Visible light-driven sliver-modified titanium dioxide / bismuth molybdenum oxide with rapid interfacial charge-transfer for dual highly efficient photocatalytic degradation and disinfection

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 653, P. 285 - 295

Published: Sept. 12, 2023

Language: Английский

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Biosynthesis and biocompatibility evaluation of zinc oxide nanoparticles prepared using Priestia megaterium bacteria

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 20, 2024

Abstract The current study aimed to find an effective, simple, ecological, and nontoxic method for bacterial green synthesis of zinc oxide nanoparticles (ZnONPs) using the strain Priestia megaterium BASMA 2022 (OP572246). biosynthesis was confirmed by change in color cell-free supernatant added nitrate from yellow pale brown. (Pm/ZnONPs) were characterized UV–Vis spectroscopy, high-resolution transmission electron microscopy (HR-TEM), energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared (FTIR), zeta potential. Pm/ZnONPs characterization showed that they have a size ranging between 5.77 13.9 nm with semi-sphere shape is coated protein-carbohydrate complex. An EDX analysis revealed presence shield matrix, which composed carbon, nitrogen, oxygen, chlorine, potassium, sodium, aluminum, sulfur, zinc. results FTIR reduction stabilization salt solution caused O–H alcohols phenols, O=C=O stretching carbon dioxide, N=C=S isothiocyanate, N–H bending amine functional groups. produced ZnONPs had good stability charge − 16.2 mV, as evidenced potential analysis. MTT assay IC 50 values 8.42% 200%, respectively, human A375 skin melanoma bone marrow 2M-302 cell lines. These findings obtained biocompatibility be applied pharmaceutical biomedical sectors.

Language: Английский

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Antibacterial Activity, Cell Wall Damage, and Cytotoxicity of Zinc Oxide Nanospheres, Nanorods, and Nanoflowers

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(13), P. 15242 - 15254

Published: June 24, 2024

Nowadays, zinc oxide nanoparticles (ZnO NPs) have been shown to exhibit potent antibacterial activity against a wide range of pathogenic bacteria. Numerous investigations delved into exploring the activities exhibited by ZnO NPs. Notwithstanding, correlation between morphology these and their resultant impacts remains an area demanding further exploration across varying morphological variations. This paper presents comparative study on how affects efficacy. In this regard, NPs with different morphologies, including spherical, rod-like, flower-like structures, were synthesized via modified precipitation method characterized using X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM), dynamic light scattering (DLS), Brunauer–Emmett–Teller (BET) analysis, reactive oxygen species (ROS) techniques. The was evaluated Gram-positive bacterium (Staphylococcus aureus) two Gram-negative bacteria (Escherichia coli Pseudomonas aeruginosa) through disk diffusion, minimum inhibitory concentration (MIC), bactericidal (MBC) tests, cytotoxicity assessed MTT assay. results showed that rod-like highest both Conversely, spherical displayed lowest activity. Remarkably, assessments exerted toxicity toward HepG2 human dermal fibroblasts (HDF) cells, whereas demonstrated least cytotoxic effects. extent cell membrane damage determined measuring DNA RNA leakage, visual confirmation FESEM imaging. provide valuable insights relationship nanoparticle efficacy, shedding mechanisms underlying superior morphology. Overall, findings designing developing efficient agents minimal adverse effects, opening up avenues for future research in nanomedicine biomedical applications.

Language: Английский

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Tuning of Structural, Magnetic, and Optical Properties of ZnO Nanoparticles by Co and Cu Doping

Solid State Communications, Journal Year: 2024, Volume and Issue: 390, P. 115616 - 115616

Published: Oct. 1, 2024

Language: Английский

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Growth of ZnO Polytypes: Multiple Facets of Diverse Applications

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(3), P. 871 - 885

Published: Jan. 12, 2024

Zinc oxide has been considered as a specific and versatile bridging agent that bears an intrinsic relationship with the crystal structure–property application in physics, chemistry, materials, biomedical sciences. Due to inherent polytypism through abundance of structures, properties can interconnect from classical (bulk structures) quantum (nanostructures) regimes have subject immense investigation using theoretical, experimental, simulation perspectives. Prudent advances synthetic strategies offered opportunity achieve diverse morphologies ultrasmall hierarchical superstructures employing chemical manipulation, possibility maneuvering patterns marked zinc attractive recipe buffet modern materials research. The interplay between mere variation crystalline structures spatial confinement ZnO at nanoscale dimension become epicenter emergence unique physicochemical characteristics be exploited range niche multifarious applications. Moreover, ease syntheses which mostly follow green techniques, cost effectiveness, physical stability, biocompatibility made semiconductor great interest past three decades. An n-type wide band gap large exciton binding energy rendered fundamental material synergism semiconducting, optoelectronic, piezoelectric, pyroelectric, photocatalytic, biological outstanding industrial technological control crystallinity manipulation particle shape, size, exposed facets, composition, doping imbues tailored pursue preconceived Althouth onset research traced back nearly century ago, renewed rekindled accessibility high-quality single crystals, facile synthesis various nanostructures, availability p-type cornerstone. Based on these contexts backstage, it is now time condense voluminous work assess conceptive, rationalize perpectives crystallographic properties, design objectives explore future applications realm present major global challenges field energy, environment,

Language: Английский

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High-quality dense ZnO thin films: work function and photo/electrochemical properties

Journal of Solid State Electrochemistry, Journal Year: 2024, Volume and Issue: 28(8), P. 2531 - 2546

Published: Jan. 24, 2024

Abstract Compact ZnO (wurtzite) thin films are prepared on four different substrates by (i) spray pyrolysis or (ii) pulsed reactive magnetron sputtering combined with a radio frequency electron cyclotron wave resonance plasma. Films characterized AFM, XRD, Kelvin probe, cyclic voltammetry, electrochemical impedance spectroscopy, and UV photoelectrochemistry. Film morphologies, defect concentrations, crystallite size, orientation provided specific fingerprints for the electronic structure of close to conduction band minimum. Fabricated referenced, if relevant, model system based wurtzite single crystal either Zn-face O-face termination. probe measurements ZnO/air interface distinguished effects annealing excitation, which attributed removal oxygen vacancies surface. In turn, work function, at interface, specifically addressed growth protocol electrodes but not crystallinity annealing. Finally, high photocurrents water oxidation observed exclusively virgin films. This effect is then discussed in terms photocorrosion, function changes due light. Graphical

Language: Английский

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Green Synthesis of Zinc Oxide Nanoparticles: Preparation, Characterization, and Biomedical Applications - A Review

International Journal of Nanomedicine, Journal Year: 2024, Volume and Issue: Volume 19, P. 12889 - 12937

Published: Dec. 1, 2024

Abstract: Over the last decade, biomedical nanomaterials have garnered significant attention due to their remarkable biological properties and diverse applications in biomedicine. Metal oxide nanoparticles (NPs) are particularly notable for wide range of medicinal uses, including antibacterial, anticancer, biosensing, cell imaging, drug/gene delivery. Among these, zinc (ZnO) NPs stand out versatility effectiveness. Recently, ZnO become a primary material various sectors, such as pharmaceutical, cosmetic, antimicrobials, construction, textile, automotive industries. can generate reactive oxygen species induce cellular apoptosis, thus underpinning potent anticancer antibacterial properties. To meet growing demand, numerous synthetic approaches been developed produce NPs. However, traditional manufacturing processes often involve economic environmental costs, prompting search more sustainable alternatives. Intriguingly, synthesis methods utilizing plants, plant extracts, or microorganisms emerged ideal producing These green production techniques offer medicinal, economic, environmental, health benefits. This review highlights latest advancements applications, showcasing potential revolutionize field with eco-friendly cost-effective solutions. Keywords: antimicrobial, antioxidant, synthesis, nanomedicine, nanoparticle,

Language: Английский

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Water-soluble as well as bio-compatible acryloyl chitosan-grafted piperazinium polymers stabilized zinc oxide nanoparticles and their anticancer study

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 105906 - 105906

Published: Jan. 1, 2025

Language: Английский

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Flexible Electrochemical Capacitors based on ZnO-Carbon Black Composite

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104510 - 104510

Published: Feb. 1, 2025

Language: Английский

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Silver Nanocubes/Nano Mica Platelets Flexible Nanohybrid Substrates Modified by Zinc Oxide Quantum Dots with Synergistic 3D Lightning Rod Effect, and Electromagnetic and Chemical Enhancements for Highly Sensitive SERS Bacterial Biosensor

Materials Today Nano, Journal Year: 2025, Volume and Issue: unknown, P. 100601 - 100601

Published: Feb. 1, 2025

Language: Английский

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