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Tin (Sn)‐based perovskites are being investigated in many optoelectronic applications given their similar valence electron configuration to that of lead‐based perovskites and the potential environmental hazards of lead‐based perovskites. However, the formation of high‐quality Sn‐based perovskite films faces several challenges, mainly due to the easy oxidation of Sn2+ to Sn4+ and the fast crystallization...
Translation of the unique properties of 2D monolayers from non‐scalable micron‐sized samples to macroscopic scale is a longstanding challenge obstructed by the substrate‐induced strains, interface nonuniformities, and sample‐to‐sample variations inherent to the scalable fabrication methods. So far, the most successful strategies to reduce strain in graphene are the reduction of the interface roughness...
Climate change is causing droughts and water shortages. Membrane desalination is one of the most widely employed conventional methods of creating a source of clean water, but is a very energy‐intensive process. Membrane separation requires high salt selectivity across nano‐channels, yet traditional techniques remain inefficient in this regard. Herein, a bioinspired, chemically robust, amyloid–fibril‐based...
Precise design of low‐cost, efficient and definite electrocatalysts is the key to sustainable renewable energy. Herein, this work develops a targeted‐anchored and subsequent spontaneous‐redox strategy to synthesize nickel‐iron layered double hydroxide (LDH) nanosheets anchored with monodispersed platinum (Pt) sites (Pt@LDH). Intermediate metal‐organic frameworks (MOF)/LDH heterostructure not only...
To solve surface carrier recombination and sluggish water oxidation kinetics of hematite (α‐Fe2O3) photoanodes, herein, an attractive surface modification strategy is developed to successively deposit ultrathin CoOx overlayer and Ni single atoms on titanium (Ti)‐doped α‐Fe2O3 (Ti:Fe2O3) nanorods through a two‐step atomic layer deposition (ALD) and photodeposition process. The collaborative decoration...
Nanostructured carbon materials with high porosity and desired chemical functionalities are of immense interest because of their wide application potentials in catalysis, environment, and energy storage. Herein, a top‐down templating strategy is presented for the facile synthesis of functional porous carbons, based on the direct carbonization of diverse organic precursors with commercially available...
Engineering multicomponent nanocatalysts is effective to improve electrocatalysis in many applications, yet it remains a challenge in constructing well‐defined multimetallic active sites at the atomic level. Herein, the surface inlay of sub‐monolayer Pb oxyhydroxide onto hexagonal PtBi intermetallic nanoplates with intrinsically isolated Pt atoms to boost the methanol oxidation reaction (MOR) is reported...
Functional nanomaterials such as iron oxide nanoparticles have been extensively explored for the diagnosis and treatment of central nervous system diseases. However, an insufficient understanding of the comprehensive nanomaterial‐biological interactions in the brain hinders the nanomaterials from meeting the medical requirements for translational research. Here, FDA‐approved ferumoxytol, an iron oxide...
The rational design of catalytically active sites in porous materials is essential in electrocatalysis. Herein, atomically dispersed Fe‐Nx sites supported by hierarchically porous carbon membranes are designed to electrocatalyze the hydrazine oxidation reaction (HzOR), one of the key techniques in electrochemical nitrogen transformation. The high intrinsic catalytic activity of the Fe‐Nx single‐atom...
In article number 2002203, Tian Sheng, Shu‐Hui Sun, Jiayin Yuan, and co‐workers propose and verify atomically dispersed pyrrole‐type Fe‐N4 sites supported on hierarchically porous carbon membranes as real active sites for the electrochemical hydrazine oxidation reaction (HzOR), which will open up the future exploration of the metal‐Nx catalysts for HzOR in fuel cells and beyond.
In cells, mechanical forces play a key role in impacting cell behaviors, including adhesion, differentiation, migration, and death. Herein, a 20 nm mitochondria‐targeted zinc‐doped iron oxide nanocube is designed as a nanospinner to exert mechanical forces under a rotating magnetic field (RMF) at 15 Hz and 40 mT to fight against cancer. The nanospinners can efficiently target the mitochondria of cancer...
The development of earth‐abundant, low cost, and versatile electrocatalysts for producing hydrogen from water electrolysis is still challenging. Herein, based on high hydrogen evolution reaction (HER) activity of transition metal phosphides, a CoP3 nanowire decorated with copper phosphides (denoted as CuPx) nanodots structures synthesized through a simple and easily scalable precursor‐transformation...
Enabling mechanical responsiveness in field‐effect transistors (FETs) offers new technological opportunity beyond the reach of existing platforms. Here a new force‐sensing concept is proposed by controlling the wettability of a semiconductor surface, referring to the interfacial field‐effect transistors (IFETs). An IFET made by superhydrophobic semiconductor nanowires (NWs) sandwiched between a layer...
In article number 1804006, Chih‐Jen Shih and co‐workers introduce a new transistor design concept for sensing ultrasmall surface forces by the deformation of a liquid metal droplet on the superhydrophobic semiconductor nanowires grown on graphene, referring to the interfacial field‐effect transistors.
Non‐noble metal catalysts for high‐active electrocatalytic oxygen evolution reaction (OER) are essential in large‐scale application for water splitting. Herein, tricomponent metal phosphides with hollow structures are synthesized from cobalt‐contained metal organic frameworks (MOFs), i.e., ZIF‐67, by tailoring the feeding ratios of Ni and Fe, followed by a high‐temperature reduction and a subsequent...
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