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This paper presents an ultrafacile, cost\u2010effective, and highly efficient alternative method for recycling waste packaging and cleaning foam (e.g., polymelamine\u2013formaldehyde foam). The designed solar absorber, a polypyrrole\u2010coated melamine foam (PMF), features a highly porous structure, excellent mechanical strength, low thermal conductivity, and rapid water transport capacity. These exceptional properties render the PMF suitable for multiple applications, including energy\u2010efficient solar\u2010powered water purification, ethanol distillation, and oil absorption. In water purification, the PMF yields a solar\u2013thermal conversion efficiency as high as 87.7%, stability that is maintained for more than 35 operation cycles, and antifouling capabilities (when purifying different water types). In solar distillation, the PMF achieves a concentration increase up to 75 vol% when distilling a 10 vol% ethanol solution. In oil absorption, the PMF offers an oil\u2010absorption capacity of \u224870\u00a0g g<jats:sup>\u22121<\/jats:sup> with only a 7% loss in capacity after 100 absorbing\u2013squeezing cycles. Thus, systems combining solar energy with various waste foams are highly promising as durable, renewable, and portable systems for water purification, organic distillation, and oil absorption, especially in remote regions or emergency situations.<\/jats:p>","DOI":"10.1002\/smll.202102459","type":"journal-article","created":{"date-parts":[[2021,9,30]],"date-time":"2021-09-30T08:40:58Z","timestamp":1632991258000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Recycling Polymeric Solid Wastes for Energy\u2010Efficient Water Purification, Organic Distillation, and Oil Spill Cleanup"],"prefix":"10.1002","volume":"17","author":[{"given":"Feng","family":"Gong","sequence":"first","affiliation":[{"name":"Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University  Nanjing 210096 P. R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dawei","family":"Xia","sequence":"additional","affiliation":[{"name":"Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University  Nanjing 210096 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dimitrios V.","family":"Papavassiliou","sequence":"additional","affiliation":[{"name":"School of Chemical Biological, and Materials Engineering University of Oklahoma  Norman OK 73019 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Xiao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University  Nanjing 210096 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yusuke","family":"Yamauchi","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland  Brisbane QLD 4072 Australia"},{"name":"JST\u2010ERATO Yamauchi Materials Space\u2010Tectonics Project and International Center for Materials Nanoarchitectonics (WPI\u2010MANA) National Institute for Materials Science (NIMS)  1\u20101 Namiki Tsukuba Ibaraki 305\u20100044 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0590-1396","authenticated-orcid":false,"given":"Kevin C.\u2010W.","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering National Taiwan University  No. 1, Sec. 4, Roosevelt Road Taipei 10617 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong Sik","family":"Ok","sequence":"additional","affiliation":[{"name":"Korea Biochar Research Center APRU Sustainable Waste Management Program and Division of Environmental Science and Ecological Engineering Korea University  Seoul 02841 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,9,30]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.wasman.2020.01.038"},{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.wasman.2009.06.004"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dib.2018.05.033"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.rser.2017.01.142"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201807842"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201907604"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1246\/bcsj.20180250"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1246\/bcsj.20180258"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41566-019-0573-5"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1389-5567(00)00002-2"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1200488"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apenergy.2019.01.153"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41560-018-0260-7"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apenergy.2019.114410"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.nanoen.2020.104922"},{"key":"e_1_2_8_16_1","first-page":"1708","volume":"5","author":"Wang P.","year":"2018","journal-title":"Environ. 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