Oxidation of Sulfonamides in Aqueous Solution by UV-TiO2-Fe(VI)
Joint Authors
Zhang, Tuqiao
Zhang, Kejia
Gao, Naiyun
Ma, Yan
Li, Cong
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-08-11
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The photocatalytic degradation of sulfonamides in aqueous TiO2 suspension under UV irradiation has been investigated using potassium ferrate as electron acceptors.
The results showed that the stability of Fe(VI) is dependent on pH significantly, and the stability reduces obviously in the presence of UV-TiO2.
The experiments indicated that Fe(VI) could effectively scavenge the conduction band electrons from the surface of TiO2.
The photocatalytic oxidation of sulfonamides with Fe(VI) was found to be much faster than that without Fe(VI).
The SD, SM, and SMX concentration was greatly reduced by 89.2%, 83.4%, and 82.0%, respectively, after 10 min with UV-TiO2-Fe(VI), comparing to 65.2%, 66.0%, and 71.9%, respectively, with Fe(VI) only in the dark and 71.3%, 72.7%, and 76.0%, respectively, with UV-TiO2.
The pH value of solution significantly influenced the sulfonamides degradation in UV-TiO2-Fe(VI) system.
The degradation amount of sulfonamides after 10 min was a maximum at pH 7.
The intermediate products of sulfonamides oxidation by UV-TiO2-Fe(VI) were analysed by LC-HESI-MS-MS and the results suggested that a majority of sulfonamides turned into large-molecule products without complete mineralization.
American Psychological Association (APA)
Ma, Yan& Zhang, Kejia& Li, Cong& Zhang, Tuqiao& Gao, Naiyun. 2015. Oxidation of Sulfonamides in Aqueous Solution by UV-TiO2-Fe(VI). BioMed Research International،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1057449
Modern Language Association (MLA)
Ma, Yan…[et al.]. Oxidation of Sulfonamides in Aqueous Solution by UV-TiO2-Fe(VI). BioMed Research International No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1057449
American Medical Association (AMA)
Ma, Yan& Zhang, Kejia& Li, Cong& Zhang, Tuqiao& Gao, Naiyun. Oxidation of Sulfonamides in Aqueous Solution by UV-TiO2-Fe(VI). BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1057449
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1057449