A facile electrochemical sensor based on reduced graphene oxide and Au nanoplates modified glassy carbon electrode for simultaneous detection of ascorbic acid, dopamine and uric acid

Wang, Caiqin; Du, Jian; Wang, Huiwen; Zou, Cui'e; Jiang, Fengxing; Yang, Ping; Du, Yukou

doi:10.1016/j.snb.2014.07.077

Cited by 416 publications

(129 citation statements)

References 51 publications

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“…Fig. 3 presents the characterizations of cyclic voltammograms with the Fe(CN) 6 3í /Fe(CN) 6 4í redox activity at a bare GCE (a), as-prepared PABA modified GCE (b) and after electrochemically degraded PPABA/GCE (c). A couple of typical redox peaks of hexacyanoferrate appears on the bare GCE (curve a).…”

Section: Resultsmentioning

confidence: 99%

“…Dopamine (DA) plays a significant role in the function of the central nervous, renal, hormonal and cardiovascular system [5]. It is important to monitor DA sensitively and selectively not only for biomedical chemistry and neurochemistry research but also for diagnostic and pathological purpose [6]. Thus, great attention has been paid to the development of functional electrode systems for detection of DA.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Porous Para-aminobenzoic Acid Membrane Prepared by Electrochemical Method and Its Application in Voltammetric Determination of Dopamine

Zhang

Wang

et al. 2016

MATEC Web Conf.

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Abstract. In this paper, we prepared poly para aminobenzoic acid (PABA) membrane on a glassy carbon electrode (GCE) using cyclic voltammetry(CV) following electrochemically degrading to form a porous PABA (PPABA) membrane. The PPABA membrane was characterized using CV technique, scanning electron microscope (SEM) measurements. The PPABA membrane could improve sensitivity of dopamine (DA) and inhibit ascorbic acid (AA) and uric acid (UA) electrochemical oxidation. The PPABA/GCE-based electrohemical sensor displayed a good linear ranges from 0 ȝM to 30 ȝM DA with a low detection limits of 1.6 ȝM DA (S/N=3) in voltammetry measurement. The proposed sensor has the advantages of being simple, reproducible and stable and can be used as a new sensitive electrochemical biosensor for the detection of DA.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Porous Para-aminobenzoic Acid Membrane Prepared by Electrochemical Method and Its Application in Voltammetric Determination of Dopamine

Zhang

Wang

et al. 2016

MATEC Web Conf.

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“…The crystallite size is calculated by Debye-Scherrer formula [47]: D = Kλ/βcosθ, where D is the particle size, K is the Scherrer constant (shape factor), λ is the wavelength of the X-ray, β is the full width half maximum (FWHM), θ is the Braggle angle. The average size of Au deduced from the XRD profiles of the Au/EPA samples was found to be 7.6 nm by Scherrer equation.…”

Section: Xrd Measurementmentioning

confidence: 99%

“…We utilized dopamine (DA) as the interfering substance to test the performance of the developed sensors since the DA usually coexists with AA in biological samples. The amperometric responses of DA was tested in the normal physiological concentration of 100 nM DA [47]. Figure 9 shows the amperometric current response of Au/EPA-CPE to successive additions of 100 mM AA and 1 mM DA in PBS (pH 7.0) at the applied potential of 0.3 V vs. Ag/AgCl.…”

Section: Electroactivity Of Epa-cpe Andmentioning

confidence: 99%

Novel ascorbic acid sensor prepared from gold/aniline-pentamer-based electroactive polyamide composites

Tsai¹,

Lu²,

Lai³

et al. 2018

Express Polym. Lett.

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Recently, electroactive polymers incorporated with aniline oligomers have attracted research attention because of their superior properties such as good solubility, biodegradable properties and the ability to form films [1][2][3][4][5]. These synthetic strategies include post polymerization grafting of oligoanilines onto the polymer chain, polycondensation of reactive monomers containing oligoanilines to form polymers, and oxidative coupling polymerization to form oligoaniline segments during polymerization [6]. Chao and Wang synthesized a series of electroactive polymers which bear oligoaniline, phenylamine, and fluorene groups in their side chain [7][8][9]. The generated fluorescence showed a clear multiple stimuli-responsive behavior against redox species, pH, electricity, and pressure, contributed by the sensitive oligoaniline and phenylamine groups. Zagorska and co-workers prepared electroactive polymers combining the electrochromic properties of polythiophenes and oligoanilines [10,11]. Both the polythiophene main chains and the oligoaniline side chains could be doped in various ways. Yeh and coworkers synthesized a series of electroactive polymers such as epoxy [12], polyimide [13,14], polyurea [15], and polyamide [16] as anticorrosion coating materials. The mechanism for the enhanced corrosion protection ability of the electroactive polymer coatings could be attributed to the formation of passive metal oxide layers on the metal electrode surface, which was induced by the redox catalytic capabilities of the aniline oligomer [17,18]. Received 16 June 2017; accepted in revised form 6 September 2017Abstract. A novel gold/aniline-pentamer-based electroactive polyamide (Au/EPA) composites that can modify carbon paste electrodes (CPEs) for ascorbic acid (AA) sensing has been studied in detail in this article. Cyclic voltammetry studies indicated improved electrochemical properties of the Au/EPA composites, demonstrating the occurrence of efficient electron/ charge transfer between the Au and the EPA. Experimental tests shows that there is a linear relationship between the concentration of added AA and the response current for the CPE modified with Au/EPA sensor to the concentration of AA in the range of 0.05-0.75 mM (R 2 = 0.996, n = 15). The detection limit and the sensitivity of the Au/EPA-CPE AA sensors were 2.75 μM at a signal to noise ratio (S/N) of 3, and 21.7 mA·mM -1 , respectively.

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“…Trace level measurement of DA has been a long-standing goal since the concentration change is associated with various diseases and disorders, such as Parkinson's disease, Alzheimer's disease, Huntington's disease, epilepsy, pheochromocytoma and neuro-blastoma [8]. It is important to monitor DA sensitively and selectively not only for biomedical chemistry and neurochemistry research but also for diagnostic and pathological purpose [9]. Different methods have been used for the determination of DA such as spectrophotometry [10], fluorescence method [11,12], electrochemiluminescence [13,14], high performance liquid chromatography (HPLC) [15,16], capillary electrophoresis [17], molecular imprinting polymer [18][19][20], complementary metal oxide semiconductor (CMOS) capacitive sensors [21,22], photoelectrochemical sensors [23,24] and electrochemical method [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Porous polydopamine and para-aminobenzoic acid complex membrane formed by electrochemical codeposition/degradation

Hong-fei¹,

Li²,

He³

2017

Proceedings of the 2017 6th International Conference on Measurement, Instrumentation and Automation (ICMIA 2017)

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Abstract. Electropolymerization is a useful method to modify electrode for improving selectivity, sensitivity and strong adherence to electrode surface. In this paper, we prepared polydopamine (PDA), poly-para-aminobenzoic acid (PABA) and PDA/PABA composite membrane on a glassy carbon electrode (GCE) using cyclic voltammetry. The composite membrane was electrochemically degraded to form a porous polydopamine membrane (PPM) on the GCE. The porosity of the PPM was examined using anionic redox couple of ferricyanide/ferrocyanide. PPM modified electrodes were able to give better voltammetric responses for dopamine (DA) oxidation than the single PDA and PABA modified ones.

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A facile electrochemical sensor based on reduced graphene oxide and Au nanoplates modified glassy carbon electrode for simultaneous detection of ascorbic acid, dopamine and uric acid

Cited by 416 publications

References 51 publications

Porous Para-aminobenzoic Acid Membrane Prepared by Electrochemical Method and Its Application in Voltammetric Determination of Dopamine

Porous Para-aminobenzoic Acid Membrane Prepared by Electrochemical Method and Its Application in Voltammetric Determination of Dopamine

Novel ascorbic acid sensor prepared from gold/aniline-pentamer-based electroactive polyamide composites

Porous polydopamine and para-aminobenzoic acid complex membrane formed by electrochemical codeposition/degradation

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