Size-dependent superwettability adjustment strategy for preparing superhydrophilic and superhydrophobic solid particles

In this research, a simple strategy to prepare superwetted solid particles based on particle size adjustment is proposed. Typical samples, including Ag 2 O, AgCl, AgBr, Cu 2 O, Cu(OH) 2 , and soot, with different superwettabilities were obtained based on this size-dependent strategy. The acquired superwetted samples without any modification, whether superhydrophilic and superhydrophobic , had the same composition and structure, and their wettability was only decided by the particle size. This size-dependent strategy for preparing superwetted solid particles is universal and promising.