| SiO2/TiO2催化剂的制备及其光催化性能 |
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| 引用本文： | 姜东,徐耀,侯博,吴东,孙予罕.SiO2/TiO2催化剂的制备及其光催化性能[J].无机材料学报,2008,23(5):1080. |
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| 作者姓名： | 姜东 徐耀 侯博 吴东 孙予罕 |
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| 作者单位： | 1. 中国科学院山西煤炭化学研究所煤转化国家重点实验室, 太原 030001; 2. 中国科学院研究生院, 北京 100049 |
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| 摘 要： | 利用钛酸四丁酯、正硅酸乙酯、乙酸和水为原料, 通过溶剂热方法制备得到SiO2/TiO2催化剂. 产物经XRD、Raman、TEM、BET、FT-IR和XPS表征, 结果表明: 所制备的SiO2/TiO2催化剂为比表面积大、结晶度高的锐钛矿TiO2, SiO2与TiO2之间通过Si-O-Ti键结合. 另外, 以亚甲基蓝降解为探针反应, 考察了SiO2/TiO2催化剂在紫外光照射下的光催化性能. 结果表明: SiO2/TiO2催化剂具有比纯TiO2更优越的光催化性能, 65min可以将亚甲基蓝(MB)彻底降解.
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| 关 键 词： | 溶剂热 SiO2/TiO2 光催化性能 |
| 收稿时间： | 2007-11-02 |
| 修稿时间： | 2007-12-19 |
Synthesis and Photocatalytic Property of SiO2/TiO2 |
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| JIANG Dong,XU Yao,HOU Bo,WU Dong,SUN Yu-Han.Synthesis and Photocatalytic Property of SiO2/TiO2[J].Journal of Inorganic Materials,2008,23(5):1080. |
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| Authors: | JIANG Dong XU Yao HOU Bo WU Dong SUN Yu-Han |
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| Affiliation: | 1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | A series of SiO2/TiO2 photocatalysts were successfully synthesized via a solvothermal method using titanium n-butoxide, tetraethoxysilane, acetic acid and water as raw materials. As-synthesized SiO2/TiO2 catalyst was characterized by XRD, Raman, BET, TEM, FT-IR and XPS and its phtocatalytic activity was evaluated by the degradation of methylene blue under UV light irradiation. The results show that there is strong interaction between TiO2 and SiO2, and Ti-O-Si bonds are formed in the SiO2/TiO2 catalysts. The obtained catalysts have large surface area and high crystalline anatase. Compared with pure TiO2, the SiO2/TiO2 photocatalysts show better photocatalytic activity which can completely photodegrade MB after 65min UV light irridation. |
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| Keywords: | SIO2/TiO2 |
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