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. 2016 Oct 7;6:33050. doi: 10.1038/srep33050

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Copyright © 2016, The Author(s)

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Low to high magnification TEM characterization of a hexagonal honeycomb-shaped frustule-like nanoSi structure showing the SiNPs (a–c), XRD spectra of DE, nanoSi, and C-coated nanoSi (d), the EDX spectrum and elemental composition of DE before and after HCl leaching (e), and BET N₂ adsorption isotherms of DE before and after purification, and nanoSi (f).