Synthesis of silver nanoparticles and their optical properties

Das, Ratan; Nath, Siddarth S.; Chakdar, D.; Gope, Gautam; Bhattacharjee, Ramendhu

doi:10.1080/17458080903583915

Cited by 148 publications

(95 citation statements)

References 15 publications

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“…Research on advanced nanomaterials of noble metals like silver has gained a lot of interest among scientists during the past decades due to their unique properties that originate from high number of surface atoms and their versatile utilities and innovative applications in various engineering fields like catalysis (Santos et al 2012), optical (Das et al 2010) and antimicrobial activity (Soo-Hwan et al 2011;Venkatesham et al 2014;El-Nour et al 2010), etc. Synthesis method of nanoparticles plays an important role in its technological advancement as it is the primary step to tune their physical, electronic, and optical properties of the synthesized nanoparticles by varying size, shape and surface chemistry (Wiley et al 2007;Sharma et al 2009;Naik et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Plant-mediated synthesis of silver nanoparticles using parsley (Petroselinum crispum) leaf extract: spectral analysis of the particles and antibacterial study

2014

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Synthesis of nanomaterials may involve various routes including physical, chemical and biological approaches. Here, the biological green route was chosen to prepare silver nanoparticles from silver salts to avoid the requirement of costly instruments and involvement of hazardous chemicals as well. To make the process clean and green, leaf extract of parsley (Petroselinum crispum) was used to synthesize Ag nanoparticles at room temperature. The formation of Ag-nanoparticles was monitored by UV-Vis spectroscopy. The presence of silver in the sample and its crystalline nature were verified by X-ray diffraction (XRD) analysis. The size distribution profile and particle size in the suspension were manipulated from dynamic light scattering (DLS) pattern. The shape, size and morphology of the biogenic nanoparticles were studied using high resolution transmission electron microscope (TEM). Fourier transform infra-red spectroscopy was used to detect the biomolecules responsible for reduction of silver ions. These biogenic Ag-nanoparticles showed appreciable antibacterial efficacy against three bacteria-Klebsiella pneumoniae, Escherichia coli and Staphylococcus aureus.

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Section: Introductionmentioning

confidence: 99%

Plant-mediated synthesis of silver nanoparticles using parsley (Petroselinum crispum) leaf extract: spectral analysis of the particles and antibacterial study

2014

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“…, O-CH 2 stretching at 973 cm −1 and benzenoid group (Das et al 2009) at 868 cm −1 are present by default. It will be seen that the absorption spectrum of treated p-c blended fabric samples does not show much of change (Fig.…”

Section: Fourier Transform Infrared Analysismentioning

confidence: 99%

Copper nano-sol loaded woven fabrics: structure and color characterization

Kanade

Patel

2017

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Nano technology is an upcoming branch where lot of research work is being done with the intention of improving/changing properties of the materials. In this study polyester, cotton and polyester-cotton blended fabrics were coated with copper nano particles by pad-dry-cure technique. The morphology of nano-composite fabrics characterized using scanning electron microscope reveals that nanoparticles were dispersed on the fabric samples. The elemental analysis for confirming the presence of copper in the fabric samples was done using the Fourier transform infrared spectroscopy and energy dispersive X-ray spectroscopy techniques. The X-ray diffraction analysis of the fabric samples helped to unveil that incorporation of copper nano particles increased the d-spacing value in polyester fabric to a greater extent in comparison to the cotton and polyester-cotton blended fabrics. The nano treated woven fabric samples were dyed using myrobolan; a natural dye. The samples were evaluated in terms of colourimetric parameters and colour fastness. The copper nano-sol treatment was found to improve both K/S and colour fastness.

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“…The non toxic water dispersed ZnQ quantum dots with long term fluorescence stability can be synthesized by a chemical hydrolysis method encapsulated with chitoson and loaded with anticancer drug. Chitosan enhanced the stability of quantum dots for its hydrophilicity and cationic charge of chitoson [45]. NPs are being developed as delivery vehicles for therapeutic pharmaceuticals such as liposomal NPs (LNPs), encapsulated therapeutic agents for cancer therapy, pegylated form of liposomal encapsulated doxorubicin for breast cancer, layered double hydroxide (LDHs), nanoscale polymer carrier therapy for targeting tumor cells, water soluble polymers drug conjugate to increases half life with potent antitumor effect, 5-flurorouracil loaded iron/ethylcellulose NPs for active targeting of cancer cells can be used in nanomedicine [54][55][56][57][58].…”

Section: Microencapsulation Of Nanoparticlesmentioning

confidence: 99%

“…The uniform silver NPs can be obtained by the reduction of silver ions by ethanol at 800˚C to 1000˚C under atmospheric condition [45]. In this synthesis process 20 ml of aqueous solution containing silver nitrate (0.5 g of AgNO 3 ) can be treated with sodium linoleate (C 18 H 32 O 2 ) (1.5 g) in tubes under continuous agitation.…”

Section: Silver Nanoparticlesmentioning

confidence: 99%