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为了提高催化剂对太阳光的充分吸收和利用,采用模板技术合成了C,Co共掺杂的具有介孔结构的纳米锐钛矿型TiO2(C,Co-MTiO2)。采用N2-物理吸附和解吸附、X-射线衍射、高分辨电子显微镜、UV-Vis对材料进行表征。结果表明,该材料热稳定性好,比表面积高,是具有较大介孔孔径的锐钛矿型TiO2。在夏季太阳光照射下光催化降解亚甲基蓝、甲基紫、曙红Y和甲基橙4种有机染料,与商品化的P-25TiO2相比,C,Co-MTiO2有很好的催化活性。该催化剂的高效光催化活性可能与其锐钛矿晶体结构、高比表面积、纳米尺寸、介孔孔道、碳和钴的协同效应有关。
In order to improve the sunlight absorption and utilization of the catalyst, C, Co co-doped mesoporous anatase TiO2 (C, Co-MTiO2) was synthesized by using template technique. The materials were characterized by N2-physisorption and desorption, X-ray diffraction, high-resolution electron microscopy, UV-Vis. The results show that the material has good thermal stability and high specific surface area and is anatase TiO2 with larger mesopore size. Photocatalytic degradation of four organic dyes, methylene blue, methyl violet, eosin Y and methyl orange, under the sunlight in summer showed that C and Co-MTiO2 had good catalytic activity compared with commercial P-25TiO2. The high photocatalytic activity of the catalyst may be related to the synergistic effect of its anatase crystal structure, high specific surface area, nanometer size, mesoporous channels, carbon and cobalt.