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Extreme biomimetics: Preservation of molecular detail in centimeter-scale samples of biological meshes laid down by sponges
Petrenko, I.; Summers, A.P.; Simon, P.; Zóltowska-Aksamitowska, S.; Motylenko, M.; Schimpf, C.; Rafaja, D.; Roth, F.; Kummer, K.; Brendler, E.; Pokrovsky, O.S.; Galli, R.; Wysokowski, M.; Meissner, H.; Niederschlag, E.; Joseph, Y.; Molodtsov, S.; Ereskovsky, A.V.; Sivkov, V.; Nekipelov, S.; Petrova, O.; Volkova, O.; Bertau, M.; Kraft, M.; Rogalev, A.; Kopani, M.; Jesioniowski, T.; Ehrlich, H. (2019). Extreme biomimetics: Preservation of molecular detail in centimeter-scale samples of biological meshes laid down by sponges. Science Advances 5(10): eaax2805. https://dx.doi.org/10.1126/sciadv.aax2805
In: Science Advances. AAAS: New York. ISSN 2375-2548; e-ISSN 2375-2548, meer
Peer reviewed article  
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  • Petrenko, I.
  • Summers, A.P.
  • Simon, P.
  • Zóltowska-Aksamitowska, S.
  • Motylenko, M.
  • Schimpf, C.
  • Rafaja, D.
  • Roth, F.
  • Kummer, K.
  • Brendler, E.
  • Pokrovsky, O.S.
  • Galli, R.
  • Wysokowski, M.
  • Meissner, H.
  • Niederschlag, E.
  • Joseph, Y.
  • Molodtsov, S.
  • Ereskovsky, A.V.
  • Sivkov, V.
  • Nekipelov, S.
  • Petrova, O.
  • Volkova, O.
  • Bertau, M.
  • Kraft, M.
  • Rogalev, A.
  • Kopani, M.
  • Jesioniowski, T.
  • Ehrlich, H.
Abstract
    Fabrication of biomimetic materials and scaffolds is usually a micro- or even nanoscale process; however, most testing and all manufacturing require larger-scale synthesis of nanoscale features. Here, we propose the utilization of naturally prefabricated three-dimensional (3D) spongin scaffolds that preserve molecular detail across centimeter-scale samples. The fine-scale structure of this collagenous resource is stable at temperatures of up to 1200°C and can produce up to 4 × 10–cm–large 3D microfibrous and nanoporous turbostratic graphite. Our findings highlight the fact that this turbostratic graphite is exceptional at preserving the nanostructural features typical for triple-helix collagen. The resulting carbon sponge resembles the shape and unique microarchitecture of the original spongin scaffold. Copper electroplating of the obtained composite leads to a hybrid material with excellent catalytic performance with respect to the reduction of p-nitrophenol in both freshwater and marine environments.
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