NANOMATERIALS

One and the same

Proc. Natl Acad. Sci. USA http://doi.org/cs5k (2018)

Nanostructured carbon comes in many forms with different curvatures, such as positively curved spherical fullerenes or zero-curved two-dimensional graphene. Many theoretically predicted carbons adopt the form of so-called schwarzites, carbon allotropes with negative Gaussian curvature. However, it remains unclear whether ‘random schwarzites’ and zeolite-templated carbons (ZTCs), the only experimentally isolated materials with similar properties, can be considered schwarzites. Now, E. Braun and colleagues have presented a theoretical framework offering a complete library of synthesizable ZTCs from known zeolites, and confirmed that ZTCs are schwarzites incarnate.

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PNAS

The researchers exploit the idea of structural similarity between ZTCs and schwarzites, which resemble a triply periodic minimal surface (TPMS). The designed Monte Carlo method closely mimics the zeolite templating process. As an output, a subset of novel ZTCs was obtained and matched with the experimentally isolated ZTCs. Consequently, the researchers concluded that many ZTCs, despite their dissimilar structural parameters, resembled known TPMSs — linking these materials to hypothesized carbon schwarzites and showing how to find template zeolites to experimentally synthesize a desired schwarzite.

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Correspondence to Olga Bubnova.

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Bubnova, O. One and the same. Nature Nanotech 13, 769 (2018). https://doi.org/10.1038/s41565-018-0264-2

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