Green Synthesis of Zinc Oxide Nanoparticles

Yuvakkumar, R.; Suresh, J.; Hong, Sun Ig

doi:10.4028/www.scientific.net/amr.952.137

Cited by 23 publications

(10 citation statements)

References 19 publications

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“…Green synthesis of ZNPs has been carried out by different plant extracts such as Cassia fistula, Trifolium pratenese, Ocimum basilicum and so on (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24).…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of zinc oxide nanoparticles: a comparison

Fakhari

Jamzad

Fard

2019

Green Chemistry Letters and Reviews

457

147

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Green synthesis of nanoparticles by biological systems especially plant extracts has become an emerging field in nanotechnology. In this study, zinc oxide nanoparticles were synthesized using Laurus nobilis L. leaves aqueous extract and two different zinc salts (zinc acetate and zinc nitrate) as precursors. The synthesized nanoparticles were characterized by Ultraviolet-Visible spectroscopy (UV-Vis), Fourier Transform Infrared Spectroscopy (FT-IR), X-Ray Diffraction analysis (XRD), Energy-Dispersive X-ray analysis (EDX) and Scanning Electron Microscopy (SEM). UV-Vis spectra showed typical absorption peaks in around 350 nm due to their large excitation binding energy at room temperature. Chemical bond formations of zinc oxide were confirmed by FT-IR analyses. XRD results revealed the formation of hexagonal wurtzite structure, and SEM analyses showed spherical shape with the average size (21.49, 25.26) nm for the synthesized nanoparticles by zinc acetate and zinc nitrate respectively. EDX analyses confirmed high purity for the synthesized nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Green synthesis of zinc oxide nanoparticles: a comparison

Fakhari

Jamzad

Fard

2019

Green Chemistry Letters and Reviews

457

147

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“…Various biological metabolic pathways have been found to include zinc homeostasis, such as enzymatic activity, DNA transcription, protein synthesis and vascularization [ 44 ]. Zinc oxide (ZnO) NPs have been widely acknowledged as biocompatible candidates for desirable applications in tissue repair, antibacterial, anti-inflammatory, biomedical imaging and nanocarrier development [ 45 , 46 ]. Nonetheless, the performance of ZnO was significantly restrained owing to its crystalline stability, leading to a lower level of active Zn 2+ .…”

Section: Resultsmentioning

confidence: 99%

Immune-regulating strategy against rheumatoid arthritis by inducing tolerogenic dendritic cells with modified zinc peroxide nanoparticles

et al. 2022

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In hypoxic dendritic cells (DCs), a low level of Zn2+ can induce the activation of immunogenic DCs (igDCs), thereby triggering an active T-cell response to propel the immune progression of rheumatoid arthritis (RA). This finding indicates the crucial roles of zinc and oxygen homeostasis in DCs during the pathogenesis of RA. However, very few studies have focused on the modulation of zinc and oxygen homeostasis in DCs during RA treatment. Proposed herein is a DC-targeting immune-regulating strategy to induce igDCs into tolerogenic DCs (tDCs) and inhibit subsequent T-cell activation, referred to as ZnO2/Catalase@liposome-Mannose nanoparticles (ZnCM NPs). ZnCM NPs displayed targeted intracellular delivery of Zn2+ and O2 towards igDCs in a pH-responsive manner. After inactivating OTUB1 deubiquitination, the ZnCM NPs promoted CCL5 degradation via NF-κB signalling, thereby inducing the igDC-tDC transition to further inhibit CD4+ T-cell homeostasis. In collagen-induced arthritis (CIA) mice, this nanoimmunoplatform showed significant accumulation in the spleen, where immature DCs (imDCs) differentiated into igDCs. Splenic tDCs were induced to alleviate ankle swelling, improve walking posture and safely inhibit ankle/spleen inflammation. Our work pioneers the combination of DC-targeting nanoplatforms with RA treatments and highlights the significance of zinc and oxygen homeostasis for the immunoregulation of RA by inducing tDCs with modified ZnO2 NPs, which provides novel insight into ion homeostasis regulation for the treatment of immune diseases with a larger variety of distinct metal or nonmetal ions. Graphical Abstract

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“…After discarding suspended zinc oxide nanoparticles were dried in watch glass. Yellow colored particles were collected for characterization [7] (Figures 4 & 5).…”

Section: Green Synthesis Of Zno Npsmentioning

confidence: 99%

Untitled

2018

ANOAJ

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Green synthesis for nanoparticles using microorganisms, enzymes, and plants leaf or plant extracts have been indicated as possible ecofriendly preferences to chemical and physical methods. In this paper, we report the synthesis of zinc oxide particles by green method. Highly stable and hexagonal zinc oxide nanoparticles were produced by using zinc nitrate and green tea leaf extract. Structural, morphological and optical properties of the synthesized nanoparticles have been characterized by using UV-Vis spectrophotometer, FTIR, SEM, and XRD analysis. The synthesis of nanoparticles of zinc oxide was observed by the color changing of the chemical solution. Powder X-ray diffraction and SEM analysis revealed the synthesis of both Zn and ZnO nanoparticles with average particle size of 60nm. Shape of zinc oxide nanoparticles was hexagonal with the range 80-120nm. UV spectra confirmed the presence of zinc oxide nanoparticles. FTIR showed the peaks of zinc oxide nanoparticles as well as the presence of other compounds. Melachite green dye has been removed by using zinc oxide nanoparticles prepared from green tea leaf extract. The green color of the dye was removed up to 70% with the use of reducing agent sodium borohydrate. Removal of melachite green dye was performed. Other applications of zinc oxide nanoparticles in the medicine, pharma, biotechnology and industries were discussed.

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Green Synthesis of Zinc Oxide Nanoparticles

Cited by 23 publications

References 19 publications

Green synthesis of zinc oxide nanoparticles: a comparison

Green synthesis of zinc oxide nanoparticles: a comparison

Immune-regulating strategy against rheumatoid arthritis by inducing tolerogenic dendritic cells with modified zinc peroxide nanoparticles

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