Photocatalytic Degradation of Microcystin-LR by Bismuth Tungstate

Tingwen Zhang; Yanqiu Cao; Aijun Gong; Yujiao Wang; Lina Qiu

doi:10.14233/ajchem.2014.17882

Issue

Vol. 26 No. 22 (2014): Vol 26 Issue 22

Issue Published : November 6, 2014

This work is licensed under a Creative Commons Attribution 4.0 International License.

Photocatalytic Degradation of Microcystin-LR by Bismuth Tungstate

https://doi.org/10.14233/ajchem.2014.17882

Tingwen Zhang

School of Chemistry and Biology Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China

Yanqiu Cao

School of Chemistry and Biology Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China

Aijun Gong

School of Chemistry and Biology Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China

Yujiao Wang

School of Chemistry and Biology Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China

Lina Qiu

School of Chemistry and Biology Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China

Corresponding Author(s) : Yanqiu Cao

yqcaohx@ustb.edu.cn

Asian Journal of Chemistry, Vol. 26 No. 22 (2014): Vol 26 Issue 22
Article Published : November 6, 2014

Abstract

In this study, the photocatalytic degradation of microcystin-LR by bismuth tungstate (Bi₂WO₆) in simulated sunlight process was investigated. The effect of different parameters, such as light intensity, Bi₂WO₆ dosage, reaction temperature, pH and the initial concentration of microcystin-LR were discussed. The degradation rate increased with the increment of light intensity and temperature, due to the increase of number of active cites. The optimal pH was 1.20 and the degradation rate would reduced when the pH increased. Experiments showed that, the ratio of [Bi₂WO₆]/[microcystin-LR] was a constant quantity. Only when the ratio was increased, the degradation rate can be improved. The photocatalytic reaction was also found to follow pseudo-first-order kinetics. Moreover, experiments showed a promising result as for the recycling of Bi₂WO₆.

Keywords

Microcystin-LR Bismuth tungstate Photocatalytic degradation

Zhang, T., Cao, Y., Gong, A., Wang, Y., & Qiu, L. (2014). Photocatalytic Degradation of Microcystin-LR by Bismuth Tungstate. Asian Journal of Chemistry, 26(22), 7799–7803. https://doi.org/10.14233/ajchem.2014.17882

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M. Ziegmann, M. Abert, M. Muller and F.H. Frimmel, Water Res., 44, 195 (2010); doi:10.1016/j.watres.2009.09.035.

W.Q. Wang, Environ. Sci., 31, 468 (2010).

A.J. Feitz and T.D. Waite, Environ. Sci. Technol., 37, 561 (2003); doi:10.1021/es0256010.

B. Yuan, Y. Li, X. Huang, H. Liu and J. Qu, J. Photochem. Photobiol. Chem., 178, 106 (2006); doi:10.1016/j.jphotochem.2005.07.017.

M.G. Antoniou, J.A. Shoemaker, A.A.D.L. Cruz and D.D. Dionysiou, Environ. Sci. Technol., 42, 8877 (2008); doi:10.1021/es801637z.

A. Lawton, L.P.K.J. Robertson, B.J.P.A. Cornish, I.L. Marr and M. Jaspars, J. Catal., 213, 109 (2009); doi:10.1016/S0021-9517(02)00049-0.

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S.O. Alfaro and A. Martínez-de la Cruz, Appl. Catal. A, 383, 128 (2010); doi:10.1016/j.apcata.2010.05.034.

C. Wang, H. Zhang, F. Li and L. Zhu, Environ. Sci. Technol., 44, 6843 (2010); doi:10.1021/es101890w.

J. Tang, Z. Zou and J. Ye, Catal. Lett., 92, 53 (2004); doi:10.1023/B:CATL.0000011086.20412.aa.

Y. Shi, S. Feng and C. Cao, Mater. Lett., 44, 215 (2000); doi:10.1016/S0167-577X(00)00030-6.

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H. Fu, C. Pan, W. Yao and Y. Zhu, J. Phys. Chem. B, 109, 22432 (2005); doi:10.1021/jp052995j.

Y. Li, J. Liu, X. Huang and G. Li, Cryst. Growth Des., 7, 1350 (2007); doi:10.1021/cg070343+.

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M. Chen and W. Chu, Ind. Eng. Chem. Res., 51, 4887 (2012); doi:10.1021/ie300146h.

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P. Chen, L. Zhu, S. Fang, C. Wang and G. Shan, Environ. Sci. Technol., 46, 2345 (2012); doi:10.1021/es2036338.

H. Fu, C. Pan, W. Yao and Y. Zhu, J. Phys. Chem. B, 109, 22432 (2005); doi:10.1021/jp052995j.

F. Amano, K. Nogami and B. Ohtani, J. Phys. Chem. C, 113, 1536 (2009); doi:10.1021/jp808685m.

M. Chen and W. Chu, Ind. Eng. Chem. Res., 51, 4887 (2012); doi:10.1021/ie300146h.

C.C. Pei and W. Chu, Chem. Eng. J., 223, 665 (2013); doi:10.1016/j.cej.2013.02.125.

Issue

Vol. 26 No. 22 (2014): Vol 26 Issue 22

Photocatalytic Degradation of Microcystin-LR by Bismuth Tungstate

Corresponding Author(s) : Yanqiu Cao

Abstract

Keywords

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