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通过浆料直写无模成型技术制备了三维的TiO2网络结构,所得结构在空气中1150℃的条件下煅烧2 h,并用于亚甲基蓝的光催化分解.分别通过X射线衍射和扫描电子显微镜研究了烧成样品的物相结构和形貌.用紫外可见分光光度计表征了烧成样品的光催化分解性能,结果显示本结构样品的光催化性能优于同质量的圆柱状样品.此外,本实验设计了三种不同的网络结构,烧成后进行光催化降解性能测试.结果显示:通过合理的结构设计,网络样品的光催化降解性能可提高大于60%的程度.样品催化性能的提高可归因于催化剂结构设计所带来的材料对光辐射吸收的增强.
The three-dimensional TiO2 network structure was prepared by slurry direct writing moldless molding technology, and the obtained structure was calcined at 1150 ℃ in air for 2 h and used for the photocatalytic decomposition of methylene blue.According to X-ray diffraction and scanning electron microscopy The phase structure and morphology of the sintered samples were characterized by UV-Vis spectrophotometer.The results showed that the photocatalytic performance of the samples was better than that of the cylindrical samples with the same mass.Furthermore, Three different network structures were designed and their photocatalytic degradation properties were tested after firing.The results showed that the photocatalytic degradation performance of the network samples could be improved by more than 60% through rational structural design.The improvement of the catalytic performance of the samples Due to the catalyst structure design brings about the material to enhance the absorption of light radiation.