Multifunctional Engineering Aluminum Surfaces for Self‐Propelled Anti‐Condensation

Abstract

Learning from nature will give us some important inspiration in designing multifunctional materials and in developing new technology. Self-propelled motion is ubiquitous in nature. Special wetting surfaces have considerable technological potential for various applications arising from their extreme repellent properties toward liquids. Here, we reported the spontaneous anti-condensation on low adhesive superamphiphobic engineered Al surfaces. The mechanism of anti-condensation was also investigated in this work. The dropwise condensation on engineering metals was removed autonomously without any external forces arising from the out-of-plane jumping motion of the coalesced drops. The self-propelled jumping motion of merged drops is driven by the surface energy released upon drop coalescence. Besides the anti-condensation, the resultant Al surfaces also showed robust repellency toward various polar, nonpolar liquids and even corrosive liquids, demonstrating stable superamphiphobicity, anti-corrosion, and self-cleaning properties. This will extend the practical applications of engineering metals in the fields of anti-icing and heat exchange.

Interfacial Electronic Engineering of the 2D/2D Cu‐MoS 2 /Cu 3 (HIB) 2 Heterojunction for Bifunctional Ammonia Electrolysis: Synergistic Hydrogen Production and Wastewater Detoxification

“…[ 37 ] Additionally, the peak at 2θ = 8.9° is attributed to the (002) plane of the 1T phase of MoS 2 , confirming the successful synthesis of 2H/1T‐MoS 2 . [ 38 ] No discernible diffraction signals for Cu or CuS crystalline phases were detected, suggesting homogeneous atomic dispersion of doped Cu within MoS 2 without cluster formation, which is consistent with the TEM mapping results. The uniform Cu distribution implies the lattice incorporation of Cu atoms into MoS 2 , which effectively modulates the electronic structure of the Mo centers and generates lattice defects (discussed in the subsequent analysis).…”

Proton Flux Engineering via Built‐in Electric Fields in N‐doped CuO@Co 3 O 4 @Ni(OH) 2 Heterostructure for Rechargeable Zn‐NO 3 − /5‐Hydroxymethylfurfural Multielectron Transfer Systems

“…Ultraviolet photoelectron spectroscopy (UPS) measurements of the secondary electron cutoff ( E cutoff ) for individual N‐CuO, Co 3 O 4 , and Ni(OH) 2 revealed work functions ( Φ = 21.22 eV − E cutoff ) of 4.48, 4.39, and 3.72 eV (Figure 1g), respectively. [ 34,35 ] The resulting work function gradient drives spontaneous electron transfer from Ni(OH) 2 (lower Φ ) to N‐CuO (higher Φ ) upon heterojunction formation. This charge redistribution establishes a cascade‐enhanced built‐in electric field across Ni(OH) 2 to N‐CuO, promoting charge separation and boosting electrocatalytic efficiency.…”

Programming Multiphase Media Superwetting States in the Oil–Water–Air System: Evolutions in Hydrophobic–Hydrophilic Surface Heterogeneous Chemistry

“…Superwetting control emerged as a popular topic in fundamental interface science field and can directly affect specific effects on solid surface in certain environment media, and would provide a powerful toolbox to solve complex and challenging problems in academic and industrial fields, [ 1–7 ] for example, efficiency and selectivity in catalysis process, [ 8,9 ] controllability in printing and patterning, [ 10,11 ] and sensitivity in surface analysis. [ 12,13 ] Although considerable attempts have recently been made to design and construct multifunctional superwetting surfaces, [ 4,14–20 ] especially for superantiwetting surfaces, [ 21–26 ] the defined superantiwetting states can only perform in single certain environment media, causing most of the significant interfacial applications to not be achieved in different media. For example, an inevitable antifouling failure is usually observed on dry underwater superoleophobic surfaces where oils can easily wet and contaminate the whole superhydrophilic surface in air.…”