Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from Water
A 6-carbon short-chain per- and polyfluoroalkyl substance (PFAS), GenX, also known as hexafluoropropylene oxide dimer acid (HFPO-DA) and its ammonium salt, has been manufactured in recent years as a replacement for perfluorooctanoic acid (PFOA), a traditional long-chain PFAS, due to the increasing e...
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MDPI AG
2025-04-01
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| author | Israt Jahan Easmin Ara Tani Harsh V. Patel Renzun Zhao Lifeng Zhang |
| author_facet | Israt Jahan Easmin Ara Tani Harsh V. Patel Renzun Zhao Lifeng Zhang |
| author_sort | Israt Jahan |
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| description | A 6-carbon short-chain per- and polyfluoroalkyl substance (PFAS), GenX, also known as hexafluoropropylene oxide dimer acid (HFPO-DA) and its ammonium salt, has been manufactured in recent years as a replacement for perfluorooctanoic acid (PFOA), a traditional long-chain PFAS, due to the increasing environmental regulation of PFAS compounds in recent years. GenX has received significant attention because of the fact that it is more toxic than people originally thought, and it is now one of the six PFAS compounds that are placed under legally enforceable restrictions in drinking water, i.e., 10 ppt, by the United States Environmental Protection Agency (US EPA). In this research, we extended the use of polyacrylonitrile (PAN) nanofibers from electrospinning for GenX removal from water by coating them with polyaniline (PANI) through in situ polymerization. The obtained PANI-coated electrospun PAN nanofibrous adsorbent (PANI-ESPAN) demonstrated excellent GenX adsorption capability and could remove nearly all GenX (>98%) from a 100 ppb aqueous solution. This research provided valuable insights into short-chain PFAS remediation from water by designing and developing high-performance adsorbent materials. |
| format | Article |
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| institution | OA Journals |
| issn | 2079-6439 |
| language | English |
| publishDate | 2025-04-01 |
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| spelling | doaj-art-75f542abb5964ed3a85c6594f7ac8dff2025-08-20T02:17:20ZengMDPI AGFibers2079-64392025-04-011344210.3390/fib13040042Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from WaterIsrat Jahan0Easmin Ara Tani1Harsh V. Patel2Renzun Zhao3Lifeng Zhang4Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, 2907 E Gate City Blvd, Greensboro, NC 27401, USADepartment of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, 2907 E Gate City Blvd, Greensboro, NC 27401, USADepartment of Civil, Architectural and Environmental Engineering, North Carolina A&T State University, Greensboro, NC 27411, USADepartment of Civil, Architectural and Environmental Engineering, North Carolina A&T State University, Greensboro, NC 27411, USADepartment of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, 2907 E Gate City Blvd, Greensboro, NC 27401, USAA 6-carbon short-chain per- and polyfluoroalkyl substance (PFAS), GenX, also known as hexafluoropropylene oxide dimer acid (HFPO-DA) and its ammonium salt, has been manufactured in recent years as a replacement for perfluorooctanoic acid (PFOA), a traditional long-chain PFAS, due to the increasing environmental regulation of PFAS compounds in recent years. GenX has received significant attention because of the fact that it is more toxic than people originally thought, and it is now one of the six PFAS compounds that are placed under legally enforceable restrictions in drinking water, i.e., 10 ppt, by the United States Environmental Protection Agency (US EPA). In this research, we extended the use of polyacrylonitrile (PAN) nanofibers from electrospinning for GenX removal from water by coating them with polyaniline (PANI) through in situ polymerization. The obtained PANI-coated electrospun PAN nanofibrous adsorbent (PANI-ESPAN) demonstrated excellent GenX adsorption capability and could remove nearly all GenX (>98%) from a 100 ppb aqueous solution. This research provided valuable insights into short-chain PFAS remediation from water by designing and developing high-performance adsorbent materials.https://www.mdpi.com/2079-6439/13/4/42short-chain PFASadsorbentpolyacrylonitrilepolyanilineelectrospinning |
| spellingShingle | Israt Jahan Easmin Ara Tani Harsh V. Patel Renzun Zhao Lifeng Zhang Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from Water Fibers short-chain PFAS adsorbent polyacrylonitrile polyaniline electrospinning |
| title | Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from Water |
| title_full | Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from Water |
| title_fullStr | Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from Water |
| title_full_unstemmed | Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from Water |
| title_short | Polyaniline-Coated Electrospun Polyacrylonitrile Nanofibers for Effective Short-Chain PFAS (GenX) Removal from Water |
| title_sort | polyaniline coated electrospun polyacrylonitrile nanofibers for effective short chain pfas genx removal from water |
| topic | short-chain PFAS adsorbent polyacrylonitrile polyaniline electrospinning |
| url | https://www.mdpi.com/2079-6439/13/4/42 |
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