分钟后，脱色率可达到100％。

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