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篇目详细内容 |
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【篇名】 |
Photocatalytic degradation of methyl orange using ZnO/TiO2 composites |
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【刊名】 |
Frontiers of Environmental Science and Engineering in China |
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【刊名缩写】 |
Front.Environ.Sci.Engin.China |
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【ISSN】 |
1673-7415 |
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【EISSN】 |
1673-7520 |
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【DOI】 |
10.1007/s11783-009-0035-2 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2009 |
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【卷期】 |
3
卷3期 |
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【页码】 |
271-280
页,共
10
页 |
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【作者】 |
Ming GE;
Changsheng GUO;
Xingwang ZHU;
Lili MA;
Zhenan HAN;
Wei HU;
Yuqiu WANG;
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【关键词】 |
photocatalytic degradation; methyl orange; ZnO/TiO2 composites; high performance liquid chromatography mass spectrometry (HPLC-MS) |
【摘要】 |
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ZnO/TiO2 composites were synthesized by using the solvothermal method and ultrasonic precipitation followed by heat treatment in order to investigate their photocatalytic degradation of methyl orange (MO) in aqueous suspension under UV irradiation. The composition and surface structure of the catalyst were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), and transmission electron microscopy (TEM). The degradation efficiencies of MO at various pH values were obtained. The highest degradation efficiencies were obtained before 30min and after 60min at pH 11.0 and pH 2.0, respectively. A sample analysis was conducted using liquid chromatography coupled with electrospray ionization ion-trap mass spectrometry. Six intermediates were found during the photocatalytic degradation process of quinonoid MO. The degradation pathway of quinonoid MO was also proposed. |
