Patterned Slippery Surface for Bubble Directional Transportation and Collection Fabricated via a Facile Method

Jian Li; Zhiguang Guo

doi:10.34133/2019/9139535

Patterned Slippery Surface for Bubble Directional Transportation and Collection Fabricated via a Facile Method

Research (Wash D C). 2019 Nov 5:2019:9139535. doi: 10.34133/2019/9139535. eCollection 2019.

Authors

Jian Li^{1

2}, Zhiguang Guo^{1

2}

Affiliations

¹ Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, China.
² State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.

Abstract

Directional manipulation of underwater bubbles on a solid surface has attracted much attention due to its large-scale applications such as electrocatalytic gas evolution reactions, wastewater remediation, and solar energy harvesting. In this work, the patterned slippery surface (PSS) is fabricated via a facile method where the patterned pathways are fabricated by means of etching the pristine copper sheet. These patterned surfaces consisted of pristine copper and modified oxide copper which exhibit different wettability for bubble and water. The superhydrophobic and aerophilic surface can efficiently capture bubbles, and the infused oil layer is beneficial for reducing the resistance during transportation. Furthermore, the bubble can move upward, downward, and horizontally. Hence, it is easy to realize the bubble's transportation and collection on the functional surfaces.