Nowacki Krzysztof, Kubiak Anita, Nowicki Marek, Tsurkan Dmitry, Ehrlich Hermann, Jesionowski Teofil
Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland.
Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland.
Biomimetics (Basel). 2024 Jun 25;9(7):387. doi: 10.3390/biomimetics9070387.
The skeletons of marine sponges are ancient biocomposite structures in which mineral phases are formed on 3D organic matrices. In addition to calcium- and silicate-containing biominerals, iron ions play an active role in skeleton formation in some species of bath sponges in the marine environment, which is a result of the biocorrosion of the metal structures on which these sponges settle. The interaction between iron ions and biopolymer spongin has motivated the development of selected extreme biomimetics approaches with the aim of creating new functional composites to use in environmental remediation and as adsorbents for heavy metals. In this study, for the first time, microporous 3D spongin scaffolds isolated from the cultivated marine bath sponge were used for electro-assisted deposition of iron oxides such as goethite [α-FeO(OH)] and lepidocrocite [γ-FeO(OH)]. The obtained iron oxide phases were characterized with the use of scanning electron microscopy, FTIR, and X-ray diffraction. In addition, mechanisms of electro-assisted deposition of iron oxides on the surface of spongin, as a sustainable biomaterial, are proposed and discussed.
海洋海绵的骨骼是古老的生物复合结构，其中矿物相在三维有机基质上形成。除了含钙和含硅的生物矿物外，铁离子在海洋环境中某些沐浴海绵物种的骨骼形成中发挥着积极作用，这是这些海绵所附着的金属结构发生生物腐蚀的结果。铁离子与生物聚合物海绵硬蛋白之间的相互作用推动了特定极端仿生方法的发展，旨在制造用于环境修复和作为重金属吸附剂的新型功能复合材料。在本研究中，首次将从养殖的海洋沐浴海绵中分离出的微孔三维海绵硬蛋白支架用于电辅助沉积诸如针铁矿[α-FeO(OH)]和纤铁矿[γ-FeO(OH)]等铁氧化物。使用扫描电子显微镜、傅里叶变换红外光谱和X射线衍射对所得的铁氧化物相进行了表征。此外，还提出并讨论了铁氧化物在作为可持续生物材料的海绵硬蛋白表面上电辅助沉积的机制。
