Applied Ecology and Environmental Sciences
ISSN (Print): 2328-3912 ISSN (Online): 2328-3920 Website: Editor-in-chief: Alejandro González Medina
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Applied Ecology and Environmental Sciences. 2019, 7(5), 182-189
DOI: 10.12691/aees-7-5-4
Open AccessArticle

Photocatalytic Degradation of Persistence Herbicide Fomesafen by Using ZnO/Na2S2O8 as a Catalyst/Oxidant under UV radiation

Naveetha Gaggara1, and Atmakuru Ramesh1

1Department of Analytical Chemistry, International Institute of Biotechnology and Toxicology (IIBAT), Affiliated to the University of Madras, Padappai, Chennai, 601301, Tamilnadu, India

Pub. Date: November 06, 2019

Cite this paper:
Naveetha Gaggara and Atmakuru Ramesh. Photocatalytic Degradation of Persistence Herbicide Fomesafen by Using ZnO/Na2S2O8 as a Catalyst/Oxidant under UV radiation. Applied Ecology and Environmental Sciences. 2019; 7(5):182-189. doi: 10.12691/aees-7-5-4


In the present investigation, the Photocatalysis of Fomesafen new class of diphenyl ether herbicide was investigated using ZnO nanoparticles at different pH 4, 7 and 9. In the present study, the optimum amount of the catalyst was used for the photocatalysis, effect of UV light, effect of aeration and effect of the addition of oxidant to the reaction mixture were studied. The ZnO nanoparticles were synthesized by Sol-gel process and characterized by SEM, TEM, and XRD. The fomesafen formulation of active strength 12.5% was used in this experiment. The rate of the reaction in this experiment was followed pseudo-first-order kinetics. The half-life values of fomesafen with ZnO/Na2S2O8 in three different pH solutions were 16.03, 15.56 and 11.93 hours respectively. The optimum amount of catalyst used for this study was 100 mg L-1. The rate of the reaction was rapid in basic pH than in the acidic and neutral pH values. The degradation was fast in the presence of sunlight and nanoparticles.

Herbicide Fomesafen rate oxidant kinetics

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[1]  Samreen Heena Khan., et al., Photocatalytic degradation of organophosphate pesticides (Chlorpyrifos) using sunthesized zinc oxide nanoparticles by membrane filteration reactor under UV irradiation. Front Nanosci Nanotech, 2015. Volume 1(1): p. 23-27.
[2]  Maged EI-Kemary, Hany EI-Shamy, and Ibrahim EI-Mehasseb, Photocatalytic degradation of Ciprofloxacin drug in water using ZnO nanoparticles. Journal of Luminescence, 2010.130: p. 2327-2331.
[3]  Dilaeleyana Abu Bakar Sidik., et al., Photocatalytic Degradation of Industrial Dye Waste Water Using Zinc Oxide-Polyvinylpyrrolidone Nanoparticles. Malaysian Journal of Analytical Sciences, 2018. Vol 22 No 4: p. 693-701.
[4]  Aghareed M., et al., Engineered nanostructured ZnO for Water remediation: Operational parameters effect, Box-Behnken design optimization and Kinetic determinations. Applied Water Science, 2019. 9:43.
[5]  Kong, DS., et al., Evaporative Thinning: A facile synthesis method for high quality ultrathin layers of 2D crystals. American Chem Soc, 2011. 5: p. 4698-4703.
[6]  Liu FY., et al., The effect of temperature on Bi2Se2 nanostructures synthesized via chemical vapor deposition. Journal of material Sciences, 2015.26: p. 3881-3886.
[7]  He L., et al., Epitaxial growth of Bi2Se3 topological insulator thin films on Si. Journal of applied Physics, 2011. 109:103702.
[8]  C. Cheng., et al., Enhanced photocatalytic performance of TiO2-ZnO hybrid nanostructures. Scientific Reports, 2014. Vol. 4: article 4181.
[9]  B.O’Regan, and M. Gr¨atzel., A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films. Nature, 1991. vol. 353:6346: p. 737-740.
[10]  M. R. Hoffmann., et al., Environmental applications of semiconductor photocatalysis. Chemical Reviews, 1995. vol.95, no. 1: p. 69-96.
[11]  C. J. Barb´e, and F. Arendse P, Nanocrystalline titaniumoxide electrodes for photovoltaic applications. Journal of the American Ceramic Society, 1997. vol.80. no.12: p. 3157-3171.
[12]  Tabor P., et al., Plasmon-enhanced electron phonon coupling in direct surface states of the thin-film topological insulator Bi2Se3. Nature Physics, 2010. 6: p. 584-588.
[13]  Checkelsky JG., et al., Quantum interference in macroscopic crystals of nonmetallic Bi2Se3. Phys Re Letters, 2009. 103:246601.
[14]  Alegria LD., et al., Structural and Electrical Characterization of Bi2Se3 Nano structures grown by Metal-Organic Chemical Vapor Deposition. Nano Letters, 2012.12: p. 4711-4714.
[15]  Dang WH., et al., Epitaxial heterostructures of ultrathin topological insulator nanoplate and graphene. Nano Letters, 2010.10: p. 2870-2876.
[16]  Zhang C., et al., Facile fabrication of graphene-topological insulator Bi2Se3 hybrid dirac materials via chemical vapor deposition in selenium-rich conditions. Crystal Engineering comm, 2014.16:8941.
[17]  M. Vafaee, and M.S. Ghamsari, Preparation and Charactrization of ZnO nanoparticles by a novel sol-gel route. Materials Letters, 2007. 61: p.3265-3268.
[18]  Y Zheng, et al., Luminescence and Photocatalytic activity of ZnO nanocrystals: Correlation between Structure and Property. Inorg. Chem, 2007. 46:p. 6675- 6682.
[19]  Q Wan, TH Wang, and JC Zhao, Enhanced photocatalytic activity of ZnO nanotetrapods. Appl. Phys. Letters, 2005. 87: p. 083105-083107.
[20]  EI Saeed, AM. EI-Fattah MA, and Azzam AM, Synthesis of ZnO nanoparticles and studying its influence on the antimicrobial, anticorrosion and mechanical behavior of polyurethane composite for surface coating. Dyes Pigments, 2015. 121: 282-9.
[21]  Fenoll, S. J., Vela, N., Ruiz,E., Navarro, G., Photocatalytic degradation of eight pesticides in leaching water by use of ZnO under natural sunlight. Journal of hazardous Materials, 2009. 172: p. 1303-1310.
[22]  Masoud Giahi, and Faegheh Ghanbari., Photocatalytic Degradation of Triton X-100 by Zinc oxide Nanoparticles. Journal of Physical and Theoretical Chemistry, 2010. 7 (3): p. 189-193.