製備鑭及氮摻雜改質二氧化鈦降解空氣中NOx之研究

張家偉

doi:10.6840/cycu201600699

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制备镧及氮掺杂改质二氧化钛降解空气中NOx之研究

Study on preparation of lanthanum and nitrogen doped modified titanium dioxide for degradation of NOx in air

张家伟 , 硕士　　导师：王雅玢;游胜杰　　

繁体中文 DOI： 10.6840/cycu201600699

氮氧化物；溶胶凝胶法；二氧化钛；光催化； NOx ； sol-gel method ； titanium dioxide ； photocatalytic

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摘要 │ 参考文献 (68) │ 国际计量

摘要〈TOP〉

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The main source of NOx is emission from factories and automobiles. NOx is usually emitted to the atmosphere which causes risk of cancer in human; thus, making it one of the most important pollutants to be removed from the atmosphere. However, NOx is also one of most difficult pollutants in the atmosphere to process and eradicate.
	In this study, lanthanum and nitrogen was doped individually with titanium dioxide and prepared using sol-gel method. The tests of different doping ratio, different calcination temperature, different calcination time, different environment humidity and stability was investigated to find the best condition in making an effective catalyst. Finally, different characteristic analyses were used to reveal that lanthanum and nitrogen doped titanium dioxide has better photocatalytic activity than pure titanium dioxide.
The results showed that lanthanum doped titanium dioxide showed its best photocatalytic activity with mass ratio of 3%, the visible light activity and simulated solar light activity was 32.0% and 38.5%, respectively. Nitrogen doped titanium dioxide had its best photocatalytic activity with mass ratio of 63.3%, the visible light activity and simulated solar light activity was 25.6% and 39.3%, respectively. The lanthanum and nitrogen doped titanium dioxide had the best photocatalytic activity in calcination temperature of 500 ºC and calcination time of 5 h. In the experiment of different environment humidity, the efficiency of lanthanum and nitrogen doped titanium dioxide in removing NO under visible light decreased. The efficiency of lanthanum and nitrogen doped titanium dioxide in removing NO under simulated solar light increased and produced large of NO2. In the experiment of stability test, the efficiency of lanthanum and nitrogen doped titanium dioxide in removing NO under visible light was 23.4% and 17.9%, respectively after five cycles. The efficiency of lanthanum and nitrogen doped titanium dioxide in removing NO under simulated solar light was 40.2% and 35.2%, respectively after five cycles.

参考文献 ( 68 ) 〈TOP〉

3. Shiva Mahmoudi, J.B., Jonathan P.K. Seville, NOx formation and selective non-catalytic reduction (SNCR) in a ﬂuidized bed combustor of biomass. Biomass & Bioenergy, 2010. 34: p. 1393 -1409.
连结：
9. 王国至, 应用二氧化钛/聚苯胺复合物去除甲醛之研究. 中原大学生物环境工程学系硕士论文, 2014.
连结：
10. Jr., J.T.Y., Photochemistry on TiO2: Mechanisms behind the surface chemistry. Surface Science, 2009. 603: p. 1605–1612.
连结：
11. Heller, A., Chemistry and Applications of Photocatalytic Oxidation of Thin Organic Films. Accounts of Chemical Research, 1995. 28: p. 503-508.
连结：
12. Sclafani A, P.L., Schiavello M, Influence of the Preparation Methods of TiO2 on the Photocatalytic Degradation of Phenol in Aqueous Dispersion. The Journal of Physical Chemistrym, 1990. 94: p. 829-832.
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引用含有DOI的文献

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。 如想对DOI的使用与概念有进一步了解，请参考 （ ） 。

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。