Production of Nanofibers Composed of CuO for the Removal of Pb(II) from Aqueous Solutions

Metals, Journal Year: 2025, Volume and Issue: 15(1), P. 56 - 56

Published: Jan. 10, 2025

Pollution by heavy metals such as lead is a major concern, since exposure to these can various adverse health effects. In this work, nanofibers composed of CuO (CuONFs) were developed novel and promising material for Pb(II) adsorption. There have been no previous reports concerning the production polyacrylonitrile modified with copper sulfate pentahydrate, followed calcination, be utilized adsorbent. The obtained using centrifugal spinning method then characterized before after calcination step analytical techniques. Adsorption parameters investigated, including pH, contact time, adsorbate concentration, temperature. Satisfactory Pb (II) adsorption was reached at 298 K, pH 5.8, maximum 151.34 mg g−1 achieved, predicted Hill model. kinetic data proved that better fitted pseudo-second-order model, while model confirmed best fit equilibrium data. Thermodynamic demonstrated favorable, spontaneous, exothermic. CuONFs maintained 97.51% their initial capacity two adsorption/desorption cycles. results showed excellent potential an adsorbent Pb(II), also showing high stability during reuse.

Language: Английский

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A Comparative Study on Centella Asiatica‐Mediated Green Synthesis of Silver and Copper Oxide Nanoparticles: Implications for Wound Healing

Particle & Particle Systems Characterization, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Abstract Conventional wound dressings often lack efficient antimicrobial properties and may exhibit limited bio‐compatibility, necessitating the development of advanced solutions for effective healing. Green synthesis nanoparticles opens door to a strategy that is in terms pharmaceutical biotechnology, besides being nontoxic eco‐friendly. In present study, Centella asiatica leaf extract conjugated with silver copper oxide are synthesized their bioactivity compared. Gas chromatography mass spectrometry (GC‐MS) results show 4‐butoxy‐1‐Butanol, Phthalic acid, 2‐propyldecan‐1‐ol as major phytochemicals . The green‐synthesized (Ag‐NPs) (CuO‐NPs) characterized using transmission electron microscopy (TEM), X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR). TEM confirm circular morphology Ag‐NPs elliptical structures CuO‐NPs, whereas energy dispersive x‐ray (EDX) spectrum confirms presence Cu Ag respective samples. XRD both high crystallinity. Both demonstrate satisfactory radical scavenging activity confirmed by 2,2‐Diphenyl‐1‐picrylhydrazyl (DPPH) assay. CuO‐NPs greater antibacterial against Escherichia coli ( E. ) Methicillin‐resistant Staphylococcus aureus MRSA comparison evident from clear zone inhibition obtained. conclusion, green prove have enhanced healing NIH3T3 fibroblast cells than Ag‐NPs.

Language: Английский

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Valorization of noni-leaf tea as a by-product of nanofiltration for the green synthesis of copper oxide nanoparticles with improved antimicrobial properties

Materials Science and Engineering B, Journal Year: 2025, Volume and Issue: 317, P. 118172 - 118172

Published: Feb. 28, 2025

Language: Английский

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The Composition of the Dispersion Medium Determines the Antibacterial Properties of Copper (II) Oxide Nanoparticles Against Escherichia coli Bacteria

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(6), P. 469 - 469

Published: March 20, 2025

Copper (II) oxide nanoparticles (CuO NPs) attract much attention as a promising antimicrobial agent. We studied the antibacterial properties of three types CuO NPs against Escherichia coli bacteria: flake-shaped particles with diameter 50–200 nm and thickness 10–20 (CuO-CD synthesized by chemical deposition), spherical size 20–90 (CuO-EE obtained electrical explosion), rod-shaped length 100–200 30 × 70 (CuO-CS commercial sample). tested how shape, size, concentration NPs, composition dispersion medium affected NPs. prepared dispersions based on distilled water, 0.9% NaCl solution, LB broth Lennox used Triton X-100 sodium dodecyl sulfate (SDS) stabilizers. The was 1–100 mg L−1. showed that stabilizer type had greatest influence effects observed maximum effect for all NP dispersed in water without stabilizer, well SDS stabilizer. inhibition culture growth under CuO-EE (by 30%) 1.3–1.8 times depending particles). In saline were minimal; some cases, even promoted bacterial growth. increased but decreased them water. Finally, among particle types, CuO-CS turned out to be most bactericidal, which is probably due their morphology small diameter. At same time, aggregation colloidal systems we did not have linear action properties. These results can development coatings preparations achieve efficiency, taking into account expected conditions use.

Language: Английский

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Surfactant-Mediated Transport of Copper Oxide Nanoparticles in Porous Media: Effects of Electrolytes, Phosphate and Organic Matter

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Authenticating the green synthesised CuONPs through XRD profiles

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

The efficient conversion of copper nanoparticles (CuNPs) to oxide (CuO) is significant importance for applications in catalysis and antibacterial activity. While green synthesis methods CuO (CuONPs) have gained widespread attention, inconsistencies X-ray diffraction (XRD) profiles across studies suggest variations the final product's structural properties. This study conducts a comprehensive literature review 125 published articles compare XRD NPs produced via chemical synthesis. Specifically, we investigate impact thermal annealing on optical properties CuONPs. Our findings reveal that at optimal temperatures facilitates formation homogeneous crystalline structure, characterized by distinct profile featuring two prominent peaks with 'rugby goal-like' shape. characteristic pattern consistently observed both chemically green-synthesized NPs. However, absence annealing, CuONPs exhibit an atypical profile, significantly differing from annealed samples. These results underscore critical role treatment optimizing highlight need further research into nature products without annealing.

Language: Английский

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Nanoparticles in Endodontics

Published: April 28, 2025

Nanotechnology has emerged as a transformative innovation in endodontics, significantly enhancing the effectiveness of root canal treatments and promoting tissue regeneration. The application nanomaterials endodontic procedures offers improved disinfection, enhanced mechanical properties dental materials, potential for regenerative healing. Due to their small size large surface area, nanoparticles can deeply penetrate dentinal tubules, providing superior antimicrobial action reducing risk reinfection compared conventional methods. Nanomaterials also enhance strength, fracture resistance, adhesion sealers, thus increasing durability treatments. Moreover, nanotechnology shows promise pulp regeneration by facilitating targeted drug delivery supporting stem cell differentiation. Despite these advancements, challenges regarding safety, toxicity, long-term biocompatibility remain, necessitating ongoing research. This review explores current applications future highlighting its role improving therapy outcomes advancing care.

Language: Английский

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Green Synthesis of Antibacterial CuO Nanoparticles Based on the Synergy Between Cornu aspersum Snail Mucus and Ascorbic Acid

Molecules, Journal Year: 2025, Volume and Issue: 30(2), P. 291 - 291

Published: Jan. 13, 2025

Many biologically active compounds have been identified in the mucus of garden snail Cornu aspersum, which are effective treatment several diseases such as cancer, ulcers, wounds, etc. The incorporation these into green synthesis copper nanoparticles (CuONPs-Muc) was demonstrated our previous study. Based on synergistic effect two reducing agents—C. aspersum and ascorbic acid (AsA)—on CuSO4.5H2O, also act stabilizers resulting compound, a new method for “green” CuONPs-Muc is presented. Using agents has advantages, forming spherical with diameter about 150 nm formation time to 3 h. Analyses by ultraviolet–visible spectroscopy (UV-Vis) Fourier transform infrared (FT-IR) show CuONPs-Muc, composed mixture oxide. This confirmed scanning electron microscopy combined energy-dispersive (SEM/EDS) X-ray diffraction (XRD). Another important advantage CuONPs obtained stronger inhibitory bacterial growth some Gram-positive Gram-negative strains, compared prepared only one agent, i.e., fraction an MW > 20 kDa.

Language: Английский

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Multifunctional Copper (I) Oxide Nanoparticles: Photocatalytic Degradation of Tetracycline, Antibacterial, and Anticancer Activities

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(4)

Published: Jan. 1, 2025

Abstract The increasing use of metal oxide nanoparticles demands a better understanding their health impact. Here, we report the synthesis copper (I) (Cu 2 O NPs) using cost‐effective chemical methods and assessed photocatalytic, antibacterial, anticancer properties. X‐ray diffraction (XRD) pattern verified its cubic structure. average crystallite size 11 nm was obtained Scherrer method. Fourier transform infrared (FTIR) spectroscopy confirmed formation Cu NPs. spherical morphology through field emission scanning electron microscopy (FESEM) analysis. High‐resolution transmission (HRTEM) estimated to be around 15 nm. photoelectron (XPS) spectra NPs showed peaks at 931.75 951.82 eV, corresponding 2p 3/2 1/2 , respectively. UV–vis revealed optical direct bandgap (2.33 eV) Under light irradiation, catalyst achieved tetracycline (TC) degradation efficiency 80% within 75 min. antibacterial properties against Klebsiella pneumoniae Bacillus subtilis agar disk diffusion have been investigated. also exhibited significant activity MCF‐7 cancer cells MTT assay, with an IC 50 value 18.88 µg/mL.

Language: Английский

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Dual-functional copper oxide nanofluids for transformer: Synergistic enhancement of antimicrobial and insulating properties

AIP Advances, Journal Year: 2025, Volume and Issue: 15(5)

Published: May 1, 2025

Oil in transformer insulation systems critically safeguards grids, yet microbial contamination catastrophically compromises dielectric integrity, threatening grid resilience worldwide. To address this dual challenge of biocontamination and degradation, we engineered bifunctional copper oxide nanofluids (CuO NFs) through crystallographic tailoring surface charge optimization. Two dominant actinomycetes (Mycoplana Rothia), isolated from operational transformers, achieved up to 98.19% 96.32% inactivation rates when exposed CuO NFs, coupled with a 1.62-fold increase AC breakdown voltage compared base oil, owing the designed monoclinic-phase nanoparticles (+20.14 ± 1.5 mV) that disrupted integrity via electrostatic adhesion reactive oxygen species (ROS) generation, which is first demonstration nanoscale ROS-mediated antimicrobial mechanisms oil-immersed systems. This work provides robust strategy for development NFs mitigate enhance insulating properties.

Language: Английский

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