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Journal of Environmental Nanotechnology

(A Quarterly Peer-reviewed and Refereed International Journal)
ISSN(Print):2279-07 48; ISSN(Online):2319-5541

Photo Catalytic Activity of Chromium Doped Nano Titania for the Mineralization of Dichlorvos


Chromium doped (2, 4, 6 and 8 Molar ratio of M/Ti) nano Titania were synthesized through solgel technique followed by hydrothermal treatment using titanium (IV) isopropoxide as the precursor. The resulting nanocrystals were characterized by XRD, DRS-UV, ICP-AES, BET and TEM techniques. The photocatalytic activity of synthesized catalysts were tested for the mineralization of Dichlorvos in aqueous solution using air as an oxidant. The reaction products were collected at different intervals and analyzed with the help of HPLC and TOC analyzer. Chromium doped nanocrystalline titania shows better catalytic activity than both commercial and as synthesized pure titania. Among the various chromium doped titania 4 molar chromium doped titania is found to be the best for the mineralization of Dichlorvos. The catalytic activity will be correlated with physico-chemical properties and the results will be discussed in detail.

Article Type: Research Article

Corresponding Author: K. Balakrishnan 3  

Email: balki63@gmail.com

This article has not yet been cited.

T. Rajachandrasekar  1,  P. Selvakumar  2,  K. Balakrishnan 3*.  

1. Department of Chemistry, M. R. Government Arts College, Mannargudi, TN, India.

2. Department of Chemistry, Anna University, Chennai, TN, India.

3. Department of Chemistry, AVVM Sri Pushpam College, Poondi, TN, India.

J. Environ. Nanotechnol. Volume 4, No.3 pp. 17-23
ISSN: 2279-0748 eISSN: 2319-5541
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Bernasik Radeeka, M., Rekes M. and Sloma, M., Effect of Nb and Cr doped TiO2, Appl. Surf. Sci., 65(3), 240-245(1993).


Evgenidou, E., Fytianos, K. and Poulios, I., Semiconductor-sensitized Photodegradation of dichlorvos in water using TiO2 and ZnO as catalysts, Appl. Catal. B: Environ., 59(7), 81-89(2005).


Liu, Z. L., Cui, Z. L. and Zhang, Z. K., The structural defects and UV-VIS spectral characterization of TiO2 particles doped in the lattice with Cr3+ cations, Mater. Character, 54(6), 123-129(2005).


Mileson, B. E., Chambers, J. E., Chen, W. L., Dettbarn, W., Ehrich, M., Eldefrawi, A. T., Gaylor, D. W., Hamernik, K., Hodgson, E., Karczmar, A. G., Padilla, S., Pope, C. N., Richardson, R. J., Saunders, D. R., Sheets, L. P., Sultatos, L. G. and Wallace, K. B., Common mechanism of toxicity: a case study of organophosphorus pesticides, Toxicol. Sci., 41(2), 8-20(1998).


Naman, S. A., Khamma, Z. A. A. and Hussein, F. M., Photo-oxidative degradation of insecticide dichlorovos by a combined semiconductors and organic sensitizers in aqueous media, J. Photochem. and Photobiol. A: Chem., 153(7), 229-236(2002).


Ragnarsdottir, K. V., Environmental fate and toxicology of organophosphate pesticides, J. Geol. Soc., 157(8), 859-876(2000).


Rahman, M. A. and Muneer, M., Photocatalysed degradation of two selected pesticide derivatives, dichlorvos and phosphamidon, in aqueous suspensions of titanium dioxide, Desalination, 181(17), 161-172(2005).


Siva Rao, T., Teshome Abdo Segne, Susmitha, T., Balaram Kiran, A. and Subrahmanyam, C., Photocatalytic Degradation of Dichlorvos in Visible Light by - Nanocatalyst, Advances in Materials Science and Engineering, 2012(5), 1-9(2012).


Vijayan, P., Mahendiran, C., Suresh, C. and Shanthi, K., Photocatalytic activity of iron doped nanocrystalline titania for the oxidative degradation of 2,4,6-trichlorophenol, Catal. Today, 141(5), 220-224(2009).


Zhang, W., Li, Y., Zhu, S. and Wang, F., Surface modification of TiO2 film by iron doping using reactive magnetron sputtering, Chem. Phys. Lett., 373(13), 333-337(2003).


Zhang, Y. H. and Reller, A., Nanocrystalline iron-doped mesoporous titania and its phase transition, J. Mater. Chem., 11(2), 2537-2541(2001).


Zhang, Y. H., Weidenkaff, A. and Reller, A., Mesoporous structure and phase transition of nanocrystalline TiO2, Mater. Lett., 54(6), 375-381(2002).


Zhu, J., Chen, F., Zhang, J., Chen, H. and Anpo, M.,Fe3+-TiO2 photocatalysts prepared by combining sol-gel method with hydrothermal treatment and their characterization, J. Photochem. Photobio. A: Chem., 180(2), 196-204(2006).