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MXene and Silver Intercalated Graphene Oxide Membrane with Antibacterial Performance for High-Permeability Micro/Nanoplastics Removal
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Researchers built a water filter membrane combining graphene oxide, silver nanoparticles and MXene material, testing it in lab conditions, tap water and rainwater. The membrane removed over 99.9% of micro/nanoplastics, allowed water to pass through quickly, resisted bacteria, and kept working after 20 filtration cycles and 48 hours of continuous use.
Separation membranes intended for micro/nanoplastics (MPs) removal from drinking water are still-largely constrained-by-low permeability, poor antibacterial activity, and insufficient cycling stability. In-this work, silver nanoparticles (AgNPs) were reduced in situ on graphene oxide (GO) to-form AgrG composite which were then hybridized-with MXene to fabricate AgrG-M membrane for efficient-MPs removal-from water. The AgrG-M membrane features a-large interlayer spacing, resulting in-high permeability (353.95 L m −2 h −1 bar −1 ) and a satisfactory MPs removal efficiency of over 99.9%. In addition, the incorporation of AgNPs endows the hybrid membrane with excellent broad-spectrum antibacterial activity, and the leaching concentration of silver ions in the effluent fully complies with the limits of drinking water standards, which guarantees the biosafety for practical application. Further stability evaluations confirm that the membrane maintains outstanding stability in solutions with a wide pH range of 3–11; long-term separation tests show that the MPs removal rate remains above 99.9% during 48 h of continuous operation, and the membrane permeability only declines by 10.4% after 20 consecutive filtration cycles. Under real-world conditions, the membrane also shows remarkable MPs removal performance in tap water and rainwater. In summary, the prepared AgrG-M hybrid membrane exhibits significant application potential and practical value for the advanced purification of drinking water containing MPs.
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Scientists created a new filter membrane using graphene oxide and a common plastic-safe polymer, designed to trap microplastics from water. In tests, it removed over 90% of one common plastic type (HDPE, found in bottles and containers) and up to 78% of another (polystyrene, used in packaging and foam), and it could be reused multiple times while still working fairly well. This matters because microplastics are increasingly found in our drinking water and bodies, and better filtration technology like this could eventually help reduce our exposure to these pollutants — though the filter still needs improvement before it's ready for widespread use.
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COMPOSITE MEMBRANES BASED ON MXene AND NANOCELLULOSE: PROPERTIES AND WATER PURIFICATION EFFICIENCY
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Researchers reviewed composite membranes based on MXene and nanocellulose for water purification, evaluating their ability to remove heavy metals, dyes, pharmaceuticals, and microplastics. The membranes demonstrated high removal efficiency across contaminant types due to their large surface area and tunable charge properties.
Current Status and Advancement of Nanomaterials within Polymeric Membranes for Water Purification
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This review examines advances in nanomaterial-enhanced polymeric membranes for water purification, including the removal of contaminants like heavy metals, organic pollutants, and microplastics. Researchers highlight how integrating materials such as metal nanoparticles, nanofibers, and graphene oxide can improve membrane performance for filtering various waterborne pollutants. The study suggests these technologies hold promise for addressing growing challenges in water contamination.
Nanosized Graphene‐Based Hybrid Architectures for Combating Microplastic Pollution From Water: Materials Design, Mechanisms, and Applications
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Microplastics, tiny plastic particles now found in our water, food, and even bodies, are a growing health concern, and this review rounds up research on using graphene (a super-thin, highly absorbent material) to filter them out of water. Scientists are engineering different graphene-based materials that can trap microplastics like a magnet or break them down using light-activated reactions, offering a promising path toward cleaner drinking water. While this paper doesn't test the technology itself, it maps out the most effective strategies so far, bringing us closer to practical solutions for reducing our exposure to these pervasive pollutants.
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