| Fe2O3-TiO2-SiO2光催化降解头孢氨苄试验研究 |
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| 引用本文： | 李静玲,蒋晓瑜,徐升.Fe2O3-TiO2-SiO2光催化降解头孢氨苄试验研究[J].福建工程学院学报,2005,3(6):595-599. |
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| 作者姓名： | 李静玲 蒋晓瑜 徐升 |
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| 作者单位： | 福建工程学院环境与设备工程系,福建,福州,350007 |
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| 摘 要： | 采用溶胶-凝胶法制备了复合型Fe2O3-TiO2-SiO2光催化荆利用FTIR、XRD等测试手段对其结构进行了表征。通过研究Fe“掺入量、催化荆用量、光催化降解时间及催化剂吸附实验、催化反应动力学实验，探讨了光催化剂降解头孢氨苄的条件。实验结果表明：在自然光照的条件下。该催化荆对试液中头孢氨苄的吸附率达48％。120min紫外光照射可使头孢氨苄降解率达90％，降解率随着催化剂用量增加而增加。Fe^3＋掺杂量为2．5％的催化荆催化活性最好。头孢氨苄光催化降解反应中。速率常数（K）与头孢氨苄的初始浓度Cod呈0．40级的动力学关系。
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| 关 键 词： | 头孢氨苄 吸附 降解 动力学 |
| 文章编号： | 1672-4348（2005）06-0595-05 |
| 收稿时间： | 2005-10-15 |
| 修稿时间： | 2005年10月15 |
Experimental study on photocatalytic degradation of Cexalexin over Fe2O3 - TiO2 - SiO2 |
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| LI Jing-ling,JIANG Xiao-yu,XU Sheng.Experimental study on photocatalytic degradation of Cexalexin over Fe2O3 - TiO2 - SiO2[J].Journal of Fujian University of Technology,2005,3(6):595-599. |
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| Authors: | LI Jing-ling JIANG Xiao-yu XU Sheng |
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| Abstract: | Photocatalyst of Fe_2O_3-TiO_2-SiO_2 was prepared by a sol-gel method.The structure of the photocatalyst was characterized by FTIR and XRD.The degradation condition of Cexalexin on the catalyst was investigated via studying the doping amount of Fe~(3+),photocatalyst dosage,photocatalytic degradation time,and through adhesion and kinetics experiment.The results show that the adsorption rate of Cexalexin in the test solution is 48% and that the degradation rate of Cexalexin is 90% under ultraviolet irradiation.It is found that the degradation rate increases with the increment of the photocatalyst dosage,reaching the best catalyzing effect when doping rate of Fe~(3+) is 2.5%(w).The photocatalytic degradation reaction order is 0.4. |
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| Keywords: | Fe2O3-TiO2-SiO2 |
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