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投稿时间：2015-09-30
投稿时间：2015-09-30
中文摘要: 采用溶胶凝胶法合成了掺杂Cu2+和Ce4+ 的TiO2可见光催化剂，用活性艳红X-3B降解脱色为模型反应，结合紫外-可见光谱法、XRD和SEM等表征手段，考察了制备条件与光催化活性的关系.实验结果表明：适量掺杂稀土元素Ce4+较单独掺杂Cu2+能更加有效地提高催化剂在可见光下的催化活性，掺杂后使催化剂的吸收带边位置发生红移，晶型结构为锐钛矿和金红石的混合晶型.掺杂Ce4+量为1.5%时，0.4 g催化剂对30 mL浓度为5 mg/L的活性艳红X-3B模拟印染废水降解率达到61.1%.
Abstract:Cu, Ce-doped TiO2 photocatalysts are prepared using the sol-gel method.Its influence of preparation condition and photocatalytic activity is characterized by means of UV-VIS spectrometry, XRD, SEM technique.These samples are also performed as photocatalysts in the degradation and decolorization of active brilliant red X-3B.Experimental results show that the Ce-doped TiO2 photocatalyst performs a better photocatalytic activity than that of separate Cu-doped photocatalytic under natural light.Because both rutile phase and anatase phase are formed in Cu, Ce-doped TiO2 and the band edges show a red shift compared with Cu -doped TiO2.Cu, Ce-doped TiO2 shows the highest photocatalytic activity when mass fraction of Ce in TiO2 is 1.5%.The decolorization rate of 5 mg/L active brilliant red X-3B reaches 61.1% when the dosage of catalyst is 13 g/L.
keywords: sol-gel method TiO2 active brilliant red X-3B
文章编号：20172010 中图分类号： 文献标志码：
基金项目:
| 作者 | 单位 | |
| 高立新 | 上海电力学院 环境与化学工程学院 | glx2010@shiep.edu.cn |
| Author Name | Affiliation | |
| GAO Lixin | School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China | glx2010@shiep.edu.cn |
引用文本：
高立新.Cu2+/Ce4+-TiO2可见光催化降解活性艳红X3B[J].上海电力大学学报,2017,33(2):157-161,172.
GAO Lixin.Cu2+/Ce4+ TiO2 for Visible-light Photocatalytic Decolorization of Active Brilliant Red X-3B[J].Journal of Shanghai University of Electric Power,2017,33(2):157-161,172.
高立新.Cu2+/Ce4+-TiO2可见光催化降解活性艳红X3B[J].上海电力大学学报,2017,33(2):157-161,172.
GAO Lixin.Cu2+/Ce4+ TiO2 for Visible-light Photocatalytic Decolorization of Active Brilliant Red X-3B[J].Journal of Shanghai University of Electric Power,2017,33(2):157-161,172.