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Many biological materials exhibit a multiscale porosity with small, mostly nanoscale pores as well as large, macroscopic capillaries to simultaneously achieve optimized mass transport capabilities and lightweight structures with large inner surfaces. Realizing such a hierarchical porosity in artificial materials necessitates often sophisticated and expensive top‐down processing that limits scalability...
Porous Silica
In article number 2206842, Stella Gries, Patrick Huber, and co‐workers present a novel approach based on silver nanoparticle‐assisted chemical etching (MACE) of macroporous silicon for the synthesis of hierarchically porous silicon. The MACE process is mainly guided by a metal‐catalyzed redox‐reaction where silver nanoparticles drill mesopores into the silicon scaffold structure. The...
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