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Protection of organic pigments against photocatalysis by encapsulation

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Abstract

A model organic pigment (β copper phthalocyanine) was encapsulated by silica using water glass as a precursor. It is shown that the thickness, porosity and uniformity of silica shells (coatings) around individual pigment particles depend significantly on pH and temperature of synthesis. It is further demonstrated that the obtained silica shells can serve as an efficient protection against the highly reactive products of photocatalysis. The degree of protection depends not only on the thickness of silica shells but also on their porosity.

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Acknowledgments

This work has been financially supported by the Slovenian Research Agency (ARRS).

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Authors and Affiliations

  1. National Building and Civil Engineering Institute of Slovenia, Dimičeva 12, Ljubljana, Slovenia

    Erika Švara Fabjan, Andrijana Sever Škapin & Luka Škrlep

  2. TRC JUB d.o.o., Dol pri Ljubljani 28, 1262, Dol pri Ljubljani, Slovenia

    Petra Živec

  3. Jožef Stefan Institute, Jamova cesta 39, Ljubljana, Slovenia

    Miran Čeh

  4. National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia

    Miran Gaberšček

Authors
  1. Erika Švara Fabjan
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  2. Andrijana Sever Škapin
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  3. Luka Škrlep
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  4. Petra Živec
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  5. Miran Čeh
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  6. Miran Gaberšček
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Correspondence to Miran Gaberšček.

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Fabjan, E.Š., Škapin, A.S., Škrlep, L. et al. Protection of organic pigments against photocatalysis by encapsulation. J Sol-Gel Sci Technol 62, 65–74 (2012). https://doi.org/10.1007/s10971-012-2684-z

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  • DOI: https://doi.org/10.1007/s10971-012-2684-z

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