Time resolved XANES illustrates a substrate-mediated redox process in Prussian blue cultural heritage materials

Gervais Wüst, Claire Justine; Lanquille, Marie-Angélique; Moretti, Giulia; Réguer, Solenn (2016). Time resolved XANES illustrates a substrate-mediated redox process in Prussian blue cultural heritage materials Journal of Physics: Conference Series 712 (2016), 012139, pp. 1-4. 10.1088/1742-6596//712/012139

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The pigment Prussian blue is studied in heritage science because of its capricious fading behavior under light exposure. We show here that XANES can be used to study the photosensitivity of Prussian blue heritage materials despite X-ray radiation damage. We used an original approach based on X-ray photochemistry to investigate in depth the redox process of Prussian blue when it is associated with a cellulosic substrate, as in cyanotypes and watercolors. By modifying cation and proton contents of the paper substrate, we could tune both rate and extent of Prussian blue reduction. These results demonstrate that the photoreduction and fading of Prussian blue is principally mediated by the substrate and its interaction with the oxygen of the environment.

Item Type:

Journal Article (Further Contribution)

Division/Institute:

Bern Academy of the Arts
Bern Academy of the Arts > Institute Materiality in Art and Culture

Name:

Gervais Wüst, Claire Justine;
Lanquille, Marie-Angélique;
Moretti, Giulia and
Réguer, Solenn

Language:

English

Submitter:

Admin import user

Date Deposited:

12 Feb 2020 07:50

Last Modified:

30 Nov 2020 15:20

Publisher DOI:

10.1088/1742-6596//712/012139

ARBOR DOI:

10.24451/arbor.6709

URI:

https://arbor.bfh.ch/id/eprint/6709

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