Anatase assemblies from algae: coupling biological self-assembly of 3-D nanoparticle structures with synthetic reaction chemistry

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Abstract
The shape-preserving conversion of biologically self-assembled 3-D nanoparticle structures (SiO2-based diatom frustules) into a new nanocrystalline material (anatase TiO2) via a halide gas/solid displacement reaction route is demonstrated.