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Semiconductor-mediated Photocatalyzed degradation of a herbicide derivative, chlorotoluron, in aqueous suspensions.
Environ Sci Technol. 2006 Aug 01; 40(15):4765-70.ES

Abstract

The photocatalytic degradation of a herbicide derivative, chlorotoluron [3-(3-chloro-4-methylphenyl)-1,1-dimethylurea, 1], has been investigated in aqueous suspensions of titanium dioxide (TiO2) under a variety of conditions. The degradation was studied by monitoring the change in substrate concentration employing UV spectroscopic analysis technique and depletion in total organic carbon (TOC) content as a function of irradiation time. The degradation kinetics of the model compound was investigated under different conditions such as type of TiO2, pH, catalyst concentration, substrate concentration, temperature, and in the presence of different electron acceptors such as hydrogen peroxide (H2O2), potassium persulfate (K2S2O8), and potassium bromate (KBrO3) besides molecular oxygen. TiO2 Degussa P25 was found to be a more efficient photocatalyst for the degradation of the model compound as compared with other photocatalysts. The degradation products were analyzed using GC/MS analysis technique and probable pathways for the formation of different products have been proposed.

Authors+Show Affiliations

Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India.No affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16913136

Citation

Haque, Malik M., et al. "Semiconductor-mediated Photocatalyzed Degradation of a Herbicide Derivative, Chlorotoluron, in Aqueous Suspensions." Environmental Science & Technology, vol. 40, no. 15, 2006, pp. 4765-70.
Haque MM, Muneer M, Bahnemann DW. Semiconductor-mediated Photocatalyzed degradation of a herbicide derivative, chlorotoluron, in aqueous suspensions. Environ Sci Technol. 2006;40(15):4765-70.
Haque, M. M., Muneer, M., & Bahnemann, D. W. (2006). Semiconductor-mediated Photocatalyzed degradation of a herbicide derivative, chlorotoluron, in aqueous suspensions. Environmental Science & Technology, 40(15), 4765-70.
Haque MM, Muneer M, Bahnemann DW. Semiconductor-mediated Photocatalyzed Degradation of a Herbicide Derivative, Chlorotoluron, in Aqueous Suspensions. Environ Sci Technol. 2006 Aug 1;40(15):4765-70. PubMed PMID: 16913136.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Semiconductor-mediated Photocatalyzed degradation of a herbicide derivative, chlorotoluron, in aqueous suspensions. AU - Haque,Malik M, AU - Muneer,Mohd, AU - Bahnemann,Detlef W, PY - 2006/8/18/pubmed PY - 2007/3/17/medline PY - 2006/8/18/entrez SP - 4765 EP - 70 JF - Environmental science & technology JO - Environ Sci Technol VL - 40 IS - 15 N2 - The photocatalytic degradation of a herbicide derivative, chlorotoluron [3-(3-chloro-4-methylphenyl)-1,1-dimethylurea, 1], has been investigated in aqueous suspensions of titanium dioxide (TiO2) under a variety of conditions. The degradation was studied by monitoring the change in substrate concentration employing UV spectroscopic analysis technique and depletion in total organic carbon (TOC) content as a function of irradiation time. The degradation kinetics of the model compound was investigated under different conditions such as type of TiO2, pH, catalyst concentration, substrate concentration, temperature, and in the presence of different electron acceptors such as hydrogen peroxide (H2O2), potassium persulfate (K2S2O8), and potassium bromate (KBrO3) besides molecular oxygen. TiO2 Degussa P25 was found to be a more efficient photocatalyst for the degradation of the model compound as compared with other photocatalysts. The degradation products were analyzed using GC/MS analysis technique and probable pathways for the formation of different products have been proposed. SN - 0013-936X UR - https://www.unboundmedicine.com/medline/citation/16913136/Semiconductor_mediated_Photocatalyzed_degradation_of_a_herbicide_derivative_chlorotoluron_in_aqueous_suspensions_ L2 - https://doi.org/10.1021/es060051h DB - PRIME DP - Unbound Medicine ER -