Jang, Ji-Soo Lim, Yunsung Shin, Hamin Kim, Jihan Yun, Tae Gwang 2024-01-19T10:04:47Z 2024-01-19T10:04:47Z 2023-01-13 2023-02 0935-9648 https://pubs.kist.re.kr/handle/201004/114062 Hydroelectric nanogenerators have been previously proposed to recycle various water resources and polluted water. However, as conventional hydroelectric nanogenerators only utilize water resources, they cannot provide a fundamental solution for water recycling. In this study, a water purification membrane is proposed that can simultaneously generate electricity during the purification process (electricity generation and purification membrane (EPM)) for water recycling. As polluted water passes through the EPM, the water is purified in the perpendicular direction, while electricity is simultaneously produced in the horizontal direction by the movement of ions. Notably, the EPM exhibits high energy generation performance (maximum power 16.44 mu W and energy 15.16 mJ) by the streaming effect of water-streaming carbon nanotubes (CNTs). Moreover, by using a poly(acrylic acid)/carboxymethyl cellulose (PAA/CMC) binder to EPM, the energy-generation performance and long-term stability are substantially improved and outstanding mechanical stability is provided, regardless of the acidity of the water source (pH 1-10). More importantly, the EPM exhibits the water purification characteristics of >90% rejection of sub-10 nm pollutants and potentiality of angstrom level cation rejection, with simultaneous and continuous energy generation. Overall, this study proposes an efficient EPM model, which can be potentially used as a next-generation renewable energy generation approach, thus laying the foundation for effective utilization of polluted water resources. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Bidirectional Water-Stream Behavior on a Multifunctional Membrane for Simultaneous Energy Generation and Water Purification Article 10.1002/adma.202209076 1 Advanced Materials, v.35, no.7 Advanced Materials 35 7 N scie scopus 000904005700001 2-s2.0-85145202540 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Early Access bifunctional membranes binders carbon nanotubes hydroelectric nanogenerators power generation water purification