10
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Architecting highly hydratable polymer networks to tune the water state for solar water purification

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Highly hydratable light-absorbing hydrogels with reduced water vaporization energy promote efficient solar water purification.

          Abstract

          Water purification by solar distillation is a promising technology to produce fresh water. However, solar vapor generation, is energy intensive, leading to a low water yield under natural sunlight. Therefore, developing new materials that can reduce the energy requirement of water vaporization and speed up solar water purification is highly desirable. Here, we introduce a highly hydratable light-absorbing hydrogel (h-LAH) consisting of polyvinyl alcohol and chitosan as the hydratable skeleton and polypyrrole as the light absorber, which can use less energy (<50% of bulk water) for water evaporation. We demonstrate that enhancing the hydrability of the h-LAH could change the water state and partially activate the water, hence facilitating water evaporation. The h-LAH raises the solar vapor generation to a record rate of ~3.6 kg m −2 hour −1 under 1 sun. The h-LAH-based solar still also exhibits long-term durability and antifouling functionality toward complex ionic contaminants.

          Related collections

          Most cited references36

          • Record: found
          • Abstract: not found
          • Article: not found

          3D self-assembly of aluminium nanoparticles for plasmon-enhanced solar desalination

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Global water resources: vulnerability from climate change and population growth.

            The future adequacy of freshwater resources is difficult to assess, owing to a complex and rapidly changing geography of water supply and use. Numerical experiments combining climate model outputs, water budgets, and socioeconomic information along digitized river networks demonstrate that (i) a large proportion of the world's population is currently experiencing water stress and (ii) rising water demands greatly outweigh greenhouse warming in defining the state of global water systems to 2025. Consideration of direct human impacts on global water supply remains a poorly articulated but potentially important facet of the larger global change question.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Highly efficient solar vapour generation via hierarchically nanostructured gels

                Bookmark

                Author and article information

                Journal
                Sci Adv
                Sci Adv
                SciAdv
                advances
                Science Advances
                American Association for the Advancement of Science
                2375-2548
                June 2019
                28 June 2019
                : 5
                : 6
                : eaaw5484
                Affiliations
                [1 ]Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
                [2 ]Lockheed Martin Corporation, 1 Lockheed Boulevard, Fort Worth, TX 76108, USA.
                Author notes
                [*]

                These authors contributed equally to this work.

                []Corresponding author. Email: ghyu@ 123456austin.utexas.edu
                Author information
                http://orcid.org/0000-0001-7593-3137
                http://orcid.org/0000-0002-3405-6235
                http://orcid.org/0000-0002-3851-0837
                http://orcid.org/0000-0002-3253-0749
                Article
                aaw5484
                10.1126/sciadv.aaw5484
                6599166
                31259243
                6ec09ef0-de3b-4b45-8638-93216cbb2463
                Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

                This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

                History
                : 04 January 2019
                : 17 May 2019
                Funding
                Funded by: doi http://dx.doi.org/10.13039/100000879, Alfred P. Sloan Foundation;
                Funded by: doi http://dx.doi.org/10.13039/100001082, Camille and Henry Dreyfus Foundation;
                Funded by: doi http://dx.doi.org/10.13039/100004317, Lockheed Martin Corporation;
                Categories
                Research Article
                Research Articles
                SciAdv r-articles
                Chemistry
                Materials Science
                Applied Sciences and Engineering
                Custom metadata
                Ariel Francis Banag

                Comments

                Comment on this article