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Article Dans Une Revue Science Advances Année : 2019

Extreme biomimetics: Preservation of molecular detail in centimeter-scale samples of biological meshes laid down by sponges

Résumé

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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hal-02306377 , version 1 (19-11-2021)

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Paternité - Pas d'utilisation commerciale

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Iaroslav Petrenko, Adam P. Summers, Paul Simon, Sonia Żółtowska-Aksamitowska, Mykhailo Motylenko, et al.. Extreme biomimetics: Preservation of molecular detail in centimeter-scale samples of biological meshes laid down by sponges. Science Advances , 2019, 5 (10), pp.eaax2805. ⟨10.1126/sciadv.aax2805⟩. ⟨hal-02306377⟩
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