二氧化钛-二氧化硅二元气凝胶的制备及其光催化活性

Zhongsheng Deng , Jue Wang , Yulong Zhang , Zhinong Weng , Zhe Zhang , Bin Zhou , Jun Shen , Linyan Cheng
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引用次数: 30

摘要

研究了二氧化钛-二氧化硅气凝胶的制备、表征及其光催化降解苯酚污染物的性能。在乙醇中进行超临界干燥后,气凝胶大部分转化为锐钛矿微晶。气凝胶光催化降解水中苯酚的实验结果表明,二元气凝胶光催化降解水中苯酚的效率高于工业TiO2气凝胶和纯TiO2气凝胶。气凝胶的光催化活性先随SiO2含量的增加而增加,但在摩尔比为1:1时达到最大值。
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Preparation and photocatalytic activity of TiO2-SiO2 binary aerogels

The preparation, characterization and photocatalytic degradation of phenol pollutant of TiO2-SiO2 aerogels were investigated. The aerogels were mostly turned to anatase microcrystalline after supercritical drying in ethanol. Photocatalytic degradation of phenol in water on aerogels shows that the binary aerogels have high efficiency than the commercial TiO2 and pure TiO2 aerogel. The photocatalytic activity of the aerogels increased with the SiO2 content at first but came to a maximum at molar ratio = 1:1.

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