CAJ | 학술논문

以葡萄糖和钛酸四丁酯为原料,采用溶胶-凝胶法制备了 C-TiO 2光催化剂粉体.利用 XRD、XPS、Raman、PL、UV-Vis 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 TiO 2晶格中,促进了样品由锐钛矿相向金红石相的转变,拓展了 TiO 2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4 h 制备的样品催化性能最好,在普通日光灯下3 h 内对 MB 的降解率达90．17％,显著高于同等实验条件下的 Degussa P25(49．71％).
이포도당화태산사정지위원료,채용용효-응효법제비료 C-TiO 2광최화제분체.이용 XRD、XPS、Raman、PL、UV-Vis 등대양품진행표정분석,연구료불동제비조건대양품성능적영향,병이아갑기람(MB)작위목표강해물,연구료기광최화성능.결과표명,탄참입도 TiO 2정격중,촉진료양품유예태광상향금홍석상적전변,탁전료 TiO 2재가견광구적광보향응범위,강저료광생전자화공혈적복합궤솔.당n (C)∶n (Ti)＝0．30,400℃조건하배소4 h 제비적양품최화성능최호,재보통일광등하3 h 내대 MB 적강해솔체90．17％,현저고우동등실험조건하적 Degussa P25(49．71％).
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.