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Effect of ZnO morphology on photocatalytic activity determined by no oxidation

Kahraman, Orhun
In this thesis, the ISO 22197-1 standard test method -for assessing photocatalytic activity by NO oxidation- was used to determine the activity of a series of ZnO samples prepared by a wet chemical synthesis method. The crystallinity of the samples was monitored by XRD and the morphology of the samples was investigated by SEM analysis. NO oxidation measurements revealed that the samples having long range ordered hexagonal morphology shown better photocatalytic activity than those with flake-like morphology. Further analysis suggested that the 001 plane of wurtzite is the most active plane for photocatalytic NO oxidation.