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Photocatalytic degradation of carbofuran using semiconductor oxides.
J Hazard Mater. 2007 May 08; 143(1-2):240-5.JH

Abstract

The photocatalytic degradation of carbofuran (2,3-dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate) was investigated in an aqueous solution using Degussa P-25 TiO2 and ZnO as photocatalysts. The progress of degradation was monitored using TOC analyzer, HPLC, GC-MS and UV-vis spectrophotometer. The effects of various experimental parameters such as initial concentration of carbofuran, pH of the solution, catalyst loading and light intensity were systematically studied in order to achieve maximum degradation efficiency. The complete mineralization of carbofuran was confirmed by TOC analyzer. The degradation with ZnO showed less efficiency than TiO2. The formation of NO(3)(-) was identified and quantified using HPLC. In addition, four different intermediates formed during the degradation process were also identified and characterized by GC-MS. The mineralization rate was compared with lamps of wavelength 254 and 365 nm under similar conditions. The rate with 254 nm was observed to be very close to that of 365 nm.

Authors+Show Affiliations

Department of Chemistry, Anna University, Chennai 600 025, India.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

17045739

Citation

Mahalakshmi, M, et al. "Photocatalytic Degradation of Carbofuran Using Semiconductor Oxides." Journal of Hazardous Materials, vol. 143, no. 1-2, 2007, pp. 240-5.
Mahalakshmi M, Arabindoo B, Palanichamy M, et al. Photocatalytic degradation of carbofuran using semiconductor oxides. J Hazard Mater. 2007;143(1-2):240-5.
Mahalakshmi, M., Arabindoo, B., Palanichamy, M., & Murugesan, V. (2007). Photocatalytic degradation of carbofuran using semiconductor oxides. Journal of Hazardous Materials, 143(1-2), 240-5.
Mahalakshmi M, et al. Photocatalytic Degradation of Carbofuran Using Semiconductor Oxides. J Hazard Mater. 2007 May 8;143(1-2):240-5. PubMed PMID: 17045739.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic degradation of carbofuran using semiconductor oxides. AU - Mahalakshmi,M, AU - Arabindoo,Banumathi, AU - Palanichamy,M, AU - Murugesan,V, Y1 - 2006/09/10/ PY - 2006/02/10/received PY - 2006/07/02/revised PY - 2006/09/06/accepted PY - 2006/10/19/pubmed PY - 2007/8/19/medline PY - 2006/10/19/entrez SP - 240 EP - 5 JF - Journal of hazardous materials JO - J Hazard Mater VL - 143 IS - 1-2 N2 - The photocatalytic degradation of carbofuran (2,3-dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate) was investigated in an aqueous solution using Degussa P-25 TiO2 and ZnO as photocatalysts. The progress of degradation was monitored using TOC analyzer, HPLC, GC-MS and UV-vis spectrophotometer. The effects of various experimental parameters such as initial concentration of carbofuran, pH of the solution, catalyst loading and light intensity were systematically studied in order to achieve maximum degradation efficiency. The complete mineralization of carbofuran was confirmed by TOC analyzer. The degradation with ZnO showed less efficiency than TiO2. The formation of NO(3)(-) was identified and quantified using HPLC. In addition, four different intermediates formed during the degradation process were also identified and characterized by GC-MS. The mineralization rate was compared with lamps of wavelength 254 and 365 nm under similar conditions. The rate with 254 nm was observed to be very close to that of 365 nm. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17045739/Photocatalytic_degradation_of_carbofuran_using_semiconductor_oxides_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(06)01049-1 DB - PRIME DP - Unbound Medicine ER -