Transparent superhydrophilic and superhydrophobic nanoparticle textured coatings: comparative study of anti-soiling performance.

ABSTRACT: The anti-soiling (AS) performance of highly reflective, superhydrophilic (SPH, 0° water contact angle) coated mirrors was characterized and compared with that of superhydrophobic (SP, >165° water contact angle) coated mirrors. A simple one-step nanotextured silica nanoparticle coating on a mirror exhibited SPH properties associated with hydrophilic rough surfaces. Another mirror surface post-functionalized with low-surface-energy ligand molecules displayed SP behavior. Both coated mirrors, with no solar reflectance loss, demonstrated excellent AS performance because the engineered surface roughness reduced the adhesive force of dust particles. The daily degradation in solar reflectance induced by dust accumulation under outdoor field testing demonstrated that the SPH- and SP-coated mirrors

SUBMITTER: Jang GG 

PROVIDER: S-EPMC9473203 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature