Photoreduction of Cr(VI) Ions in Aqueous Solutions by UVTiO2 Photocatalytic Processes
Joint Authors
Lin, Po Hsiang
Shen, Yung-Shuen
Ma, Chih-Ming
Source
International Journal of Photoenergy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-29
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
This study discussed the photoreduction of Cr(VI) ions in aqueous solutions by UV/TiO2 photocatalytic processes under various operational factors.
Experimental results showed that the removal rate of Cr(VI) increased with decreasing solution pH values and with increasing dosages of organic compounds, indicating that the recombination rate of electrons and h+ can be retarded in the reaction systems by the addition of the scavenger, thus raising the reaction rate of Cr(VI).
The relationship of the chemical reaction rate of Cr(VI), TiO2 dosage, and changes of Cr(VI) concentration was expressed by the pseudo-first-order kinetic equation.
Comparing the experimental results of two different doping metals in modified TiO2 photoreduction systems, the removal rate of Cr(VI) by the Ag/TiO2 process is larger, possibly because the electron transferring ability of Ag is superior to that of Cu.
However, the photoreduction rates of Cr(VI) by modified UV/TiO2 processes are worse than those by a nonmodified commercial UV/TiO2 process.
American Psychological Association (APA)
Ma, Chih-Ming& Shen, Yung-Shuen& Lin, Po Hsiang. 2012. Photoreduction of Cr(VI) Ions in Aqueous Solutions by UVTiO2 Photocatalytic Processes. International Journal of Photoenergy،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-467633
Modern Language Association (MLA)
Ma, Chih-Ming…[et al.]. Photoreduction of Cr(VI) Ions in Aqueous Solutions by UVTiO2 Photocatalytic Processes. International Journal of Photoenergy No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-467633
American Medical Association (AMA)
Ma, Chih-Ming& Shen, Yung-Shuen& Lin, Po Hsiang. Photoreduction of Cr(VI) Ions in Aqueous Solutions by UVTiO2 Photocatalytic Processes. International Journal of Photoenergy. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-467633
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-467633