A5031005447- Marine Sponges and Natural Products
- Marine Biology and Environmental Chemistry
- Calcium Carbonate Crystallization and Inhibition
- Diatoms and Algae Research
- Bone Tissue Engineering Materials
- Synthetic Organic Chemistry Methods
- Silicone and Siloxane Chemistry
- Quantum Dots Synthesis And Properties
- Mesoporous Materials and Catalysis
- Silk-based biomaterials and applications
- Polymer Surface Interaction Studies
- Physiological and biochemical adaptations
- Conducting polymers and applications
- Paleontology and Stratigraphy of Fossils
- Collagen: Extraction and Characterization
- X-ray Diffraction in Crystallography
- Photonic Crystals and Applications
- Lignin and Wood Chemistry
- Microbial Natural Products and Biosynthesis
- Coral and Marine Ecosystems Studies
- Iron oxide chemistry and applications
- Supramolecular Self-Assembly in Materials
- Supercapacitor Materials and Fabrication
- Enzyme-mediated dye degradation
- Advanced Glycation End Products research
European X-Ray Free-Electron Laser
2017-2021
TU Bergakademie Freiberg
2013-2018
Institute of Experimental Physics of the Slovak Academy of Sciences
2015
Poznań University of Technology
2014
Far Eastern Federal University
2006-2012
TU Dresden
2010
Sponges are probably the earliest branching animals and their fossil record dates back to Precambrian. Identifying skeletal structure composition is thus a crucial step in improving our understanding of early evolution metazoans. Here, we present discovery 505–million-year-old chitin, found exceptionally well preserved Vauxia gracilenta sponges from Middle Cambrian Burgess Shale. Our new findings indicate that, given right fossilization conditions, chitin stable for much longer than...
Novel, functional materials based on chitin of marine origin and lignin were prepared. The synthesized subjected to physicochemical, dispersive-morphological electrokinetic analysis. results confirm the effectiveness proposed method synthesis chitin/lignin materials. Mechanism modification by is formation hydrogen bonds between lignin. Additionally, studied from perspective waste water treatment. synthetic presented in this work shows an attractive facile route for producing low-cost...
Biological materials are a rewarding area of modern science, yielding both evolutionary insights and inspiration for biomimetic research. In particular, biocomposite structures valuable sources novel with unusual chemical properties, they very informative the mechanisms biomineralization. Here we describe unique amorphous silica, crystalline aragonite, chitin from species order Verongida, group marine sponges. The have been analyzed diverse suite techniques, revealing chitinous template...
Investigations of the micro‐ and nanostructures chemical composition sponge skeletons as examples for natural structural biocomposites are fundamental scientific relevance. Recently, we show that some demosponges ( Verongula gigantea, Aplysina sp.) glass sponges Farrea occa, Euplectella aspergillum ) possess chitin a component their skeletons. The main practical approach used isolation was based on alkali treatment corresponding external layers spicules material with aim obtaining...
β-Chitinous scaffolds isolated from the skeleton of marine cephalopod Sepia officinalis were used as a template for in vitro formation ZnO under conditions (70 °C) which are extreme biological materials. Novel β-chitin/ZnO film-like composites prepared first time by hydrothermal synthesis, and thoroughly characterized using numerous analytical methods including Raman spectroscopy, HR-TEM XRD. We demonstrate growth hexagonal nanocrystals on β-chitin substrate. Our chitin/ZnO presented this...
Chitinous scaffolds isolated from the skeleton of marine sponge Aplysina cauliformis were used as a template for in vitro formation zirconium dioxide nanophase ammonium zirconium(IV) carbonate (AZC) under extreme conditions (150 °C). These novel zirconia–chitin based composites prepared first time using hydrothermal synthesis, and thoroughly characterized plethora analytical methods. The thermostability chitinous 3D matrix makes it ideal use synthesis monoclinic nanostructured precursors...
The characteristic mineral-free fibrous skeletons (made of structural protein-spongin) <italic>H. communis</italic> (Demospongiae: Porifera) was used as a template in hydrothermal synthesis hematite (α-Fe<sub>2</sub>O<sub>3</sub>) nanoparticles.
A new chitosan/sponge chitin – based membrane (CS/CH membrane) was prepared <italic>via</italic> the casting method for first time.
Chitin of poriferan origin is a unique and thermostable biological material. It also represents an example renewable materials source due to the high regeneration ability Aplysina sponges under marine ranching conditions. Chitinous scaffolds isolated from skeleton sponge aerophoba were used as template for in vitro formation Fe2O3 conditions (pH ∼ 1.5, 90 °C) which are extreme materials. Novel chitin–Fe2O3 three dimensional composites, have been prepared first time using hydrothermal...
Diatoms are considered unicellular eukaryotic organisms exclusively depositing biogenic silica. Heretofore there has been no report of calcification by these algae. Here it is shown that calcium carbonate within the stalks Didymosphenia geminata , a nuisance species prolifically colonized streams and rivers globally, in origin occurs as network calcite nanofibers. The nanofibrous framework mineralized polysaccharide matrix imparts mechanical support to stalks, providing stability variable...
Abstract The hierarchically structured glass sponge Caulophacus species uses the first known example of a silica and calcite biocomposite to join spicules its skeleton together. In stalk body this poorly deep‐sea siliceous are modified by addition conical seeds, which then form basis for further secretion spinose region. Spinose regions on adjacent joined crosslinks, leading unusually strong cross‐spicule linkages. biomaterials implications it is now clear, from record biomineral other than...
A holdfast is a root- or basal plate-like structure of principal importance that anchors aquatic sessile organisms, including sponges, to hard substrates. There date little information about the nature and origin sponges' holdfasts in both marine freshwater environments. This work, our knowledge, demonstrates for first time chitin an important structural component within endemic demosponge Lubomirskia baicalensis. Using variety techniques (near-edge X-ray absorption fine structure, Raman,...