A novel method to prepare antibacterial ZnO nanoflowers

Rahmah, Muntadher I.; Qasim, Haytham Bashar

doi:10.1007/s00339-022-06161-0

Cited by 8 publications

(4 citation statements)

References 50 publications

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“…The extensive band observed at approximately 2θ = 25° within the blank Nafion film is attributed to the amorphous nature of Nafion . Upon depositing a ZnO nanomembrane (plot: ZnO-Nafion film), the XRD pattern shows sharp diffraction peaks, which correspond to polycrystalline wurtzite ZnO . Subsequently, after Cu-BDC is assembled, the diffraction peaks (plot: Cu-BDC@Nafion film) align with those of Cu-BDC reported previously in literature .…”

Section: Results and Discussionsupporting

confidence: 82%

Dense and Uniform Integration of Cu-BDC Particles on a Nafion Film for a High-Performance Hydrogen-Producing Device

Xiao,

Wang,

et al. 2024

ACS Appl. Energy Mater.

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The incorporation of metal–organic frameworks onto conductive substrates demonstrates considerable potential in applications related to the hydrogen evolution reaction. In this work, we present a streamlined synthesis approach involving atomic layer deposition pretreatment to facilitate the controlled growth of Cu-BDC particles on a conductive Nafion film. This methodology preserves a substantial loading of Cu-BDC with a hierarchically porous structure, accompanied by a notable surface area of 547 m2 g–1. The composite is subsequently utilized as an electrocatalyst for hydrogen generation in an alkane electrolyte. The structural advances in the composite result in a superior electrochemical hydrogen production efficiency with a low overpotential of 84 mV and a low Tafel slope of 58 mV dec–1 in 1.0 M NaOH. Notably, the composite showed good cycling performance during the 18 h test with 2000 cycles. This research introduces a design of a catalyst electrode with promising implications for the hydrogen production industry.

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Section: Results and Discussionsupporting

confidence: 82%

Dense and Uniform Integration of Cu-BDC Particles on a Nafion Film for a High-Performance Hydrogen-Producing Device

Xiao,

Wang,

et al. 2024

ACS Appl. Energy Mater.

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Section: Organic-inorganic Hybrid Nanoflowersmentioning

confidence: 99%

“…Moreover, the flower-like structure offers a larger contact area for biomolecules to bind, making nanoflowers particularly suitable for applications in biosensors and bioimaging. Based on differences in composition, nanoflowers can be classified into several types, including inorganic nanoflowers [27][28][29][30], organic nanoflowers [31][32][33], and hybrid nanoflowers (consisting of both organic and inorganic components) [28]. In 2012, Ge et al [34] first discovered the formation of organic-inorganic hybrid nanoflowers by co-incubating proteins, copper ions, and phosphates.…”

Section: Organic-inorganic Hybrid Nanoflowersmentioning

confidence: 99%

Recent Advances in the Strategies of Simultaneous Enzyme Immobilization Accompanied by Nanocarrier Synthesis

Hao,

Liu,

Chu

2024

Applied Sciences

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In recent years, with advancements in nanotechnology and materials science, new enzyme immobilization strategies based on nanomaterials have continuously emerged. These strategies have shown significant effects on enhancing enzyme catalytic performance and stability due to their high surface area, good chemical stability, and ease of enzyme binding, demonstrating tremendous potential for industrial applications. Those methods that can rapidly synthesize nanocarriers under mild conditions allow for the one-step synthesis of nanocarriers and enzyme complexes, thereby exhibiting advantages such as simplicity of process, minimal enzyme damage, short processing times, and environmental friendliness. This paper provides an overview of simultaneous enzyme immobilization strategies accompanied by nanocarrier synthesis, including organic–inorganic hybrid nano-flowers (HNFs), metal–organic frameworks (MOFs), and conductive polymers (CPs). It covers their preparation principles, post-immobilization performance, applications, and existing challenges.

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“…PVP-ZnO NPs exhibit antibacterial activity primarily due to the presence of oxygen vacancies influenced by Zn 2+ ions. These vacancies generate reactive oxygen species (ROS) like hydrogen peroxide (H 2 O 2 ), O 2− , and OH, which can cause DNA damage and apoptosis 38 , 39 . The degree of contact between the nanomaterial and the bacteria cell membrane determines the shape-based antibacterial action.…”

Section: Antibacterial Activitymentioning

confidence: 99%

Light-absorption-driven photocatalysis and antimicrobial potential of PVP-capped zinc oxide nanoparticles

Singh,

Nancy,

Bhattu

et al. 2023

Sci Rep

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Toxic dyes in water bodies and bacterial pathogens pose serious global challenges to human health and the environment. Zinc oxide nanoparticles (ZnO NPs) demonstrate remarkable photocatalytic and antibacterial potency against reactive dyes and bacterial strains. In this work, PVP-ZnO NPs have been prepared via the co-precipitation method using polyvinylpyrrolidone (PVP) as a surfactant. The NPs’ microstructure and morphology were studied using X-ray diffraction (XRD), having a size of 22.13 nm. High-resolution transmission electron microscope (HR-TEM) and field emission scanning electron microscopy (FESEM) analysis showed spherical-shaped PVP-ZnO NPs with sizer ranging from 20 to 30 nm. Fourier Transform Infrared Spectroscopy (FT-IR) confirmed the hybrid nature of the NPs, and UV–Vis spectroscopy showed an absorption peak at 367 nm. The PVP-ZnO NPs exhibited high photocatalytic activity, achieving 88% and nearly 95% degradation of reactive red-141 azo dye with 10 mg and 20 mg catalyst dosages, respectively. The antibacterial properties of the NPs were demonstrated against Escherichia coli and Bacillus subtilis, with inhibition zones of 24 mm and 20 mm, respectively. These findings suggest that PVP-ZnO NPs can be effectively used for water treatment, targeting both dye and pathogenic contaminants.

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A novel method to prepare antibacterial ZnO nanoflowers

Cited by 8 publications

References 50 publications

Dense and Uniform Integration of Cu-BDC Particles on a Nafion Film for a High-Performance Hydrogen-Producing Device

Dense and Uniform Integration of Cu-BDC Particles on a Nafion Film for a High-Performance Hydrogen-Producing Device

Recent Advances in the Strategies of Simultaneous Enzyme Immobilization Accompanied by Nanocarrier Synthesis

Light-absorption-driven photocatalysis and antimicrobial potential of PVP-capped zinc oxide nanoparticles

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