Green synthesis of silver nanoparticle-reduced graphene oxide using Psidium guajava and its application in SERS for the detection of methylene blue

Chettri, Prajwal; Vendamani, V.S.; Tripathi, Ajay; Singh, Manish Kumar; Pathak, A. P.; Tiwari, Archana

doi:10.1016/j.apsusc.2017.02.073

Cited by 95 publications

(36 citation statements)

References 41 publications

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“…They found that the bio fabricated Ag/rGO functionalised materials was an effective catalyst, which can be reused for several times without a significant loss of its activity . Similar work has been performed by Chettri et al . using Psidium guajava dried leaf extract.…”

Section: Phytochemical Fabrication Of Functional Nanostructuressupporting

confidence: 55%

“…The surface plasmon resonance of metal nanoparticles is highly sensitive towards their local environment, which enables low‐level deduction of various molecular analytes. On decorating them with graphene, ZnO and TiO 2 like nanostructures, their SPR attributed to the enhancement in its photoluminescence and surface‐enhanced Raman scattering property (SERS) . Silver nanoparticles are also known for their excellent antimicrobial property and it′s integration with various other metal, metal oxide, carbon, and cellulosic nanostructures offers enhanced antimicrobial activity by preventing agglomeration and the reduction of cytotoxicity ,.…”

Section: Introductionmentioning

confidence: 99%

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Phytochemical Process for the Functionalization of Materials with Metal Nanoparticles: Current Trends and Future Perspectives

Hariram

Vivekanandhan²

2018

ChemistrySelect

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The bioreduction process, that utilizes the plant extracts, have been explored extensively as a green chemical route for the synthesis of metal nanoparticles due to their eco-friendly protocol as well as versatility in the selection of various plant resources. Recent advances in this plant extract mediated biological process are the fabrication of functional nanostructures. Bioreduction mechanism catalyzes the combining process of metal nanoparticles with other kind of materials including metal, metal oxides, cellulosic, zeolite and carbon nanomaterials. Integrating metal nanoparticles with various materials offers new functional properties and improves their performance comparing to their pristine counterpart. In this review, plant-based biochemical substances, which influence the metal ion into metal and their controlled nucleation on the surface of other kinds of materials are highlighted, and the future prospect of this bio-based synthesis of functional nanostructures are discussed.[a] M. Hariram, Dr. S. Vivekanandhan

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Section: Phytochemical Fabrication Of Functional Nanostructuressupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Phytochemical Process for the Functionalization of Materials with Metal Nanoparticles: Current Trends and Future Perspectives

Hariram

Vivekanandhan²

2018

ChemistrySelect

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“…The XRD pattern of carrageenan-AgNPs was shown in Figure 3B. In this diagram, four diffractions peaks at about 38.4 • , 44.8 • , 65.0 • , 78.2 • were assigned to the (111), (200), (220), and (311) planes, respectively, indicating that AgNPs were faced-centered cubic (FCC) crystal Ag [34].…”

Section: Characterization Of Carrageenan-agnpsmentioning

confidence: 99%

Facile and Green Fabrication of Carrageenan-Silver Nanoparticles for Colorimetric Determination of Cu2+ and S2−

et al. 2020

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In the present work, silver nanoparticles (AgNPs) were prepared by a simple and green method using carrageenan as reducing and capping agent. The as-synthesized carrageenan-AgNPs was demonstrated as an effective duel colorimetric sensing for selective and sensitive recognition of Cu2+ and S2−, which could be used to detect these ions with naked eyes. In addition, the possible sensing mechanism was that Cu2+ ions caused serious aggregation of carrageenan-AgNPs, which led to the color change of carrageenan-AgNPs. AgNPs were etched by S2− forming Ag2S, which played an important role in the determination of S2− ions. Furthermore, it has been successfully applied to the determination of Cu2+ and S2− in tap water and lake water, showing its great potential for the analysis of environmental water samples.

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“…In addition, the charge transfer between silver nanoparticles and graphene was also considered to be the cause of the redshift. 27) With the increase of the number of film layers, the absorption characteristic peak intensity of RGO also gradually increases, indicating that the composite film grew uniformly. 3.3.2 Testing and analysis of the composite film sheet resistance The surface resistances of films are listed in Table 2.…”

Section: Morphology and Structural Characteristics Of Graph-mentioning

confidence: 96%

Photoelectric Characteristics of Reduced Graphene Oxide/Silver Nanoparticles Multilayer Films via Spin-Coating and Self-Assembly

et al. 2020

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The graphene oxide/silver nanoparticles (GO/AgNPs) composite films were prepared by spin coating combined with electrostatic selfassembly technology, and the reduced graphene oxide/silver nanoparticles (RGO/AgNPs) composite films were finally obtained at 600°C under Ar/H 2 atmosphere for 2 h. With the increase of the number of film layers, the absorption characteristic peak intensity of reduced graphene oxide (RGO) also gradually increases, indicating that the composite film grew uniformly. The conductivity of graphene/silver nanoparticles composite films not only increased with the decreased of particle size, but also increased with the increased of self-assembly and spin-coating times. The lowest sheet resistance of RGO/AgNPs28-10 film was only 0.392 k³/sq, which showed excellent conductive performance.

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Green synthesis of silver nanoparticle-reduced graphene oxide using Psidium guajava and its application in SERS for the detection of methylene blue

Cited by 95 publications

References 41 publications

Phytochemical Process for the Functionalization of Materials with Metal Nanoparticles: Current Trends and Future Perspectives

Phytochemical Process for the Functionalization of Materials with Metal Nanoparticles: Current Trends and Future Perspectives

Facile and Green Fabrication of Carrageenan-Silver Nanoparticles for Colorimetric Determination of Cu2+ and S2−

Photoelectric Characteristics of Reduced Graphene Oxide/Silver Nanoparticles Multilayer Films via Spin-Coating and Self-Assembly

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