Fabrication of Superhydrophobic Porous Brass by Chemical Dealloying for Efficient Emulsion Separation.

ABSTRACT: By taking advantage of typical dealloying and subsequent aging methods, a novel homogeneous porous brass with a micro/nano hierarchical structure was prepared without any chemical modification. The treatment of commercial brass with hot concentrated HCl solution caused preferential etching of Zn from Cu₆₂Zn₃₈ alloy foil, leaving a microporous skeleton with an average tortuous channel size of 1.6 μm for liquid transfer. After storage in the atmosphere for 7 days, the wettability of the dealloyed brass changed from superhydrophilic to superhydrophobic with a contact angle > 156° and sliding angle < 7°. The aging treatment enhanced the hydrophobicity of the brass by the formation of Cu₂O on the surface. By virtue of the opposite wettability to water and oil, t

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC10534338 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature