中文摘要：

以葡萄糖和钛酸四丁酯为原料,采用溶胶G凝胶法制备了CGTiO2 光催化剂粉体. 利用XRD、XPS、Raman、PL、UVGVis等对样品进行表征分析,研究了不同制备条件对样品性能的影响,并以亚甲基蓝（MB）作为目标降解物,研究了其光催化性能.结果表明,碳掺入到TiO2 晶格中,促进了样品由锐钛矿相向金红石相的转变,拓展了TiO2 在可见光区的光谱响应范围,降低了光生电子和空穴的复合几率. 当n（C）∶n（Ti）=0.30,400℃条件下焙烧4h制备的样品催化性能最好,在普通日光灯下3h内对MB的降解率达90.17%,显著高于同等实验条件下的DegussaP25（49.71%）.

英文摘要：

Carbon doped TiO 2 photocatalysts were synthesized by sol-gel process using glucose and tetrabutyl ti-tanate as precursors and characterized by XRD,XPS,Raman,PL and UV-Vis methods and so on.The influ-ences of different preparation condition on properties were studied.The photocatalytic activity of C-TiO 2 was in-vestigated by measuring the degradation rate of methylene-blue (MB)under the irradiation of fluorescent lamp. The results show that carbon ion was incorporated into the lattice of TiO 2 ,which can not only promote the phase transition of anatase to rutile but also broaden the absorption region to visible light and inhibit the recom-bination of the photo-generated electrons and holes.The photocatalytic activity of the sample with molar ratio of n (C)∶n (Ti)=0.30 and sintered at 400 ℃ for 4 h was the best under the irradiation of fluorescent light,it was 90.17% within 3 h and significantly higher than that of Degussa P25(49.71%)under the same experimental con-ditions.