Self-cleaning properties of ZnO/TiO2 thin film on glass slide substrate

Student Classification


Faculty Mentor

Dr.Bishnu P Bastakoti



Document Type


Publication Date

Fall 2019


It is known that the ability of a surface to self-clean usually relies upon the hydrophobicity or hydrophilicity of the surface. Therefore, for a surface to achieve the self-cleaning ability, the surface microstructures must be regulated to promote free, spontaneous movement of any liquid droplets on the surface, allowing it to extract any contaminants from its surface. Here, a simple method for preparing an artificial self-cleaning surface is presented as the involved protocol involves spin-coating of glass slides with even layers of synthesized porous ZnO/TiO2 metal oxides. Pure porous ZnO and TiO2 were also prepared for comparison. Electron microscopy and contact angle measurements were used to characterize the porous film. The synergic contributions of ZnO and TiO2 phases are very effective for upgrading the photocatalytic performance. It is expected that the characterization of each slide in regards to each different porous material, will help to determine the ability of the surface to clean i.e. wettability.

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