Green synthesis and characterization of silver nanoparticles (Ag NPs) from extract of plant Radix Puerariae: An efficient and recyclable catalyst for the construction of pyrimido[1,2-b]indazole derivatives under solvent-free conditions

Balwe, Sandip Gangadhar; Shinde, Vijay Vilas; Rokade, Ashish A.; Park, Seong Soo; Jeong, Yeon Tae

doi:10.1016/j.catcom.2017.06.006

Cited by 66 publications

(12 citation statements)

References 17 publications

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“…Use of different capping agent for the synthesis of metallic nanoparticles have received considerable attention in the past two decades, which exhibit different size, shape, optical, catalytic, water treatment, and sensing properties in the field of chemical, physical and medical sciences [1][2][3][4]. Due to presence of sharp SPR band, fabrication of AgNPs have been the research interest of various scientists in nanotechnology by using different chemical and physical methods [5,6].…”

Section: Introductionmentioning

confidence: 99%

Citrus sinensis peel waste assisted synthesis of AgNPs: effect of surfactant on the nucleation and morphology

2020

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Silver nanoparticles (AgNPs) were synthesized by using Citrus sinensis peel waste extract. Optical images and UV-visible spectroscopy reveals the appearance of yellow to brown-red color and surface plasmon resonance (SPR) band at 400-480 nm, respectively, due to the formation of AgNPs. The stable perfect transparent silver sols were formed in presence of cetyltrimethylammonium bromide (CTAB). The brownish precipitates appeared with sodium dodecyl sulphate (SDS) after 3 h. The nucleation, position of SPR band and intensity depends on the head group nature of cationic and anionic micelles of SDS and CTAB. The as-prepared AgNPs were characterized using conventional techniques such as Fouriertransform infra-red, energy dispersed X-ray detector, scanning electron microscope, transmission electron microscope, and X-ray diffractometer. Zeta potential of CTAB-AgNPs was calculated and found to be stable for ca. 1 week. Molar concentration (3.3 × 10 −4 mol/L) and aggregation number (607,339.917) of DPE-AgNPs were calculated. Ascorbic acid, citric acid and total reducing sugars were estimated in dry and fresh peel extract. Gram positive Staphylococcus aureus and Gram-negative Escherichia coli bacteria shows excellent antibacterial activities toward DPE-AgNPs.

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Section: Introductionmentioning

confidence: 99%

Citrus sinensis peel waste assisted synthesis of AgNPs: effect of surfactant on the nucleation and morphology

2020

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“…In addition to their outstanding biomedical and environmental applications, nanoparticles can also have great prospects in many other technologies. For example, the bio-based nanoparticles can act as green catalysts for the synthesis of novel bioactive compounds (Balwe et al 2017 ). They have many potentials for antioxidant and free radical scavenging activities (Yousaf et al 2020 ).…”

Section: Challengesmentioning

confidence: 99%

Formation, antimicrobial activity, and biomedical performance of plant-based nanoparticles: a review

Nguyen

et al. 2022

Environ Chem Lett

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Because many engineered nanoparticles are toxic, there is a need for methods to fabricate safe nanoparticles such as plant-based nanoparticles. Indeed, plant extracts contain flavonoids, amino acids, proteins, polysaccharides, enzymes, polyphenols, steroids, and reducing sugars that facilitate the reduction, formation, and stabilization of nanoparticles. Moreover, synthesizing nanoparticles from plant extracts is fast, safe, and cost-effective because it does not consume much energy, and non-toxic derivatives are generated. These nanoparticles have diverse and unique properties of interest for applications in many fields. Here, we review the synthesis of metal/metal oxide nanoparticles with plant extracts. These nanoparticles display antibacterial, antifungal, anticancer, and antioxidant properties. Plant-based nanoparticles are also useful for medical diagnosis and drug delivery.

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“…Similar catalytic properties of silver nanoparticles were demonstrated for the degradation of Congo red [56,63], methylene blue and Congo red [57,58], methylene blue, methyl orange and methyl red [61], methyl orange [62], methylene blue [64,66], eosin Y (>97% degradation after 60 min) [67], Congo red [63,68], Coomassie Brilliant Blue G-250 [69], and a reduction of p -nitroaniline to p -phenylenediamine [70]. Phytosynthesized silver nanoparticles were also evaluated as catalysts for hydration of cyanamides in aqueous medium [71] and for the construction of pyrimido[1,2-b]indazole derivatives under solvent-free conditions [72].…”

Section: Mono- and Bi-metallic Catalysts: Phytosynthesis Charactementioning

confidence: 99%

Phyto-Nanocatalysts: Green Synthesis, Characterization, and Applications

et al. 2019

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Catalysis represents the cornerstone of chemistry, since catalytic processes are ubiquitous in almost all chemical processes developed for obtaining consumer goods. Nanocatalysis represents nowadays an innovative approach to obtain better properties for the catalysts: stable activity, good selectivity, easy to recover, and the possibility to be reused. Over the last few years, for the obtaining of new catalysts, classical methods—based on potential hazardous reagents—have been replaced with new methods emerged by replacing those reagents with plant extracts obtained in different conditions. Due to being diversified in morphology and chemical composition, these materials have different properties and applications, representing a promising area of research. In this context, the present review focuses on the metallic nanocatalysts’ importance, different methods of synthesis with emphasis to the natural compounds used as support, characterization techniques, parameters involved in tailoring the composition, size and shape of nanoparticles and applications in catalysis. This review presents some examples of green nanocatalysts, grouped considering their nature (mono- and bi-metallic nanoparticles, metallic oxides, sulfides, chlorides, and other complex catalysts).

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Green synthesis and characterization of silver nanoparticles (Ag NPs) from extract of plant Radix Puerariae: An efficient and recyclable catalyst for the construction of pyrimido[1,2-b]indazole derivatives under solvent-free conditions

Cited by 66 publications

References 17 publications

Citrus sinensis peel waste assisted synthesis of AgNPs: effect of surfactant on the nucleation and morphology

Citrus sinensis peel waste assisted synthesis of AgNPs: effect of surfactant on the nucleation and morphology

Formation, antimicrobial activity, and biomedical performance of plant-based nanoparticles: a review

Phyto-Nanocatalysts: Green Synthesis, Characterization, and Applications

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