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Cellulose-Conducting Polymer Aerogels for Efficient Solar Steam Generation
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0003-1874-2187
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2020 (English)In: Advanced Sustainable Systems, ISSN 2366-7486, Vol. 4, no 7, p. 2000004-Article in journal (Refereed) Published
Abstract [en]

Seawater desalination and wastewater purification technologies are the main strategies against the global fresh water shortage. Among these technologies, solar-driven evaporation is effective in extracting fresh water by efficiently exploiting solar energy. However, building a sustainable and low-cost solar steam generator with high conversion efficiency is still a challenge. Here, pure organic aerogels comprising a cellulose scaffold decorated with an organic conducting polymer absorbing in the infrared are employed to establish a high performance solar steam generator. The low density of the aerogel ensures minimal material requirements, while simultaneously satisfying efficient water transport. To localize the absorbed solar energy and make the system floatable, a porous floating and thermal-insulating foam is placed between the water and the aerogel. Thanks to the high absorbance of the aerogel and the thermal-localization performance of the foam, the system exhibits a high water evaporation rate of 1.61 kg m−2 h−1 at 1 kW m−2 under 1 sun irradiation, which is higher than most reported solar steam generation devices. 

Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2020. Vol. 4, no 7, p. 2000004-
Keywords [en]
cellulose aerogels, freeze-drying, PEDOT:PSS, solar steam generation, water purification
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:kth:diva-274226DOI: 10.1002/adsu.202000004ISI: 000527086300001Scopus ID: 2-s2.0-85083643908OAI: oai:DiVA.org:kth-274226DiVA, id: diva2:1452657
Note

QC 20200707

Available from: 2020-07-07 Created: 2020-07-07 Last updated: 2022-06-26Bibliographically approved

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Erlandsson, JohanWågberg, Lars

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CiteExportLink to record
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