Photocatalytic and self-cleaning properties of glazed ceramic tiles coated with TiO2 and Al-doped TiO2 thin films
Source abstract
Abstract
The undoped and Al-doped TiO2 coatings on glazed ceramic tiles have been prepared by sol–gel and spray coating process. The samples were heat treated at 550 °C with 15-min soaking. The coatings were characterized for microstructure, surface morphology, elemental analysis, and thickness using the grazing-incidence X-ray diffraction (GIXRD), field emission scanning electron microscope (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), and scanning electron microscope (SEM), respectively. For the Al-doped TiO2 coating, only anatase phase was identified, but the undoped TiO2 coating exhibited a mix of anatase and rutile. The Al-doped TiO2 coating exhibited a homogeneous and relatively crack-free morphology, but the undoped TiO2 coating had significant cracks. The elemental analysis confirmed Ti, O, and Al in the coatings. The undoped and Al-doped TiO2 films had uniform thickness. The photocatalytic decomposition of methylene blue and the photo-induced wettability of the samples were investigated using the UV–Vis spectrophotometer and water contact angle measurement, respectively. The Al-doped TiO2 coating exhibited more efficient photocatalytic activity and hydrophilicity than the other samples after the UV irradiation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Pigment Synthesis and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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