图 书 馆
新型二氧化钛纳米管光（电）催化反应器的设计与开发Design and development of novel titania nanotubes based photo(electro)catalytic reactor |
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| 课程网址: | http://videolectures.net/ipssc2017_suhadolnik_titania_nanotubes/ |
| 主讲教师: | Luka Suhadolnik |
| 开课单位: | 约瑟夫·斯特凡研究所 |
| 开课时间: | 2017-05-23 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | A new highly-efficient photo(electro)catalytic reactor for water and air purification was designed and assembled based on photoelectrocatalytic technology to completely degrade organic pollutants without any hazardous oxidants. The active part of the reactor consists of nanosized titanium dioxide, which is illuminated with UV light, hence generating electrons and holes that take part in the oxidation and reduction reactions at the semiconductor’s surface. Since titania nanotubes film is grown by anodic oxidation process it is consequently firmly attached to different forms and shapes of metal titanium and cannot be washed away during the treatment. In our work we studied the most important parameters of anodic oxidation and annealing procedure that determine the morphology, length, and crystal structure of polycrystalline TiO2 nanotubes. We found out that the optimum length of titania nanotubes is between 15 to 20 µm which enables effective capture of the incident UV illumination and control of electron-hole recombination time. The efficiency of thus processed active photocatalytic parts was measured via degradation studies of caffeine and phenol. These active photocatalytic anodes were later assembled into a large-volume reactor (1.5 l) and positioned next to metal cathodes and UV light sources in such a way to achieve a uniform illumination of the photocatalyst. Currently, this large-volume reactor is tested to degrade organic compounds present in real waste waters from textile, pharmaceutical and paper production industries. |
| 关 键 词: | 光电催化技术; 催化反应器; 纳米二氧化钛 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2021-11-26：zkj |
| 最后编审: | 2021-11-26：zkj |
| 阅读次数: | 46 |