稀土、Fe3+掺杂TiO2光催化降解水中氨氮研究

广西师范大学学报（自然科学版） ›› 2014, Vol. 32 ›› Issue (2): 117-121.

稀土、Fe³⁺掺杂TiO₂光催化降解水中氨氮研究

张宗伟¹, 李酽², 初飞雪¹

1. 中国民航大学机场学院,天津300300;
2. 中国民航大学理学院,天津300300

收稿日期:2013-09-26 出版日期:2014-06-25 发布日期:2018-09-25
通讯作者: 张宗伟(1981—),男,山东鄄城人,中国民航大学讲师,博士。E-mail: zhv116@163.com。
基金资助:
国家自然科学基金委员会和中国民航局联合资助项目(61079010);中国民航大学重大培育项目(3122013P001)

Degradation of Ammonia Nitrogen in Wastewater by Lanthanon and Fe³⁺ Doped TiO₂ Photocatalysis

ZHANG Zong-wei¹, LI Yan², CHU Fei-xue¹

1. College of Airport, Civil Aviation University of China, Tianjin 300300, China;
2. College of Science, Civil Aviation University of China, Tianjin 300300, China

Received:2013-09-26 Online:2014-06-25 Published:2018-09-25

摘要/Abstract

摘要： 以溶胶-凝胶法制备了纳米TiO₂和稀土离子Eu³⁺、Y³⁺、La³⁺、Tb³⁺、Dy³⁺及Fe³⁺掺杂的TiO₂,并以之为催化剂进行在超声波氙灯照射下降解氨氮污水。实验结果表明稀土或Fe³⁺掺入TiO₂后使TiO₂光响应范围向可见光拓展,提高了氨氮污水的降解率; Fe³⁺和稀土离子共掺杂后,La-Fe-TiO₂、Eu-Fe-TiO₂和Tb-Fe-TiO₂氨氮污水降解率均比单掺杂提高。

关键词: 纳米TiO₂, 稀土掺杂, Fe³⁺, 氨氮污水, 降解

Abstract: Nano-TiO₂ with photocatalytic activity were prepared by sol-gel progress. Tb³⁺、Eu³⁺、Y³⁺、La³⁺、Dy³⁺、Fe³⁺ were adoped to enhance the photocatalytic activity. The degradation of ammonia nitrogen wastewater was investigated by TiO₂ catalyst. The reaction also features the photocatalytic activity of Nano-TiO₂. The results indicate that titania doped lanthanon could efficiently improve the photoactivity and expand the visible light response range. Fe³⁺ could reduce the chance of photo-generated electron-hole recombination and increase the photodegradation efficiency. The NH₃-N photodegradation by La-Fe-TiO₂ (Eu-Fe-TiO₂ or Tb-Fe-TiO₂) was higher than that by Fe-TiO₂ or La-TiO₂(Eu-TiO₂ or Tb-TiO₂).

Key words: nano-TiO₂, lanthanon-doped, Fe³⁺, ammonia nitrogen wastewater, degradation

中图分类号:

TQ134.1

张宗伟, 李酽, 初飞雪. 稀土、Fe³⁺掺杂TiO₂光催化降解水中氨氮研究[J]. 广西师范大学学报（自然科学版）, 2014, 32(2): 117-121.

ZHANG Zong-wei, LI Yan, CHU Fei-xue. Degradation of Ammonia Nitrogen in Wastewater by Lanthanon and Fe³⁺ Doped TiO₂ Photocatalysis[J]. Journal of Guangxi Normal University(Natural Science Edition), 2014, 32(2): 117-121.

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稀土、Fe³⁺掺杂TiO₂光催化降解水中氨氮研究

Degradation of Ammonia Nitrogen in Wastewater by Lanthanon and Fe³⁺ Doped TiO₂ Photocatalysis

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