Plasma-assisted synthesis of carbon fibers/ZnO core–shell hybrids on carbon fiber templates for detection of ascorbic acid and uric acid

Liu, Hongying; Gu, Chunchuan; Hou, Chao; Yin, Zheng‐Zhi; Fan, Kai; Zhang, Mingzhen

doi:10.1016/j.snb.2015.11.027

Cited by 33 publications

(15 citation statements)

References 32 publications

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“…The electrochemical properties of the bare GCE and CQDs/GCE were characterized by CV using 20 mM Fe(CN) 6 3-/4containing 0.1 M KCl as the electrochemical probe. As can be seen from Figure 2(a), compared with bare GCE (curve A), the peak current of CQDs/GCE (curve B) increased obviously and the interspike interval was decreased.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

“…These results suggest that the prepared CQDs have good properties. The EIS of different electrodes was measured under the conditions of 10 -2~1 0 5 Hz, 0.24 V bias potential, and 5 V amplitude in 20 mM Fe(CN) 6 3-/4containing 0.1 M KCl. The direct part of the figure represents the diffusion process, and the diameter of the semicircle shows the resistance of the electron transfer.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

“…The abnormal concentration of AA can be related to various kinds of diseases including scurvy, mental disorder, cancer, cold, AIDS, and digestive disorder [1][2][3][4][5]. In addition, AA has been found to participate in a lot of life processes, such as cell division, iron absorption, acceleration of collagen synthesis, melanogenesis inhibition, and metabolism [6][7][8][9]. Since AA is so important, it is of great significance to develop a rapid, sensitive analytical method for the detection of AA.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

et al. 2019

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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.

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Section: Electrochemical Characterizationmentioning

confidence: 99%

Section: Electrochemical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

et al. 2019

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“…16−19 Among these, ZnO and its nanocomposites, due to their unique mechanical characteristics and nontoxic properties, have received much attention. 19,20 The isoelectric point (IEP) of ZnO is high (9.5) and provides positively charged surfaces for the adsorption of relatively negatively charged enzymes/antibodies (IEP ≃ 4.5). 21,22 Moreover, ZnO has good chemical stability and biocompatibility.…”

Section: ■ Introductionmentioning

confidence: 99%

ZnO Nanorod Integrated Flexible Carbon Fibers for Sweat Cortisol Detection

Madhu

Anthuuvan

Ramasamy

et al. 2020

ACS Appl. Electron. Mater.

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Sensors fabricated on fabrics provide an elevated ease of use for wearable sensors. Such sensors will play a critical role in detecting the elevations in the concentrations of biochemical markers in human sweat. The ability of making such measurements is becoming an important tool for non-invasive and real-time health monitoring. We present a yarn-based flexible and superwettable electrochemical immunosensing strategy for highly selective and sensitive detection of cortisol in sweat. ZnO nanorods (ZnONRs)-coated flexible carbon yarns were prepared by using a hydrothermal method for immobilizing specific anti-cortisol antibodies and used as an immunosensing platform for detecting sweat cortisol levels. The morphology, elemental composition, crystallinity, and specific surface area were analyzed by using analytical techniques such as transmission electron microscopy (TEM), field emission scanning electron microscopy coupled energy-dispersive X-ray analysis (FE-SEM/EDS), X-ray diffraction (XRD), fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, and Brunauer–Emmett–Teller (BET) analysis. The ZnONRs integrated carbon yarns showed excellent mechanical stability and superwettable properties. The immunosensor exhibited a wide linear detection range from 1 fg/mL to 1 μg/mL. The detection limits of the immunosensor were calculated to be between 0.45 and 0.098 fg/mL by using CV and DPV techniques, respectively. Additionally, cell viability studies were performed to investigate the biocompatibility and cytotoxicity of this carbon yarn ZnO sensing platform. The immunosensor was applied to measure the cortisol concentration in human sweat samples, and the outcomes were validated by using a chemiluminescent immunoassay system.

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“…Toxic and highly hazardous chemicals such as nitrophenols [ 10 , 11 ], ammonia [ 12 ], CO [ 13 ], hydrazines [ 14 , 15 ], nitroanilines [ 16 , 17 , 18 ], hydrogen sulfide [ 19 ], ethanolamine [ 20 ], picric acid [ 21 ], ethyl acetate [ 22 ], ethanol [ 23 ], synthetic antioxidants and dyes in food articles [ 24 , 25 ], some bio-molecules like glucose [ 26 , 27 , 28 ], uric acid [ 29 , 30 ], urea [ 31 , 32 ], aspartic acid [ 33 ], dopamine [ 34 ], pH sensors [ 35 ], etc. have been detected and analyzed through electrochemical sensing techniques using ZnO modified electrochemical sensors.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Highly Sensitive Acetone Chemical Sensor Based on ZnO Nanoballs

et al. 2017

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Highly sensitive acetone chemical sensor was fabricated using ZnO nanoballs modified silver electrode. A low temperature, facile, template-free hydrothermal technique was adopted to synthesize the ZnO nanoballs with an average diameter of 80 ± 10 nm. The XRD and UV-Vis. studies confirmed the excellent crystallinity and optical properties of the synthesized ZnO nanoballs. The electrochemical sensing performance of the ZnO nanoballs modified AgE towards the detection of acetone was executed by simple current–voltage (I–V) characteristics. The sensitivity value of ∼472.33 μA·mM−1·cm−2 and linear dynamic range (LDR) of 0.5 mM–3.0 mM with a correlation coefficient (R2) of 0.97064 were obtained from the calibration graph. Experimental limit of detection (LOD) for ZnO nanoballs modified AgE was found to be 0.5 mM.

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Plasma-assisted synthesis of carbon fibers/ZnO core–shell hybrids on carbon fiber templates for detection of ascorbic acid and uric acid

Cited by 33 publications

References 32 publications

Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

ZnO Nanorod Integrated Flexible Carbon Fibers for Sweat Cortisol Detection

Fabrication and Characterization of Highly Sensitive Acetone Chemical Sensor Based on ZnO Nanoballs

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