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Photocatalytic degradation of phenanthrene on soil surfaces in the presence of nanometer anatase TiO_2 under UV-light

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文摘 The effect of nanometer anatase TiO_2 was investigated on the photocatalytic degradation of phenanthrene on soil surfaces under a variety of conditions.After being spiked with phenanthrene,soil samples loaded with different amounts of TiO_2(0wt.%,1wt.%,2wt.%,3wt.%,and 4 wt.%) were exposed to UV-light irradiation for 25 hr.The results indicated that the photocatalytic degradation of phenanthrene followed the pseudo first-order kinetics.TiO_2 significantly accelerated the degradation of phenanthrene with the half-life reduced from 45.90 to 31.36hr for TiO_2 loading of 0wt.% and 4wt.%,respectively.In addition,the effects of H_2O_2,light intensity and humic acid on the degradation of phenanthrene were investigated.The degradation of phenanthrene increased with the concentration of H_2O_2,light intensity and the concentration of humic acids.It has been demonstrated that the photocatalytic method in the presence of nanometer anatase TiO_2 was a very promising technology for the treatments of soil polluted with organic substances in the future.
来源 Journal of Environmental Sciences ,2012,24(12):2122-2126 【核心库】
DOI 10.1016/s1001-0742(11)61063-2
关键词 nanometer anatase TiO_2 ; photocatalytic degradation ; phenanthrene ; soil surfaces ; UV-light
地址

1. College of Chemistry,Chemical Engineering and Food Safety,Bohai University, Jinzhou, 121013  

2. Liaoning Academy of Environmental Sciences, Shenyang, 110031  

3. Institute for Frontier Materials,Deakin University, Australia, Geelong, 3217  

4. Liaoning University, Shenyang, 110136  

5. Institute of Applied Ecology,Chinese Academy of Sciences, Key Laboratory of Pollution Ecology and Environmental Engineering,Chinese Academy of Sciences, Shenyang, 110016

语种 英文
ISSN 1001-0742
学科 化学;环境污染及其防治
基金 supported by the Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering ;  the Liaoning Doctoral Funds
文献收藏号 CSCD:4710403

参考文献 共 41 共3页

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