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[Display omitted] • The prepared N interstitial doped V 2 O 5 has excellent rate and cycling properties. • N interstitial doping reduces bandgap energy of V 2 O 5 , improving the conductivity. • The doped N weakens forces between Zn2+ and V 2 O 5 , accelerating Zn2+ diffusion. • N doping turns Zn2+ move path from vertical interlayer into planer intralayer. • H bond connecting NH 2 and VO 5 hinders layer exfoliation and enhances layer stable. Rechargeable aqueous zinc-ion batteries (ZIBs) are the prospective substitution for lithium-ion batteries applied in large scale energy storage system due to their low-cost, environmentally friendliness, and high safety. However, the development of cathodes in aqueous ZIBs suffers from sluggish Zn2+ migration. Herein, nitrogen doped V 2 O 5 is introduced to resolve the above problem. N -doping lowers the bandgap energy of V 2 O 5 to improve its electronic conductivity, and weakens the forces between Zn2+ and V 2 O 5 to fasten Zn2+ diffusion. Further density functional theory (DFT) calculation testifies that N -doping reduces diffusion energy barrier and changes Zn2+ diffusion pathway from the vertical interlayer diffusion to planer intralayer diffusion. Meanwhile, the structural stability of electrode material also benefits from the N -doping, which can prevent the interlayer V 2 O 5 from gliding or exfoliation during cycling. Profiting from these merits, N -doping V 2 O 5 exhibits the outstanding electrochemical properties, such as high rate capability (116.8 mAh/g at 6 A/g) and long cycling performance (3000 cycles at 10 A/g). Dynamics and post-cycling analyses reveal the high capacitive ratio and the stable N distribution in N -doped V 2 O 5 during charging/discharging. [ABSTRACT FROM AUTHOR]

[Display omitted] • Tough short-fluorinated nanocoatings were fabricated by solvent-free iCVD. • Isocyanate chemistry induced self-crosslinking and fixated surface fluorinated chains. • Self-crosslinking enabled excellent dynamic water repellency and mechanical strength. • Conformal nanocoating imparted fabrics ultradurable superhydrophobicity. As long-perfluorinated side chain polymers are phasing out due to healthy and environmental concerns, short-fluorinated polymers are garnering increasing attention as a substitute for superhydrophobic coatings. Challenges, however, are to be addressed due to the poor dynamic water repellency and unsatisfactory durability of short-fluorinated polymer coatings. This work reports the fabrication of self-crosslinkable poly(perfluorohexylethyl acrylate- co -isocyanato ethyl methacrylate) nanocoating with good dynamic water repellency and high mechanical strength using a solvent-free initiated chemical vapor deposition (iCVD) method. The employment of highly reactive isocyanate groups in the coating not only facilitated covalent binding with functional groups on the substrate surface, but also enabled self-crosslinking reactions in the presence of water vapor. Crosslinking immobilized the fluorinated chains on the surface, thus alleviating the contact angle hysteresis. The crosslinked network also significantly improved the mechanical strength of the coating. Without affecting fabric morphology, the coating enabled superhydrophobicity of different fabrics with water sliding angle as low as 3˚. Such superhydrophobicity was well maintained after various harsh durability tests, including sandpaper abrasion for up to 20,000 cm, ultrasonication and boiling for more than 12 h, etc. The achieved durability was attributed to the enhanced adhesion strength and excellent mechanical property of the coating. This work thus paves a novel way towards eco-friendly fabrication of durable superhydrophobic fabrics. [ABSTRACT FROM AUTHOR]

[Display omitted] • A magnetic demulsifier with beetle-like structures was successfully fabricated. • The beetle-like microstructure endowed the demulsifier with anomalous wettability. • Fe 3 O 4 grains acted as solid-phase bridges to connect C-SR particles and GO sheets. • The demulsifier showed excellent separation properties for oil-in-water emulsion. • The introduction of Fe 3 O 4 and C-SR enhanced solar-assisted recyclability of GO. Owing to its high selective adsorption and excellent cyclability, superwetting materials have attracted considerable attention in environmental governance, especially oily wastewater treatment. However, the inferior separation efficiency and high recovery energy consumption seriously limit the actual application of superwetting particles in oil–water emulsion separation. Herein, inspired reversely by the water collection and water retention of the hydrophilic/superhydrophobic structure on the Stenocara beetle's back, we fabricated magnetic graphene oxide composite with beetle-like microstructure by one-step solvothermal and environmentally friendly ball milling method. Magnetic composite with superhydrophobic/superoleophilic bumps–hydrophilic underlayer exhibits high hydrophobicity/oleophilicity in air and high oleophobicity underwater. In the process of particle assembly, the Fe 3 O 4 grains with abundant oxygen vacancies peeled off from the in-situ deposited magnetic Fe 3 O 4 microspheres play a bridging role to immobilize the superhydrophobic carbon black particles on the graphene oxide (GO) surface. On the unique surface of magnetic composite, attributed to strong π–π/n–π interface adsorption and hydrophobic interaction, the oil–water separation can be rapidly demulsified and the superoleophilic bumps (superhydrophobic carbon black nanoparticles) can capture and aggregate tiny oil droplets. The hydration layer formed in the hydrophilic region effectively prevents the captured oil droplets from spreading on the composite structure, thus enhancing the emulsion separation ability of magnetic GO. More importantly, the prepared composites exhibit efficient recycling and regeneration under solar irradiation, which is superior to the recovery efficiency of traditional GO sheets lacking high self-heating components. These inverse beetle-like magnetic GO-based particles open up a new opportunity for the design and fabrication of advanced demulsifiers in the field of oil–water emulsion separation. [ABSTRACT FROM AUTHOR]