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Ag-TiO2/分子筛复合材料的制备及其性能研究
作者：尹青亚，马炎，王今华，殷会玲，李建伟，张茂亮
（河南建筑材料研究设计院有限责任公司，河南 郑州 450002）
摘要：采用溶胶-水热合成法制备了Ag-TiO2光催化材料，并将Ag-TiO2负载到分子筛上制备出Ag-TiO2/分子筛复合材料。在可见光照射下，以光催化降解亚甲基蓝为探针反应，研究了该复合材料的光催化活性。结果表明：当Ag / Ti摩尔比为0.007时，制备的Ag-TiO2光催化剂催化效率与纯TiO2相比提高了25.6%；与纯TiO2相比，当Ag-TiO2掺量为分子筛粉体质量的6.5%时，制备的Ag-TiO2 /分子筛复合材料具有更大的比表面积与表观常数。
关键词：Ag-TiO2/分子筛；复合；催化；光催化活性
中图分类号：TU56+1.6 文献标识码：A 文章编号：1001-702X（2023）02-0042-05
Preparation and properties of Ag-TiO2/zeolite composite catalysts
YIN Qingya，MA Yan，WANG Jinhua，YIN Huiling，LI Jianwei，ZHANG Maoliang
（Henan Building Materials Research and Design Institute Co. Ltd.，Zhengzhou 450002，China）
Abstract：Ag-TiO2 photocatalytic materials were prepared by sol-hydrothermal method，Ag-TiO2 and zeolite powder were compounded to construct Ag-TiO2 /zeolite. The photocatalytic activity of the composite catalysts were evaluated by degradation of methylene blue as the probe reaction under visible light irradiation. The results show that when the Ag/Ti molar ratio was 0.007，the catalytic efficiency of the prepared Ag-TiO2 photocatalyst was 25.6% higher than that of pure TiO2. Compared with pure TiO2，when the mass ratio of Ag-TiO2 to molecular sieve powder is 6.5%，the composite Ag-TiO2 /zeolite has larger specific surface area and apparent constant.
Key words： Ag-TiO2 /zeolite，composite，photocatalyst，photocatalytic activity