Unidirectional Transport and Effective Collection of Underwater CO₂ Bubbles Utilizing Ultrafast-Laser-Ablated Janus Foam

Suwan Zhu; Jiawen Li; Shengwen Cai; Yucheng Bian; Chao Chen; Bing Xu; Yahui Su; Yanlei Hu; Dong Wu; Jiaru Chu

doi:10.1021/acsami.0c00464

journal article·2020-04-15

Unidirectional Transport and Effective Collection of Underwater CO₂ Bubbles Utilizing Ultrafast-Laser-Ablated Janus Foam

Suwan Zhu, Jiawen Li, Shengwen Cai, Yucheng Bian, Chao Chen, Bing Xu, Yahui Su, Yanlei Hu, Dong Wu, Jiaru Chu

ACS Applied Materials & Interfaces· Volume 12· Issue 15

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Source abstract

Abstract

Manipulating gas bubbles in aqueous ambient is of great importance for applications in water treatment, gas collection, and matter transport. Here, a kind of Janus foam is designed and fabricated by one-step ultrafast laser ablation of one side of the copper film, which is treated to be superhydrophobic. Janus foam exhibits not only the capability of unidirectional transport of underwater bubbles but also gas collection with favorable efficiency up to ∼15 mL cm–2 min–1. The underlying physical mechanism is attributed to the cooperation of the buoyancy, adhesion, and wetting gradient forces imposed on the bubbles. As a paradigm, the underwater chemical reaction between the unidirectional CO2 gas flow and the alkaline phenolphthalein solution is demonstrated via Janus foam. This facile and low-cost fabrication approach for Janus foam will find broad potential applications in effective bubble transport, carbon capture, and controllable chemical reactions under aqueous conditions.

Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Pickering emulsions and particle stabilization · Surface Modification and Superhydrophobicity · Electrohydrodynamics and Fluid Dynamics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China

School of Electrical Engineering and Automation, School of Electronics and Information Engineering, Key Laboratory of Computational Intelligence and Signal Processing, Ministry of Education, Anhui University, Hefei 230039, China

School of Microelectronics, University of Science and Technology of China, Hefei 230026, P.R. China

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · China Postdoctoral Science Foundation · National Natural Science Foundation of China

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