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Directional and Continuous Transport of Gas Bubbles on Superaerophilic Geometry-Gradient Surfaces in Aqueous Environments

机译：水性环境中超嗜水几何梯度表面上气泡的定向和连续传输

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摘要

Due to the direct and sufficient contacting with the aqueous environment, the directional and continuous transport of gas bubbles on open surface without energy input will advance a variety of applications in heat transfer, selective aeration, water electrolysis, etc. Unfortunately, the behaviors of gas bubbles in aqueous environment are mainly dominated by the buoyancy moving gas bubbles upward, resulting in their difficult manipulation. Therefore, realizing the directional and continuous transport of gas bubbles on open surface still remains a great challenge. Herein, a novel strategy integrating the super-aerophilic wettability with geometry-gradient structure is proposed, which can engender high driving force and low hysteresis resistance force acting on the gas bubbles. In experiment, these fabricated superaerophilic geometry-gradient polyethylene surfaces demonstrate distinguished performance of directionally and continuously transporting gas bubbles on open surfaces without energy input. In addition, the antibuoyancy bubble transportation device and the underwater bubble microreactor are successfully prepared in this manuscript, both of which illustrate the feasibility in the applications of complex environment and gas-related fields. It can be envisioned that this study will promote the understanding and development of underwater functional superwettability materials to achieve the directional and continuous transport of gas bubbles on the open surface.
机译：由于与含水环境的直接和充分接触，气泡在无能量输入的情况下在开放表面上的定向和连续传输将促进传热，选择性曝气，水电解等方面的各种应用。不幸的是，气体的行为水性环境中的气泡主要由浮力向上移动，从而导致气泡难以操纵。因此，在开放表面上实现气泡的定向和连续传输仍然是一个巨大的挑战。在此，提出了一种新的策略，该策略将超好氧的可湿性与几何梯度结构相结合，可以产生作用于气泡上的高驱动力和低滞后阻力。在实验中，这些人造的超需氧几何梯度聚乙烯表面表现出在没有能量输入的情况下在开放表面上定向和连续传输气泡的出色性能。此外，本文成功地制备了防浮气泡输送装置和水下气泡微反应器，这两者都说明了在复杂环境和天然气相关领域中应用的可行性。可以预见，这项研究将促进对水下功能性超湿性材料的理解和发展，以实现气泡在开放表面上的定向和连续传输。

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  • 来源
    《Advanced Functional Materials》 |2018年第7期|76-82|共7页
  • 作者

    Ma Hongyu; Cao Moyuan; Zhang Chunhui; Bei Zhanlin; Li Kan; Yu Cunming; Jiang Lei;

  • 作者单位

    Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Minist Educ,Key Lab Bioinspired Smart Interfacial, Beijing 100191, Peoples R China;

    Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China;

    Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Minist Educ,Key Lab Bioinspired Smart Interfacial, Beijing 100191, Peoples R China;

    Beifang Univ Nationalities, Coll Biol Sci & Engn, Ningxia 750021, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interface Sci, Beijing 100190, Peoples R China;

    Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Minist Educ,Key Lab Bioinspired Smart Interfacial, Beijing 100191, Peoples R China;

    Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Minist Educ,Key Lab Bioinspired Smart Interfacial, Beijing 100191, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    aqueous environments; directional and continuous transport; gas bubbles; geometry-gradient surfaces; superaerophilic surfaces;

    机译：水性环境;定向和连续运输;气泡;几何梯度表面;超好氧表面;

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