High catalytic activity of electrochemically reduced graphene composite toward electrochemical sensing of Orange II

Yun, Mira; Choe, Ju Eun; You, Jung‐Min; Ahmed, Mohammad Shamsuddin; Lee, Kyungmi; Üstündağ, Zafer

doi:10.1016/j.foodchem.2014.07.143

Cited by 41 publications

(26 citation statements)

References 34 publications

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“…Graphene has already been used in various fields, especially in catalysis, and sensors. [16][17][18][19][20][21][22][23] The graphene sheets can be readily synthesized by reducing oxygen functional groups such as hydroxyl, epoxide, and carboxyl groups (on planes and edges) present on the surface of graphene oxide (GO). 24 Doping is one of the simple and efficient way to increase the catalytic activity of graphene catalysts because they not only exhibit excellent electrocatalytic activity but also possess other advantages including low cost, better stability, and environment-friendly.…”

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confidence: 99%

Determination of Dopamine by Dual Doped Graphene-Fe₂O₃in Presence of Ascorbic Acid

Yasmin

Ahmed

Jeon

2015

J. Electrochem. Soc.

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Both nitrogen and sulfur dual doped graphene supported Fe 2 O 3 (NSG-Fe 2 O 3 ) have been prepared by hydrothermal methods and subsequently utilized for the electrochemical determination of dopamine (DA) in presence of ascorbic acid (AA). The NSG-Fe 2 O 3 has been characterized via transmission electron microscopy (TEM) and X-ray photoelectron spectroscopic (XPS). The electrochemical detection of DA was measured through the cyclic voltammetry, differential pulse voltammetry, and amperometric techniques in a 0.1 M phosphate buffer solution (PBS) at pH 7.4. Interferences have been investigated in presence of AA, glucose, serotonin, N 2 H 4 , and uric acid. The NSG-Fe 2 O 3 has shown good analytical performance for DA with comparatively better sensitivity (29.1 μA mM −1 ), long linear detection range (0.3-210 μM) and detection limit (0.035 μM) (S/N = 3). The catalytic rate constant for DA detection has been calculated as 9.6 × 10 4 M −1 s −1 with a good diffusion coefficient of 3.5 × 10 −4 cm 2 s −1 . The electrooxidation of DA may enhances by fast proton acceptance and/or electron donation due to higher electron density for excess loan pair electron that provided from N and S dual-doped graphene sheets. 3,4-dihydroxyphenyl ethylamine (dopamine, DA) plays a significant role as a neurotransmitter in the function of the central nervous, renal and hormonal system. Low levels or abnormalities in DA concentration may lead to several neurological diseases, such as schizophrenia, Parkinson's disease, attention deficit hyperactivity disorder, restless legs syndrome and drug addiction.1-4 It is, however, several analytical techniques have been developed for DA detection, including high performance liquid chromatography, 5 chemiluminescence 6 and gas chromatography-mass spectrometry, 7 but each technique has several disadvantages. On the other hand, electrochemical sensing is preferred alternative method because of simple operation, fast response, time savings, low-cost, high-sensitivity and excellent selectivity. [8][9][10][11] Nevertheless, the electrochemical determination of DA is generally hindered by high concentration ascorbic acid (AA) which is another electroactive species that plays an important role in human metabolism and interfering species for DA sensing. Through the electrochemical method, it is difficult to sense DA selectively in the presence of high concentration AA, because these two species are responding nearly the same oxidation potential on the bare electrode, resulting in poor selectivity and sensitivity of DA detection. 12Graphene sheets are highly conductive and have 2D flat lattices consisting of a monolayer of sp 2 -hybridized carbon atoms. Due to high electrical conductivity and electron mobility, large surface area, long-term stability and unique mechanical flexibility, 13-15 graphene has attracted a great deal of research interest. Graphene has already been used in various fields, especially in catalysis, and sensors. [16][17][18][19][20][21][22][23] The graphene sheets can be readily synthesiz...

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mentioning

confidence: 99%

Determination of Dopamine by Dual Doped Graphene-Fe₂O₃in Presence of Ascorbic Acid

Yasmin

Ahmed

Jeon

2015

J. Electrochem. Soc.

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“…A number of studies have explored the cooperation and synergistic effects between nanostructured metals and graphene paper, such as Pt nanoparticles (PtNPs) [59], Pt nanowires (PtNWs) [60], Au@Pt core-shell NPs [61], Au nanoparticles (AuNPs) [62] and Ag nanoparticles (NPs) [63]. As we mentioned in Section 2.1, CVD has made a great contribution to the preparation of graphene films.…”

Section: Metallic Nanostructuresmentioning

confidence: 99%

“…Graphene-Paper Based Electrochemical Sensors http://dx.doi.org/10.5772/intechopen.68186quality control in industrial, food and agricultural products [9,34,59,61,96]. In Section 5, we mainly address the applications of graphene papers as different types of electrochemical sensor.…”

Section: Applications Of Graphene Paper As Electrochemical-sensing Plmentioning

confidence: 99%

Graphene-Paper Based Electrochemical Sensors

Zhang¹,

Halder²,

Cao³

et al. 2017

Electrochemical Sensors Technology

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Graphene paper as a new form of graphene-supported nanomaterials has received worldwide attention since its first report in 2007. Due to their high flexibility, lightweight and good electrical conductivity, graphene papers have demonstrated the promising potential for crucial applications in electrochemical sensors and energy technologies among others. In this chapter, we present some examples to overview recent advances in the research and development of two-dimensional (2D) graphene papers as new materials for electrochemical sensors. The chapter covers the design, fabrication, functionalization and application evaluations of graphene papers. We first summarize the mainstream methods for fabrication of graphene papers/membranes, with the focus on chemical vapour deposition techniques and solution-processing assembly approaches. A large portion of this chapter is then devoted to the highlights of specific functionalization of graphene papers with polymer and nanoscale functional building blocks for electrochemical-sensing purposes. In terms of electrochemical-sensing applications, the emphasis is on enzyme-graphene and nanoparticle-graphene paper-based systems for the detection of glucose. We finally conclude this chapter with brief remarks and outlook.

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“…[1][2][3] The electrochemically reduced GO (ERGO) sheets were found to be more conductive than those prepared through chemical reduction in electrocatalysis of dopamine (DA), and was found as the highly pure by using electrochemical approach while this method is green, fast, and the result could be contamination free from the reduced material. 1 Due to its high electrical conductivity, large surface area, long-term stability and unique mechanical flexibility, [4][5][6] graphene has already been used in various fields, especially in sensors, 2,7,8 capacitor 9 and electrochemical catalysis.…”

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confidence: 99%

The Determination of Dopamine in Presence of Serotonin on Dopamine-Functionalized Electrochemically Prepared Graphene Biosensor

Han

Ahmed

Jeong

2015

J. Electrochem. Soc.

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Reported herein is the synthesis of electrochemically prepared graphene with dopamine (DA) functionalization and its application for the electrochemical detection of DA in presence of serotonin (5-HT). Graphene oxide-DA (GO-DA) resulted from the condensation reaction of GO and DA. It was characterized via several instrumental methods. The electrochemical reduction of GO-DA (ERGO-DA) has been employed for the electrochemical detection of DA without and with 5-HT. The electrochemical detection of DA has been verified through cyclic voltammetry, differential pulse voltammetry, and amperometric techniques in a 0.1 M phosphate buffer saline (PBS, pH 7.4). The influence of the accumulation time and pH of the PBS at ERGO-DA modified electrode for DA oxidation has been investigated. The interference has also been performed using interfering substances such as 5-HT, glucose, ascorbic acid, H 2 O 2 , and uric acid. The detection limit and linear range of DA have been calculated as 0.04 μM and 0.5-100 μM, respectively, (where s/n = 3) at the ERGO-DA modified electrode. The real sample analysis has done without any difficulty and this biosensor can be used up to 10 days.

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High catalytic activity of electrochemically reduced graphene composite toward electrochemical sensing of Orange II

Cited by 41 publications

References 34 publications

Determination of Dopamine by Dual Doped Graphene-Fe₂O₃in Presence of Ascorbic Acid

Determination of Dopamine by Dual Doped Graphene-Fe₂O₃in Presence of Ascorbic Acid

Graphene-Paper Based Electrochemical Sensors

The Determination of Dopamine in Presence of Serotonin on Dopamine-Functionalized Electrochemically Prepared Graphene Biosensor

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High catalytic activity of electrochemically reduced graphene composite toward electrochemical sensing of Orange II

Cited by 41 publications

References 34 publications

Determination of Dopamine by Dual Doped Graphene-Fe2O3in Presence of Ascorbic Acid

Determination of Dopamine by Dual Doped Graphene-Fe2O3in Presence of Ascorbic Acid

Graphene-Paper Based Electrochemical Sensors

The Determination of Dopamine in Presence of Serotonin on Dopamine-Functionalized Electrochemically Prepared Graphene Biosensor

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Determination of Dopamine by Dual Doped Graphene-Fe₂O₃in Presence of Ascorbic Acid

Determination of Dopamine by Dual Doped Graphene-Fe₂O₃in Presence of Ascorbic Acid