| Ce掺杂ZnO/膨润土复合光催化材料的制备及其性能 |
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| 引用本文： | 郭红霞,;吴晨光,;崔素萍,;李钒,;王子明,;马晓宇.Ce掺杂ZnO/膨润土复合光催化材料的制备及其性能[J].纳米技术与精密工程,2014(5):313-319. |
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| 作者姓名： | 郭红霞 ;吴晨光 ;崔素萍 ;李钒 ;王子明 ;马晓宇 |
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| 作者单位： | [1]北京工业大学材料科学与工程学院,北京100124; [2]北京工业大学环境与能源工程学院,北京100124 |
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| 基金项目： | 国家“十二五”科技支撑资助项目（2011BAE29802）;国家自然科学基金资助项目（21176005）. |
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| 摘 要： | 以膨润土为载体,硝酸锌、硝酸铈和氢氧化钠为原料,采用沉淀法制备了Ce掺杂ZnO/膨润土复合光催化材料.利用X射线衍射(XRD)、红外光谱仪(FT-IR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、氮气吸附仪等对其进行表征,并通过对亚甲基蓝(MB)溶液脱色反应,考察紫外光照射下复合材料的光催化性能.结果表明,复合光催化材料中由于Ce掺杂ZnO的光催化作用与膨润土的吸附性相互协同,显示出优良的光催化活性和稳定性.当Ce的掺杂量为3.0%,同时复合光催化材料的加入量为20 mg/L,MB溶液的pH值为6时,复合光催化材料的性能最优,在紫外灯下照射2 h后,MB溶液的脱色率达到98.6%.
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| 关 键 词： | Ce掺杂ZnO 膨润土 光催化 复合材料 |
Preparation and Properties of Ce-Doped ZnO/Bentonite Composite Photocatalyst |
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| Affiliation: | Guo Hongxia , Wu Chenguang, Cui Suping , Li Fan , Wang Ziming , Ma Xiaoyu (1. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2. College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China) |
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| Abstract: | Ce-doped ZnO/bentonite composite photocatalyst was prepared by precipitation method with bentonite, Zn（NO3 ）2, Ce（NO3）3 and NaOH. The composite photocatalyst was characterized by X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FT-IR）, scanning electron microscope （SEM）, transmission electron microscope（TEM） and N2 physisorption apparatus. In addition, its photo- catalytic activity for the methylene blue degradation, under visible-light irradiation, was investigated. The experimental results indicate that the composite photocatalyst presents preferable photocatalytic property by the interaction between the photo catalytic activity of Ce-doped ZnO and the adsorptivity of bentonite. The composite photocatalyst also shows excellent photocatalytic activity and stability. When the doping amount of Ce was 3.0% , the decolorization rate of methylene blue could reach 98.6% as the amount of photocatalysts was 20 mg/L and the pH value was 6. |
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| Keywords: | Ce-doped ZnO bentonite photocatalysis composites |
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