Eco-friendly microwave-enhanced green synthesis of silver nanoparticles using Aloe vera leaf extract and their physico-chemical and antibacterial studies

Abstract Silver nanoparticles (AgNPs) were synthesized using Aloe vera leaf extract as both reducing and stabilizing agents via microwave irradiation method. The effects of the microwave exposure time and the amount of AgNO3 solution on the mean particle size and concentration of the synthesized AgNPs solution were investigated using response surface methodology. The synthesized AgNPs were characterized by transmission electron microscopy, UV-Vis spectroscopy, and dynamic light scattering. Well-dispersed and spherically fabricated AgNPs with mean particle size (46 nm) and maximum concentration (64 ppm) and zeta potential (+15.5 mV), were obtained at optimal synthesis conditions, using 9 ml of AgNO3 (1 mm) and 0.1 ml of Aloe vera extract during microwave exposure time of 360 s. The antibacterial activity of the synthesized AgNPs was tested using Escherichia coli and Staphylococcus aureus bacteria and the obtained results indicated their significant inhibitory effects against these two Gram-negative and Gram-positive bacteria.

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Microwave-Assisted Green Synthesis of Silver Nanoparticles Using Juglans regia Leaf Extract and Evaluation of Their Physico-Chemical and Antibacterial Properties

Antibiotics ◽

10.3390/antibiotics7030068 ◽

2018 ◽

Vol 7 (3) ◽

pp. 68 ◽

Cited By ~ 8

Author(s):

Mahsa Eshghi ◽

Hamideh Vaghari ◽

Yahya Najian ◽

Mohammad Najian ◽

Hoda Jafarizadeh-Malmiri ◽

...

Keyword(s):

Silver Nanoparticles ◽

Leaf Extract ◽

Juglans Regia ◽

Antibacterial Properties ◽

Infrared Analysis ◽

Ag Nps ◽

Stabilizing Agents ◽

Agno3 Solution ◽

Transmission Electron ◽

Vis Spectroscopy

Silver nanoparticles (Ag NPs) were synthesized using Juglans regia (J. regia) leaf extract, as both reducing and stabilizing agents through microwave irradiation method. The effects of a 1% (w/v) amount of leaf extract (0.1–0.9 mL) and an amount of 1 mM AgNO3 solution (15–25 mL) on the broad emission peak (λmax) and concentration of the synthesized Ag NPs solution were investigated using response surface methodology (RSM). Fourier transform infrared analysis indicated the main functional groups existing in the J. regia leaf extract. Dynamic light scattering, UV-Vis spectroscopy and transmission electron microscopy were used to characterize the synthesized Ag NPs. Fabricated Ag NPs with the mean particle size and polydispersity index and maximum concentration and zeta potential of 168 nm, 0.419, 135.16 ppm and −15.6 mV, respectively, were obtained using 0.1 mL of J. regia leaf extract and 15 mL of AgNO3. The antibacterial activity of the fabricated Ag NPs was assessed against both Gram negative (Escherichia coli) and positive (Staphylococcus aureus) bacteria and was found to possess high bactericidal effects.

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Green Synthesis, Characterization, Antioxidant, Antibacterial and Dye Degradation of Silver Nanoparticles using Combretum indicum Leaf Extract

Asian Journal of Chemistry ◽

10.14233/ajchem.2022.23498 ◽

2021 ◽

Vol 34 (1) ◽

pp. 216-222

Author(s):

Arnannit Kuyyogsuy ◽

Paweena Porrawatkul ◽

Rungnapa Pimsen ◽

Prawit Nuengmatcha ◽

Benjawan Ninwong ◽

...

Keyword(s):

Particle Size ◽

Silver Nanoparticles ◽

Leaf Extract ◽

Dye Degradation ◽

Sunlight Irradiation ◽

Particle Size Analyzer ◽

Vis Spectroscopy ◽

Edx Analyses ◽

Aqueous Leaf Extract ◽

And Staphylococcus Aureus

Silver nanoparticles were synthesized by bioreduction of silver nitrate using the aqueous leaf extract of Combretum indicum (CI-AgNPs). The synthesized CI-AgNPs exhibited a distinct absorption peak at 414 nm in UV-vis spectroscopy. Various parameters such as pH, temperature and time were optimized using spectrophotometry. The particle size of the CI-AgNPs was 48 nm as evaluated from the laser particle size analyzer. The XRD and EDX analyses confirmed the presence of silver in silver nanoparticles. Synthesized CI-AgNPs revealed significant antioxidant, antimicrobial (against Escherichia coli and Staphylococcus aureus) and photocatalytic (against methylene blue under sunlight irradiation) activities. Thus, an eco-friendly method was developed to synthesize silver nanoparticles using the C. indicum leaf extract.

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Microwave Accelerated Green Synthesis of Gold Nanoparticles Using Gum Arabic and their Physico-Chemical Properties Assessments

Zeitschrift für Physikalische Chemie ◽

10.1515/zpch-2017-1001 ◽

2018 ◽

Vol 232 (3) ◽

pp. 325-343 ◽

Cited By ~ 15

Author(s):

Maryam Eskandari-Nojehdehi ◽

Hoda Jafarizadeh-Malmiri ◽

Abbas Jafarizad

Keyword(s):

Electron Microscopy ◽

Particle Size ◽

Gold Nanoparticles ◽

Exposure Time ◽

Chemical Properties ◽

Gum Arabic ◽

Au Nps ◽

Synthesis Conditions ◽

Microwave Exposure ◽

Physico Chemical

AbstractMicrowave enhanced gold nanoparticles (Au NPs) were synthesized using gum Arabic as both reducing and stabilizing agents. Response surface methodology was applied to study effects of the Au NPs synthesized parameters, namely, microwave exposure time (90–180 s) and the amount of AgNO3solution (1–10 mL) on the mean particle size, mixture solution color and concentration of the synthesized Au NPs. The colloidal solution containing well-dispersed and spherical fabricated Au NPs with mean particle size (22 nm) and maximum concentration (159 ppm) and color (1.12 absorbance unit, a.u.), were obtained at the optimal synthesis conditions, using 8.17 mL of HAuCl4(1 mM) and 2 mL of gum Arabic solution (4% w/v) during microwave exposure time of 180 s. The physico-chemical properties of the synthesized Au NPs at obtained optimum synthesis conditions were characterized by Fourier transform-infrared spectroscopy, UV-Vis spectroscopy, dynamic light scattering, X-ray diffraction, transmission electron microscopy and field emission scanning electron microscopy.

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Green synthesis of silver nanoparticles: Characterization and its potential biomedical applications

Green Processing and Synthesis ◽

10.1515/gps-2021-0039 ◽

2021 ◽

Vol 10 (1) ◽

pp. 412-420

Author(s):

Mona S. Alwhibi ◽

Dina A. Soliman ◽

Manal A. Awad ◽

Asma B. Alangery ◽

Horiah Al Dehaish ◽

...

Keyword(s):

Silver Nanoparticles ◽

Aloe Vera ◽

Inhibition Zone ◽

Biologically Active ◽

Noble Metal Nanoparticles ◽

Biological Synthesis ◽

Ag Nps ◽

Mouse Melanoma ◽

Therapeutic Benefits ◽

Vis Spectroscopy

Abstract In recent times, research on the synthesis of noble metal nanoparticles (NPs) has developed rapidly and attracted considerable attention. The use of plant extracts is the preferred mode for the biological synthesis of NPs due to the presence of biologically active constituents. Aloe vera is a plant endowed with therapeutic benefits especially in skincare due to its unique curative properties. The present study focused on an environmental friendly and rapid method of phytosynthesis of silver nanoparticles (Ag-NPs) using A. vera gel extract as a reductant. The synthesized Ag-NPs were characterized by transmission electron microscopy (TEM), UV-Vis spectroscopy, Fourier transform infrared (FTIR), and dynamic light scattering (DLS). TEM micrographs showed spherical-shaped synthesized Ag-NPs with a diameter of 50–100 nm. The UV-Vis spectrum displayed a broad absorption peak of surface plasmon resonance (SPR) at 450 nm. The mean size and size distribution of the formed Ag-NPs were investigated using the DLS technique. Antibacterial studies revealed zones of inhibition by Ag-NPs of A. vera (9 and 7 mm) against Pseudomonas aeruginosa and Escherichia coli, respectively. Furthermore, the antifungal activity was screened, based on the diameter of the growth inhibition zone using the synthesized Ag-NPs for different fungal strains. Anticancer activity of the synthesized Ag-NPs against the mouse melanoma F10B16 cell line revealed 100% inhibition with Ag-NPs at a concentration of 100 µg mL−1. The phytosynthesized Ag-NPs demonstrated a marked antimicrobial activity and also exhibited a potent cytotoxic effect against mouse melanoma F10B16 cells. The key findings of this study indicate that synthesized Ag-NPs exhibit profound therapeutic activity and could be potentially ideal alternatives in medicinal applications.

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Optimization of Green Synthesis of Silver Nanoparticles from Leaf Extracts ofPimenta dioica(Allspice)

The Scientific World JOURNAL ◽

10.1155/2013/362890 ◽

2013 ◽

Vol 2013 ◽

pp. 1-5 ◽

Cited By ~ 5

Author(s):

Akshay Rajeev Geetha ◽

Elizabeth George ◽

Akshay Srinivasan ◽

Jameel Shaik

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Leaf Extract ◽

Synthesis Method ◽

Leaf Extracts ◽

Synthesis Of Nanoparticles ◽

Hot Air ◽

Vis Spectroscopy ◽

Pimenta Dioica ◽

First Time

Production of silver nanoparticles from the leaf extracts ofPimenta dioicais reported for the first time in this paper. Three different sets of leaves were utilized for the synthesis of nanoparticles—fresh, hot-air oven dried, and sun-dried. These nanoparticles were characterized using UV-Vis spectroscopy and AFM. The results were diverse in that different sizes were seen for different leaf conditions. Nanoparticles synthesized using sun-dried leaves (produced using a particular ratio (1 : 0.5) of the leaf extract sample and silver nitrate (1 mM), resp.) possessed the smallest sizes. We believe that further optimization of the current green-synthesis method would help in the production of monodispersed silver nanoparticles having great potential in treating several diseases.

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Sintesis Nanopartikel Perak Menggunakan Ekstrak Daun Kluwak Pangium edule Reinw Sebagai Bioreduktor dan Uji Aktivitasnya Sebagai Antioksidan

Jurnal Ilmu Alam dan Lingkungan ◽

10.20956/jal.v10i1.6557 ◽

2019 ◽

Vol 10 (1) ◽

Author(s):

Indrawati Patabang ◽

Syahruddin Kasim ◽

Paulina Taba

Keyword(s):

Antioxidant Activity ◽

Particle Size ◽

Silver Nanoparticles ◽

Leaf Extract ◽

Average Particle Size ◽

Xrd Analysis ◽

Average Particle ◽

Result Show ◽

Ic50 Values ◽

Show Result

Silver nanoparticles have been synthesized using kluwak leaf extract (Pangium edule Reinw) as bioreductor and antioxidant activity assay. The nanoparticles formed were monitored by observing UV-Vis absorption and characterized by using FTIR, PSA, XRD and SEM instruments. The result of functional group characterization with FTIR show that the functional groups OH, C = O, C-O and CH2 act as Ag+ reducing agent. The size of silver nanoparticles was determined by using Particle Size Analyzer (PSA) and the result show average particle size distribution of 93.2 nm. Morphology of AgNp were observed by Scanning Electron Microscope (SEM) and X-Ray Difraction (XRD) analysis show result of 51,78 nm. The antioxidant activity was shown by in kluwak leaf extract and silver nanoparticles with IC50 values respectively 831,33 ppm dan 1493,09 ppm.

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Ultra-sonication enhanced green synthesis of silver nanoparticles using Barleria buxifolia leaf extract and its possible application

10.21203/rs.3.rs-161063/v1 ◽

2021 ◽

Author(s):

Vanaraj sekar

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Leaf Extract ◽

Cancer Cell Line ◽

Xrd Analysis ◽

Blue Dye ◽

Multiple Use ◽

Uniform Size ◽

X Ray ◽

Vis Spectroscopy

Abstract A simple and eco-friendly method for the green synthesis of silver nanoparticles (AgNPs) by ultrasound-assisted strategy using Barleria buxifolia leaf extract as a reducing and capping agent was established in this study. The obtained AgNPs were characterized. UV-vis spectrum, Fourier transform infrared spectroscopy (FTIR), scanning and transmission electron microscopy (SEM and TEM), Energy Dispersive X-Ray Analyzer (EDX), X-ray diffraction, dynamic light scattering (DLS) analysis showed that the obtained AgNPs were mono dispersed spheres with uniform size of 80 nm. UV-vis spectroscopy, FTIR, and XRD analysis indicated that the surface of the obtained AgNPs was covered with organic molecules in plant extracts. The results of ABTS assays showed that high antioxidant activity was seen in the obtained AgNPs. Green synthesized AgNPs showed potent antibacterial and anti-biofilm activity against tested pathogens. Cytotoxicity assay showed that the obtained AgNPs were significantly cytotoxic to cancer cell line (MCF-7). In addition, the AgNPs synthesized in this paper can also photo catalytically degrade methylene blue dye under visible light. The potent bioactivity exhibited by the green synthesized silver nanoparticles leads towards the multiple use as antioxidant, antibacterial, anti-biofilm, cytotoxic as well as photo catalytic agent.

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Biosynthesis of silver nanoparticles from Aloe vera leaf extract and antifungal activity against Rhizopus sp. and Aspergillus sp.

Applied Nanoscience ◽

10.1007/s13204-014-0387-1 ◽

2014 ◽

Vol 5 (7) ◽

pp. 875-880 ◽

Cited By ~ 58

Author(s):

Shreya Medda ◽

Amita Hajra ◽

Uttiya Dey ◽

Paulomi Bose ◽

Naba Kumar Mondal

Keyword(s):

Silver Nanoparticles ◽

Antifungal Activity ◽

Leaf Extract ◽

Aloe Vera ◽

Aspergillus Sp ◽

Rhizopus Sp

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Biogenic silver nanoparticles from Trichodesma indicum aqueous leaf extract against Mythimna separata and evaluation of its larvicidal efficacy

Journal of Plant Protection Research ◽

10.1515/jppr-2017-0026 ◽

2017 ◽

Vol 57 (2) ◽

pp. 194-200 ◽

Cited By ~ 10

Author(s):

Abdul A. Buhroo ◽

Gousul Nisa ◽

Syed Asrafuzzaman ◽

Ram Prasad ◽

Razia Rasheed ◽

...

Keyword(s):

Silver Nanoparticles ◽

Leaf Extract ◽

Average Particle ◽

Particle Sizes ◽

Mythimna Separata ◽

Ag Nps ◽

Leaf Extracts ◽

Tem Analysis ◽

Vis Spectroscopy ◽

Aqueous Leaf Extract

AbstractThe present exploration is focused on the bio-fabrication of silver nanoparticles (Ag NPs) usingTrichodesma indicumaqueous leaf extract as a reducing agent. The synthesized Ag NPs were productively characterized by UV-vis spectroscopy, XRD, and TEM studies. The photosynthesis of Ag NPs was done at room temperature for 24 h and at 60°C. The green synthesis of spherical-shaped Ag NPs bio-fabricated fromT. indicumwith a face centred cubic structure showed average particle sizes of 20–50 nm, which is inconsistent with the particle size calculated by the XRD Scherer equation and TEM analysis. We further explored the larvicidal efficacy of biosynthesized Ag NPs with leaf extracts ofT. indicumagainstMythimna separata. The results showed that Ag NPs (20–50 nm) ofT. indicumpossess good larvicidal activity againstM. separatawith an LC50of 500 ppm. Thus, we can advocate that Ag NPs of 20–50 nm size extracted fromT. indicummay be considered in the pest management programme ofM. separatain future.

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The Aggregation Study and Characterization of Silver Nanoparticles

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.263.165 ◽

2017 ◽

Vol 263 ◽

pp. 165-169

Author(s):

Silvia Chowdhury ◽

Faridah Yusof ◽

Nadzril Sulaiman ◽

Mohammad Omer Faruck

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Particle Size ◽

Silver Nanoparticles ◽

Absorption Spectrum ◽

Average Particle Size ◽

Average Particle ◽

Transmission Electron ◽

Vis Spectroscopy

In this article, we have studied the process of silver nanoparticles (AgNPs) aggregation and to stop aggregation 0.3% Polyvinylpyrrolidone (PVP) was used. Aggregation study carried out via UV-vis spectroscopy and it is reported that the absorption spectrum of spherical silver nanoparticles were found a maximum peak at 420 nm wavelength. Furthermore, Transmission Electron Microscopy (TEM) were used to characterized the size and shape of AgNPs, where the average particle size is around 10 to 25 nm in diameter and the AgNPs shape is spherical. Next, Dynamic Light Scattering (DLS) were used, owing to observed size distribution and self-correlation of AgNPs.

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