中国物理B ›› 2014, Vol. 23 ›› Issue (4): 46802-046802.doi: 10.1088/1674-1056/23/4/046802

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Dynamic surface wettability of three-dimensional graphene foam

黄文斌a, 王广龙a, 高凤岐a, 乔中涛a, 王刚b, 陈闽江b, 陶立b, 邓娅b, 孙连峰b   

  1. a Institute of Nanotechnology and Microsystems, Mechanical Engineering College, Shijiazhuang 050003, China;
    b National Center for Nanoscience and Technology, Beijing 100190, China
  • 收稿日期:2013-08-21 修回日期:2013-10-09 出版日期:2014-04-15 发布日期:2014-04-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10774032 and 90921001) and the Key Knowledge InnovationProject of the Chinese Academy of Sciences on Water Science Research, Instrument DevelopingProject of the Chinese Academy of Sciences (Grant No. Y2010031).

Dynamic surface wettability of three-dimensional graphene foam

Huang Wen-Bin (黄文斌)a, Wang Guang-Long (王广龙)a, Gao Feng-Qi (高凤岐)a, Qiao Zhong-Tao (乔中涛)a, Wang Gang (王刚)b, Chen Min-Jiang (陈闽江)b, Tao Li (陶立)b, Deng Ya (邓娅)b, Sun Lian-Feng (孙连峰)b   

  1. a Institute of Nanotechnology and Microsystems, Mechanical Engineering College, Shijiazhuang 050003, China;
    b National Center for Nanoscience and Technology, Beijing 100190, China
  • Received:2013-08-21 Revised:2013-10-09 Online:2014-04-15 Published:2014-04-15
  • Contact: Sun Lian-Feng E-mail:slf@nanoctr.cn
  • About author:68.08.De; 68.35.Ja; 81.15.Gh
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10774032 and 90921001) and the Key Knowledge InnovationProject of the Chinese Academy of Sciences on Water Science Research, Instrument DevelopingProject of the Chinese Academy of Sciences (Grant No. Y2010031).

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摘要： In this work, three-dimensional graphene foams (GFs) are synthesized and characterized by scanning electron microscope (SEM) and Raman spectroscopy. The SEM images indicate that after the growth of graphene, the graphene covers the surface of nickel (Ni) foam uniformly. Raman spectra show that the percentages of monolayer, bilayer, trilayer, and multilayer graphenes are ～ 58%, ～ 32%, ～ 8%, and ～ 2%, respectively. The contact angle (CA) (～ 12°) of water droplet (3 μL) on GF is found to be larger than that on Ni foam (～ 107°), indicating that graphenes have changed the surface wettability of the Ni foam. Meanwhile, the dynamic characteristics of CA of water droplet on GF are different from those on Ni foam. The mechanisms for different behaviors are discussed, which are attributed to volatilization and seepage of water droplets.

关键词: graphene foam, CVD, surface wettability, contact angle

Abstract: In this work, three-dimensional graphene foams (GFs) are synthesized and characterized by scanning electron microscope (SEM) and Raman spectroscopy. The SEM images indicate that after the growth of graphene, the graphene covers the surface of nickel (Ni) foam uniformly. Raman spectra show that the percentages of monolayer, bilayer, trilayer, and multilayer graphenes are ～ 58%, ～ 32%, ～ 8%, and ～ 2%, respectively. The contact angle (CA) (～ 12°) of water droplet (3 μL) on GF is found to be larger than that on Ni foam (～ 107°), indicating that graphenes have changed the surface wettability of the Ni foam. Meanwhile, the dynamic characteristics of CA of water droplet on GF are different from those on Ni foam. The mechanisms for different behaviors are discussed, which are attributed to volatilization and seepage of water droplets.

Key words: graphene foam, CVD, surface wettability, contact angle

中图分类号:  (Liquid-solid interface structure: measurements and simulations)

  • 68.08.De
68.35.Ja (Surface and interface dynamics and vibrations) 81.15.Gh (Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))