Parameters Effect on Photocatalytic Reduction Kinetics of Bromate in Aqueous Dispersion of TiO₂

Abstract:

This paper studied the photocatalytic reduction kinetics of bromate in aqueous dispersion of TiO₂ and investigated the effects of experimental parameters, including initial concentration of BrO₃^-, pH, TiO₂ dosage, anion and cation. The results indicate that the process of photocatalytic reduction of bromate follows a zero-order kinetics. In all the investigated experimental parameters, the initial bromate concentration, pH and anion have great effect on the photocatalytic reduction kinetics. The processes of photocatalytic reduction of bromate show the pseudo first-order kinetics at initial bromate concentration of 0.39 μmolL^-1, pH=5.0, or in presence of HCO₃^-/CO₃^2-, NO₃^-, SO₄^2-, respectively.

• Periodical: Advanced Materials Research (Volumes 779-780)
• Pages: 1658-1665
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.779-780.1658
• Online since: September 2013
• Authors: Rong Shu Zhu, Fei Tian, Ling Ling Zhang, Ling Min Yu
• Keywords: BrO₃^-, Photocatalytic Reduction Kinetics, Titanium Dioxide (TiO₂)

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