Biologically Derived and Bio-inspired Nanomaterials
Abstract
Biological organisms naturally synthesize complex, hierarchical, multifunctional materials through mineralization processes at ambient conditions and under physiological pH. One such example is the ultrahard and wear-resistant radular teeth found in mollusks, which are used to scrape against rock to feed on algae. Here, using various microscopical and spectroscopical characterization techniques, we reveal the biomineralization-controlled structural development of the hard, outer magnetite-containing shell of the teeth. The thin magnetite nanoparticle coating as a protective layer against abrasion is also investigated. Inspired by mineralization process in natural system, we have synthesized magnetite nanoparticles using functional polymer matrices or templates. The results from these experiments will shine light on the eco-friendly manufacture of engineering materials with controlled microstructure for high performance applications. Self-assemble strategy has been used to fabricate unique hollow nanosphere structure of tantalum nitride for visible light photodegradation.