The Diatom Peptide R5 Fabricates Two-Dimensional Titanium Dioxide Nanosheets

Mikkel Bregnhøj, Helmut Lutz, Steven J. Roeters, Ingo Lieberwirth, Rolf Mertig, Tobias Weidner*

*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Abstract

Diatoms use peptides based on the protein silaffin to fabricate their silica cell walls. To the interest of material scientists, silaffin peptides can also produce titanium dioxide nanoparticles. Peptide-based synthesis could present an environmentally friendly route to the synthesis of titanium dioxide nanomaterials with potential applications in water splitting and for biocompatible materials design. Two-dimensional nanomaterials have exceptional surface-to-volume ratios and are particularly suited for these applications. We here demonstrate how the silaffin peptide R5 can precipitate free-standing and self-supported sheets of titanium dioxide at the air-water interface, which are stable over tens of micrometers.

Original languageEnglish
JournalThe Journal of Physical Chemistry Letters
Volume13
Issue22
Pages (from-to)5025-5029
Number of pages5
ISSN1948-7185
DOIs
Publication statusPublished - Jun 2022

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