One-pot synthesis of reduced graphene oxide/zinc sulfide nanocomposite at room temperature for simultaneous determination of ascorbic acid, dopamine and uric acid

Yang, Yingzhen

doi:10.1016/j.snb.2015.06.150

Cited by 70 publications

(19 citation statements)

References 60 publications

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“…The results reveal that below than 100 mV/s, the anodic peak current (I pa ) is directly proportional to the scan rate (V) (R 2 = 0.984, Figure 4 C) and the I pa increases linearly with the square root of scan rate (V 1/2 ) (R 2 = 0.991, Figure 4 D) above than 100 mV/s. Thus, these results indicate that the UA oxidation on PrGO electrode exhibits a process of diffusion-controlled at high scan rates and an adsorption-controlled process occurred at low scan rates [ 40 , 41 , 42 ].…”

Section: Resultsmentioning

confidence: 97%

Development of a PrGO-Modified Electrode for Uric Acid Determination in the Presence of Ascorbic Acid by an Electrochemical Technique

Tukimin

Abdullah

Sulaiman

2017

Sensors

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An attractive electrochemical sensor of poly(3,4-ethylenedioxythiophene)/reduced graphene oxide electrode (PrGO) was developed for an electrochemical technique for uric acid (UA) detection in the presence of ascorbic acid (AA). PrGO composite film showed an improved electrocatalytic activity towards UA oxidation in pH 6.0 (0.1 M PBS). The PrGO composite exhibited a high current signal and low charge transfer resistance (Rct) compared to a reduced graphene oxide (rGO) electrode or a bare glassy carbon electrode (GCE). The limit of detection and sensitivity of PrGO for the detection of UA are 0.19 μM (S/N = 3) and 0.01 μA/μM, respectively, in the range of 1–300 μM of UA.

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Section: Resultsmentioning

confidence: 97%

Development of a PrGO-Modified Electrode for Uric Acid Determination in the Presence of Ascorbic Acid by an Electrochemical Technique

Tukimin

Abdullah

Sulaiman

2017

Sensors

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“…Further, since the DA molecule contains an aromatic ring, a well-ordered organic layer was formed between the graphene and the aromatic ring of DA through π-π stacking interactions, which resulted in strong adsorption; therefor, the slope did not change within this concentration range. Compared with the flat graphene composite electrode, the sensitivity of the graphene/Ta wire electrode reached the same level, and the detection limits of DA, UA, and Trp are very advantageous 5 , 26 , 56 .…”

Section: Resultsmentioning

confidence: 99%

CVD graphene as an electrochemical sensing platform for simultaneous detection of biomolecules

Wang

Gao

et al. 2017

Sci Rep

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The development of electrochemical biosensors for the simultaneous detection of ascorbic acid (AA), dopamine (DA), uric acid (UA), tryptophan (Trp), and nitrite () in human serum is reported in this work. Free-standing graphene nanosheets were fabricated on Ta wire using the chemical vapor deposition (CVD) method. CVD graphene, which here served as a sensing platform, provided a highly sensitive and selective option, with detection limits of AA, DA, UA, Trp, and of 1.58, 0.06, 0.09, 0.10, and 6.45 μM (S/N = 3), respectively. The high selectivity of the electrode is here explained by a relationship between the bandgap energy of analyte and the Fermi level of graphene. The high sensitivity in the oxidation current was determined by analyzing the influence of the high surface area and chemical structure of free-standing graphene nanosheets on analyte adsorption capacity. This finding strongly indicates that the CVD graphene electrode can be used as a biosensor to detect five analytes in human serum.

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“…For the NGO-Mn 3 O 4 composite, similar peaks to those appeared in the diffraction pattern for Mn 3 O 4 [48] revealed the formation of Mn 3 O 4 . The diffraction peak at 25.6 • indicated a partial reduction of graphene oxide [49,50].…”

Section: Materials Characterizationmentioning

confidence: 99%

Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide

et al. 2019

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Sodium hydroxide-modified graphene oxide was used as manganese oxides support for the preparation of nanocomposites via a one-pot preparation route for the degradation of Reactive Black 5. The nanocomposites were characterized for their structure by X-ray diffraction, for their textural properties by Nitrogen adsorption, and for their surface chemistry by Fourier transform infrared spectroscopy, potentiometric titration, and thermal analysis measurements. The nanocomposites prepared showed to possess high activity for the degradation/oxidation of Reactive Black 5 at ambient conditions, without light irradiation, which was higher than that of the precursors manganese oxides and can be attributed to the synergistic effect of the manganese oxides and the modified graphene oxide.

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One-pot synthesis of reduced graphene oxide/zinc sulfide nanocomposite at room temperature for simultaneous determination of ascorbic acid, dopamine and uric acid

Cited by 70 publications

References 60 publications

Development of a PrGO-Modified Electrode for Uric Acid Determination in the Presence of Ascorbic Acid by an Electrochemical Technique

Development of a PrGO-Modified Electrode for Uric Acid Determination in the Presence of Ascorbic Acid by an Electrochemical Technique

CVD graphene as an electrochemical sensing platform for simultaneous detection of biomolecules

Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide

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