Green synthesis of silver oxide nanoparticles using Panicum miliaceum grains extract for biological applications

Velsankar, K.; Parvathy, G.; Sankaranarayanan, K.; Mohandoss, Sonaimuthu; Sudhahar, S.

doi:10.1016/j.apt.2022.103645

Cited by 38 publications

(11 citation statements)

References 54 publications

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“…5 A). Our findings on RC@AgONPs are correlated with earlier research on AgONPs employing Parieteria alsinaefolia Delile , Simarouba glauca , Celastrus paniculatus , and Rhamnus virgata 21 , 41 , 42 . These findings supported the potential of AgONPs to trigger cytotoxicity.…”

Section: Resultssupporting

confidence: 89%

Biogenic synthesis, characterization, and in vitro biological investigation of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata

Ullah,

Iqbal,

Gul

et al. 2024

Sci Rep

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The current research aimed to study the green synthesis of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata (RC) aqueous extract as a potent reducing and stabilizing agent. The obtained RC-AgONPs were characterized using UV, FT-IR, XRD, DLS, SEM, and EDX to investigate the morphology, size, and elemental composition. The size of the RC-AgONPs was found to be ~ 21.66 nm and an almost uniform distribution was executed by XRD analysis. In vitro studies were performed to reveal biological potential. The AgONPs exhibited efficient DPPH free radical scavenging potential (71.3%), reducing power (63.8 ± 1.77%), and total antioxidant capacity (88.5 ± 4.8%) to estimate their antioxidative power. Antibacterial and antifungal potentials were evaluated using the disc diffusion method against various bacterial and fungal strains, and the zones of inhibition (ZOI) were determined. A brine shrimp cytotoxicity assay was conducted to measure the cytotoxicity potential (LC50: 2.26 μg/mL). In addition, biocompatibility tests were performed to evaluate the biocompatible nature of RC-AgONPs using red blood cells, HEK, and VERO cell lines (< 200 μg/mL). An alpha-amylase inhibition assay was carried out with 67.6% inhibition. Moreover, In vitro, anticancer activity was performed against Hep-2 liver cancer cell lines, and an LC50 value of 45.94 μg/mL was achieved. Overall, the present study has demonstrated that the utilization of R. capitata extract for the biosynthesis of AgONPs offers a cost-effective, eco-friendly, and forthright alternative to traditional approaches for silver nanoparticle synthesis. The RC-AgONPs obtained exhibited significant bioactive properties, positioning them as promising candidates for diverse applications in the spheres of medicine and beyond.

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Section: Resultssupporting

confidence: 89%

Biogenic synthesis, characterization, and in vitro biological investigation of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata

Ullah,

Iqbal,

Gul

et al. 2024

Sci Rep

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“…Regarding the removal of heavy metals by CuO-NPs, although the removal efficiency of chromium and nickel did not exceed 10%, the percentage was much higher in the case of lead (98.49%). Heavy metal removal via nanoparticles mainly occurs due to adsorption onto its surface (El-Dib et al 2020 ; Velsankar et al 2020a ; Velsankar et al 2022b ; Darwesh et al 2021 ). The adsorption affinity between CuO-NPs and different heavy metals present in the environment varies according to the element, and thus, the removal efficiency of different elements varies under the same conditions.…”

Section: Resultsmentioning

confidence: 99%

Nano-bioremediation of textile industry wastewater using immobilized CuO-NPs myco-synthesized by a novel Cu-resistant Fusarium oxysporum OSF18

Darwesh

Matter

2022

Environ Sci Pollut Res

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Currently, bionanotechnologies are attracting great interest due to their promising results and potential benefits on many aspects of life. In this study, the objectives was to biosynthesis CuO-NPs using cell-free extract(s) of copper-resistant fungi and use them in bioremediation of textile industry wastewater. Out of 18 copper-resistant fungal isolates, the novel fungus strain Fusarium oxysporum OSF18 was selected for this purpose. This strain showed a high efficiency in extracellular reducing copper ions to their nano-form. The myco-synthesized CuO-NPs were characterized using UV-Vis spectroscopy, HRTEM, FTIR, and XRD and were found to be spherical nanocrystals with the size range of 21–47 nm. The bio-synthesized CuO-NPs showed promising antimicrobial activity as well as high efficiency in removing heavy metals and textile dye from industrial wastewater. The myco-synthesized CuO-NPs immobilized in alginate beads exhibited superior microbial disinfection (99.995%), heavy metals removal (93, 55, and 30 % for Pb, Cr, and Ni, respectively), and dye decolorization (90%). Such results represent a promising step to produce an eco-friendly, cost-effective, and easy-to handle tool for the bioremediation of textile industry wastewater.

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“…The XRD patterns of AgNF/cotton fabric before and after 6 h of light exposure are shown in Figure S1. It can be found that after prolonged irradiation by UV light, two new small peaks were added in the XRD spectra of AgNF/cotton fabric, located at 32.34 and 54.8°, respectively, which are the signals of silver oxide. , It confirms the generation of silver oxide on the surface of AgNF/cotton fabrics under long-term cyclic photothermal conditions. Although the silver oxide is excited by light and generates electrons and holes, which can combine with H 2 O and O 2 to produce free radicals to oxidatively degrade dyes, the narrow bandwidth of the silver oxide results in the generation of electron and hole pairs that can be easily compounded, which may be the reason for the slight decrease in degradation efficiency of AgNF/Cotton fabric during recycling.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Flower-like Nanosilver Based on Bioderived Caffeic Acid for Raman Enhancement and Dye Degradation

Xing,

Sun,

Chu

et al. 2024

Langmuir

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In this study, a simple, green, and low-cost room temperature synthesis of broccoli-like silver nanoflowers (AgNF) with a particle size of about 300−500 nm was developed using plant-derived caffeic acid as a reducing agent and polyvinylpyrrolidone as a dispersant under ultrasound assistance. The flower clusters covered by small nanocrystals of 20−50 nm significantly enhance the electromagnetic field signals. AgNF was deposited on the surface of silicon wafers as a surface-enhanced Raman spectroscopy sensor for the detection of probe molecules such as rhodamine 6G (R6G) and malachite green with high sensitivity, homogeneity, and reproducibility. AgNF was deposited on cotton fabrics in the form of composites to catalyze the degradation of dye pollutants such as R6G, MG, and methyl orange in the presence of sodium borohydride. 0.1 g of AgNF/cotton fabric could assist 15 mmol/L NaBH 4 to achieve over 90% degradation of various dyes as well as a high concentration of dyes in 12 min with good reusability and recyclability. The AgNF synthesized in this work can not only monitor the type and amounts of pollutants (dyes) in wastewater but also catalyze the rapid degradation of dyes, which is expected to be valuable for industrial applications.

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Green synthesis of silver oxide nanoparticles using Panicum miliaceum grains extract for biological applications

Cited by 38 publications

References 54 publications

Biogenic synthesis, characterization, and in vitro biological investigation of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata

Biogenic synthesis, characterization, and in vitro biological investigation of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata

Nano-bioremediation of textile industry wastewater using immobilized CuO-NPs myco-synthesized by a novel Cu-resistant Fusarium oxysporum OSF18

Preparation of Flower-like Nanosilver Based on Bioderived Caffeic Acid for Raman Enhancement and Dye Degradation

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