Abstract
We studied the effect of native defects and photocatalytic activity of ZnO. Optical properties and dye degradation experiments have been performed on eight different ZnO nanoparticles. Photoluminescence (PL) spectra were measured for characterization of optical properties. To measure the photocatalytic activity, suspensions of ZnO nanoparticles in methyl orange (MO) solution were placed under UV illumination, and absorption measurements were performed after different illumination time. The experiments show a general tendency that ZnO nanoparticles with higher overall PL intensity exhibit better photocatalytic performance in degradation of MO, which suggests that native defects have an influence on photocatalytic activities of ZnO nanoparticles.
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