• 文献标题:   A flexible and highly efficient graphene-based photothermal evaporation device with independent water transport and photothermal absorption system br
  • 文献类型:   Article
  • 作  者:   BIAN LX, JIA LP, ZHOU YH, GANG HL, WANG ZL, ZHOU YS, GU SJ, LIU X, XU WL, ZHUANG Y, YANG HJ
  • 作者关键词:   solar steam generation, graphene oxide, photothermal efficiency, wicking, sunlight
  • 出版物名称:   MATERIALS TODAY COMMUNICATIONS
  • ISSN:  
  • 通讯作者地址:  
  • 被引频次:   3
  • DOI:   10.1016/j.mtcomm.2022.104337 EA SEP 2022
  • 出版年:   2022

▎ 摘  要

Solar interfacial evaporation is a new desalination technology, which has the advantages of low cost, low energy consumption, simple system and no pollution. New material development is crucial to improving the light ab-sorption ability, photothermal conversion efficiency, and water evaporation. In this study, a separate photo -thermal evaporation device is proposed. The graphene oxide (GO) was combined with polyacrylonitrile (PAN) to form a composite (GO/PAN) fiber by wet spinning. GO/PAN fiber as a photothermal absorption system was further woven with cotton yarn to produce a flexible photothermal conversion device. When the device is put in fuchsin solution, it can absorb water within 20 s and be completely soaked in the solution after 25 s. When the device was irradiated by 1 standard sunlight, the water evaporation rate was 1.82 kg m- 2 h-1. Under 5 or 10 standard sunlight, the water evaporation rate could reach 5.19 kg m- 2 h-1 and 11.79 kg m- 2 h-1, respectively. The graphene photothermal evaporation device of the invention adopts the method of interfacial evaporation here is easy to manufacture and has good flexibility. With the help of independent water transport and photo -thermal absorption system, the device can achieve high water absorption and photothermal properties, showing great potential for high-efficiency water desalination.