Synthesis and Photoelectrocatalytic Applications of TiO2/ZnO/Diatomite Composites

ZnO and TiO2 are semiconductor nanomaterials that widely used in photocatalysis. However, the relatively high recombination rate low quantum yield of photogenerated electron–hole pairs limit their practical applications. In this study, a series TiO2/ZnO/diatomite composites with various compositions were successfully prepared via two-step precipitation method. They exhibited stronger UV–visible absorption properties substantially lower fluorescence intensities than those ZnO/diatomite, which was mainly due to composite system. The reaction intermediates methylene blue detected by liquid chromatography–mass spectrometry, degradation process determined. best catalyst for gaseous methylbenzene acetone. acetone product determined be acetaldehyde gas spectrometry. results show good photocatalytic both pollutants harmful volatile gases. When applied hydrogen oxygen evolution reactions, retained photoresponsivity electrolytic efficiency.