SBA-15 zeolite composite titanium dioxide and its photocatalytic properties in degradation of methylene blue

被引：0
|
作者：
Sun X. [1 ]
Zhang J. [1 ]
Chang Y. [1 ]
Liang D. [1 ]
机构：
[1] College of Materials Science and Engineering, Northeast Forestry University, Harbin
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 10期
关键词：
Mesoporous molecular sieves; Nanocomposite; Photocatalytic degradation; SBA-15; Stability; Template; Titanium dioxide;
D O I：
10.11990/jheu.201805011
中图分类号：
学科分类号：
摘要：
In order to explore the photocatalytic performance of SBA-15 molecular sieve composite titanium dioxide, SBA-15 molecular sieves that had a uniform diameter, large specific surface area, and adjustable pore diameter within a certain range, were prepared by the template method at 550℃. They were then composited onto titanium dioxide under a low temperature hydrothermal, and the optimal ratio of raw materials was tested to select the most efficient ratio. The SBA-15 molecular sieve compositing titanium dioxide obtained by this method had good performance in the photocatalytic degradation of organic pollutants, and the degradation rate reached more than 90%. Titanium dioxide itself had the advantages of green, high efficiency, and so on. The products obtained from it were stabilized so that it could be preserved for a long time. Results showed that the catalytic degradation efficiency of the sample, after being placed for a period of time, was almost the same as that of the first time. This experiment explored the best reaction conditions and the best experimental ratio for the sample to degrade organic pollutants. When the pH value in the reaction system was 5, the degradation efficiency reached its maximum and its degradation rate was 95%. © 2019, Editorial Department of Journal of HEU. All right reserved.
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页码：1795 / 1800
页数：5
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