Green synthesis of silver nanoparticles using plant extracts

Ghaffari‐Moghaddam, Mansour; Hadi‐Dabanlou, Robabeh; Khajeh, Mostafa; Rakhshanipour, Mansoureh; Shameli, Kamyar

doi:10.1007/s11814-014-0014-6

Cited by 121 publications

(65 citation statements)

References 90 publications

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“…16,17 With the continuous expansion of the AgNP market, this new method of synthesis may reduce the environmental impact concerning waste and chemical usage. While most "green" synthesis methods based on plant extracts, 18 bacterial, 19 and fungal 20 supernatants are indisputably environmentally friendly, their reproducibility is strongly dependent on the conditions required for the cultivation of these organisms. Due to many factors involved, including biological variation, the results may differ between individual reactions.…”

Section: Discussionmentioning

confidence: 99%

Synthesis of antimicrobial silver nanoparticles through a photomediated reaction in an aqueous environment

Banasiuk¹,

Frackowiak²,

Krychowiak³

et al. 2016

IJN

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A fast, economical, and reproducible method for nanoparticle synthesis has been developed in our laboratory. The reaction is performed in an aqueous environment and utilizes light emitted by commercially available 1 W light-emitting diodes (λ =420 nm) as the catalyst. This method does not require nanoparticle seeds or toxic chemicals. The irradiation process is carried out for a period of up to 10 minutes, significantly reducing the time required for synthesis as well as environmental impact. By modulating various reaction parameters silver nanoparticles were obtained, which were predominantly either spherical or cubic. The produced nanoparticles demonstrated strong antimicrobial activity toward the examined bacterial strains. Additionally, testing the effect of silver nanoparticles on the human keratinocyte cell line and human peripheral blood mononuclear cells revealed that their cytotoxicity may be limited by modulating the employed concentrations of nanoparticles.

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Section: Discussionmentioning

confidence: 99%

Synthesis of antimicrobial silver nanoparticles through a photomediated reaction in an aqueous environment

Banasiuk¹,

Frackowiak²,

Krychowiak³

et al. 2016

IJN

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Section: Silver Nano Particles (Snps)mentioning

confidence: 99%

“…The above-mentioned methods produce high purity, well-defined nanoparticles, but the reagents used in the synthesis are hazardous, energy consuming, expensive, toxic and not suitable for physiological or ecological applications. Research regarding the synthesis of metal nanoparticles was extensively covered in the past three decades, but research of nanosynthesis , based on plant extracts, bloomed only in the last ten years [7][8][9][10][11][12][13].Silver nanoparticles are finding themselves in the limelight due to their biological, chemical and physical properties that contributes to the bactericidal and fungicidal effects, catalytic activity and finds applications in nanobiotechnological research [14,15]. Doctors are beginning to use them in wound dressings as anti-microbial agents, in topically applied creams used to prevent wound infections, and even finds success in use as anticancer applications [16][17][18][19][20].…”

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confidence: 99%

A review on preparation methods of SNPs and their biomedical applications

Ut¹,

Mk²,

Gvsn³

2017

Front Nanosci Nanotech

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Researchers have identified Silver Nano Particles (SNPs) as a key area of interest because of their unique shape and size dependent biomedical properties. They have discovered and invented a variety of methods for the synthesis of SNPs such as microwave irradiation techniques, laser ablation synthesis, biological synthesis, photochemical synthesis and chemical synthesis etc. In this review paper we overview the preparation of SNPs through various synthesis methods and also their applications in the bio-medical field. The main aim of this paper is to keep up to date with the myriad ongoing synthesis methods of synthesis of NPs and also examine their applications especially in the field of medicine. Silver Nano Particles (SNPs)Silver (Ag) is a white colored, lustrous looking, physically soft, transition element metal having high thermal and electrical conductivity. It has been used by humans earlier than the recorded history due to its ornamental, medical and therapeutic benefits even before realizing that microbes are the causative agents of infections. It is used by people in many forms such as solutions, foils, coins, vessels, sutures, and in colloids such as lotions, ointments etc. It is one of the most prominent therapeutic elemental agent in medicine for surgical infections and infectious diseases. The tangible advantages of silver have a bigger weightage than the intangible risk factors [1].Nanoscience is a novel multidisciplinary subject that depends on the basic physical and chemical properties displayed by nano level objects [2,3]. Nanoparticles have been shown to display amazing electromagnetic, surface optical and chemically catalytic characteristics than the macro bulk material owing to their extremely low volume to surface area ratio [4,5]. Metal nanoparticles such as silver show different colors due to their Surface Plasmon Resonance (SPR) phenomenon. It is a group oscillatory behavior of the free electrons of the metal nanoparticles having the same frequency of the light wave interactions, resulting in resonance, causing the SPR band to form in the infrared and visible region [6]. Nanoparticles, especially the metallic ones, whose production can be done through various methods, the usual ones being physical and chemical methods. The above-mentioned methods produce high purity, well-defined nanoparticles, but the reagents used in the synthesis are hazardous, energy consuming, expensive, toxic and not suitable for physiological or ecological applications. Research regarding the synthesis of metal nanoparticles was extensively covered in the past three decades, but research of nanosynthesis , based on plant extracts, bloomed only in the last ten years [7][8][9][10][11][12][13].Silver nanoparticles are finding themselves in the limelight due to their biological, chemical and physical properties that contributes to the bactericidal and fungicidal effects, catalytic activity and finds applications in nanobiotechnological research [14,15]. Doctors are beginning to use them in wound dressings as an...

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“…Different shapes and sizes of nanoparticles are produced through UV irradiation 3 , microwave irradiation 4 , chemical reduction 5 , electron irradiation 6 , photochemical 7 and lithography methods 8 . However most of the methods involve more than one step, requirement of high energy, difficulty in purification and presence of hazardous chemicals 9 . Biogenic approaches of nanoparticle synthesis have received greater attention over physical and chemical synthesis, as it is non-toxic, non-hazardous, cost effective and eco-friendly 10,11 .…”

Section: Introductionmentioning

confidence: 99%

Phytosynthesis and Characterisation of Silver Nanoparticles Synthesised from Flower Extract of Roheda (Tecomella undulata G. Don)

Chaudhuri

Malodia

2017

Def. Life. Sc. Jl.

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Green synthesis of silver nanoparticles was carried out using Tecomella undulat flower extract with 0.1mM silver nitrate solution. Within a few minutes colour change and variation of pH value could be observed. Synthesised nanoparticles were characterised through UV-Vis spectra, particle size analysis, zeta potential measurement, X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FTIR), Scanning electron microscopy (SEM), Energy dispersive X-ray (EDX) analysis and Atomic force microscopy (AFM). The UV-Vis absorption spectrum shows an absorption band near 450 nm, which is characteristic absorption peak of silver nanoparticle. The particle size distribution result showed two peaks at 5.23 nm (20.3 per cent) and 77.82 nm (79.7 per cent). XRD characterisation showed that these are highly crystalline silver nanoparticles having average size 12.5 nm. FTIR spectrum was recorded to identify the biomolecules involved in the synthesis process, which showed absorption band stretches at 2939.52 cm-1, 2877.79 cm-1, 2362.80 cm-1, 1228.66 cm-1, 1157.29 cm-1, 1014.56 cm-1, 831.32 cm-1and 785.03 cm-1. SEM image showed that particles were spherical in nature. The presence of Ag was confirmed by major peak of Ag in EDX spectrum. 2D and 3D images of silver nanoparticles were obtained by AFM and biogenic nanoparticles were measured in the size range between 20 nm - 70 nm. Various types of spectroscopic and microscopic characterisation indicated that these are stable silver nanoparticles synthesised from flower extract of Tecomella undulata.

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Green synthesis of silver nanoparticles using plant extracts

Cited by 121 publications

References 90 publications

Synthesis of antimicrobial silver nanoparticles through a photomediated reaction in an aqueous environment

Synthesis of antimicrobial silver nanoparticles through a photomediated reaction in an aqueous environment

A review on preparation methods of SNPs and their biomedical applications

Phytosynthesis and Characterisation of Silver Nanoparticles Synthesised from Flower Extract of Roheda (Tecomella undulata G. Don)

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