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Updated: May 22, 2026

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate
Published on: February 23, 2016
Degradation of perchlorate in water using aqueous multivalent titanium: effect of titanium type, ionic strength, and
Sung Hyuk Park1, Bill Batchelor, Chunwoo Lee
1Environmental & Energy Research Team, GS Engineering & Construction Research Center, Yongin-si, Gyunggi-do 449-831, Republic of Korea.
Abstract:
In this study, chemical degradation of perchlorate was investigated using partially oxidized titanium ions (Ti(II) and Ti(III)). Results of UV spectra showed that the patterns of absorbance at all ratios of F/Ti(0) were similar each other, except the lowest F/Ti(0) of 0.5 (25 mM F(-)) where mixture of Ti(II) and Ti(III) might be present, resulted in shift of the peak to wavelength of 480 nm. The rate of perchlorate degradation was fastest at lowest F/Ti(0) ratio. Among catalysts investigated, only rhenium enhanced the perchlorate degradation in the presence of Ti(II), but no effect of catalysts in Ti(III). In addition, high ionic strength did not enhance the perchlorate-Ti(III) reaction, but high acid concentration did. Addition of solid acid catalysts (SACs) to Ti(III) solution showed slower perchlorate degradation, probably due to decrease in Ti(III) concentration by adsorption onto SAC. Rate constants for perchlorate degradation in Ti(III) were twofold higher than in Ti(II) when 5 N HCl used.
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