Multiwalled carbon nanotube-based nanosensor for ultrasensitive detection of uric acid, dopamine, and ascorbic acid

Şavk, Aysun; Özdil, Buse; Demirkan, Buse; Nas, Mehmet Salih; Çalımlı, Mehmet Harbi; Alma, Mehmet Hakkı; Inamuddin, .; Asiri, Abdullah M.; Şen, Fatih

doi:10.1016/j.msec.2019.01.113

Cited by 117 publications

(35 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As shown in Figure 6(b), the long-term durability of CQDs/GCE was measured by chronoamperometry [5,59] under the conditions of 2000 s and 0 V; the current of the sensor decays rapidly at the beginning, which may be due to the rapid adsorption of a large number of AA on the sensor surface that makes the number of active sites reduced quickly. After that, the adsorption of AA and the release of active sites basically reached a balance, so the current of the sensor tended to be stable [19]. Since the current decay only occurs in the first few seconds, and then remains stable for a long time, it proves that the sensor has good stability.…”

Section: Effect Of Scanmentioning

confidence: 92%

“…Since the oxidation peak potential of DA and UA is close to that of AA, they often interfere with the electrochemical detection of AA. To solve this problem, researchers have used a variety of methods, among which the electrochemical sensor method [19][20][21][22][23][24][25] exhibits excellent anti-interference effect, which can effectively separate the peaks of AA, UA, and DA. However, there are few reports on the application of CQD modified electrode in the electrochemical detection of AA.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

et al. 2019

View full text Add to dashboard Cite

In this work, carbon quantum dots (CQDs) were synthesized by microwave irradiation and were electropolymerized on glassy carbon electrode (GCE) to establish an electrochemical sensor for the selective detection of ascorbic acid (AA). Electrochemical behaviors of the prepared sensor were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Herein, two wide linear responses were obtained in ranges of 0.01-3 mM and 4-12 mM with a low detection limit of 10 μM to AA. High sensitivities (44.13 μA-1 μM-1 cm-2, 9.66 μA-1 μM-1 cm-2, respectively) corresponding to the linear ranges were also achieved. In addition, the electrochemical sensor exhibited good selectivity and robust anti-interference ability toward AA in the presence of dopamine (DA) and uric acid (UA). These results showed that this sensor can be used as a promising tool to detect AA in real complex systems.

show abstract

Section: Effect Of Scanmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

et al. 2019

View full text Add to dashboard Cite

show abstract

“…On the other side, nonenzymatic sensors make use of new materials to overcome the limitations of biological receptors in terms of cost and stability [ 22 ]. A multitude of attempts have pursued this approach for ascorbic acid determination, for example using carbon-supported PdNi nanoparticles (NPs) [ 23 ], carbon nanoplatelets derived from ground cherry husks [ 24 ], silver NPs grafted graphene/polyaniline nanocomposites [ 25 ], molybdophosphate films [ 26 ], graphene oxide/multi-walled carbon nanotubes/gold nanorods combinations [ 27 ], ZiNi nanoalloy-modified carbon nanotubes [ 28 ], or TiO 2 /reduced graphene oxide nanocomposites [ 29 ]. Some sensors provide an added value with the possibility of performing the simultaneous detection of various analytes that typically show overlapping oxidation potentials [ 30 – 32 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical detection of ascorbic acid in artificial sweat using a flexible alginate/CuO-modified electrode

et al. 2020

View full text Add to dashboard Cite

A flexible sensor is presented for electrochemical detection of ascorbic acid in sweat based on single-step modified gold microelectrodes. The modification consists of electrodeposition of alginate membrane with trapped CuO nanoparticles. The electrodes are fabricated at a thin polyimide support and the soft nature of the membrane can withstand mechanical stress beyond requirements for skin monitoring. After characterization of the membrane via optical and scanning electron microscopy and cyclic voltammetry, the oxidative properties of CuO are exploited toward ascorbic acid for amperometric measurement at micromolar levels in neutral buffer and acidic artificial sweat, at ultralow applied potential (− 5 mV vs. Au pseudo-reference electrode). Alternatively, measurement of the horizontal shift of redox peaks by cyclic voltammetry is also possible. Obtaining a limit of detection of 1.97 μM, sensitivity of 0.103 V log (μM)−1 of peak shift, and linear range of 10–150 μM, the effect of possible interfering species present in sweat is minimized, with no observable cross-reaction, thus maintaining a high degree of selectivity despite the absence of enzymes in the fabrication scheme. With a lateral flow approach for sample delivery, repeated measurements show recovery in few seconds, with relative standard deviation of about 20%, which can serve to detect increased loss or absence of vitamin, and yet be improved in future by optimized device designs. This sensor is envisioned as a promising component of wearable devices for e.g. non-invasive monitoring of micronutrient loss through sweat, comprising features of light weight, low cost, and easy fabrication needed for such application.

show abstract

“…Recently, Atta et al demonstrated crown ether and polyhydroquinone modified carbon nanotubes for sensing AA with a limit of detection (LOD) of around 3.32 nM [17]. By microwave irradiation process Savk et al, modified MWCNT with ZnNi nanoparticles, which was demonstrated for sensing of ascorbic acid (AA), uric acid (UA), and dopamine (DA) and for AA they found a linear response in the concentration range 0.3 to 1.1 mM [18].…”

Section: Introductionmentioning

confidence: 99%

Confinement Catalysis of Non‐covalently Functionalized Carbon Nanotube in Ascorbic Acid Sensing

et al. 2020

View full text Add to dashboard Cite

Developing accurate analytical quantification of ascorbic acid (AA) is an important area of contemporary research. Glassy carbon electrode was modified using multiwalled carbon nanotubes (MWCNT) followed by adsorption of 1‐amino 2‐naphthol ( 1N2OH) in acetonitrile medium. Thus, obtained modified electrode was successfully used for sensing AA in real samples. The coulombic interaction between oxidized 1N2OH and AA channels the electron tunneling during AA oxidation, which mitigates the fouling of electrode by the products of AA oxidation. In comparison to MWCNT, the modified electrode senses AA at lower overpotential with good selectivity. The electrode senses AA at a distinct potential even in the mixture of AA, dopamine, and uric acid.

show abstract

Multiwalled carbon nanotube-based nanosensor for ultrasensitive detection of uric acid, dopamine, and ascorbic acid

Cited by 117 publications

References 43 publications

Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

Electrochemical detection of ascorbic acid in artificial sweat using a flexible alginate/CuO-modified electrode

Confinement Catalysis of Non‐covalently Functionalized Carbon Nanotube in Ascorbic Acid Sensing

Contact Info

Product

Resources

About