Preparation and photocatalytic properties of dual-crystalline glass-ceramics containing NASICON-type KTi2(PO4)3 and anatase-type TiO2
Source abstract
Abstract
The K 2O-ZnO-TiO 2-P 2O 5 system glasses with different components were successfully prepared by the conventional melt-quenching method. According to the results of DSC, two-step heat treatment was carried out, and NASICON-type KTi 2(PO 4) 3 were precipitated in the glass matrix as the main crystal phase. In addition, anatase-type TiO 2 crystals were also detected in some glass ceramics. The surface grain morphology of the glass-ceramics was observed by SEM, and the optical band gap was estimated by UV–vis DRS. Under the irradiation of a high-pressure mercury lamp, the photodegradation ability of the glass-ceramics to methylene blue (MB) solution was investigated. KTi 2(PO 4) 3 and anatase phases were the reasons for the photocatalytic activity of the glass-ceramics, and the MB degradation rate can reach 55–79% after illumination for 120 min. At the same time, the glass-ceramics were separated from the solution by settling for 15 min. The results show that prepared glass-ceramics have excellent UV photocatalytic performance and can be easily separated from the aqueous medium, which has potential application in the purification of organic dye wastewater.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Luminescence Properties of Advanced Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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