| 改性沸石/TiO_2的制备及光催化降解亚甲基蓝 |
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| 引用本文： | 廖刚,苏春雷,何玉明.改性沸石/TiO_2的制备及光催化降解亚甲基蓝[J].人工晶体学报,2019,48(4):757-762. |
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| 作者姓名： | 廖刚 苏春雷 何玉明 |
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| 作者单位： | 四川建筑职业技术学院交通与市政工程系,成都,610399 |
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| 基金项目： | 四川建筑职业技术学院科研项目 |
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| 摘 要： | 使用碱液侵蚀加煅烧的方法对天然沸石改性,获得改性沸石。以改性沸石为载体,钛酸丁酯为前驱体,使用溶胶-凝胶法制备了改性沸石/TiO_2催化剂。使用亚甲基蓝作为目标污染物,测试改性沸石/TiO_2催化剂的降解性能。结果表明,采用改性沸石负载TiO_2的方法有助于提高光催化剂的利用效率,当TiO_2的负载率为6. 08%时,对亚甲基蓝的降解效率高达0. 935。XRD、SEM-EDS、BET、FTIR测试结果表明,TiO_2以纳米尺度在改性沸石表面均匀分布,并且与改性沸石建立了较强的化学键连接,有利于改性沸石/TiO_2催化剂的长期性能。
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| 关 键 词： | 改性沸石 二氧化钛 亚甲基蓝 光催化活性 降解性能 |
Preparation of Modified-zeolite/TiO2 Composite and Photocatalytic Degradation of Methylene Blue |
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| LIAO Gang,SU Chun-lei,HE Yu-ming.Preparation of Modified-zeolite/TiO2 Composite and Photocatalytic Degradation of Methylene Blue[J].Journal of Synthetic Crystals,2019,48(4):757-762. |
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| Authors: | LIAO Gang SU Chun-lei HE Yu-ming |
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| Affiliation: | (Department of Transportation and Municipal Engineering, Sichuan College of Architectural Technology, Chengdu 610399, China) |
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| Abstract: | The natural zeolite was modified by alkali corrosion and calcination to obtain modified zeolite. Based on the obtained modified zeolite, the modified-zeolite/TiO 2 catalyst (MZTC) was fabricated by using sol-gel method. Methylene blue was used as the target pollutant to test the photocatalytic degradation performance of MZTC. The results show that it was more efficient to utilize the TiO 2 by loading TiO 2 on modified zeolite. When the content of TiO 2 was 6.08%, the degradation efficiency of MZTC towards methylene blue was the highest, reaching 0.935. The results of XRD, SEM-EDS, BET and FTIR show that TiO 2 was homogeneously distributed on the surface of the modified zeolite at the nanoscale, and a strong chemical bond was established between TiO 2 and the modified zeolite, which was conducive to the long-term performance of MZTC. |
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| Keywords: | modified zeolite TiO 2 methylene blue photocatalytic activity degradation performance |
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