Spherical nanosilver: Bio-inspired green synthesis, characterizations, and catalytic applications

Jha, Minakshi; Shimpi, Navinchandra G.

doi:10.1016/j.nanoso.2018.07.004

Cited by 40 publications

(7 citation statements)

References 74 publications

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“…AgNPs represent the most extensively explored contemporary material, despite; the imminent adverse effects of nano-silver formulations that constrain their application in nano-medicine [23].…”

Section: Surface Functionalization Of Agnpsmentioning

confidence: 99%

Emerging trends in clinical implications of bio-conjugated silver nanoparticles in drug delivery

Prasher

Sharma

Mudila

et al. 2020

Colloid and Interface Science Communications

110

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From nanopharmaceutics to renewable energy, silver nanoparticles (AgNPs) present innumerable applications in the contemporary era. However, the associated toxicity to the biosystems limits their application. Effective utilization of AgNPs, therefore, requires their surface conjugation with biologically benevolent moieties that enhance the bio-acceptability of silver-based nanosystems, and supplementary functionalities for further extension of their unique applications. The clinical importance of AgNPs was established long ago, but their clinical utilization has been explored only recently with the phenomenon of bio-conjugation. The biomolecule-conjugated AgNPs present operable solutions for tedious clinical complications of the present era, such as multidrug resistance, designing of pharmaceuticals with improved bioavailability, superior drug delivery vehicles and in situ bio imaging of important metabolites that utilize the biomolecule-anchored surface engineered AgNPs. This review epigrammatically discusses some interesting clinical applications of surface conjugated AgNPs with biomolecules such as peptides, nucleic acids, amino acids and antibodies in the current nanopharmaceutical paradigm.

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Section: Surface Functionalization Of Agnpsmentioning

confidence: 99%

Emerging trends in clinical implications of bio-conjugated silver nanoparticles in drug delivery

Prasher

Sharma

Mudila

et al. 2020

Colloid and Interface Science Communications

110

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“…ZnO semiconductor with direct bandgap (E g = 3.37Ev) is a highly explored n-type semiconductor owing to their high electron-hole binding energy (60 meV) [25], high thermo-mechanical stability, and useful piezoelectric and optoelectric devices. The use of ZnO nanomaterials in photocatalysis has gained a lot of interest compared to commonly used TiO2 nanomaterials due to their exceptional catalytic activity and quantum performance [26][27][28][29]. However, ZnO NPs can be synthesized by physicochemical methods efficiently.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO nanoparticles using peels of Passiflora foetida and study of its activity as an efficient catalyst for the degradation of hazardous organic dye

2021

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Creating a sustainable and effective approach to handling organic contaminants from industrial waste is an ongoing problem. In the present study, ZnO nanoparticles (ZnO NPs) were synthesized under a controlled ultrasound cavitation technique using the extract of Passiflora foetida fruit peels, which act as a reducing (i.e., reduction of metal salt) and stabilizing agent. The formation of monodispersed and hexagonal morphology (average size approximately 58 nm with BET surface area 30.83m2/g). The synthesized ZnO NPs were characterized by a various technique such as UV–visible spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared (FTIR), Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), Transmission electron microscopy (TEM), Thermogravimetric analysis (TGA) and Dynamic light scattering (DLS). Further, the XRD pattern confirmed the hexagonal wurtzite structure of synthesized ZnONPs. The ZnO NPs exhibit excellent degradation efficiency towards organic pollutant dyes, i.e., Methylene blue (MB) (93.25% removal) and Rhodamine B (91.06% removal) in 70 min, under natural sunlight with apparent rate constant 0.0337 min−1 (R2 = 0.9749) and 0.0347 min−1 (R2 = 0.9026) respectively.Zeta potential study shows the presence of a negative charge on the surface of ZnO NPs. The use of green synthesized ZnO NPs is a good choice for wastewater treatment, given their high reusability and photocatalytic efficiency, along with adaptability to green synthesis.

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“…The TEM and SEM image indicated the formation of different sized and well-dispersed spherical nanoparticles (Figure 4). The synthesized AgNPs showed antimicrobial activity against gram-positive bacteria Bacillus subtilus.Jha and Shimpi [57] used the extract of M. charantia fruits to rapidly fabricate crystalline and spherical silver nanoparticles (5 min) (Figure 5). The authors noted that flavonoid and protein molecules worked as reducing and stabilizing agents, respectively, during the fabrication process.…”

Section: Synthesis Of Silver Nanoparticlesmentioning

confidence: 99%

A Review on Different Plants Extract Mediated Silver Nanoparticles: Preparation, Antimicrobials, and Antioxidant

et al. 2021

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Silver nanoparticles have shown success in many applications, especially in the field of biochemistry, by controlling the shape and size of these nanoparticles, which had a significant impact on the diversity of their antimicrobial properties. Many different shapes and sizes of silver nanoparticles can be prepared by various techniques, the most important of which is the use of capping agents, where the role of capping agents is not limited to controlling both sizes and shape only but extends to the stability of nanoparticles nanostructures. In addition, the type of capping agent has an influential role in the surface efficiency of the formed silver nanoparticles. However, multiple concerns have been raised regarding the environmental safety and human health impacts of the use of chemically manufactured capping agents. This review included the manufacture of silver nanoparticles using aqueous extract of some plants, flowers, or fruits, and their applicability and activity in various fields such as antioxidants and antibacterials were examined. Also, some of the most common and popular chemical and physical methodologies are initially described, and the advantages and disadvantages of using these methods to prepare silver nanoparticles are considered. Green synthesis methodologies have been discussed in detail with emphasis on their benefits and applications. Much of the recent literature related to the use of plant extracts have been addressed, and the effects of basic reaction parameters, such as temperature, pH, precursor, and extract concentration, on silver nanostructure size and morphology have been reported. Moreover, current challenges related to the green synthesis of silver nanostructures and future directions have been identified. In summary, the review aims to demonstrate the true potential of green nanotechnology towards the synthesis of silver nanostructures in various morphology and the possibility of moving away from current chemical techniques towards more environmentally friendly, less hazardous, simpler, and high efficient material as antimicrobial activity and Anti-oxidant.

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Spherical nanosilver: Bio-inspired green synthesis, characterizations, and catalytic applications

Cited by 40 publications

References 74 publications

Emerging trends in clinical implications of bio-conjugated silver nanoparticles in drug delivery

Emerging trends in clinical implications of bio-conjugated silver nanoparticles in drug delivery

Synthesis of ZnO nanoparticles using peels of Passiflora foetida and study of its activity as an efficient catalyst for the degradation of hazardous organic dye

A Review on Different Plants Extract Mediated Silver Nanoparticles: Preparation, Antimicrobials, and Antioxidant

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