Effects of particle dispersion on the measurement of semi-conductor photocatalytic activity
TA Egerton, RW Harrison, SE Hill, JA Mattinson… - … of Photochemistry and …, 2010 - Elsevier
Milling changes the particle size distribution of TiO2 suspensions and this is reflected in the
changed optical characteristics. Typically, the visible transmission is increased, as large
TiO2 agglomerates are broken down, and the UV absorption is increased. It has been
shown that the rates of dye decolouration, alcohol oxidation, and carboxylic acid
degradation are all changed by milling. For all the TiO2's tested (anatase and rutile, surface
areas from∼ 8 to 140m2g− 1) photocatalytic oxidation of propan-2-ol is reduced by milling. It …
changed optical characteristics. Typically, the visible transmission is increased, as large
TiO2 agglomerates are broken down, and the UV absorption is increased. It has been
shown that the rates of dye decolouration, alcohol oxidation, and carboxylic acid
degradation are all changed by milling. For all the TiO2's tested (anatase and rutile, surface
areas from∼ 8 to 140m2g− 1) photocatalytic oxidation of propan-2-ol is reduced by milling. It …
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