Optimising processing conditions for the functionalisation of photocatalytic glazes by ZnO nanoparticle deposition





ZnO, Nanospheres, Photocatalysis, Ceramic tiles, Operation conditions


ZnO nanospheres were synthesised and then deposited by both single- and double-fire fast processes on as-prepared ceramic substrates. The photocatalytic degradation of resazurin ink was tested under UV light. The single-fired samples did not show any evidence of photocatalytic activity because the nanoparticles melted during sintering at 1210°C. The double-fire ZnO spray-coating method successfully produced glazed materials with an active ZnO surface layer despite the high sintering temperature. The influence of experimental parameters, including the ZnO nanoparticle loading (0.03 to 1 mg/cm2) and firing temperature (650 to 800°C), were also investigated. Samples with a ZnO loading of 1 g/cm2 fired at 650°C showed the best photocatalytic activity. Increasing the temperature to 700 and 800°C led to the coalescence of ZnO nanoparticles, which reduced the photocatalytic activity.


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How to Cite

Guzmán-Carrillo, H. ., Jiménez Relinque, E. ., Manzano-Ramírez, A. ., Castellote, M. ., & Romero-Pérez, M. . (2021). Optimising processing conditions for the functionalisation of photocatalytic glazes by ZnO nanoparticle deposition. Materiales De Construcción, 71(344), e261. https://doi.org/10.3989/mc.2021.04921



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