Green synthesis of silver nanoparticles using acacia lignin, their cytotoxicity, catalytic, metal ion sensing capability and antibacterial activity

Aadil, Keshaw Ram; Pandey, Neha; Mussatto, Solange I.; Jha, Harit

doi:10.1016/j.jece.2019.103296

Cited by 112 publications

(37 citation statements)

References 42 publications

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“…Primarily, the formation of AgNPs was confirmed by observing the colour change of AgNO 3 solution. With the addition of Cyanthillium cinereum leaf extract to the AgNO 3 solution, a steady change in colour from colourless to dark brown was observed, which was further confirmed by UV-vis spectroscopy [48]. The intensity of extremely symmetric single-band absorption with peak maxima of surface plasmon resonance (SPR) peaks for AgNP [49] synthesized at different concentration of AgNO 3 solution was analysed (Figure 1(a)) and found that a concentration of about 1 Â 10 À3 M AgNO 3 was adequate for the synthesis of AgNP [50].…”

Section: Uv-vis Spectra Analysismentioning

confidence: 56%

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

Anjana¹,

Joseph²,

Francis³

et al. 2021

Artificial Cells, Nanomedicine, and Biotechnology

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Plant-derived nanoparticles have multi-functionalities owing to their ecological origin and biocompatible nature. A novel and stable silver nanoparticle (AgNP) was reported here using Cyanthillium cinereum (C. cinereum) as a reducing as well as capping agent by rapid microwave-assisted green method. The synthesized nanoparticles revealed their crystalline and spherical nature with an average size of 19.25 ± 0.44 nm in HR-TEM analysis. The excitation of electrons from occupied d-bands to states above the Fermi level while employing photoluminescence studies of AgNP indicated their awesome optical properties. Rapid decomposition of dangerous organic dyes like methylene blue and fuchsine in the catalytic presence of AgNP was evidenced from simple UV-visible spectral analysis. In vitro antioxidant potential assessed by DPPH assay indicated an IC 50 value of 40.80 ± 0.14 lg/mL for the new AgNP. A substantial control on the growth of pathogenic bacteria such as Staphylococcus aureus and Klebsiella pneumonia can be achieved by synthesized nanoparticles as demonstrated by the well diffusion method. AgNP was also functioned as a non-enzymatic electrochemical sensor with a sharp oxidation peak with peak potentials at 0.366 V and it has a wide application as a bio sensor in neurobiology especially in the detection of neurotransmitters like dopamine with high sensitivity.

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Section: Uv-vis Spectra Analysismentioning

confidence: 56%

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

Anjana¹,

Joseph²,

Francis³

et al. 2021

Artificial Cells, Nanomedicine, and Biotechnology

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“…However, in the case of silver nanoparticles, significant reductions of up to 35–40% were observed against MCF‐7 cells at 5–50 μg/ml concentration. After 72 h of treatment, cell viability further reduces to 70% suggesting that the toxicity of AGNPs also increases which is due to the presence of small particle size (10–50 nm) and long exposure time of nanoparticles (72 h) (Aadil et al, 2019). The comparative inhibition of cancer cell proliferation (%) was calculated as:

Cell viability(\% ) = \{(Ac ‐ As) / Ac\} \times 100 .

where Ac = absorbance of the control group, As = absorbance of the sample.…”

Section: Biomedical Applicationsmentioning

confidence: 99%

A review on recent developments in the biosynthesis of silver nanoparticles and its biomedical applications

Arif

Uddin

2020

Med Devices & Sens

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Green chemistry is the significant field of research as it offers simple, cost-effective, easy, biocompatible and eco-friendly methods for the synthesis of nanomaterials. With the development of nanotechnology, the synthesis of silver nanoparticles (AgNPs) has become important areas of research due to their various applications in industrial, pharmacological and medicinal fields as they exhibited good antibacterial, antifungal, antioxidant, anti-inflammatory, antiviral, anticoagulant, thrombolytic, cytotoxic and photocatalytic properties due to their chemical stability and good biocompatibility.How to cite this article: Arif R, Uddin R. A review on recent developments in the biosynthesis of silver nanoparticles and its biomedical applications.

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“…Even if the average diameter of these smaller AgNPs was reported in Figure S3a, they were not considered to determine the average size of the AgNPrisms. -Not measured, 1 by STEM analysis, 2 by XRD, 3 by XANES, and the standard error as 3% of the measured value.…”

Section: Resultsmentioning

confidence: 99%

“…In recent decades, silver nanoparticles (AgNPs) have attracted considerable attention because of their tunable properties, allowing them to be used in various application fields such as sterilization [1,2], catalysis [3,4], electronics [5][6][7], and optics [8,9]. Indeed, AgNP surface plasmon resonance (SPR) properties strongly depend on nanoparticle size and shape (e.g., spheres, rods, cubes, bipyramids, prisms, triangles, and hexagons) [10][11][12], making them suitable for biolabeling [13] or surface-enhanced Raman spectroscopy (SERS) [14,15].…”

Section: Introductionmentioning

confidence: 99%

Tuning of Ag Nanoparticle Properties in Cellulose Nanocrystals/Ag Nanoparticle Hybrid Suspensions by H2O2 Redox Post-Treatment: The Role of the H2O2/AgNP Ratio

et al. 2020

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Hybrid nanoparticles involving 10-nm silver nanoparticles (AgNPs) nucleated on unmodified rod-like cellulose nanocrystals (CNCs) were prepared by chemical reduction. H2O2 used as a post-treatment induced a size-shape transition following a redox mechanism, passing from 10-nm spherical AgNPs to 300-nm triangular or prismatic NPs (AgNPrisms), where CNCs are the only stabilizers for AgNPs and AgNPrisms. We investigated the role of the H2O2/AgNP mass ratio (α) on AgNPs. At α values above 0.20, the large amount of H2O2 led to extensive oxidation that produced numerous nucleation points for AgNPrisms on CNCs. On the contrary, for α below 0.20, primary AgNPs are only partially oxidized, releasing a reduced amount of Ag+ ions and thus preventing the formation of AgNPrisms and reforming spherical AgNPs. While XRD and EXAFS reveal that the AgNP fcc crystal structure is unaffected by the H2O2 treatment, the XANES spectra proved that the AgNP–AgNPrism transition is always associated with an increase in the metallic Ag fraction (Ag0). In contrast, the formation of new 15-nm spherical AgNPs keeps the initial Ag0/Ag+ ratio unmodified. For the first time, we introduce a complete guide map for the fully-controlled preparation of aqueous dispersed AgNPs using CNC as a template.

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Green synthesis of silver nanoparticles using acacia lignin, their cytotoxicity, catalytic, metal ion sensing capability and antibacterial activity

Cited by 112 publications

References 42 publications

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

A review on recent developments in the biosynthesis of silver nanoparticles and its biomedical applications

Tuning of Ag Nanoparticle Properties in Cellulose Nanocrystals/Ag Nanoparticle Hybrid Suspensions by H2O2 Redox Post-Treatment: The Role of the H2O2/AgNP Ratio

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