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以伊利石为载体、双氰胺(C_2H_4N_4)为g-C_3N_4前驱体,采用液相浸渍-热聚合联合工艺制备出一种可见光响应的g-C_3N_4/伊利石光催化复合材料。利用XRD、FESEM、AFM、UV-Vis、BET及PL对样品的微观结构、界面特性及光学性能进行检测分析,同时考察g-C_3N_4/伊利石光催化复合材料在可见光照射下光催化降解环丙沙星(CIP)的效果。结果表明:相比纯g-C_3N_4,g-C_3N_4/伊利石复合材料在可见光下具有更高的光催化性能,其光催化速率是纯g-C_3N_4的11.26倍;伊利石与g-C_3N_4构成的复合结构能够有效地抑制光生载流子的复合,改善了纯g-C_3N_4材料的吸附性能与光催化活性。
The dicyandiamide (C_2H_4N_4) precursor was g-C_3N_4 using illite as carrier, and a g-C_3N_4 / illite photocatalytic composite with visible light response was prepared by liquid immersion-thermal polymerization. The microstructure, interfacial properties and optical properties of samples were investigated by XRD, FESEM, AFM, UV-Vis, BET and PL. The photocatalytic degradation of ciprofloxacin with g-C_3N_4 / Star (CIP) effect. The results show that the photocatalytic activity of g-C_3N_4 / illite composite is higher than that of pure g-C_3N_4 in visible light and its photocatalytic activity is 11.26 times that of pure g-C_3N_4. Compared with pure g-C_3N_4, g-C_3N_4 / The composite structure can effectively inhibit the recombination of photogenerated carriers and improve the adsorption performance and photocatalytic activity of pure g-C_3N_4 material.