Noble Metal Ion‐Directed Assembly of 2D Materials for Heterostructured Catalysts and Metallic Micro‐Texturing

Abstract Assembling 2D‐material (2DM) nanosheets into micro‐ and macro‐architectures with augmented functionalities requires effective strategies to overcome nanosheet restacking. Conventional assembly approaches involve external binders and/or functionalization, which inevitably sacrifice 2DM's nanoscale properties. Noble metal ions (NMI) are promising ionic crosslinkers, can simultaneously assemble 2DM induce synergistic Herein, a collection of NMI–2DM complexes screened categorized two sub‐groups. Based on the zeta potentials, developed obtain 1) NMI‐crosslinked hydrogels/aerogels for heterostructured catalysts 2) inks templated synthesis. First, tetraammineplatinum(II) nitrate (TPtN) serves as an efficient crosslinker agglomerate various dispersions. By utilizing micro‐textured platforms, TPtN–2DM hydrogels fabricated in scalable fashion. Afterward, these lyophilized thermally reduced synthesize Pt‐decorated aerogels (Pt@2DM). The Pt@2DM heterostructures demonstrate high, substrate‐dependent catalytic activities promote different reaction pathways hydrogenation 3‐nitrostyrene. Second, PtCl 4 be incorporated dispersions at high NMI molarities prepare series –2DM colloidal stability. adopting –graphene oxide ink, Pt micro‐structures replicated topographies synthesized accurate control grain sizes porosities.