Cerium-doped sulfur quantum dots for the detection of lead ions and the use of anticounterfeiting ink

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 701, С. 134845 - 134845

Опубликована: Июль 24, 2024

Язык: Английский

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Fluorometric detection of copper and imidacloprid using nitrogen‐doped graphitic carbon dots: A promising method for environmental monitoring

Luminescence, Год журнала: 2024, Номер 39(8)

Опубликована: Авг. 1, 2024

Abstract Pesticides in environmental samples pose significant risks to ecosystems and human health since they require precise efficient detection methods. Imidacloprid (IMI), a widely used neonicotinoid insecticide, exemplifies these hazards due its potential toxicity. This study addresses the urgent need for improved monitoring of such contaminants by introducing novel fluorometric method detecting IMI using nitrogen‐doped graphite carbon dots (N‐GCDs). The sensor operates quenching fluorescence through interaction Cu 2+ ions with N‐GCDs. Subsequently, binds imidazole group, chelates , restores alternating behavior allows accurate identification both IMI. exhibits linear ranges 20–100 nM 10–140 μg/L IMI, limits 18 1.2 μg/L, respectively. high sensitivity this enables real‐world samples, which underscores practical use agricultural safety.

Язык: Английский

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Synthesis of Aluminum Oxide (Al₂O₃) Nanoparticles Decorated With Polymeric Carbon (Al₂O₃/AC) Nanocomposites for High Specific Capacitance Value

Polymers for Advanced Technologies, Год журнала: 2024, Номер 35(10)

Опубликована: Окт. 1, 2024

ABSTRACT Aluminum oxide nanoparticles/activated carbon (Al 2 O 3 NPs/AC) nanocomposite were synthesized using an optimized sol–gel synthesis method. Various characterization techniques, including x‐ray, field emission scanning electron microscopy (FE‐SEM), Fourier transform infrared (FTIR), UV–visible spectroscopy and cyclic voltammetry, employed electrochemical properties of the prepared samples. X‐ray diffraction (XRD) analysis revealed higher crystal plane intensities in Al NPs compared to /AC nanocomposites. The average crystallite size was determined be 32 nm for 20 FE‐SEM showcased agglomeration NPs, while composite exhibited agglomerated embedded It found that band gaps 5.5 5.6 eV, respectively. Electrochemical through voltammetry demonstrated specific capacitance nanocomposites six times than NPs. This comprehensive investigation provides valuable insights into enhanced performance nanocomposites, suggesting its potential application energy storage devices.

Язык: Английский

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Green Ferrites: Eco‐Friendly Synthesis to Applications in Environmental Remediation, Antimicrobial Activity, and Catalysis—A Comprehensive Review

Applied Organometallic Chemistry, Год журнала: 2025, Номер 39(2)

Опубликована: Янв. 14, 2025

ABSTRACT Ferrite magnetic materials have emerged as capable in engineering, research, and medicine because of their exclusive fascinating properties obtained from a variety synthesis techniques. These ferrites are significant commercial products, biomedical applications. Green methods for ferrite nanocomposites nanoparticles becoming increasingly popular due to usefulness range industries, environmental, medicinal remediation. (MFe 2 O 4 , where M = Ni, Cu, Mg, Co, Zn, Mn) recently gained popularity many uses biological, chemical interactions. This review covers the most recent investigations over last few years on green‐synthesized nanoparticles, containing nanocomposites, more elements, with focus microorganism‐mediated plant‐based processes. The surface features synthesized green discussed, is potential sensors, energy, water treatment, antibacterial activity, heavy metal removal article presents an inclusive overview ferrites, including research advances findings. To fully realize promise nanoferrites several fields, thorough understanding manufacturing, properties, applications essential. Green‐synthesized chosen improved control particle size shape, lower cost, decreased toxicity, environmental friendliness, all which preserve that better than those conventionally making them sustainable choice

Язык: Английский

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Phytogenic synthesis of silver nanoparticles using Ecbolium ligustrinum (Vahl) Volleson leaf extract for investigation of its in vitro biological applications and photocatalytic activity for the reduction of methylene blue

Journal of Molecular Liquids, Год журнала: 2025, Номер unknown, С. 127347 - 127347

Опубликована: Март 1, 2025

Язык: Английский

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Synthesis and catalytic activity of silver- reduced graphene oxide and silver- magnetite- reduced graphene oxide nanocomposites in the reduction of 4-nitrophenol

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 25, 2025

The catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) is vital for environmental remediation. This study synthesizes and assesses silver-reduced graphene oxide (Ag/rGO) silver-magnetite-reduced (Ag/Fe2O4/rGO) nanocomposites 4-NP reduction. Various reducing agents-ascorbic acid (AA), hydrazine hydrate (HH), sodium borohydride (SBH), cellulose nanofibers (NFC)-were employed under reflux (R), hydrothermal (H), ultrasonic (U) conditions. Drying methods (oven-drying (O) freeze-drying (F)) CTAB as a stabilizer were explored optimize Ag NP distribution. characterized using FT-IR, XRD, FE-SEM, EDS, TEM, BET, TGA, ICP-OES, VSM. XRD confirmed formation with crystallite sizes 12-23 nm. FE-SEM TEM showed uniform distribution cubic Fe2O4 spherical NPs (approximately 50 nm) on GO. Ag/Fe2O4/rGO(O)-AA-U-F nanocomposite demonstrated the highest activity, pseudo-first-order rate constant (k) 1.81 min-1 specific activity parameter (k') 180.77 min-1.g-1. exhibited mesoporous structure high surface area (226.9 m2/g) nanoparticle rGO. combination ascorbic (AA) (F) yielded superior performance due their porous dispersion.

Язык: Английский

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Fabrication of MnO2/g-C3N4 nanocomposite for methylene blue dye degradation under light illumination

Inorganic Chemistry Communications, Год журнала: 2024, Номер 168, С. 112909 - 112909

Опубликована: Июль 30, 2024

Язык: Английский

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Plant-Mediated Synthesis of Metal Oxide (CuO&MgO) Nanocomposites for the Suppression of Drug-Resistant Pathogens

Waste and Biomass Valorization, Год журнала: 2024, Номер unknown

Опубликована: Окт. 8, 2024

Язык: Английский

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Bio-fabrication of Gold Nanoparticles Using Codariocalyx motorius for Antimicrobial, Antioxidant and Anticancer Activity

Waste and Biomass Valorization, Год журнала: 2024, Номер unknown

Опубликована: Окт. 26, 2024

Язык: Английский

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Fluorescent Microscopy Investigation of Cytotoxic Impact on MCF‐7 Cell Line Treated With Zinc Nanoparticles Synthesized From Jania rubens

Luminescence, Год журнала: 2024, Номер 39(11)

Опубликована: Окт. 31, 2024

Zinc nanoparticles (ZnNPs) are a viable option in number of disciplines, including cancer treatment, due to their special features. Among the several techniques for synthesizing ZnNP, biosynthesis with natural extracts is highly effective and environmentally benign method, especially uses biomedicine. Using an aqueous extract marine red seaweed Jania rubens, we created unique biosynthetic technique this study manufacture ZnNPs. The produced ZnNPs have characteristic flower-like form, as seen by scanning electron microscopy (SEM) transmission (TEM). production involvement biomolecules synthesis process were validated energy-dispersive X-ray spectroscopy (EDAX) Fourier transform infrared (FTIR) techniques. MTT assay, cytotoxic effects biosynthesized evaluated, indicating ability inhibit MCF-7 breast cells. Furthermore, ZnNPs' cytotoxicity against cells was live/dead imaging experiments, which supported results.

Язык: Английский

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