Biomimetic synthesis of nanostructured WO₃ · H₂O particles and subsequent thermal conversion to WO₃.

ABSTRACT: Nanostructured tungsten oxide (WO₃) particles were prepared in aqueous solution by mimicking biomineralization. Precursor WO₃ · H₂O particles were generated by ageing a 60°C (NH₄)₁₀W₁₂O₄₁ · 5H₂O solution containing gelatin. This was followed by heating to 600°C in air for thermal conversion to WO₃. The addition of gelatin led to the formation of layered structures consisting of WO₃ · H₂O platy particles, which contained segmented, block-like nanoscale units. The macroscopic layered structure was preserved after thermal conversion to WO₃, while the morphology of the block-like units changed to orthogonally crossed nanorods.

SUBMITTER: Uchiyama H 

PROVIDER: S-EPMC6599771 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature