One-step synthesis of reduced graphene oxide/gold nanoparticles under ambient conditions

Hurtado, R. Britto; Cortez-Valadez, M.; Aragon-Guajardo, J.R.; Cruz-Rivera, J.J.; Martínez-Suárez, Frank; Flores-Acosta, M.

doi:10.1016/j.arabjc.2017.12.021

Cited by 37 publications

(15 citation statements)

References 70 publications

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“…The broad absorption peak between 530 and 560 nm (Figure b) was recognized as the SPR band of hybridized AuNPs . Additionally, a less intense band was located at 396 nm between the absorption bands of rGO and AuNPs, which was attributed to the interaction of NPs and rGO laminates …”

Section: Results and Discussionmentioning

confidence: 97%

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Chrysin-Anchored Silver and Gold Nanoparticle-Reduced Graphene Oxide Composites for Breast Cancer Therapy

Sathishkumar

Balakrishnan

Prabukumar

et al. 2020

ACS Appl. Nano Mater.

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Natural polyphenol assisted fabrication of nanohybrids with improved stability and bioactivity have gained considerable interest in material science. In this study, the anticancer flavone chrysin (5,7-dihydroxyflavone ChR) was employed to fabricate silver (AgNPs) and gold nanoparticles (AuNPs) hybridized reduced graphene oxide (rGO) nanocomposites (ChR@Ag-rGONCs and ChR@Au-rGONCs) with long-term stabilities. Prepared nanocomposites (NCs) were characterized using high-throughput analyses. The hydroxyl (O–H) and carbonyl (CO) functional groups of ChR actively contribute to the reduction of GO/metal ions (Ag+ and Au3+) and uniform decoration of Ag and AuNPs on the rGO active sites. The presence of noble metal NPs on the rGO surface improved its thermal stability and performances in diverse physiological conditions. Moreover, the surface passivation of the fabricated NCs with natural anticancer flavone ChR improved its biocompatibility. Due to the synergistic impact of the plasmonic metal–rGO hybrids, the fabricated NCs exhibited an increased cytotoxic effect over that of free-ChR against two different breast carcinoma (MDA-MD-468 and MDA-MD-231) cell lines. The prepared NCs showed comparatively less toxicity against the normal mouse fibroblast (L929) cells, demonstrating the high safety of biofunctionalized NCs in anticancer therapy. We demonstrated that the generation of reactive oxygen species released by the metal ions coexisting on the rGO induce apoptosis. Hence, this work offers a natural and viable scaling-up procedure to synthesize noble metal NPs decorated hybrid rGO composites for useful antibreast cancer applications.

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Section: Results and Discussionmentioning

confidence: 97%

“…28 Additionally, a less intense band was located at 396 nm between the absorption bands of rGO and AuNPs, which was attributed to the interaction of NPs and rGO laminates. 29 3.2. Physicochemical Characterization of NCs.…”

Section: Resultsmentioning

confidence: 99%

Chrysin-Anchored Silver and Gold Nanoparticle-Reduced Graphene Oxide Composites for Breast Cancer Therapy

Sathishkumar

Balakrishnan

Prabukumar

et al. 2020

ACS Appl. Nano Mater.

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“…Carbon materials have generated increased interest because of their usage in heterogeneous catalysis as a support materials it is because of their enormous area and it is also chemically durable which permits a large loading of active sites [83] . Graphene and its derivatives provide excellent characteristics that make them an appealing option for catalysis when compared to activated carbon, carbon black, and CNTs [84–86,87–89] . The discovery that metal atoms catalyze the production of CNTs served as the motivation for the study of metal‐carbon interactions and the advancement of graphene‐supported metal applications [90] .…”

Section: Preparation Of Graphene Based Composites Materials For Organ...mentioning

confidence: 99%

Graphene‐based Composite Materials as Catalyst for Organic Transformations

et al. 2023

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Graphene is one of the most auspicious constituents in nanotechnology. It provides the most accurate theoretical 2‐D depiction of catalytic sustenance. Its exceptional, physico‐chemical, and mechanical qualities make it distinctive and also able to create composite materials with novel capabilities. Although using graphene as a single‐layered sheet as a catalytic tool has not been documented yet, certain encouraging outcomes using few‐layer graphene have previously been attained. We will quickly go through the most pertinent synthetic methods for obtaining graphene and graphene based materials in this article. The composites of graphene are used in various catalytic reactions, including Coupling reactions, Aza‐Michael addition, Hydration, Oxidation, Esterification, Pechmann Condensation, Knoevenagel Condensation, Ring‐Opening Polymerization, Friedel‐Crafts Addition, Ring Opening of Epoxides and Decarboxylation have been catalysed by these expertly crafted and prepared graphene‐based catalysts. The graphene based composites allows for easy, recyclable, arnold transform, and environmentally friendly photocatalysis and also mild, precise, and super effective conversions and synthesis.

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“…Carbon materials have attracted great attention as support materials used in heterogeneous catalysis because of their large surface area and chemical stability by virtue of which high loading of active sites is facilitated [34]. Among carbon materials, graphene and its derivatives (GO/rGO) have extraordinary properties, comparatively activated carbon, carbon black and CNTs that make it a promising candidate for catalysis [70][71][72][83][84][85]. Metal atoms are well recognized for catalyzing the growth of CNTs, and this was the basis for the study of metal-carbon interactions that encouraged applications focused on graphene-supported metals [86].…”

Section: Go/rgo As Catalyst Supportmentioning

confidence: 99%

“…In addition, the negatively charged surface of GO can be easily exploited to spread other catalytically active materials on its surface, including NPs of metal and metal oxide, to enhance their resultant properties [68,69]. For this purpose, many metal and/ or metal oxide NPs such as Cu [70], Ni [71], Au [72,73], Ag/CeO 2 [74], Pd [75] and Pt [76] have been incorporated into the GO/rGO. Furthermore, properties similar to that of pristine graphene can be achieved by rGO, which has been further examined for manifold catalytic applications [77][78][79][80].…”

Section: Introductionmentioning

confidence: 99%

Recent advances in the catalytic applications of GO/rGO for green organic synthesis

Sachdeva

2020

Green Processing and Synthesis

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Graphene is considered a promising catalyst candidate due to its 2D nature, single-atom thickness, zero bandgap and very high surface to volume ratio. Further, graphene oxide (GO) has been used as a catalytic support material for metal/metal oxide nanoparticles due to its tunable electrical properties. In addition, its high chemical stability and ultrahigh thermal conductivity may possibly promote high loading of catalytically active sites. This review article focuses on the recent progress in the catalytic applications of GO especially (i) as catalytic-support material (GO/reduced graphene oxide supported metal/metal oxide nanohybrids) for the green synthesis of biologically relevant molecules, (ii) for metal-free catalysis and (iii) for electrocatalysis, with special focus on graphene contribution to catalytic efficiency. The critical overview and future perspectives are also discussed.

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One-step synthesis of reduced graphene oxide/gold nanoparticles under ambient conditions

Cited by 37 publications

References 70 publications

Chrysin-Anchored Silver and Gold Nanoparticle-Reduced Graphene Oxide Composites for Breast Cancer Therapy

Chrysin-Anchored Silver and Gold Nanoparticle-Reduced Graphene Oxide Composites for Breast Cancer Therapy

Graphene‐based Composite Materials as Catalyst for Organic Transformations

Recent advances in the catalytic applications of GO/rGO for green organic synthesis

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