Synthesis of Silver Nanoparticles Using Orange Peel Extract Prepared by Plasmochemical Extraction Method and Degradation of Methylene Blue under Solar Irradiation

In pursuit of greener nanoscale research, the utilization of the reductive potency of a common byproduct of food-processing industry, i.e., orange peel, has been researched to prepare “green” silver nanoparticles (AgNPs). The synthesized AgNPs were characterized by UV-Vis spectroscopy, dynamic light scattering, and scanning electron microscopy. The results confirmed that silver nanoparticles were formed at the investigated concentrations of Ag+ (0.25–6.0 mmol/L) during 5–10 minutes, at ratio AgNO3 : extract (mL) = 1 : 1, and at 75°C. From the SEM images, the silver nanoparticles are found to be almost spherical. Powder XRD results reveal that Ag nanoparticles had a face-centered cubic crystal structure. The zeta potential value for AgNPs obtained was −21.7 mV, indicating the moderate stability of synthesized nanoparticles. The effect of pH on nanoparticle synthesis has been determined by adjusting the pH of the reaction mixtures. The catalytic effectiveness of the prepared green catalyst, AgNPs, has also been investigated in catalytic degradation of methylene blue (MB) dye. The catalytic degradation reaction under solar irradiation was completed (99%) within 35 min, signifying excellent catalytic properties of silver nanoparticles in the reduction of MB.

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Green Synthesis of Silver Nanoparticles in the Presence of Polysaccharide: Optimization and Characterization

Journal of Nanomaterials ◽

10.1155/2020/3051308 ◽

2020 ◽

Vol 2020 ◽

pp. 1-10 ◽

Cited By ~ 10

Author(s):

Margarita I. Skiba ◽

Victoria I. Vorobyova ◽

Alexander Pivovarov ◽

Natalya P. Makarshenko

Keyword(s):

Silver Nanoparticles ◽

Sodium Alginate ◽

Xrd Analysis ◽

Face Centered Cubic ◽

Colloidal Solutions ◽

Ag Nps ◽

Sem Images ◽

Spherical Powder ◽

Stabilizing Agent ◽

Vis Spectroscopy

The process of obtaining aqueous solutions of silver nanoparticles with the use of a low-temperature nonequilibrium contact plasma and stabilizing agent—polysaccharide (sodium alginate)—has been examined. The synthesized Ag NPs were characterized by using UV-Vis spectroscopy, dynamic light scattering (DLS), scanning electron microscope (SEM), and XRD analysis. The effect of concentration of Ag+, sodium alginate, duration of processing by plasma discharge, and pH of liquid on the production of silver nanoparticles has been studied. The results demonstrated that synthesis provides the formation of silver nanoparticles for investigated concentrations of Ag+ (0.3-3.0 mmol/l) and 5.0 g/l Na-Alg (pH=7–10) within 1–5 minutes. From the SEM images, the silver nanoparticles are found to be almost spherical. Powder XRD results reveal that Ag nanoparticles have a face-centered cubic crystal structure. Zeta potential of plasma-chemically obtained colloidal solutions at various concentrations of Ag+ ions and stabilizing agent varies from −32.8 to −39.3 mV, indicating the moderate stability of synthesized nanoparticles.

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Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue

Catalysts ◽

10.3390/catal11111377 ◽

2021 ◽

Vol 11 (11) ◽

pp. 1377

Author(s):

Chandra Kishore Somasundaram ◽

Raji Atchudan ◽

Thomas Nesakumar Jebakumar Immanuel Edison ◽

Suguna Perumal ◽

Rajangam Vinodh ◽

...

Keyword(s):

Electron Microscopy ◽

Methylene Blue ◽

Silver Nanoparticles ◽

Marine Algae ◽

Dye Degradation ◽

Catalytic Degradation ◽

Attenuated Total Reflection ◽

Face Centered Cubic ◽

X Ray ◽

Vis Spectroscopy

Herein, Sargassum coreanum (marine algae)-mediated silver nanoparticles (AgNPs) were successfully synthesized by a simple reduction method. The synthesized AgNPs were characterized using ultraviolet-visible spectroscopy, attenuated total reflection Fourier transformed infrared spectroscopy, X-ray diffractometry, field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray (EDX) spectroscopy, and high-resolution transmission electron microscopy (HR-TEM) analysis. The acquired colloidal AgNPs were strongly absorbed around 420 nm and displayed brown color under visible light. The XRD pattern of AgNPs exposed their face-centered cubic geometry along with crystalline nature. The HRTEM images of synthesized AgNPs confirmed the mean particle size of 19 nm with a distorted spherical shape, and the calculated interlayer distance (d-spacing value) was about 0.24 nm. Further, the catalytic degradation of methylene blue using sodium borohydride and AgNPs was monitored using UV–vis spectroscopy. The result revealed that AgNPs performed as a superior catalyst, which completely degraded MB in 20 min. The rate constant for MB degradation was calculated to be 0.106 min−1, demonstrating that the marine algae-mediated AgNPs had outstanding catalytic activity. This approach is easy and environmentally benign, which can be applied for environmental-based applications such as dye degradation and pollutant detoxification.

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Green Synthesis of Silver Nanoparticles using Medicinal Plants BerberisAsiatica and Cassia Fistula and Evaluation of Antioxidant and Anti-bacterial Activities

Nepal Journal of Science and Technology ◽

10.3126/njst.v20i1.39384 ◽

2021 ◽

Vol 19 (2) ◽

pp. 25-32

Author(s):

Deegendra Khadka ◽

Rachana Regmi ◽

Mitesh Shrestha ◽

Megha Raj Banjara

Keyword(s):

Silver Nanoparticles ◽

Nanoparticle Synthesis ◽

Cost Effective ◽

Face Centered Cubic ◽

Related Field ◽

Cost Effective Method ◽

Vis Spectroscopy ◽

Health Related ◽

Face Centered ◽

Biosynthesized Agnps

The application of silver nanoparticles in various sectors including health related field is remarkably profound. Nowadays, the research of synthesizing metal nanoparticles (MNPs) using plant extracts is fascinating field as it offers the eco-friendly and cost-effective method for nanoparticle synthesis. In this study, we synthesized silver nanoparticles (AgNPs) using methanolic extract of B.asiatica and C. fistula regarding their ethnomedical importance. The synthesized AgNPs were characterized by UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometer (XRD). UV-vis spectroscopy exhibited the characteristic Surface Plasmon Peak of silver nanoparticle~420 nm.FTIR data were measured to get a preliminary idea on the functional groups responsible for the stabilization of AgNPs. XRD data confirmed the natural crystal structure with a face centered cubic of AgNPs. The antibacterial activity of biosynthesized AgNPs was assessed by testing promptly available gram-positive Staphylococcus aureus and gram-negative Escherichia coli bacterial strain and antioxidant activity was calculated by DPPH assay. The overall outcomes of the studies concluded that the application of the biogenic synthesis of AgNPs of B. asiaticaas an antioxidant and antibacterial agent is more potent showing IC50 value 65.1±1.30 μg/mL and the highest zone of inhibition 15 mm in diameter against S. aureus.

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Biosynthesis of Silver Nanoparticles Using Orange Peel Extract for Application in Catalytic Degradation of Methylene Blue Dye

Environment and Natural Resources Journal ◽

10.32526/ennrj/19/202100088 ◽

2021 ◽

Vol 19 (6) ◽

pp. 1-13

Author(s):

Cathleen Simatupang ◽

◽

Vinod K Jindal ◽

Ranjna Jindal ◽

◽

...

Keyword(s):

Methylene Blue ◽

Silver Nanoparticles ◽

Industrial Effluent ◽

Orange Peel ◽

Catalytic Degradation ◽

Blue Dye ◽

Process Conditions ◽

Optimum Conditions ◽

Orange Peel Extract ◽

Peel Extract

Interest in the biosynthesis of silver nanoparticles (AgNPs) has been steadily increasing primarily due to their numerous applications in various fields, low-cost, use of non-toxic environmentally-friendly materials and easy implementation. This study focused on the biosynthesis of AgNPs using orange peel extract (OPE), optimization of process conditions, and application in catalytic degradation of methylene blue (MB) dye used in the textile industry. A central composite design in response surface methodology resulted in optimum conditions of 0.0075 g dry peel/mL for OPE concentration, pH of 11 and 1.5 mM silver nitrate concentration. The optimum conditions for the response variables corresponded to the peak absorbance of 0.79 and SPR wavelength of 403.8 nm in UV-vis spectra, and minimum particle size of 12.9 nm. In addition, peak absorbance and SPR wavelength appeared to be related to the size of the AgNPs. A full-factorial design for the catalytic degradation of MB dye by the biosynthesized AgNPs for 1 h indicated the maximum influence of AgNPs compared to the concentrations of MB dye and NaBH4 in decreasing order. The MB dye was reduced rapidly with NaBH4 in the presence of AgNPs due to their catalytic action. The findings of the study show the potential of OPE for the biosynthesis of AgNPs with excellent catalytic activity for the treatment of MB dye in industrial effluent.

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Catalytic degradation of methylene blue using silver nanoparticles synthesized by honey

Saudi Journal of Biological Sciences ◽

10.1016/j.sjbs.2021.01.003 ◽

2021 ◽

Author(s):

Mayasar I. Al-Zaban ◽

Mohamed A. Mahmoud ◽

Maha A. AlHarbi

Keyword(s):

Methylene Blue ◽

Silver Nanoparticles ◽

Catalytic Degradation

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Green Synthesis and Characterization of Pullulan Mediated Silver Nanoparticles through Ultraviolet Irradiation

Materials ◽

10.3390/ma12152382 ◽

2019 ◽

Vol 12 (15) ◽

pp. 2382 ◽

Cited By ~ 7

Author(s):

Muhammad Jamshed Khan ◽

Suriya Kumari ◽

Kamyar Shameli ◽

Jinap Selamat ◽

Awis Qurni Sazili

Keyword(s):

Silver Nanoparticles ◽

Uv Irradiation ◽

Irradiation Time ◽

Edible Films ◽

Crystallographic Structure ◽

Face Centered Cubic ◽

Selected Area Electron Diffraction ◽

Vis Spectroscopy ◽

Face Centered ◽

Average Lattice

Nanoparticles (NPs) are, frequently, being utilized in multi-dimensional enterprises. Silver nanoparticles (AgNPs) have attracted researchers in the last decade due to their exceptional efficacy at very low volume and stability at higher temperatures. Due to certain limitations of the chemical method of synthesis, AgNPs can be obtained by physical methods including sun rays, microwaves and ultraviolet (UV) radiation. In the current study, the synthesis of pullulan mediated silver nanoparticles (P-AgNPs) was achieved through ultraviolet (UV) irradiation, with a wavelength of 365 nm, for 96 h. P-AgNPs were formed after 24 h of UV-irradiation time and expressed spectra maxima as 415 nm, after 96 h, in UV-vis spectroscopy. The crystallographic structure was “face centered cubic (fcc)” as confirmed by powder X-ray diffraction (PXRD). Furthermore, high resolution transmission electron microscopy (HRTEM) proved that P-AgNPs were covered with a thin layer of pullulan, with a mean crystalline size of 6.02 ± 2.37. The average lattice fringe spacing of nanoparticles was confirmed as 0.235 nm with quasi-spherical characteristics, by selected area electron diffraction (SAED) analysis. These green synthesized P-AgNPs can be utilized efficiently, as an active food and meat preservative, when incorporated into the edible films.

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Caulerpa racemosa: a marine green alga for eco-friendly synthesis of silver nanoparticles and its catalytic degradation of methylene blue

Bioprocess and Biosystems Engineering ◽

10.1007/s00449-016-1616-7 ◽

2016 ◽

Vol 39 (9) ◽

pp. 1401-1408 ◽

Cited By ~ 46

Author(s):

Thomas Nesakumar Jebakumar Immanuel Edison ◽

Raji Atchudan ◽

Chennappan Kamal ◽

Yong Rok Lee

Keyword(s):

Methylene Blue ◽

Silver Nanoparticles ◽

Green Alga ◽

Catalytic Degradation ◽

Caulerpa Racemosa ◽

Marine Green Alga

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Green Synthesis and Catalytic Activity of Silver Nanoparticles Based on Piper chaba Stem Extracts

Nanomaterials ◽

10.3390/nano10091777 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1777 ◽

Cited By ~ 2

Author(s):

Md. Mahiuddin ◽

Prianka Saha ◽

Bungo Ochiai

Keyword(s):

Electron Microscopy ◽

Silver Nanoparticles ◽

Green Synthesis ◽

Ftir Spectroscopy ◽

Visual Observation ◽

Face Centered Cubic ◽

X Ray ◽

Vis Spectroscopy ◽

Face Centered ◽

Average Size

A green synthesis of silver nanoparticles (AgNPs) was conducted using the stem extract of Piper chaba, which is a plant abundantly growing in South and Southeast Asia. The synthesis was carried out at different reaction conditions, i.e., reaction temperature, concentrations of the extract and silver nitrate, reaction time, and pH. The synthesized AgNPs were characterized by visual observation, ultraviolet–visible (UV-vis) spectroscopy, dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), energy dispersive x-ray (EDX), and Fourier transform infrared (FTIR) spectroscopy. The characterization results revealed that AgNPs were uniformly dispersed and exhibited a moderate size distribution. They were mostly spherical crystals with face-centered cubic structures and an average size of 19 nm. The FTIR spectroscopy and DLS analysis indicated that the phytochemicals capping the surface of AgNPs stabilize the dispersion through anionic repulsion. The synthesized AgNPs effectively catalyzed the reduction of 4-nitrophenol (4-NP) and degradation of methylene blue (MB) in the presence of sodium borohydride.

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Preparation, Characterization of Silver-Nanoparticles from Seed Coat Exudates of Celastrus paniculatus Willd. and Their Bactericidal and Biofilm Inhibition Effects

International Journal of Pharmaceutical Sciences and Drug Research ◽

10.25004/ijpsdr.2019.110503 ◽

2019 ◽

Vol 11 (05) ◽

Author(s):

Anil Kumar Moola1 ◽

Sundararajan Balasubramani ◽

Ranjitha Kumari Bollipo Diana1 ◽

Chari Nithya

Keyword(s):

Silver Nanoparticles ◽

Seed Coat ◽

Skin Diseases ◽

Screening Method ◽

Bioactive Molecules ◽

Metallic State ◽

Face Centered Cubic ◽

Biofilm Inhibition ◽

Vis Spectroscopy ◽

Celastrus Paniculatus

We are reporting a novel approach for preparing silver nanoparticles with seed coat exudates of Celastrus paniculatus Willd, a medicinal plant traditionally used for the treatment of skin diseases, fever, leprosy and neurological disorders. HPTLC study revealed that aqueous, soluble seed coat exudates contain phenolics, alakaloids and flavonoids. The formation, crystalline nature and morphology of the nanoparticles were identified by UV–Vis spectroscopy, X-ray Diffraction (XRD) analysis, Transmission Electron Microscopy (TEM) and selected-area electron diffraction (SAED). Functional group stretching of aqueous soluble extracts was identified by using FTIR. Results revealed that nanosilver particles are spherical, range in size from 10 to 82 nm and crystalize in face-centered cubic structures. Surface-enhanced Raman spectra analysis showed that AgNP are capped with bioactive molecules from exudates and that they may act as precursors of the reduction of silver nitrate from the metallic state (Ag+) to the atomic state (Ag0). We also examined the minimal inhibitory concentration for bacteria Escherichia coli and Bacillus subtilis using a resazurin color assay. Nanosilver strongly inhibited the bacterial growth, leading to MIC values of 40μg/ml and 60μg/ml for the bacteria, respectively. The colony screening method and inhibition kinetics of biofilm formation in the Klebsiella pneumoniae strain were also studied using the tube method and a quantitative microplate assay. SEM analysis and quantification of the EPS revealed a fivefold decrease in concentration in treated compared to untreated. The inhibition response was duly reflected in SEM images.

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