PHOTO-THERMAL DESALINATION PERFORMANCE OF GRAPHITE OXIDE/POLYVINYL ALCOHOL COMPOSITE ELECTROSPUN FIBROUS MEMBRANE

GAO Hang; GUO Xing-xing; WANG Si-yu; DAI Yun-rong; YIN Li-feng

doi:10.13205/j.hjgc.202106002

Volume 39 Issue 6

Jan. 2022

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GAO Hang, GUO Xing-xing, WANG Si-yu, DAI Yun-rong, YIN Li-feng. PHOTO-THERMAL DESALINATION PERFORMANCE OF GRAPHITE OXIDE/POLYVINYL ALCOHOL COMPOSITE ELECTROSPUN FIBROUS MEMBRANE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 6-14. doi: 10.13205/j.hjgc.202106002

Citation:

GAO Hang, GUO Xing-xing, WANG Si-yu, DAI Yun-rong, YIN Li-feng. PHOTO-THERMAL DESALINATION PERFORMANCE OF GRAPHITE OXIDE/POLYVINYL ALCOHOL COMPOSITE ELECTROSPUN FIBROUS MEMBRANE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 6-14. doi: 10.13205/j.hjgc.202106002

Citation:

GAO Hang, GUO Xing-xing, WANG Si-yu, DAI Yun-rong, YIN Li-feng. PHOTO-THERMAL DESALINATION PERFORMANCE OF GRAPHITE OXIDE/POLYVINYL ALCOHOL COMPOSITE ELECTROSPUN FIBROUS MEMBRANE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 6-14. doi: 10.13205/j.hjgc.202106002

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PHOTO-THERMAL DESALINATION PERFORMANCE OF GRAPHITE OXIDE/POLYVINYL ALCOHOL COMPOSITE ELECTROSPUN FIBROUS MEMBRANE

doi: 10.13205/j.hjgc.202106002

1. Beijing Key Laboratory of Water Resources & Environmental Engineering, MOE, Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China;
2. Basin Research Center for Water Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
3. School of Environment, Beijing Normal University, Beijing 100875, China

Received Date: 2020-05-01
Available Online: 2022-01-18

Abstract

Abstract

Graphite oxide/polyvinyl alcohol composite electrospun fibrous membrane was prepared by using electrospinning technology, and the carbon nanomaterial graphite oxide could be in situ immobilized in the polyvinyl alcohol fibers. The composite fibrous membrane was used as a solar photo-thermal conversion material for desalination treatment of simulated seawater. The results showed that the composite fibrous membrane was an excellent photo-thermal conversion material. It was extremely hydrophilic, also had a wide spectral absorption range and high photo-absorption rate at wet state. The composite fibrous membranes produced under the conditions of spinning voltage of 15 kV, electrode plate spacing of 15 cm, and graphite oxide mass concentration of 3%(vs. polyvinyl alcohol) had the best photo-thermal conversion properties. Under the irradiation of 1 sunshine unit(1 kW/m²), the surface of membrane could be rapidly heated to about 50℃. The water evaporation rate could reach 1.09 kg/(m²·h), and the photo-thermal conversion efficiency was 71.9%. The composite fibrous membrane could achieve more than 99.9% of desalination efficiency for simulated seawater with different NaCl concentrations. Moreover, the composite fibrous membrane has good stability and reusability, and can be well applied in the field of ordinary seawater desalination.
- photo-thermal conversion material,
- desalination,
- electrospinning,
- fibrous membrane,
- graphite oxide

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References(33)

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