Nanoscale silver enabled drinking water disinfection system

Kannan, Uthradevi; Pullangott, Gayathri; Singh, Swatantra P.; Maliyekkal, Shihabudheen M.

doi:10.1016/b978-0-12-823874-5.00010-3

Cited by 2 publications

(1 citation statement)

References 161 publications

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“…Besides heavy metal ions, microbial organisms cause immediate and severe health issues worldwide. The Centres for Disease Control and Prevention has expressed that the world is entering a “postantibiotic era”, where mortality will be primarily due to resistant-bacterial diseases. , With challenges faced in disinfection, NCs are emerging as novel antimicrobials. Silver and CuNCs possess high antibacterial activity .…”

Section: Introductionmentioning

confidence: 99%

Cysteine-Protected Antibacterial Spheroids of Atomically Precise Copper Clusters for Direct and Affordable Arsenic Detection from Drinking Water

Shantha Kumar,

Jana,

Raman

et al. 2024

Environ. Sci. Technol. Lett.

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Rapid and naked-eye detection of water-borne contaminants using molecularly precise nanomaterials has emerged as a promising strategy to reduce the impact of chemical pollution. This study presents a luminescence-based arsenic (As) sensor, eliminating the need for sample preparation. Incorporating red-emitting spheroidal cluster-assembled superstructures (CASs), comprised of Cu 17 nanoclusters (Cu 17 NCs), coprotected by L-cysteine (L-Cys) and 1,2bis(diphenylphosphino) ethane (DPPE) ligands, the sensor exhibits notable sensitivity toward arsenite (As 3+ ) and (As 5+ ) ions. A detection limit of 1 ppb in tap water was achieved through luminescence-based quenching. Remarkably, it demonstrates selective detection of As amidst common interfering metal ions such as Cd 2+ , Hg 2+ , Fe 3+ , Pb 2+ , Cu 2+ , and Cr 3+ . A sensor disc made of CASs coated on nonwoven polypropylene (PP) mats has been devised for practical field applications. Electron microscopy reveals disrupted morphology of the spheroids due to As interaction. Moreover, the CASs exhibit significant antibacterial efficacy against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus and antibiofilm properties against Bacillus subtilis. This research highlights the effectiveness of atomically precise clusters for a practical application with direct societal relevance.

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Section: Introductionmentioning

confidence: 99%

Cysteine-Protected Antibacterial Spheroids of Atomically Precise Copper Clusters for Direct and Affordable Arsenic Detection from Drinking Water

Shantha Kumar,

Jana,

Raman

et al. 2024

Environ. Sci. Technol. Lett.

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Nanoparticles for microbial control in water: mechanisms, applications, and ecological implications

Olawade,

Wada,

Fapohunda

et al. 2024

Front. Nanotechnol.

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Waterborne microbial contamination poses significant threats to public health and environmental sustainability. Traditional water treatment methods, while effective to a certain extent, are often limited in their ability to completely eradicate microbial pathogens and mitigate emerging challenges such as disinfection by-products and microbial resistance. In recent years, nanoparticles have emerged as promising candidates for microbial control in water treatment due to their unique physicochemical properties and antimicrobial efficacy. This review provides a comprehensive examination of the use of nanoparticles for microbial control in water treatment, focusing on their antimicrobial mechanisms, applications, and ecological implications. The review discusses the types of nanoparticles commonly used in water treatment, including silver nanoparticles, copper nanoparticles, titanium dioxide nanoparticles, and carbon-based nanoparticles, and examines their antimicrobial mechanisms, such as cell membrane damage, reactive oxygen species generation, and interference with microbial metabolic processes. Furthermore, the review explores the applications of nanoparticles in the disinfection of drinking water, wastewater treatment, water purification in remote areas, and biofilm control. Additionally, the ecological implications of nanoparticle-based water treatment, including nanoparticle release into the environment, environmental persistence, toxicity to non-target organisms, and regulatory challenges, are critically evaluated. Finally, future perspectives and challenges in nanoparticle-based water treatment, such as enhanced nanoparticle synthesis and stability, development of sustainable treatment technologies, integration with conventional methods, and addressing knowledge gaps, are discussed. Overall, this review provides valuable insights into the potential of nanoparticles as innovative tools for addressing microbial contamination in water treatment while highlighting the need for further research and sustainable practices to ensure their safe and effective implementation.

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Nanoscale silver enabled drinking water disinfection system

Cited by 2 publications

References 161 publications

Cysteine-Protected Antibacterial Spheroids of Atomically Precise Copper Clusters for Direct and Affordable Arsenic Detection from Drinking Water

Cysteine-Protected Antibacterial Spheroids of Atomically Precise Copper Clusters for Direct and Affordable Arsenic Detection from Drinking Water

Nanoparticles for microbial control in water: mechanisms, applications, and ecological implications

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