From single-layer graphene to HOPG: Universal functionalization strategy with perfluoropolyether for the graphene family materials

Gibertini, Eugenio; Gabatel, Luca; Lucotti, Andrea; Bussetti, Gianlorenzo; Bianchi, Claudia L.; Nobili, Luca Giampaolo; Magagnin, Luca; Navarrini, W.; Sansotera, Maurizio

doi:10.1016/j.diamond.2021.108810

Cited by 1 publication

(1 citation statement)

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“…In addition to its original features, graphene’s surface modification can provide additional functions and expand its range of applications. The material can be modified in terms of its physical and chemical characteristics, such as its preferred interaction with nearby species, improved mechanical strength, magnetic capabilities, catalytic qualities, and semiconducting behavior [ 1 ]. However, due to the disruption of its conjugated structure, the chemical modification of graphene affects its electrical conductivity [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Determination of Photothermal and EMI Shielding Efficiency of Graphene–Silver Nanoparticle Composites Prepared under Low-Dose Gamma Irradiation

Stefanović,

Kepić,

Momčilović

et al. 2024

Nanomaterials

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Silver nanoparticles (Ag NPs) have been produced by low-dose (1–20 kGy) gamma irradiation of silver nitrate in the presence of graphene-based material (graphene oxide or electrochemically exfoliated graphene). The large surface area of those graphene-based materials combined with the presence of oxygen-containing functional groups on the surface provided successful nucleation and growth of Ag nanoparticles, which resulted in a uniformly covered graphene surface. The obtained Ag nanoparticles were spherical with a predominant size distribution of 10–50 nm for graphene oxide and 10–100 nm for electrochemically exfoliated graphene. The photothermal efficiency measurement showed a temperature increase upon exposure to a 532 nm laser for all samples and the highest photothermal efficiency was measured for the graphene oxide/Ag NP sample prepared at 5 kGy. Electromagnetic interference (EMI) shielding efficiency measurements showed poor shielding for the composites prepared with graphene oxide. On the other hand, all composites prepared with electrochemically exfoliated graphene showed EMI shielding to some extent, and the best performance was measured for the samples prepared at 5 and 20 kGy doses.

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Section: Introductionmentioning

confidence: 99%