Branched In₂O₃ Mesocrystal of Ordered Architecture Derived from the Oriented Alignment of a Metal–Organic Framework for Accelerated Hydrogen Evolution over In₂O₃–ZnIn₂S₄

It is fascinating yet challenging to assemble anisotropic nanowires into ordered architectures of high complexity and intriguing functions. We exploited a facile strategy involving oriented etching of a metal–organic fragment (MOF) to advance the rational design of highly ordered nanostructures. As a proof of concept, a microscale MIL-68(In) single crystal was etched with a K3[Co(CN)6] solution to give a microtube composed of aligned MIL-68(In)...