Green synthesis of silver nanoparticles in oil-in-water microemulsion and nano-emulsion using geranium leaf aqueous extract as a reducing agent

Rivera-Rangel, Rubén Darío; González-Muñoz, M. Pilar; Ávila-Rodríguez, Mario; Razo-Lazcano, Teresa Alejandra; Solans, Conxita

doi:10.1016/j.colsurfa.2017.07.051

Cited by 159 publications

(73 citation statements)

References 34 publications

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“…Although reduction of metal nanoparticles occur using bio reducing agent such as bacteria, yeast and fungi, but growth of nanoparticle is not known. Recently, metal nanoparticle particularly silver is synthesized using plant extract as reducing as well as stabilizing agent, which has wide range of applications ,. According to previous literature, silver ion is reduced by using bio‐reducing agent such as tamarind fruit extract, olive leaf extract, Acmella oleracea flower extract for antibacterial and sensing property.…”

Section: Introductionmentioning

confidence: 99%

Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg²⁺ Sensing and Catalytic Degradation

et al. 2019

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Silver nanoparticles embedded reduced graphene oxide (rGO−Ag) nanocomposites are synthesized by green technique using clove leaf aqueous extract as reducing agent. The surface plasmon resonance (SPR) peak of silver nanoparticles (Ag NPs) at 410 nm in rGO−Ag nanocomposites is analysed by UV–visible spectroscopy. The intensity of surface plasmon resonance (SPR) peak of Ag NPs in rGO−Ag nanocomposites is decreased with addition of Hg2+ ion at small interval of time. This is due to the occurrence of redox reaction between Ag(0) and Hg2+ and also for the formation Ag/Hg amalgam. The lower limit of detection (LOD) of rGO−Ag nanocomposites for Hg2+ ion is found to be 9.5 nM. Moreover, the rGO−Ag nanocomposites may be used as catalyst for degradation of methylene blue (MB) by sodium borohydride (NaBH4) at ambient temperature. The adsorption efficiency of methylene blue is increased due to hydrogen bonding and electrostatic interaction along with π–π stacking between the catalyst and the dye molecules. The methylene blue is degraded within a small time due to large surface area and more number of active sites of rGO−Ag nanocomposites. The as‐synthesized nanocomposite is a potential hybrid material having dual activity as Hg2+ sensing and catalytic behaviour in degradation of methylene blue.

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Section: Introductionmentioning

confidence: 99%

Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg²⁺ Sensing and Catalytic Degradation

et al. 2019

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“…Furthermore, a novel method to synthesize Fe NPs in situ in O/W microemulsion (Brime/n-hexane/SDS and span 80 mixture/isopropyl alcohol) was developed by Hu et al [24] to increase their performance in oil recovery. Rivera-Rangel and coworkers [25] fabricated the Ag NPs by using the O/W microemulsion (Brij 96/1, 2hexanediol/castor oil, extract of geranium leaf as a reducing agent) method as a template. They found that in the microemulsion method, the obtained Ag NPs were of a controllable size and the method was more eco-friendly as compared to the nanoemulsion method.…”

Section: Mechanism Involved Behind Nanoparticles Preparation From Micmentioning

confidence: 99%

Microemulsions as Nanotemplates: A Soft and Versatile Approach

Kanwar¹,

Rathee²,

Patil³

et al. 2018

Microemulsion - A Chemical Nanoreactor [Working Title]

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Template efficacy of microemulsions in generating nanoparticles has garnered considerable attention in the world of colloidal science. A microemulsion is an optically isotropic and thermodynamically stable colloidal dispersion, which possess spherical droplets (either of W/O or O/W) of the size <50 nm. In microemulsions, the spontaneous formation of domains of nanometric dimensions significantly facilitates their exploitation as potential nanoreactors for the production of stable nanoparticles (due to their cost-effectiveness and ease of preparation). The present chapter provides an overview of microemulsions as efficient nanotemplates, with a detailed account of plausible nanomaterials, i.e., metallic nanoparticles, quantum dots, polymeric nanoparticles, mesoporous silica nanoparticles, solid lipid nanoparticles, nanostructured lipid carriers, etc. Based on the high surface area, good crystallinity, controllable particle size, outstanding catalytic, and magnetic properties, the exploitation of nanoparticles as efficient catalysts and drug delivery modules has also been highlighted.

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“…Many studies have used different plant extracts such as Azadirachta indica, Crocus sativus L., Calliandra haematocephala, Neem leaves, Madhuca longifolia, grape seed extract, Andean blackberry fruit extract, geranium leaf aqueous extract, marigold flower, etc. [7,[14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles as Multi-Functional Drug Delivery Systems

Ivanova¹,

Gugleva²,

Dobreva³

et al. 2019

Nanomedicines

121

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Nanoparticles can surmount some essential problems of conventional small molecules or biomacromolecules (e.g., DNA, RNA, and protein) used in some diseases by allowing targeted delivery and overcome through biological barriers. Recently, silver nanoparticles have been harnessed as delivery vehicles for therapeutic agents, including antisense oligonucleotides, and other small molecules. Silver is the most profit-oriented precious metal used in the preparation of nanoparticles and nanomaterials because of its antibacterial, antiviral, antifungal, antioxidant and unusually enhanced physicochemical properties compared to the bulk material such as optical, thermal, electrical, and catalytic properties. Small silver nanoparticles offer many advantages as drug carriers, including adjustable size and shape, enhanced stability of surface-bound nucleic acids, high-density surface ligand attachment, transmembrane delivery without harsh transfection agents, protection of the attached therapeutics from degradation, and potential for improved timed/controlled intracellular drug-delivery. Plant-mediated synthesis of silver nanoparticles is gaining interest due to its inexpensiveness, providing a healthier work environment, and protecting human health leading to lessening waste and safer products. The chapter presents the essential physicochemical characteristics, antibacterial, and anticancer properties which silver nanoparticles obtained by plant-mediated methods possess, and their application as drug-delivery systems with a critical view on the possible toxicity on the human body.

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Green synthesis of silver nanoparticles in oil-in-water microemulsion and nano-emulsion using geranium leaf aqueous extract as a reducing agent

Cited by 159 publications

References 34 publications

Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg²⁺ Sensing and Catalytic Degradation

Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg²⁺ Sensing and Catalytic Degradation

Microemulsions as Nanotemplates: A Soft and Versatile Approach

Silver Nanoparticles as Multi-Functional Drug Delivery Systems

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Green synthesis of silver nanoparticles in oil-in-water microemulsion and nano-emulsion using geranium leaf aqueous extract as a reducing agent

Cited by 159 publications

References 34 publications

Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg2+ Sensing and Catalytic Degradation

Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg2+ Sensing and Catalytic Degradation

Microemulsions as Nanotemplates: A Soft and Versatile Approach

Silver Nanoparticles as Multi-Functional Drug Delivery Systems

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Product

Resources

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Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg²⁺ Sensing and Catalytic Degradation

Dual Activities of Nano Silver Embedded Reduced Graphene Oxide Using Clove Leaf Extracts: Hg²⁺ Sensing and Catalytic Degradation