Facile biofabrication of silver nanoparticles using Salvia officinalis leaf extract and its catalytic activity towards Congo red dye degradation

Albeladi, Shroog Shdied Royji; Malik, Maqsood Ahmad; Al-Thabaiti, Shaeel A.

doi:10.1016/j.jmrt.2020.06.074

Cited by 104 publications

(72 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of phytochemicals as bio-reducing and stabilizing/capping agents results in improved fabrication of nanoparticles with high stability and an improved monodispersed nature without the requirement for any complex process during the phytonanofabrication of nanoparticles. The presence of flavonoids, including rosmarinic acid and luteolin-7-glucoside, significantly reduces the potential for Ag-Cu-Co’s synthesizing metal nanoparticles [ 38 , 48 , 49 ]. Hence, we believe that the rosmarinic acid and luteolin-7-glucoside gallic acid have acted as bio-reducing and capping/stabilizing agents in our case [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

“…Monometallic, bimetallic and multi-metallic nanoparticles are often synthesized through chemical or physical methods [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. However, there are many benefits to using green approaches, such as flexibility, environmental friendliness, cost-effectiveness and protection [ 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ]. Three key factors to be carefully taken care of in the green synthesis method are the choice of green sources for solvent, reducing agent and stabilizing/capping agent [ 38 , 39 , 40 , 41 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Facile Bio-Fabrication of Ag-Cu-Co Trimetallic Nanoparticles and Its Fungicidal Activity against Candida auris

Kamli

Srivastava

Hajrah

et al. 2021

JoF

Self Cite

View full text Add to dashboard Cite

Candida auris is an emergent multidrug-resistant pathogen that can lead to severe bloodstream infections associated with high mortality rates, especially in hospitalized individuals suffering from serious medical problems. As Candida auris is often multidrug-resistant, there is a persistent demand for new antimycotic drugs with novel antifungal action mechanisms. Here, we reported the facile, one-pot, one-step biosynthesis of biologically active Ag-Cu-Co trimetallic nanoparticles using the aqueous extract of Salvia officinalis rich in polyphenols and flavonoids. These medicinally important phytochemicals act as a reducing agent and stabilize/capping in the nanoparticles’ fabrication process. Fourier Transform-Infrared, Scanning electron microscopy, Transmission Electron Microscopy, Energy dispersive X-Ray, X-ray powder diffraction and Thermogravimetric analysis (TGA) measurements were used to classify the as-synthesized nanoparticles. Moreover, we evaluated the antifungal mechanism of as-synthesized nanoparticles against different clinical isolates of C. auris. The minimum inhibitory concentrations and minimum fungicidal concentrations ranged from 0.39–0.78 μg/mL and 0.78–1.56 μg/mL. Cell count and viability assay further validated the fungicidal potential of Ag-Cu-Co trimetallic nanoparticles. The comprehensive analysis showed that these trimetallic nanoparticles could induce apoptosis and G2/M phase cell cycle arrest in C. auris. Furthermore, Ag-Cu-Co trimetallic nanoparticles exhibit enhanced antimicrobial properties compared to their monometallic counterparts attributed to the synergistic effect of Ag, Cu and Co present in the as-synthesized nanoparticles. Therefore, the present study suggests that the Ag-Cu-Co trimetallic nanoparticles hold the capacity to be a lead for antifungal drug development against C. auris infections.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facile Bio-Fabrication of Ag-Cu-Co Trimetallic Nanoparticles and Its Fungicidal Activity against Candida auris

Kamli

Srivastava

Hajrah

et al. 2021

JoF

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to determine the dye degradation kinetics of CR, the relationship between ln(C0/Ct)and irradiation time was plotted (as shown in Figure 11). It is found that under the catalysis of the silver/silver oxide nanocatalyst, the degradation reaction of CR basically obeys the first-order reaction kinetics 35 . Figure 11 shows a graph of ln (C0/Ct) versus time, which helps to understand the catalytic performance of biosynthetic silver nanoparticles.…”

Section: 14scanning Electron Microscopy (Sem)mentioning

confidence: 99%

“…These nano stimuli make the CR dye degradation process kinetically feasible, and reduction is complete in a very short period. A plausible decomposition mechanism for CR on the surface of bio-silver/ silver oxide nanoparticles is presented in Figure 8 35 . Figure 8 The Proposed mechanism for the silver/silver oxide nanoparticle-catalyzed reduction of CR using NaBH4 35 .…”

Section: 14scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Catalytic Activity for Dye Degradation and Characterization of Silver/Silver Oxide Nanoparticles Green Synthesized by Aqueous Leaves Extract of Phoenix Dactylifera L.

Laouini

Tedjani

2021

Preprint

View full text Add to dashboard Cite

In this study, green synthesis of silver /silver oxide nanoparticles was successfully prepared from Phoenix Dactylifera L aqueous leaves extract. The effect of different volume ratio (% v/v) (Plant extract / Precursor) on the nanoparticles silver /silver oxide nanoparticles formation, optical properties, and catalytic activity for dye degradation was studied. The obtained Ag/Ag2O nanoparticles were characterized using various techniques, such as UV-Visible, FT-IR, XRD, SEM for this purpose. The UV-Vis spectrum shows the absorption at 430 nm associated with Ag/Ag2O NPs. The optical bandgap values were found to be in the range of 3.22 to 4.47 eV for the direct bandgap and 3.73 to 5.23 eV for the indirect bandgap. The functional groups present in plant extracts were studied by FTIR. XRD confirmed the crystalline nature of Ag / Ag2O NP, and its average particle size was between 28.66-39.40 nm. SEM showed that the green synthesized silver/silver oxide nanoparticles have a spherical shape. The purpose of this study, it highlights the high catalytic activity for dye degradation of Ag/Ag2O NPs green synthesized. As a result, the use of Phoenix Dactylifera L aqueous leaves extract offers a cost-effective and eco-friendly method.

show abstract

“…Extracellular electron transfers (EETs) are mainly involved in anaerobic respiration of quinone-respiring microbial strains, which is of great geochemical and environmental significances [1][2][3][4]. EETs have many applications, including microbiological fuel cell, bio-hydrogen production, reduction and detoxification of heavy metals, anoxic denitrification, and bio-reduction of azo dyes [5][6][7][8][9]. However, this kind of instinctive function of microbes was nonspecific and low efficient, which needed to be improved by addition of exogenous redox mediators (RMs) [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Enhancement on the Microbial Extracellular Electron Transfers by Modified Lignin Materials: Application on Decolorization of Azo Dye

Chen

Cai

et al. 2021

Preprint

View full text Add to dashboard Cite

Background: Extracellular electron transfers (EETs) are mainly involved in anaerobic respiration of quinone-respiring strains, which is applicable in many fields, such as microbiological fuel cell, bio-hydrogen production, anoxic denitrification, and bio-reduction of azo dyes. However, this kind of instinctive function of microbes was nonspecific and low efficient, which needed to be improved by addition of exogenous redox mediators (RMs). In this work, vanillin, syringaldehyde and p-hydroxybenzaldehyde, as the precursors of lignin, were functionally modified to RMs in effort to accelerate the bio-reduction azo dyes.Results: The results showed that the decolorization efficiency of MO motivated by modified vanillin were increased from 20% to 95% in less than 12 h. And the modified syringaldehyde was increased to 85% in 24h. According to GC-MS, the modified products of vanillin and syringaldehyde were mainly kinds of phenols, ketones and quinones. The RMs exhibited better electrochemical performances by CV measurement and the •OH radicals were found according to EPR. Under saline condition, the strain, in the presence of RMs, still exhibited a high and stable removal efficiency to MO.Conclusions: The novel RMs of biodegradation to azo dyes were prepared from lignin monomers. The RMs based on bio-materials are environment-friendly and have a remarkable effect in biodegradation of azo dyes. This work may provide a new route for the functional utilization of lignin-resource and a theoretical guidance for efficient biodegradation of azo dye wastewater.

show abstract

Facile biofabrication of silver nanoparticles using Salvia officinalis leaf extract and its catalytic activity towards Congo red dye degradation

Cited by 104 publications

References 53 publications

Facile Bio-Fabrication of Ag-Cu-Co Trimetallic Nanoparticles and Its Fungicidal Activity against Candida auris

Facile Bio-Fabrication of Ag-Cu-Co Trimetallic Nanoparticles and Its Fungicidal Activity against Candida auris

Catalytic Activity for Dye Degradation and Characterization of Silver/Silver Oxide Nanoparticles Green Synthesized by Aqueous Leaves Extract of Phoenix Dactylifera L.

Enhancement on the Microbial Extracellular Electron Transfers by Modified Lignin Materials: Application on Decolorization of Azo Dye

Contact Info

Product

Resources

About