1c:I[419806,["/_next/static/chunks/bb923814e1f4d2e9.js","/_next/static/chunks/dd3ee9f5b7716ca6.js","/_next/static/chunks/4204a0ae82542ca8.js","/_next/static/chunks/1270dead247da766.js","/_next/static/chunks/6e1aa89a642f40be.js","/_next/static/chunks/2d7aa753e81324a8.js","/_next/static/chunks/8ffd0b71567920d8.js","/_next/static/chunks/67ea6dfd21f16c5f.js","/_next/static/chunks/24eb4379f68013fd.js","/_next/static/chunks/b8cd775ffdf935bd.js","/_next/static/chunks/983103cd9eb7b428.js","/_next/static/chunks/263f2cdcb9aa2341.js","/_next/static/chunks/294b9525248c8e5f.js"],"default"] 1d:T435,Abstract The key challenge to developing renewable and clean energy technologies lies in the rational design and synthesis of efficient and earth‐abundant catalysts for a wide variety of electrochemical reactions. This review presents materials design strategies for constructing improved electrocatalysts based on MOF precursors/templates, with special emphasis on component manipulation, morphology control, and structure engineering. Guided by these strategies, recently developed MOF‐derived materials have exhibited remarkable activity, selectivity, and stability for various energy‐conversion processes, manifesting great potential for replacing precious‐metal‐based catalysts in next‐generation energy devices. Existing challenges and opportunities regarding MOF‐derived electrocatalysts are also discussed. It is anticipated that by extending current materials design strategies to a wider range of MOF precursors for various energy‐related electrocatalytic reactions, significant advances toward achieving highly efficient electrocatalysts can be made.1e:T44c,The electrocatalytic conversion of CO₂ into value-added chemicals is a promising approach to realize a carbon-energy balance. However, low current density still limits the application of the CO₂ electroreduction reaction (CO₂ RR). Metal-organic frameworks (MOFs) are one class of promising alternatives for the CO₂ RR due to their periodically arranged isolated metal active sites. However, the poor conductivity of traditional MOFs usually results in a low current density in CO₂ RR. We have prepared conductive two-dimensional (2D) phthalocyanine-based MOF (NiPc-NiO₄ ) nanosheets linked by nickel-catecholate, which can be employed as highly efficient electrocatalysts for the CO₂ RR to CO. The obtained NiPc-NiO₄ has a good conductivity and exhibited a very high selectivity of 98.4 % toward CO production and a large CO partial current density of 34.5 mA cm^-2 , outperforming the reported MOF catalysts. This work highlights the potential of conductive crystalline frameworks in electrocatalysis.1f:T454,Hollow layered double hydroxide (LDH) nanostructures derived from metal-organic framework (MOF) nanoparticles (NPs) are candidate materials for applications in catalysis and energy storage. MOF NPs serve as a sacrificial template and are converted into LDH nanomaterials through two simultaneous processes: etching of the NPs and growth of LDHs on the NP surfaces. However, for these conversion processes, early reaction stages, intermediate products, and details of their reaction kinetics are still unknown. Using liquid-phase transmission electron microscopy (TEM), we show that cubic and rhombic dodecahedron (RD) ZIF-8 NPs convert into hollow LDH nanocages via the nucleation and growth of LDH nanosheets on their surface as the MOF NPs gradually etch. These direct in situ observations reveal that, in these reactions, maintaining comparable etching and growth rates is key to forming well-defined hollow nanostructures that retain the shape of the underlying MOF NP template. Our study provides a critical insight pivotal to the design and synthesis of complex MOF-derived hollow nanomaterials.

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