Abramović, Biljana

Despotović, Vesna

Sfirloaga, Paula

Šojić Merkulov, Daniela

Despotović Vesna

Sfirloaga Paula

Šojić Merkulov Daniela

Abramović Biljana

University of Szeged

 25th International Symposium on Analytical and Environmental Problems 123 PHOTOCATALYTIC ACTIVITY OF METAL OXIDE NANOPARTICLES FOR REMOVAL OF THE HERBICIDE FLUROXYPYR FROM WATER   Vesna Despotović1, Paula Sfirloaga2, Daniela Šojić Merkulov1, Biljana Abramović1  1University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia 2National Institute for Research and Development in Electrochemistry and Condensed Matter, Department of Condensed Matter, 1 Plautius Andronescu St., 300224 Timisoara, Romania  e-mail: vesna.despotovic@dh.uns.ac.rs  Abstract The photocatalytic materials absorb the photons having energy equals to or more than the band gap energy between the valence and conduction bands of the photocatalyst. The positive holes in the valence band either oxidize the water to produce hydroxyl radical or pollutant, whereas excited electrons reduce the adsorbed oxygen on the photocatalyst in the conduction band [1]. Till date a wide range of metal oxide/semiconductor-based nanomaterials have been explored for the photocatalytic degradation of harmful and toxic organic pollutants into the non-toxic products [2,3]. The aim of this work was to investigate removal of the herbicide fluroxypyr from double distilled water in the presence of novel TiO2, MgO and ZnO nanoparticles under UV and simulated solar irradiation. It was found that TiO2 photocatalyst showed higher photocatalytic activity for removal of fluroxypyr from water compared with MgO and ZnO. However, a major drawback of photocatalyst is that it has higher rate of recombination of photogenerated electron-hole pairs, which suppressed its catalytic potential [1,4]. Because of that it was investigated the photodegradation behaviour of fluroxypyr in aquatic systems using UV and simulated solar irradiation in the presence of TiO2/(NH4)2S208. The efficiency of elimination the herbicide from double distilled water was monitored by UFLC–DAD technique.  Acknowledgments This work was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Project No. 172042).  References [1] R. Gusain, K. Gupta, P. Joshi, O.P. Khatri, Adv. Colloid. Interf. Sci. 272 (2019) 102009. [2] S. Ahmed, M.G. Rasul, R. Brown, M.A. Hashib, J. Environ. Manag. 92 (2011) 311. [3] U.I. Gaya, A.H. Abdullah, J. Photochem. Photobiol. C Photchem. Rev. 9 (2008) 1. [4] S. Ahmed, M.G. Rasul, W.N. Martens, R. Brown, M.A. Hashib, Desalination 261 (2010)    

Photocatalytic activity of metal oxide nanoparticles for removal of the herbicide fluroxypyr from water

http://acta.bibl.u-szeged.hu/64799/1/proceedings_of_isaep_2019_123.pdf

Photocatalytic activity of metal oxide nanoparticles for removal of the herbicide fluroxypyr from water

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