Study on photodegradation of Azo dye by polyoxometalates/polyvinyl alcohol |
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| Authors: | FENG Changgen ZHUO Xiaoxi LIU Xia |
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| Affiliation: | aState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;bCollege of Science, China Agricultural University, Beijing 100094, China |
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| Abstract: | A series of photocatalysts, K11Ln(PW11O39)2]/PVA (Ln=La, Ce, Pr, Nd, Sm) were prepared by K11Ln(PW11O39)2] (Ln=La, Ce, Pr, Nd, Sm) containing five kinds of lanthanides and polyvinyl alcohol as the support. The catalysts obtained were characterized by Fourier transform infrared spectra, UV-vis spectra, powder X-ray diffraction, and scanning electron microscopy, indicating that the structure of K11Ln(PW11O39)2] and polyvinyl alcohol remained intact, respectively. The photocatalysts exhibited efficient catalytic activity to degrade methyl orange, Congo Red, Ponceau 2R. The maximal degradation conversions of the three kinds of dyes were 99.58%, 47.61%, 72.42%, respectively. |
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| Keywords: | polyoxometalates polyvinyl alcohol degradation azo dye rare earths |
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