Catalytically Active Bacterial Nanocellulose‐Based Ultrafiltration Membrane |
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| Authors: | Ting Xu Qisheng Jiang Deoukchen Ghim Keng‐Ku Liu Hongcheng Sun Hamed Gholami Derami Zheyu Wang Sirimuvva Tadepalli Young‐Shin Jun Qinghua Zhang Srikanth Singamaneni |
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| Affiliation: | 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, P. R. China;2. Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, USA;3. Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO, USA |
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| Abstract: | Large quantities of highly toxic organic dyes in industrial wastewater is a persistent challenge in wastewater treatment processes. Here, for highly efficient wastewater treatment, a novel membrane based on bacterial nanocellulose (BNC) loaded with graphene oxide (GO) and palladium (Pd) nanoparticles is demonstrated. This Pd/GO/BNC membrane is realized through the in situ incorporation of GO flakes into BNC matrix during its growth followed by the in situ formation of palladium nanoparticles. The Pd/GO/BNC membrane exhibits highly efficient methylene orange (MO) degradation during filtration (up to 99.3% over a wide range of MO concentrations, pH, and multiple cycles of reuse). Multiple contaminants (a cocktail of 4‐nitrophenol, methylene blue, and rhodamine 6G) can also be effectively treated by Pd/GO/BNC membrane simultaneously during filtration. Furthermore, the Pd/GO/BNC membrane demonstrates stable flux (33.1 L m?2 h?1) under 58 psi over long duration. The novel and robust membrane demonstrated here is highly scalable and holds a great promise for wastewater treatment. |
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| Keywords: | bacterial nanocelluloses catalytical activity dye degradation graphene oxides (GOs) palladium nanoparticles |
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