Carbon nanohorns/poly(glycine) modified glassy carbon electrode: Preparation, characterization and simultaneous electrochemical determination of uric acid, dopamine and ascorbic acid

Zhang, Guangli; He, Ping; Feng, Wanru; Ding, Shuangshuang; Chen, Jingchao; Li, Lian; He, Huichao; Zhang, Susu; Dong, Faqin

doi:10.1016/j.jelechem.2015.11.035

Cited by 76 publications

(22 citation statements)

References 42 publications

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“…Similarly, carbon nano‐horns were deposited on the GCE, later on, glycine was electropolymerized to get CNHs/PGLY/GCE. Polyglycine produced synergistic effect along with carbon nano‐horns and well‐separated peaks of targeted analytes were observed .…”

Section: Comparison Of the Modified Electrodes For Simultaneous Sensimentioning

confidence: 99%

Modified Electrodes for Selective Voltammetric Detection of Biomolecules

2018

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Electrochemical sensors for selective analysis of biomolecules got tremendous attention due to their better sensitivity and construction possibility of the portable cost‐effective devices. The individual or simultaneous sensing of ascorbic acid (AA), dopamine (DA), and uric acid (UA) is challenging due to their close electrooxidation and co‐existing. Recent years, substantial progress is made to develop electrode with smart materials to overcome the issue related to simultaneous sensing. This review is comparatively consolidating the work was done in fabrication of electrochemical sensors for the simultaneous sensing of AA, DA and UA. The various modification materials such as graphene, CNTs, conductive polymers and the ionic liquids characteristics are concisely described with their figure of merits. In the end, the critical analysis, future prospects, and challenges in commercialization are described.

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Section: Comparison Of the Modified Electrodes For Simultaneous Sensimentioning

confidence: 99%

Modified Electrodes for Selective Voltammetric Detection of Biomolecules

2018

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“…Uric acid is the oxidation by‐product of the purine metabolism . Abnormal level of uric acid in the human body fluid is the indication of some severe diseases such as hyperuricemia, gout and the Lesch‐Nyhan syndrome . L‐tyrosine is a crucial amino acid and acting as a precursor for dopamine, epinephrine, and norepinephrine.…”

Section: Introductionmentioning

confidence: 99%

A New Approach of Controlled Single Step In Situ Fabrication of Graphene Composite Sensor for Simultaneous Sensing of Small Biomolecules in Human Urine

2019

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A new approach is introduced to develop a nanostructured pseudo-cup-shaped 3D graphene composite (s3D-GR) on the graphite pencil electrode (GPE) surface for simultaneous sensitive sensing of small biomolecules. A pseudo-cup-shaped 3D architecture of graphene was achieved by instant composition controlled interaction of the methylene blue (MTLB) with graphene oxide. The 3D graphene architecture appeared with inner, outer, upper walls and the pseudo-cup-shaped bottom. The SEM images revealed the formation of 3D graphene network on graphite pencil electrode. 3D pseudo-cup-shaped wrinkled graphene displayed a huge electroactive surface area (2.353 cm 2 ) compared to 2D graphene (0.141 cm 2 ). The 3D graphene composite contained more electroactive sites and improved surface kinetics. The fabricated electrode surface was comprehensively evaluated by field emission scanning electron microscopy (FE-SEM), Raman spectroscopy, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). The s3D-MTLB-GR/GPE was exceptionally sensitive for dopamine (DA), uric acid (UA), l-tyrosine (Tyr) and displayed low limit of detection (LOD) 15, 27, 247 nM, respectively. The peak separation between DA-UA, UA-Tyr, and DA-Tyr were observed 140 mV, 319 mV, and 459 mV, respectively. Sensor behaved well in the presence of potential interferences and real urine sample. The pseudo-cup-shaped 3D graphene sensor can be proved a valuable tool for the simultaneous sensing of small biomolecules.[a] Dr.

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“…[23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Glassy carbon electrodes (GCEs) were modified with sulfonated graphene 23 or with reduced graphene oxide. 24,25 There are reports on the use of GCE modified with various composite materials: a SiO 2 -coated graphene oxide and molecularly imprinted polymers, 26 nanocomposite with carbon nanotubes, [27][28][29] NiFe 2 O 4 magnetic nanoparticles decorated with multiwall carbon nanotubes, 30 with a carbon nanohorns/poly(glycine) composite, 31 with poly(o-methoxyaniline)-gold (POMA-Au) nanocomposite, 32 with a complex of gold nanoparticles and multiwall carbon nanotubes. 33 GCE modified with a combination of fullerene (C 60 )-functionalized carbon nanotubes and ionic liquid 1-butyl-3methylimidazolium tetrafluoroborate was used to determine several catecholamine's: nor epinephrine, isoprenaline and dopamine.…”

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confidence: 99%