Reduction of metal nanoparticle decorated flexible graphene oxide by laser at various temperatures and under selected atmospheres

Moafi, A.; Heidari, Omid; Soltannia‬, Babak; Włodarski, W.; Shahi, Fatemeh; Parvin, Parviz

doi:10.1016/j.cartre.2021.100140

Cited by 8 publications

(7 citation statements)

References 56 publications

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“…Globally, there is a growing demand for nanostructured materials, as they are the key elements in enabling tools for renewable energy and hydrogen storage as well as indicator applications. Materials based on graphene have been shown to be very promising in achieving this goal due to their interesting properties, resulting in the conduction of a large number of theoretical and experimental studies [ 3 ]. With graphene being a flat monolayer of hexagonally arranged sp 2 -bonded carbon atoms bundled in a 2D figure-like network, it has been offered considerable attention from the experimental and the theoretical communities alike.…”

Section: Introductionmentioning

confidence: 99%

“…Graphite oxide is a material that is produced through the oxidation of graphite leading to an increased interlayer spacing and the functionalization of its basal planes. Reproducible GO properties can be obtained depending on the state of preparation and on the graphene crystal, powders and particle size in relationship with the careful control of the water content of the applied acids, temperature conditions, length of time and drying conditions [ 3 ]. Graphene oxide (GO) is a two-dimensional carbon nanomaterial composed of carbon atoms organized in a hexagonal lattice, forming a flat sheet and containing oxygenated groups.…”

Section: Introductionmentioning

confidence: 99%

“…In noble metal/graphene nanocomposites using Pd, Pt, Au and Ag nanoparticles, the graphene oxide and metal salts are completely reduced. After decorating metal NPs on GO surfaces, the nonlinear optical properties can be significantly improved [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

et al. 2023

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In recent years, research has focused on developing materials exhibiting outstanding mechanical, electrical, thermal, catalytic, magnetic and optical properties such as graphene/polymer, graphene/metal nanoparticles and graphene/ceramic nanocomposites. Two-dimensional sp2 hybridized graphene has become a material of choice in research due to the excellent properties it displays electrically, thermally, optically and mechanically. Noble nanomaterials also present special physical and chemical properties and, therefore, they provide model building blocks in modifying nanoscale structures for various applications, ranging from nanomedicine to catalysis and optics. The introduction of noble metal nanoparticles (NPs) (Au, Ag and Pd) into chemically derived graphene is important in opening new avenues for both materials in different fields where they can provide hybrid materials with exceptional performance due to the synergistical result of the specific properties of each of the materials. This review presents the different synthetic procedures for preparing Pt, Ag, Pd and Au NP/graphene oxide (GO) and reduced graphene oxide (rGO) composites.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

et al. 2023

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“…Various insoluble supports such as silica, titania, alumina, zirconia, carbon, cellulose, zeolites and clays, metal oxides, GO, rGO, and metal‐organic frameworks have widely been used for the titled purposes [25–27] . In this area, numerous strategies and protocols have been used to immobilize magnetic nanoparticles on the surface of GO/rGO, formation of MNPs on the surface of GO/rGO, and embedment of pre‐prepared MNPs via covalent bonds to GO and rGO [28–31] …”

Section: Introductionmentioning

confidence: 99%

“…[25][26][27] In this area, numerous strategies and protocols have been used to immobilize magnetic nanoparticles on the surface of GO/rGO, formation of MNPs on the surface of GO/ rGO, and embedment of pre-prepared MNPs via covalent bonds to GO and rGO. [28][29][30][31] Functionalization of GO and rGO is usually carried out by the deposition of organic moieties on the surface of graphene oxide or reduced graphene oxide via covalent bonding with carboxylic acid or esters groups. [32,33] In this context, rGO has been widely used and therefore numerous catalyst species are immobilized or deposited on reduced graphene oxide.…”

Section: Introductionmentioning

confidence: 99%

The Immobilized Zirconocene Chloride on Magnetite‐reduced Graphene Oxide: A Highly Efficient and Reusable Heterogeneous Nanocatalyst for One‐pot Three‐component Synthesis of Tetrahydrobenzo[b]pyrans and Dihydropyrano[3,2‐c]chromenes

Bayzidi

Zeynizadeh

2022

ChemistrySelect

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The present paper describes the synthesis and characterization of the functionalized magnetite reduced graphene oxide (rGO@Fe3O4) with zirconocene dichloride as rGO@Fe3O4@ZrCp2Cl2. The prepared magnetic nanomaterial was characterized by Fourier‐transform infrared spectroscopy (FT‐IR), scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDX), X‐ray diffraction (XRD), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), inductively coupled plasma optical emission spectroscopy (ICP‐OES) and mass spectrometry (MS). This new heterogeneous nanocatalyst showed the perfect catalytic activity towards synthesis of tetrahydrobenzo[b]pyran and Dihydropyrano[3,2‐c]chromenes derivatives through multicomponent reaction of dimedone or 4‐hydroxycoumarin, malononitrile and aromatic aldehydes in polyethylene glycol 400 (PEG‐400) at 100 °C. The influence of the amount of nanocatalyst, varying temperature of the reaction and the kind of solvent on the rate of condensation reaction was investigated. Recovery and reusability of the applied nanocatalyst was examined for five consecutive cycles without the significant loss of its catalytic activity.

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Graphene‐Based Catalysts: Emerging Applications and Potential Impact

Alam,

Allag,

Naveed‐Ur‐Rehman

et al. 2024

The Chemical Record

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Carbon nanofillers in general and graphene in particular are considered as promising potential candidates in catalysis due to their two‐dimensional (2D) nature, zero bandwidth, single atom thickness with a promising high surface area: volume ratio. Additionally, graphene oxide via result of tunable electrical properties has also been developed as a catalytic support for metal and metal oxide nanofillers. Moreover, the possession of higher chemical stability followed by ultrahigh thermal conductivity plays a prominent role in promoting higher reinforcement of catalytically active sites. In this review we have started with an overview of carbon nanofillers as catalyst support, their main characteristics and applications for their use in heterogeneous catalysis. The review article also critically focusses on the catalytic properties originating from both functional groups as well as doping. An in‐depth literature on the various reaction catalysed by metal oxide based nanoparticles supported on GO/rGO has also been incorporated with a special focus on the overall catalytic efficiency with respect to graphene contribution. The future research prospective in the aforementioned field has also been discussed.

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Reduction of metal nanoparticle decorated flexible graphene oxide by laser at various temperatures and under selected atmospheres

Cited by 8 publications

References 56 publications

Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

Noble Metals Functionalized on Graphene Oxide Obtained by Different Methods—New Catalytic Materials

The Immobilized Zirconocene Chloride on Magnetite‐reduced Graphene Oxide: A Highly Efficient and Reusable Heterogeneous Nanocatalyst for One‐pot Three‐component Synthesis of Tetrahydrobenzo[b]pyrans and Dihydropyrano[3,2‐c]chromenes

Graphene‐Based Catalysts: Emerging Applications and Potential Impact

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