Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (4): 699-702.doi: 10.1007/s40242-020-0195-y

• Articles • Previous Articles     Next Articles

Reduced Graphene Oxide/Carbon Fiber Composite Membrane for Self-floating Solar-thermal Steam Production

MA Aijing1, CHEN Yaxi2, LIU Yang3, GUI Jianzhou1, YU Yifu2   

  1. 1. State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry & Chemical Engineering, Tiangong University, Tianjin 300387, P. R. China;
    2. Institute of Molecular Plus, Tianjin University, Tianjin 300072, P. R. China;
    3. Analysis and Testing Center, Tianjin University, Tianjin 300072, P. R. China
  • Received:2020-06-17 Revised:2020-07-08 Online:2020-08-01 Published:2020-07-30
  • Contact: GUI Jianzhou, YU Yifu E-mail:guijianzhou@tiangong.edu.cn;yyu@tju.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21706191), the Program for Tianjin Innovative Research Team in Universities, China(No.TD 13-5031) and the Tianjin ―131‖ Research Team of Innovative Talents, China.

Abstract: Solar-thermal water evaporation has attracted increasing attention owing to the promising potential to solve the global clean water and energy crisis. But, the development of this strategy is limited by the lack of materials with high solar-thermal conversion efficiency, local heating of superficial water, easy preparation and low cost. Herein, we proposed a facile strategy to prepare a reduced graphene oxide/carbon fiber composite membrane, denoted as RGO/CF membrane. The surface of the RGO/CF membrane was highly hydrophobic, endowing the composite membrane with the self-floating ability on the water without any assistance. The light absorbance ability achieved as high as ca. 98% in the wavelength range of 300-1200 nm. The steam evaporation efficiency under the illumination of 3-sun was 97%, generating water steam at a rate of 4.54 kg·m-2·h-1. Moreover, the solar-thermal steam production rate showed high stability during successive 30 cycle tests.

Key words: Composite membrane, Reduced graphene oxide, Carbon fiber, Self-floating, Solar steam generation