Synthesis of ZnO nanoparticles by two different methods &amp; comparison of their structural, antibacterial, photocatalytic and optical properties

Haque, Jahidul; Bellah, Masum; Hassan, Rakibu; Rahman, Sejuti

doi:10.1088/2632-959x/ab7a43

Cited by 121 publications

(57 citation statements)

References 32 publications

(41 reference statements)

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“…The absence of other elements also indicates a pure synthesized ZnONP, which corroborates the results of the XRD analysis. A similar nding was also reported by other workers 26,57,58 . The absence of impurities in the synthesized ZnONP is important for e cient antimicrobial activity 58 .…”

Section: Characterization Of Znonpsupporting

confidence: 91%

One-Pot Synthesis of Zinc Oxide Nanoparticle for Bromophenol Blue Adsorption and Its Antifungal Activity Against Filamentous Fungi

Akpomie¹,

Ghosh²,

Gryzenhout³

et al. 2020

Preprint

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Zinc oxide nanoparticles (ZnONP) have gained attention in recent years due to their multifunctional uses, potent adsorptive potential and effective antifungal activities. Despite these desirable characteristics, ZnONP has not been used for the adsorption of bromophenol blue (BRB) and tests as antifungal agents against certain important filamentous fungal strains have been limited. In this research, ZnONP was prepared via a facile one-pot synthetic approach and applied in the adsorption of BRB and as an antifungal agent against the filamentous fungi and plant pathogens; Alternaria alternata CGJM3078, Alternaria alternata CGJM3006 and Fusarium verticilliodes CGJM3823. The ZnONP was characterized by the UV, FTIR, XRD, TGA, BET, SEM, TEM, and EDX techniques, which showed efficient synthesis. The characteristics ZnO UV absorption band was observed at 375 nm, while the XRD showed an average ZnONP crystalline size of 47.2 nm. The SEM and TEM images showed an irregular shaped and aggregated porous structure of 65.3 nm average-sized ZnONPs. The Freundlich, pseudo-second-order, and intra-particle diffusion models showed R2 > 0.9494 and SSE < 0.7412, thus, exhibited the best fit to the isotherm and kinetics of adsorption. Adsorption thermodynamics revealed feasible, endothermic, random, and spontaneous adsorption of BRB onto the synthesized ZnONPs. The antifungal assay conducted, depicted strong antifungal activities against all three tested fungal cultures. A model was proposed on what causes this antifungal effect. This research demonstrated the potent use of ZnONP for the adsorption of BRB and as effective antifungal agents.

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Section: Characterization Of Znonpsupporting

confidence: 91%

One-Pot Synthesis of Zinc Oxide Nanoparticle for Bromophenol Blue Adsorption and Its Antifungal Activity Against Filamentous Fungi

Akpomie¹,

Ghosh²,

Gryzenhout³

et al. 2020

Preprint

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“…The sol-gel process offers the advantage of simplicity for fabricating ZnO nanostructures of various morphologies [26,[247][248][249][250][251][252]. Sol is the colloidal solution in which solid particles suspend in a liquid phase.…”

Section: Hydrolysis and Condensation Processmentioning

confidence: 99%

Recent Advances in Zinc Oxide Nanostructures with Antimicrobial Activities

Liao

Tjong

2020

IJMS

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This article reviews the recent developments in the synthesis, antibacterial activity, and visible-light photocatalytic bacterial inactivation of nano-zinc oxide. Polycrystalline wurtzite ZnO nanostructures with a hexagonal lattice having different shapes can be synthesized by means of vapor-, liquid-, and solid-phase processing techniques. Among these, ZnO hierarchical nanostructures prepared from the liquid phase route are commonly used for antimicrobial activity. In particular, plant extract-mediated biosynthesis is a single step process for preparing nano-ZnO without using surfactants and toxic chemicals. The phytochemical molecules of natural plant extracts are attractive agents for reducing and stabilizing zinc ions of zinc salt precursors to form green ZnO nanostructures. The peel extracts of certain citrus fruits like grapefruits, lemons and oranges, acting as excellent chelating agents for zinc ions. Furthermore, phytochemicals of the plant extracts capped on ZnO nanomaterials are very effective for killing various bacterial strains, leading to low minimum inhibitory concentration (MIC) values. Bioactive phytocompounds from green ZnO also inhibit hemolysis of Staphylococcus aureus infected red blood cells and inflammatory activity of mammalian immune system. In general, three mechanisms have been adopted to explain bactericidal activity of ZnO nanomaterials, including direct contact killing, reactive oxygen species (ROS) production, and released zinc ion inactivation. These toxic effects lead to the destruction of bacterial membrane, denaturation of enzyme, inhibition of cellular respiration and deoxyribonucleic acid replication, causing leakage of the cytoplasmic content and eventual cell death. Meanwhile, antimicrobial activity of doped and modified ZnO nanomaterials under visible light can be attributed to photogeneration of ROS on their surfaces. Thus particular attention is paid to the design and synthesis of visible light-activated ZnO photocatalysts with antibacterial properties

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“…Herein, via sol-gel method, ZnO nanoparticles were synthesized using a precursor (zinc acetate dehydrate), a solvent (ethanol), a medium of NaOH, and distilled water. 108 Either the environmentally benign leaf extract of Azadirachta indica 109 or the aerial part extract of Deverra tortuosa 110 was used for the synthesis of ZnO nanoparticles as well as biosynthesis method. ZnO particles from nanospheres to microrods were prepared using the hydrazine method.…”

Section: Bulletin Of the Korean Chemical Societymentioning

confidence: 99%

On‐Site Detection for Hazardous Materials in Chemical Accidents

Kim

Joo

2020

Bulletin Korean Chem Soc

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Chemical accidents, such as fire, explosion, and leakages, not only cause damage to humans but also have a harmful impact on the environment. In modern industrialization period, researchers have been attracted by the elaboration of novel detection platforms that have been widely adopted for monitoring and the early warning of the risk of hazardous chemicals including hydrogen fluoride, hydrogen chloride, nitric acid, ammonia, hydrogen peroxide, chlorine gas, formaldehyde, aromatic compounds such as benzene‐toluene‐xylene, and heavy metals. This review explores novel sensor platforms based on novel materials including plasmonic metals, transition metal oxides, and composites. Due to the unique optical, spectroscopic, electrical, and physicochemical properties of materials, the development of functional materials‐based sensors significantly augments the current outlook on reducing the risk of hazardous chemical accidents to ensure security for humans and the environment.

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Synthesis of ZnO nanoparticles by two different methods & comparison of their structural, antibacterial, photocatalytic and optical properties

Cited by 121 publications

References 32 publications

One-Pot Synthesis of Zinc Oxide Nanoparticle for Bromophenol Blue Adsorption and Its Antifungal Activity Against Filamentous Fungi

One-Pot Synthesis of Zinc Oxide Nanoparticle for Bromophenol Blue Adsorption and Its Antifungal Activity Against Filamentous Fungi

Recent Advances in Zinc Oxide Nanostructures with Antimicrobial Activities

On‐Site Detection for Hazardous Materials in Chemical Accidents

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