Graphene/SnO 2 nanocomposite-modified electrode for electrochemical detection of dopamine

Nurzulaikha, R.; Lim, Hong Ngee; Harrison, I. R.; Lim, Siew Shee; Pandikumar, Alagarsamy; Huang, Nay Ming; Lim, Su Pei; Thien, Gregory Soon How; Yusoff, Norazriena; Ibrahim, I. A.

doi:10.1016/j.sbsr.2015.06.002

Cited by 79 publications

(32 citation statements)

References 51 publications

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“…27 In addition to the characteristic peaks for MnFe 2 O 4 and Au, a slight hump around 2θ value of 26.5 • (Figure 3(b-d)) was observed due to the presence of rGO in the nanocomposites. 28 Thus the XRD results These d-spacing values and the obtained crystal planes from XRD data were found to be in good agreement with the SAED data.…”

Section: Xrd Analyses Of Edas/rgo-mnfe 2 O 4 @Au Nanocompositesupporting

confidence: 79%

Gold nanoparticles decorated silicate sol-gel matrix embedded reduced graphene oxide and manganese ferrite nanocomposite-materials-modified electrode for glucose sensor application

2019

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Gold nanoparticles decorated on silicate sol-gel matrix embedded manganese ferrite (MnFe 2 O 4 )reduced graphene oxide (rGO) nanocomposites were synthesized through a facile chemical method. The prepared samples were characterized by using powder X-ray diffraction (XRD), UV-vis absorption spectroscopy (UV-VIS), energy-dispersive X-ray spectroscopy (EDX), high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) analyses. The Au nanostructures on rGO-MnFe 2 O 4 improved the electrocatalytic activity of the rGO-MnFe 2 O 4 @Au composite-materials-modified electrodes towards glucose oxidation. Cyclic voltammetry and amperometric methods were used to evaluate the electrocatalytic activity of the rGO-MnFe 2 O 4 @Au modified electrodes towards glucose oxidation in 0.1 M NaOH at a less-positive potential (0.2 V) in the absence of any enzyme or redox mediator. The nanocompositemodified electrode (GCE/EDAS/rGO-MnFe 2 O 4 @Au) was successfully used for the amperometric sensing of glucose and the experimental detection limit of 10 μM glucose was observed. The common interfering agents did not interfere with the detection of glucose. The present sensor showed good stability, reproducibility, and selectivity. The nanocomposite-modified electrode was successfully used for the determination of glucose in the urine sample.

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Section: Xrd Analyses Of Edas/rgo-mnfe 2 O 4 @Au Nanocompositesupporting

confidence: 79%

Gold nanoparticles decorated silicate sol-gel matrix embedded reduced graphene oxide and manganese ferrite nanocomposite-materials-modified electrode for glucose sensor application

2019

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“…On comparing current response of the electrodes modified from the composites obtained in the two different methods, it can be seen that the microwave method having the lowest Sn content gave higher current response than the hydrothermally obtained nanocomposite. rGO which has demonstrated to be an efficient material for electron transport as shown in Figure a could be remodelled with the SnO 2 /rGOI produced by microwave method for increased current . The observed change may be due to large surface area and high conductivity of the composite.…”

Section: Resultsmentioning

confidence: 99%

Thermal Analysis, Morphology and Electrochemical Application of Graphene Decorated SnO₂ Nanoparticles

Elemike

Maumau

Onwudiwe

2019

Macromolecular Symposia

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In this present investigation, reduced graphene oxide (rGO)–SnO2 nanocomposites were synthesized via hydrothermal and microwave methods. The nanocomposites were characterized using Fourier transform infrared spectra (FTIR), Scanning electron microscopy (SEM), Thermogravimetric analysis (TGA), and cyclic voltammetric (CV) methods.The SEM images demonstrated different morphologies and the TGA equally showed different thermal behavior of the nanocomposites. Some conditions such as concentrations and synthetic procedures were varied in order to optimize the nanocomposites formulation and devise the means for excellent product applications. The results of the research showed that the nanocomposites have higher activity under microwave assisted conditions.

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“…Owing to its unique electronic, mechanical, and thermal properties, graphene has been intensively employed as modification materials on the surface of different electrodes. Up to now, many modified electrodes supported by graphene oxide, such as graphene-metal oxide nanocomposite, GOcarbon dot composite, GO-bimetallic nanoclusters, layer-bylayer assembled multilayer films of GO/metal nanoparticles, GO/polymer nanosheets, and GO/hybrid polymer composite [64][65][66][67][68][69][70][71][72][73][74], have been successfully prepared for the electrochemical detection of dopamine and have shown their unique properties. Even so, the development of novel graphene combined with AuNPs nanocomposite for the electrochemical determination of dopamine remains interesting and challenging.…”

Section: Graphene Oxide (Go) Modified Electrode For Dopamine Sensingmentioning

confidence: 99%

Graphene Oxide Modified Electrodes for Dopamine Sensing

Khan

2017

Journal of Nanomaterials

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Dopamine (DA) is one of the most important catecholamine neurotransmitters that plays an important role in the central nervous, renal, hormonal, and cardiovascular systems. Since its discovery, tremendous effort has been made and various techniques have been developed for the DA detection. Recently, graphene-based materials have attracted a tremendous amount of attention due to their high sensitivity and rapid response towards effective detection of DA. This review focuses on current advances of graphene-based materials for DA detection based on recent articles published in the last five years.

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Graphene/SnO 2 nanocomposite-modified electrode for electrochemical detection of dopamine

Cited by 79 publications

References 51 publications

Gold nanoparticles decorated silicate sol-gel matrix embedded reduced graphene oxide and manganese ferrite nanocomposite-materials-modified electrode for glucose sensor application

Gold nanoparticles decorated silicate sol-gel matrix embedded reduced graphene oxide and manganese ferrite nanocomposite-materials-modified electrode for glucose sensor application

Thermal Analysis, Morphology and Electrochemical Application of Graphene Decorated SnO₂ Nanoparticles

Graphene Oxide Modified Electrodes for Dopamine Sensing

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Graphene/SnO 2 nanocomposite-modified electrode for electrochemical detection of dopamine

Cited by 79 publications

References 51 publications

Gold nanoparticles decorated silicate sol-gel matrix embedded reduced graphene oxide and manganese ferrite nanocomposite-materials-modified electrode for glucose sensor application

Gold nanoparticles decorated silicate sol-gel matrix embedded reduced graphene oxide and manganese ferrite nanocomposite-materials-modified electrode for glucose sensor application

Thermal Analysis, Morphology and Electrochemical Application of Graphene Decorated SnO2 Nanoparticles

Graphene Oxide Modified Electrodes for Dopamine Sensing

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Thermal Analysis, Morphology and Electrochemical Application of Graphene Decorated SnO₂ Nanoparticles