Role of Nanomaterials in the Treatment of Wastewater: A Review

Water, Journal Year: 2020, Volume and Issue: 12(2), P. 495 - 495

Published: Feb. 12, 2020

Water is an essential part of life and its availability important for all living creatures. On the other side, world suffering from a major problem drinking water. There are several gases, microorganisms toxins (chemicals heavy metals) added into water during rain, flowing water, etc. which responsible pollution. This review article describes various applications nanomaterial in removing different types impurities polluted kinds nanomaterials, carried huge potential to treat (containing metal toxin substance, organic inorganic impurities) very effectively due their unique properties like greater surface area, able work at low concentration, The nanostructured catalytic membranes, nanosorbents nanophotocatalyst based approaches remove pollutants wastewater eco-friendly efficient, but they require more energy, investment order purify wastewater. many challenges issues treatment. Some precautions also required keep away ecological health issues. New modern equipment treatment should be flexible, cost efficient commercialization purpose.

Language: Английский

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Trends in Micro‐/Nanorobotics: Materials Development, Actuation, Localization, and System Integration for Biomedical Applications

Advanced Materials, Journal Year: 2020, Volume and Issue: 33(4)

Published: Dec. 4, 2020

Abstract Micro‐/nanorobots (m‐bots) have attracted significant interest due to their suitability for applications in biomedical engineering and environmental remediation. Particularly, vivo diagnosis intervention been the focus of extensive research recent years with various clinical imaging techniques being applied localization tracking. The successful integration well‐designed m‐bots surface functionalization, remote actuation systems, becomes crucial step toward applications, especially uses. This review thus addresses four different aspects m‐bots: design/fabrication, actuation, localization. diagnosis, sensing, microsurgery, targeted drug/cell delivery, thrombus ablation, wound healing are reviewed from these viewpoints. developed m‐bot systems comprehensively compared evaluated based on characteristics. current challenges directions future this field summarized.

Language: Английский

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One-step preparation (3D/2D/2D) BiVO4/FeVO4@rGO heterojunction composite photocatalyst for the removal of tetracycline and hexavalent chromium ions in water

Chemical Engineering Journal, Journal Year: 2020, Volume and Issue: 390, P. 124522 - 124522

Published: Feb. 21, 2020

Language: Английский

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MnO₂‐Based Materials for Environmental Applications

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(9)

Published: Jan. 14, 2021

Abstract Manganese dioxide (MnO 2 ) is a promising photo–thermo–electric‐responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory purification efficiency of this has limited further applications. Fortunately, in last few years, significant efforts have been undertaken improving and understanding underlying mechanism. Here, aim summarize recent experimental computational research progress modification MnO single species by morphology control, structure construction, facet engineering, element doping. Moreover, design fabrication ‐based composites via construction homojunctions /semiconductor/conductor binary/ternary heterojunctions discussed. Their applications systems, either as an adsorbent removing heavy metals, dyes, microwave (MW) pollution, or thermal catalyst, photocatalyst, electrocatalyst degradation pollutants (water gas, organic inorganic) are also highlighted. Finally, gaps summarized perspective on challenges direction future nanostructured materials field presented. Therefore, basic guidance rational high‐efficiency comprehensive provided.

Language: Английский

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Photocatalytic TiO₂ Micromotors for Removal of Microplastics and Suspended Matter

ACS Applied Materials & Interfaces, Journal Year: 2019, Volume and Issue: 11(36), P. 32937 - 32944

Published: Aug. 20, 2019

Environmental contamination is a major global challenge, and the effects of are found in most habitats. In recent times, pollution by microplastics has come to attention their removal displays an extraordinary challenge with no reasonable solutions presented so far. One new technologies holding many promises for environmental remediation on microscale self-propelled micromotors. They present several properties that academic technical interest, such as ability overcome diffusion limitation catalytic processes, well phoretic interaction environment. Here, we two novel strategies elimination using photocatalytic Au@Ni@TiO2-based We show individual particles assembled chains excellent collection suspended matter from water samples.

Language: Английский

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Recent Advances in Nano‐ and Micromotors

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(12)

Published: Jan. 21, 2020

Abstract Nano‐ and micromotors are fascinating objects that can navigate in complex fluidic environments. Their active motion be triggered by external power sources or they exhibit self‐propulsion using fuel extracted from their surroundings. The research field is rapidly evolving has produced nano/micromotors of different geometrical designs, exploiting a variety mechanisms locomotion, being capable achieving remarkable speeds diverse environments ranging simple aqueous solutions to media including cell cultures animal tissue. This review aims provide an overview the recent developments with focus on predominantly experimental demonstrations various motor designs developed past 24 months. First, externally driven motors discussed followed considering fuel‐driven approaches. Finally, short future perspective provided.

Language: Английский

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Magnetic Microswarm and Fluoroscopy‐Guided Platform for Biofilm Eradication in Biliary Stents

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(34)

Published: April 27, 2022

Biofilm eradication from medical implants is of fundamental importance, and the treatment biofilm-associated pathogen infections on inaccessible biliary stents remains challenging. Magnetically driven microrobots with controlled motility, accessibility to tiny lumen, swarm enhancement effects can physically disrupt deleterious biostructures while not developing drug resistance. Magnetic urchin-like capsule robots (MUCRs) loaded magnetic liquid metal droplets (MLMDs, antibacterial agents) are designed using natural sunflower pollen, therapeutic effect swarming MUCR@MLMDs explored for eradicating complex mixtures bacterial biofilm within collected patients. The external field triggers emergence microswarm induces MLMDs transform their shape into spheroids rods sharp edges. inherent microspikes MUCRs obtained edges actively rupture dense biological matrix multiple species embedded cells by exerting mechanical force, finally achieving synergistic eradication. precisely rapidly deployed stent via endoscopy in 10 min. Notably, fluoroscopy imaging used track navigate locomotion real-time. has great potential treating associated implants.

Language: Английский

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Self-Propulsion of Chemically Active Droplets

Annual Review of Fluid Mechanics, Journal Year: 2022, Volume and Issue: 55(1), P. 77 - 101

Published: Oct. 31, 2022

Microscopic active droplets are able to swim autonomously in viscous flows. This puzzling feature stems from solute exchanges with the surrounding fluid via surface reactions or their spontaneous solubilization and interfacial flows resulting these solutes’ gradients. Contrary asymmetric colloids, isotropic spontaneously by exploiting nonlinear coupling of transport self-generated Marangoni flows; such is also responsible for secondary transitions more complex individual collective dynamics. Thanks simple design sensitivity physico-chemical signals, fascinating physicists, chemists, biologists, dynamicists alike analyzing self-propulsion dynamics active-matter systems, developing synthetic cellular models, performing targeted biomedical engineering applications. I review here most recent significant developments this rapidly growing field, focusing on mathematical physical modeling intriguing droplets, together experimental characterization.

Language: Английский

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Microplastics in sewage sludge: Distribution, toxicity, identification methods, and engineered technologies

Chemosphere, Journal Year: 2022, Volume and Issue: 308, P. 136455 - 136455

Published: Sept. 15, 2022

Language: Английский

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Pick up and dispose of pollutants from water via temperature-responsive micellar copolymers on magnetite nanorobots

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: March 1, 2022

Abstract Nano/micromotor technology is evolving as an effective method for water treatment applications in comparison to existing static mechanisms. The dynamic nature of the nano/micromotor particles enable faster mass transport and a uniform mixing ensuring improved pollutant degradation removal. Here we develop thermosensitive magnetic nanorobots (TM nanorobots) consisting pluronic tri-block copolymer (PTBC) that functions hands These TM are incorporated with iron oxide (Fe 3 O 4 ) nanoparticles active material propulsion. pickup disposal toxic pollutants monitored by intermicellar agglomeration separation PTBC at different temperatures. as-prepared show excellent arsenic atrazine removal efficiency. Furthermore, adsorbed contaminants on can be disposed simple cooling process exhibit good recovery retention after multiple reuse cycles. This combination temperature sensitive aggregation/separation coupled propulsion opens plethora opportunities applicability targeted approaches.

Language: Английский

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