Simultaneous determination of dopamine and uric acid in the presence of ascorbic acid using Pt nanoparticles supported on reduced graphene oxide

Xu, Tian-Qi; Zhang, Qianli; Zheng, Jie-Ning; Lv, Zhang-Ying; Wei, Jie; Wang, Ai‐Jun; Feng, Jiu‐Ju

doi:10.1016/j.electacta.2013.10.147

Cited by 231 publications

(90 citation statements)

References 32 publications

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“…Nevertheless, its surplus will induce toxic metabolite accumulation, causing acute hepatic necrosis [7]. Additionally, AA is a vital vitamin in human diet and very popular in foodstuffs for its antioxidant property, which can be applied to prevent and treat common cold, mental illness, infertility, cancer, and AIDS [8,9].…”

Section: Introductionmentioning

confidence: 99%

A glassy carbon electrode modified with porous gold nanosheets for simultaneous determination of dopamine and acetaminophen

et al. 2014

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Porous gold nanosheets modified glassy carbon electrode (GCE) was facilely prepared by one-step electrodeposition, using N-methylimidazole as a growth-directing agent. The porous gold nanosheets modified GCE was characterized by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction spectroscopy. The modified electrode displayed improved sensitivity for individual and simultaneous differential pulse voltammetric determination of dopamine (DA; at 180 mV) and acetaminophen (AC; at 450 mV vs. Ag/AgCl) even in the presence of ascorbic acid. The oxidation peak currents linearly increased with the concentrations of DA and AC in the ranges from 2.0 to 298.0 μM and 3.0 to 320.0 μM, respectively, and the detection limits are 0.28 μM for DA and 0.23 μM for AC. The relative standard deviations (n=20) are 1.5 % for DA and 0.4 % for AC.

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Section: Introductionmentioning

confidence: 99%

A glassy carbon electrode modified with porous gold nanosheets for simultaneous determination of dopamine and acetaminophen

et al. 2014

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“…This is due to the electrostactic attractive interaction between positive charged DA and negative charged RGO/ZnTPP. On the other hand, interference species were repuled due to the electrostatic repulsion [56,57]. It is a good evidence for the selectivity of RGO/Zn-TPP nanocomposite modified electrode for DA detection.…”

Section: à2mentioning

confidence: 83%

Reduced Graphene Oxide Non‐covalent Functionalized with Zinc Tetra Phenyl Porphyrin Nanocomposite for Electrochemical Detection of Dopamine in Human Serum and Rat Brain Samples

et al. 2016

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We described the use of a nanocomposite consisting of reduced graphene oxide and zinc tetraphenylporphyrin (RGO/Zn‐TPP) for electrochemical sensing of dopamine (DA). The surface of RGO was homogeneously functionalized with Zn‐TPP via non‐covalent π‐π interaction. The nanocomposite was characterized by scanning electron microscopy, UV‐Vis spectrometry, nuclear magnetic resonance spectroscopy and electrochemical impedance spectroscopy. The electroanalysis behavior of the nanocomposite was studied by cyclic voltammetry and amperometry. The excellent electrocatalytic activity is found for oxidation of DA, best at working voltage of 0.214 V (vs. Ag/AgCl) and linear response range of 0.04–238.8 μM. The sensitivity and detection limit were of 0.665 μA µM−1 cm−2 and 3 nM, respectrively. The electrode is well reproducible, stable, and represents a viable platform for the analysis of DA in DA injection, human serum and rat brain sample.

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“…Therefore, the determination of AA and UA in analytical determination and diagnostic research is vital [7]. And to date, various electrochemical methods were developed in ISSN 1394 -2506 detection of AA and UA utilizing different types of electrodes for example one-dimensional MgO biosensor [8], TiO 2 nanoparticles MCPE [9], Pt nanoparticles supported graphene oxide [10] and reduced grapheme oxide modified electrode [11]. Although there are several research works reported on the determination of AA and UA using mesoporous silica mainly type MCM-41 [12,13], however, to the best of our knowledge, electrochemical detection of AA and UA using, SBA-15 and SBA-16, has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Silica Electrochemical Sensors for the Detection of Ascorbic Acid and Uric Acid

Hassan

Rahman

Jalil

2016

MJAS

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Mesoporous silica of SBA-15 and SBA-16 were successfully synthesized via the surfactant templating technique using tetraorthosilicate (TEOS) as the silica source and both surfactants, pluronic P123 and F127. Two different modified carbon paste electrodes (MCPE) were fabricated; SBA-15/MCPE and SBA-16/MCPE in compared to unmodified electrode, carbon paste electrode (CPE), for ascorbic acid (AA) and uric acid (UA) determination. Due to the unique properties of mesoporous silica materials, the MCPE fabricated exhibits greater surface enhancement effect, offers better adsorption and increases the response signals of AA and UA towards both MCPEs compared to CPE. The electrochemical behaviours of AA and UA were investigated using cyclic voltammetry. Finally, the electrochemical methods were successfully applied in detection of AA and UA.Keywords: mesoporous silica, electrochemical sensor, SBA-15, SBA-16, synthesis, electrochemical methods AbstrakMesoporus silika SBA-15 dan SBA-16 telah disintesis dengan jayanya melalui teknik templat surfaktan menggunakan tetraortosilikat (TEOS) sebagai sumber silika dan kedua-dua surfaktan, Pluronic P123 dan F127. Dua elektrod pes karbon yang dimodifikasi (MCPE) yang berbeza, SBA-15/MCPE dan SBA-16/MCPE telah dihasilkan dan dibandingkan dengan elektrod pes karbon yang tidak dimodifikasikan (CPE), untuk penentuan asid askorbik (AA) dan asid urik (UA). Dengan sifat-sifat unik bahan silika, MCPE yang telah difabrikasi mempamerkan peningkatan efek permukaan yang baik, penjerapan yang lebih bagus, dan peningkatan signal respon AA dan UA terhadap kedua-dua MCPE berbanding CPE. Perlakuan elektrokimia AA dan UA telah dikenalpasti dengan menggunakan alat voltametri berkitar. Akhirnya, kaedah elektrokimia telah berjaya diaplikasikan dalam pengesanan AA dan UA.

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Simultaneous determination of dopamine and uric acid in the presence of ascorbic acid using Pt nanoparticles supported on reduced graphene oxide

Cited by 231 publications

References 32 publications

A glassy carbon electrode modified with porous gold nanosheets for simultaneous determination of dopamine and acetaminophen

A glassy carbon electrode modified with porous gold nanosheets for simultaneous determination of dopamine and acetaminophen

Reduced Graphene Oxide Non‐covalent Functionalized with Zinc Tetra Phenyl Porphyrin Nanocomposite for Electrochemical Detection of Dopamine in Human Serum and Rat Brain Samples

Mesoporous Silica Electrochemical Sensors for the Detection of Ascorbic Acid and Uric Acid

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