Superwetting graphene-based materials: From wettability regulation to practical applications

Smart three-phase interface heterojunctions for effective photo(electro)catalytic N2 reduction to ammonia

“…20,26 Wettability is an intrinsic property of all solid surfaces that represents the affinity of a solid substrate to be wetted by a uid, and which is determined by their surface polarity or their geometric structure (intrinsic or apparent wettability, respectively). 18,25,27 Then, the wetting degree of a solid substrate can be classied into four main categories depending on the contact angle (q) at which the liquid droplet contacts the solid surface, namely superhydrophilic (0°< q < 10°), hydrophilic (10°< q < 90°), hydrophobic (90°< q < 150°), or superhydrophobic (q > 150°) (Fig. 3b).…”

CO2-philicity to CO2-phobicity Transition on Smooth and Stochastic Rough Cu-like Substrate Surfaces

“…Inspired by natural surface structures (such as the lotus leaf), various efforts have been devoted in recent years to tuning the wettability of industrial materials using surface roughness. Experimentally, the surface asperities and nanoscale patterns can be created by removing or adding materials through several methods, such as chemical deposition, , laser micromachining, , and crystallization control. − As shown in Figures d–f, the wettability of a liquid droplet on the rough substrate with multiscale roughness can be changed due to the variation in the liquid–solid contacting state, which results from the capillary drying effect of the nanoscale confinement between substrate asperities . The power spectra of engineering surfaces (such as the surface morphologies in Figures g–i), modified by stochastic processes, usually follow inverse power laws over a wide range of length scales .…”