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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c01647
|2 doi
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|a pubmed24n1097.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Chen, Lihua
|e verfasserin
|4 aut
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| 245 |
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|a Dual-Functional Graphene Oxide-Based Photothermal Materials with Aligned Channels and Oleophobicity for Efficient Solar Steam Generation
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 24.08.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Desalination by solar steam generation (SSG) has emerged as one of the most efficient approaches to address the issue of global water shortage. In this work, novel graphene oxide (GO)-based solar steam generators (GO-SSGs) with aligned channels were prepared by directional freezing and simple carbonization of a hydrogel composed of GO and poly(vinyl alcohol) (PVA). Benefitting from their excellent light absorption (light absorption efficiency exceeds 94%), better thermal insulation (thermal conductivity, 0.259 W/(m K)), and suitable porous structure, which facilitates rapid water transportation, the GO-SSGs show superior SSG performance with a high solar energy conversion efficiency of up to 92% achieved under an irradiation of 1.0 kW/m2. Interestingly, uniquely aligned channels endow them with good salt-rejection performance; the solar energy conversion efficiency of GO-SSGs in 20 wt % NaCl, KCl, and MgCl2 brine can reach more than 85%. To improve their antifouling performance, a chemically hydrophilic and oleophobic modification was conducted, making it possible to run SSG even in oily wastewater; for instance, a solar energy conversion efficiency of 84% was obtained in an aqueous solution containing 10 wt % n-hexadecane. Compared with the existing photothermal materials, these materials show advantages of simple manufacture, high SSG efficiency, superior salt tolerance, and antifouling performance, which make them promising candidates as a kind of new high-performance photothermal materials for desalination even in oily wastewater, thus further expanding the scope of their practical SSG application
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|a Journal Article
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1 |
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|a Wei, Jing
|e verfasserin
|4 aut
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1 |
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|a Tian, Qi
|e verfasserin
|4 aut
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|a Han, Zhichao
|e verfasserin
|4 aut
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|a Li, Li
|e verfasserin
|4 aut
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|a Meng, Shujuan
|e verfasserin
|4 aut
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|a Hasi, Qi-Meige
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 37(2021), 33 vom: 24. Aug., Seite 10191-10199
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:37
|g year:2021
|g number:33
|g day:24
|g month:08
|g pages:10191-10199
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|u http://dx.doi.org/10.1021/acs.langmuir.1c01647
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