Abstract: Polyacrylate-TiO2 hybrid coating was prepared via solution-blending method with methyl methacrvlate(MMA)，butyl acrylate(BA)，acrylic acid(AA)and tetrabutyltitanate(TBOT)as main raw ma- terials.The hybrid coatings was characterized by use of IR，TEM，UV，and the catalytic properties of the hybrid coatings were studied.The results showed that polyacrylate was hybridized with TiO2 through COO— Ti bonds.The hybrid coatings was good nanohybrid material，in which the TiO2 had narow size distribution with the particle size at about 3 nm.The ability of UV absorption of the hybrid coatings was beter than poly-acrylics，the absorption wavelength of the hybrid coatings showed red-shift.Compared with TiO2，the photo-catalytic rate of the hybrid coatings was slower，but the photocatalytic efect was beter，the degradation of mertylene blue wasi ncreased first and reduced later with the increasing of AA/TiO2 mole ratio，eventurely reach 97%.The property of the reuse of the hybrid coating was good，and it can be recovered easily，the hy-brid coating was expected to be used widely in waste-water treatment.

Key words: polyacrylics, TiO2, hybrid coating, methylene blue, photocatalysis, degradation

摘要： 以甲基丙烯酸甲酯(MMA)、丙烯酸正丁酯(BA)、丙烯酸(AA)、钛酸丁酯(TBOT)为主要原料，采用溶液共混法制备了聚丙烯酸酯-TiO2杂化涂层。采用FT-IR、TEM、UV等方法对杂化涂层进行了测试，并对杂化涂层的光催化性能进行了研究，结果表明:在杂化涂层中聚丙烯酸酯与TiO2通过COO—Ti键发生了化学结合;杂化涂层是较为理想的纳米复合材料，在杂化涂层中TiO2粒子的粒径分布窄，粒径在3nm左右;杂化涂层对紫外线的吸收性能明显优于聚丙烯酸酯，杂化涂层对紫外线的吸收发生了红移;与TiO2粉末相比，杂化涂层的光催化速率慢，但光催化得较彻底，随着AA与TiO2物质的量比的增加，杂化涂层对亚甲基蓝的降解率先是增加，然后又减少，降解率可达97%，杂化涂层的重复使用性能良好，便于回收，在污水处理领域具有广泛的实际应用价值。

关键词: 聚丙烯酸酯 , TiO₂ , 杂化涂层 , 亚甲基蓝 , 光催化 , 降解率