Abstract In this study, we investigated the photocatalytic activity of TiO 2 immobilized on quartz crystal microbalances (QCMs) in vacuum. The photocatalytic activity under vacuum and atmospheric conditions was evaluated by monitoring the mass change in citric acid using the QCM method. The results revealed that TiO 2 /QCM successfully removed contaminants in both conditions, with maximum mass removal of 2 μ g/cm 2 in vacuum. This performance indicates the potential of TiO 2 for space applications because the maximum mass removal is comparable to the typical requirements for spacecraft. Furthermore, our findings suggest that QCMs serve as an efficient method for quantitatively evaluating photocatalytic activity in vacuum and developing high-performance photocatalytic materials.

    Highlights TiO 2 immobilized on QCMs, exhibiting photocatalytic activity. Vacuum/atmosphere testing showed strong performance. Mass removal in vacuum: 2 μ g/cm 2 , matching spacecraft needs. QCMs proposed for photocatalytic material evaluation.


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    Titel :

    Estimation of photocatalytic activity of TiO 2 in vacuum using a quartz crystal microbalance technique for space applications


    Beteiligte:

    Erschienen in:

    Acta Astronautica ; 213 ; 29-34


    Erscheinungsdatum :

    2023-08-28


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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