Extreme biomimetic approach for synthesis of nanocrystalline chitin-(Ti,Zr)O^sub 2^ multiphase composites

This work presents an extreme biomimetics route for the modification of the surface of fibre-based scaffolds of poriferan origin by the creation of novel nanostructured multiphase biocomposites. The exceptional thermal stability of the nanostructured sponge chitin allowed for the formation of a nove...

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Published inMaterials chemistry and physics Vol. 188; p. 115
Main Authors Wysokowski, Marcin, Motylenko, Mykhaylo, Rafaja, David, Koltsov, Iwona, Stöcker, Hartmut, Szalaty, Tadeusz J, Bazhenov, Vasilii V, Stelling, Allison L, Beyer, Jan, Heitmann, Johannes, Jesionowski, Teofil, Petovic, Slavica, Đurović, Mirko, Ehrlich, Hermann
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier BV 15.02.2017
Subjects
Anatase
Biomedical materials
Biomimetics
Biopolymers
Chitin
Composite materials
Crystallization
Differential scanning calorimetry
Heat measurement
High resolution
Mass spectrometry
Multiphase
Nanostructured materials
Photoluminescence
Polymers
Scaffolds
Studies
Thermal stability
Thermogravimetry
Titanium oxides
Transmission electron microscopy
Zirconium dioxide
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Summary:This work presents an extreme biomimetics route for the modification of the surface of fibre-based scaffolds of poriferan origin by the creation of novel nanostructured multiphase biocomposites. The exceptional thermal stability of the nanostructured sponge chitin allowed for the formation of a novel nanocrystalline chitin-(Ti,Zr)O2 composite with a well-defined nanoscale structure under hydrothermal conditions (160 °C). Using a combination of experimental techniques, including X-ray diffraction, scanning electron microscopy, high resolution transmission electron microscopy, EDX mapping and near-edge electron loss spectroscopy (ELNES) in TEM and thermogravimetry/differential scanning calorimetry coupled with mass spectrometry; we showed that this bioorganic scaffold facilitates selective crystallization of TiO2, predominantly in form of anatase, over the monoclinic zirconium dioxide (baddeleyite). The control of the crystal morphology through the chitin templates is also demonstrated. Obtained samples were characterized in terms of their photoluminescent properties and photocatalytic performance. These data confirm the high potential of the extreme biomimetics approach for developing a new generation of multiphase biopolymer-based nanostructured materials.
ISSN:0254-0584
1879-3312