Heterogeneous photocatalytic reduction of Fe(VI) in UV-irradiated titania suspensions: effect of ammonia

abstract

• Results of the heterogeneous photocatalytic reduction of Fe(VI) in UV-irradiated TiO2 suspensions in the presence of ammonia are presented. The initial rate of Fe(VI) reduction, R, may be expressed as R = k Fe(VI)[Fe(VI)]1.25 where k Fe(VI) = a[Ammonia]+b), a = 6.0 103 m 0.25 s and b = 4.1 106 m -1.25s-1. The rate constant, k Fe(VI), increases with the ammonia concentration. The photocatalytic oxidation of ammonia is enhanced in the presence of Fe(VI). A mechanism involving Fe(V) as a reactive intermediate is presented which explains the faster photocatalytic oxidation of ammonia in the presence of Fe(VI). Springer 2005.

authors

• Sharma, Virender

published proceedings

• JOURNAL OF APPLIED ELECTROCHEMISTRY

author list (cited authors)

• Sharma, V. K., & Chenay, B.

citation count

• 16

complete list of authors

• Sharma, VK||Chenay, BVN

publication date

• July 2005

publisher

• Springer Nature  Publisher

published in

• Journal of Applied Electrochemistry  Journal

keywords

• Ferrate (VI)
• Ferrate(V)
• Mechanism
• Remediation
• TiO2

Digital Object Identifier (DOI)

• 10.1007/s10800-005-5169-8

start page

• 775

end page

• 781

volume

• 35

issue

• 7-8

URL

• http://dx.doi.org/10.1007/s10800-005-5169-8