• 文献标题:   Vertically Aligned Graphene Sheets Membrane for Highly Efficient Solar Thermal Generation of Clean Water
  • 文献类型:   Article
  • 作  者:   ZHANG PP, LI J, LV LX, ZHAO Y, QU LT
  • 作者关键词:   vertically aligned graphene sheets membrane, graphene assembly, solar thermal conversion, steam generation, clean water
  • 出版物名称:   ACS NANO
  • ISSN:   1936-0851 EI 1936-086X
  • 通讯作者地址:   Minist Educ
  • 被引频次:   201
  • DOI:   10.1021/acsnano.7b01965
  • 出版年:   2017

▎ 摘  要

Efficient utilization of solar energy for clean water is an attractive, renewable, and environment friendly way to solve the long-standing water crisis. For this task, we prepared the long-range vertically aligned graphene sheets membrane (VA-GSM) as the highly efficient solar thermal converter for generation of clean water. The VA-GSM was prepared by the antifreeze-assisted freezing technique we developed, which possessed the run-through channels facilitating the water transport, high light absorption capacity for excellent photothermal transduction, and the extraordinary stability in rigorous conditions. As a result, VA-GSM has achieved average water evaporation rates of 1.62 and 6.25 kg m(-2) h(-1) under 1 and 4 sun illumination with a superb solar thermal conversion efficiency of up to 86.5% and 94.2%, respectively, better than that of most carbon materials reported previously, which can efficiently produce the clean water from seawater, common wastewater, and even concentrated acid and/or alkali solutions.