| g-C3N4/高岭土复合材料的制备及其光催化性能研究 |
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| 引用本文： | 姚光远,黄伟欣,李春全,孙志明,郑水林.g-C3N4/高岭土复合材料的制备及其光催化性能研究[J].无机材料学报,2016,31(9):929-934. |
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| 作者姓名： | 姚光远 黄伟欣 李春全 孙志明 郑水林 |
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| 作者单位： | (中国矿业大学(北京) 化学与环境工程学院, 北京 100083) |
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| 基金项目： | 国家自然科学基金 (51504263) National Natural Science Foudation of China (51504263) |
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| 摘 要： | 以水洗高岭土为载体, 采用盐酸对g-C3N4进行质子化处理, 通过浸渍法制备了g-C3N4/高岭土复合光催化材料。采用X射线衍射(XRD)、场发射扫描电镜(FESEM)和紫外-可见吸收光谱(UV-Vis)等手段对复合材料的晶体结构、微观形貌和光学性能进行了表征, 并以罗丹明B为目标降解物, 研究了复合材料在可见光下的光催化性能。结果表明: 当高岭土和g-C3N4的质量配比为6︰3时, g-C3N4/高岭土具有较优的光催化性能, 其光催化速率是纯g-C3N4的8.62倍; 高岭土和g-C3N4通过静电吸引力紧密结合在一起, 该复合结构能够有效地降低光生电子和空穴的复合几率, 改善了纯g-C3N4光催化材料的吸附性能, 进而有效提高了其光催化性能。
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| 关 键 词： | 高岭土 g-C3N4 可见光光催化 浸渍法 |
| 收稿时间： | 2016-01-04 |
| 修稿时间： | 2016-04-11 |
Preparation and Photocatalytic Performance of g-C3N4/Kaolinite Composite |
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| YAO Guang-Yuan,HUANG Wei-Xin,LI Chun-Quan,SUN Zhi-Ming,ZHENG Shui-Lin.Preparation and Photocatalytic Performance of g-C3N4/Kaolinite Composite[J].Journal of Inorganic Materials,2016,31(9):929-934. |
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| Authors: | YAO Guang-Yuan HUANG Wei-Xin LI Chun-Quan SUN Zhi-Ming ZHENG Shui-Lin |
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| Affiliation: | (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China) |
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| Abstract: | g-C3N4/kaolinite composite photocatalysts were prepared via impregnation method. The microstructure, optical and interface properties of the obtained composites were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and UV-visible diffused reflectance spectroscope (UV-Vis DRS), respectively. The as-synthesized KA/g-C3N4(H+)-6︰3 sample exhibits significantly enhanced photocatalytic activity under visible-light irradiation towards degradation of rhodamine B, which is 8.62 times that of the pure g-C3N4. The g-C3N4 and kaolinite are firmly combined together via electrostatic force. The enhanced photocatalytic activity of the g-C3N4/ kaolinite composite is attributed to the improved adsorption capacity and the synergistic effect of the g-C3N4 and kaolinite, which restrains the recombination of electron-hole pairs. |
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| Keywords: | kaolinite g-C3N4 visible-light photocatalysis impregnation method |
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