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首页> 外文期刊>International Journal of Photoenergy >Fabrication and Characteristics of MacroporousTiO2Photocatalyst
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Fabrication and Characteristics of MacroporousTiO2Photocatalyst

机译：Macroporoustio2photocatalyst的制造和特征

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摘要

Macroporous TiO2photocatalyst was synthesized by a facile nanocasting method using polystyrene (PS) spherical particles as the hard template. The synthesized photocatalyst was characterized by transmission electron microscope (TEM), scanning electron microscopy (SEM), thermogravimetry-differential thermogravimetry (TG-DTG), X-ray diffraction (XRD), and N2-sorption. TEM, SEM, and XRD characterizations confirmed that the macroporous TiO2photocatalyst is composed of anatase phase. The high specific surface area of 87.85 m2/g can be achieved according to the N2-sorption analysis. Rhodamine B (RhB) was chosen as probe molecule to evaluate the photocatalytic activity of the TiO2catalysts. Compared with the TiO2materials synthesized in the absence of PS spherical template, the macroporous TiO2photocatalyst sintered at 500°C exhibits much higher activity on the degradation of RhB under the UV irradiation, which can be assigned to the well-structured macroporosity. The macroporous TiO2material presents great potential in the fields of environmental remediation and energy conversion and storage.
机译：通过使用聚苯乙烯（PS）球形颗粒作为硬模板，通过容易纳米占方法合成大孔TiO2光催化剂。通过透射电子显微镜（TEM），扫描电子显微镜（SEM），热重差分热重试验（TG-DTG），X射线衍射（XRD）和N 2吸附，其特征在于，合成的光催化剂的特征在于。 TEM，SEM和XRD表征证实，大孔TiO2Photocatalyst由锐钛矿相组成。根据N2吸附分析，可以实现87.85m 2 / g的高比表面积。选择罗丹明B（RHB）作为探针分子以评估TiO2催化剂的光催化活性。与在没有PS球形模板的情况下合成的TiO 2材料相比，在500℃下烧结的大孔TiO2催化剂在UV照射下对RHB的降解表现出更高的活性，这可以分配给结构良好的巨孔率。大孔TiO2材料在环境修复和能量转换和储存领域具有巨大潜力。

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