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以聚乙二醇400为表面活性剂、二乙醇胺为抑制剂,采用蒸发诱导自组装法(EISA)制备了介孔TiO2纳米粉体,并利用尿素为掺杂剂通过固相反应制备出高活性N掺杂介孔TiO2纳米粉体。利用XRD、FE-SEM、TG-DSC等方法对粉体的物相和形貌进行分析表征。结果表明,合成的粉体尺寸分布均匀、纯度高、具有均匀分布的介孔网状结构;N掺杂使介孔TiO2纳米粉体的UV-Vis光吸收曲线产生红移。
Using polyethylene glycol 400 as surfactant and diethanolamine as inhibitor, the mesoporous TiO2nanopowder was prepared by evaporation-induced self-assembly (EISA) and urea was used as dopant to prepare high activity N - Doped Mesoporous TiO2 Nanopowders. The phase and morphology of the powders were characterized by XRD, FE-SEM and TG-DSC. The results show that the synthesized powders have uniform size distribution and high purity with uniform distribution of mesoporous network structure. The N-doping results in red shift of the UV-Vis absorption curve of the mesoporous TiO2 nanopowders.