pH Effect on the Photocatalytic Oxidation of Butan- 2 - ol over Naked Titanium Dioxide

Abstract

The effect of pH on the photocatalytic oxidation of butan-2-ol over naked titanium
dioxide has been investigated. The apparatus which is used in the photocatalytic reaction
has a precies temperature control which gives a high precision for the reaction .
Spectrophotometric method was used in the determination of amount of the product
formed, this method is based on the formation of 2,4 – dinitrophenyl hydrazone of the
produced carbonyl product, followed by the addition of alcoholic potassium hydroxide to
give a wine colour which is measured by spectrophotometric method .
The measurements were done at 298 K using different buffer solutions, and irradiation
with ultraviolet light from mercury vapour lamp( 150 ) Watt