In situ photoelectrochemical measurement of phthalic acid on titania
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An in situ photoelectrochem. method is proposed to det. adsorbed phthalic acid (PA) on the TiO2 surface in a sensitive, reproducible and accurate manner. The pre-adsorbed PA in the dark and the diffused PA from org. soln. can be mineralized simultaneously under UV illumination due to the strong UV-induced oxidn. power of TiO2. By controlling the UV illumination, the amt. of adsorbed PA on TiO2 surface was detd. in the presence of PA in a small time scale (e.g., seconds), eliminating the washing step after the adsorption reaction. This provides a convenient and effective alternative to study adsorption behavior in low concns. on TiO2. The proposed method was applied to det. the adsorption equil. const. of PA.
Journal of Photochemistry and Photobiology A: Chemistry
© 2009 Elsevier B.V.. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Colloid and Surface Chemistry
Transport Properties and Non-Equilibrium Processes