Graphene metal nanocomposites — Recent progress in electrochemical biosensing applications

Khalil, Ibrahim; Rahmati, Shahrooz; Julkapli, Nurhidayatullaili Muhd; Yehye, Wageeh A.

doi:10.1016/j.jiec.2017.11.001

Cited by 54 publications

(24 citation statements)

References 199 publications

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“…GO-based biosensors have been developed by taking advantage of their unique physiochemical properties such as extensive surface region, great electrical conducting ability and the magnificent ability for stacking different biomolecules by means of chemical or physical association [73][74][75].…”

Section: Biosensing and Bioimagingmentioning

confidence: 99%

Graphene and graphene oxide as nanomaterials for medicine and biology application

et al. 2018

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Graphene-and graphene oxide-based nanomaterials have gained broad interests in research because of their unique physiochemical properties. The 2D allotropic structure allows it to be used in various biological fields. The biomedical applications of graphene and its composite include its use in gene and small molecular drug delivery. It is further used for biofunctionalization of protein, in anticancer therapy, as an antimicrobial agent for bone and teeth implantation. The biocompatibility of the newly synthesized nanomaterials allows its substantial use in medicine and biology. The current review summarizes the chemical structure and biological application of graphene in various fields.

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Section: Biosensing and Bioimagingmentioning

confidence: 99%

Graphene and graphene oxide as nanomaterials for medicine and biology application

et al. 2018

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“…Для підвищення теплопровідності створюють нанокомпозити графен-нанометал, в яких наночастинки металу мають зменшити міжконтактний термічний опір [4,5]. З іншого боку, специфічні властивості контактів графен-нанометал роблять їх корисними у багатьох галузях нанонауки, зокремау наноелектроніці, у Раман-спектроскопії [4,6,7]. Нанокомпозити на основі графену та наночастинок металів широко використовуються в якості біосенсорів.…”

Section: вступunclassified

“…У сучасних нанотехнологіях використовують біосенсори: графен-Pt, графен-Pd, графен-Au, графен-Ag, графен-Ni, графен-Cu. Також відомі біосенсори на основі графену та оксидів металів (NiO, CuO, ZnO, TiO 2 ), сплавів, біметалів, а також біосенсори графен-триметал [4].…”

Section: вступunclassified

The influence of gold nanoparticles on the thermal conductivity of water solutions of graphen

Korskanov

Fesenko

Tsebrienko

et al. 2019

CSL

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The objects of study were water dispersions of raw graphene (hereinafter referred to as graphene-n), higher degree of purification of graphene samples (hereinafter graphene), and nanoparticles of graphene-Au nanoparticles based on them. The thermal conductivity of water graphene dispersions and water dispersions of gold graphene nanoparticles nanostructures at different temperatures and component ratios was investigated. The values of effective thermal conductivity of dry nanofillers are calculated. The temperature dependences of the thermal conductivity of the nanofillers were obtained. It is found that the in-thermal conductivity of water dispersions of purified graphene is higher than the thermal conductivity of raw graphene as a result of better packing of nanoparticles in pure graphene nanofillers compared to raw. The effect of enhancement of thermal conductivity of gold nanoparticles, which is accompanied by higher absolute values of thermal conductivity of nanoparticles of graphene-nanoparticles of gold than the corresponding graphene, was revealed. At the same time, there is a significant difference in thermal conductivity between nanoparticles of graphene nanoparticles of gold. It is established that higher values of thermal conductivity of graphene-nanoparticles nanostructures of gold are the result of the reinforcing action of a gold nanoparticle substrate, which is formed as a result of joint sedimentation with graphene during the formation of nano-flakes from water solution during evaporation of water.

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“…However, suitable matrix materials, such as zeolite, silica, activated carbon, carbon nanotube, graphene (Gr), and graphene oxide (GO), have been reported to enhance the photocatalytic degradation efficiency [ 13 ]. Gr has a two-dimensional planar structure comprising single-layer sp 2 -bonded carbon atoms arranged in a honeycomb lattice structure, zero band-gap semiconductor properties with a large surface area, high charge carrier mobility, high adsorption capacity, and excellent electron transfer rate [ 3 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis

et al. 2020

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Graphene (Gr)/gold (Au) and graphene-oxide (GO)/Au nanocomposites (NCPs) were synthesized by performing pulsed-laser-induced photolysis (PLIP) on hydrogen peroxide and chloroauric acid (HAuCl4) that coexisted with Gr or GO in an aqueous solution. A 3-month-long aqueous solution stability was observed in the NCPs synthesized without using surfactants and additional processing. The synthesized NCPs were characterized using absorption spectroscopy, transmission electron microscopy, Raman spectroscopy, energy dispersive spectroscopy, and X-ray diffraction to prove the existence of hybrid Gr/Au or GO/Au NCPs. The synthesized NCPs were further evaluated using the photocatalytic reaction of methylene blue (MB), a synthetic dye, under UV radiation, visible light (central wavelength of 470 nm), and full spectrum of solar light. Both Gr/Au and GO/Au NCPs exhibited photocatalytic degradation of MB under solar light illumination with removal efficiencies of 92.1% and 94.5%, respectively.

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Graphene metal nanocomposites — Recent progress in electrochemical biosensing applications

Cited by 54 publications

References 199 publications

Graphene and graphene oxide as nanomaterials for medicine and biology application

Graphene and graphene oxide as nanomaterials for medicine and biology application

The influence of gold nanoparticles on the thermal conductivity of water solutions of graphen

Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis

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