A molybdenum disulfide/nickel ferrite-modified voltammetric sensing platform for ultra-sensitive determination of clenbuterol under the presence of an external magnetic field

Manh, T. V.; Ong, Van Hoang; Pham, Tuyet Nhung; Hoa, Nguyen Quang; Nguyễn, Thị Lan; Pham, Thang; Vinh, Le Khanh; Trinh, Pham Thi Nhat; Thanh, Doan Thi Ngoc; Tung, Le Minh; Le, Anh-Tuan

doi:10.1039/d3ra01136d

Cited by 8 publications

(3 citation statements)

References 58 publications

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“…Furthermore, there were no extra peaks corresponding to impurity phases, confirming all proposed MoS 2 samples owned good crystallinity and high purity. 12,18,19 Besides, the decrease in intensity of high-indexed diffraction peaks showed the short-range structural distribution of prepared MoS 2 samples, particularly for MoS 2 -2 and MoS 2 -3 samples.…”

Section: Resultsmentioning

confidence: 94%

Exploring the Impact of Structural and Physical Properties of Layered Molybdenum Disulfide on Electrochemical Characteristics and The Sensitive Response to Chloramphenicol Detection

Pham,

Ong,

Tien

et al. 2023

J. Electrochem. Soc.

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This report focuses on evaluating the influence of structural and physical properties of MoS2 material on electrochemical behaviors as well as sensing performance toward the detection of targeted chloramphenicol (CAP) molecules. The various MoS2 samples were fabricated via a simple ultrasonication route at different experimental times. Through using X-ray diffraction (XRD), Raman, and scanning electron microscopy (SEM), structural and chemophysical characterizations were analyzed and discussed. Furthermore, from electrochemical measurements such as CV, EIS, DPV, and CA, the recorded results exhibited strong differences in the current response and the kinetic parameters of redox reactions among the proposed electrodes. It is also interesting to note that the proposed possible hypotheses and suitable mechanisms are particularly necessary to explain in more detail the important changes in kinetic parameters and sensing performance at MoS2-modified electrodes. Among them, the MoS2-3 sample with good crystallinity, high purity, low intrinsic thickness, and particularly, a defect-rich structure offered remarkable advances compared with that of other materials. As a result, this electrode exhibited an extended linear range (0.5 - 50 μM), a lower detection limit (0.1 μM), good repeatability, and high selectivity.

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Section: Resultsmentioning

confidence: 94%

Exploring the Impact of Structural and Physical Properties of Layered Molybdenum Disulfide on Electrochemical Characteristics and The Sensitive Response to Chloramphenicol Detection

Pham,

Ong,

Tien

et al. 2023

J. Electrochem. Soc.

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“…The order of R ct value is as follows: bare SPE > ZIF-8/SPE > Ag@ZIF-8/SPE > Au@ZIF-8/SPE (Table I). More importantly, based on recorded R ct and A values, the electron transfer rate constant (k et ) for each electrode was directly determined by the equation: 26,32 k et = RT/n 2 F 2 AC 0 R ct . As expected, considerable increases in k et values were found around 0.0013, 0.0017, and 0.002 for ZIF-8/SPE, Ag@ZIF-8/SPE, and Au@ZIF-8/SPE compared to bare SPE (0.0003).…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Kinetic Behaviors and Sensing Performance of Au@ZIF-8 and Ag@ZIF-8 Nanocomposites-Based Platforms Towards Ultrasensitive Detection of Chloramphenicol

Pham,

Tien,

Ong

et al. 2024

J. Electrochem. Soc.

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Silver (Ag) and gold (Au) nanoparticles (NPs) are incorporated into the zeolitic imidazolate framework-8 (ZIF-8) host matrix, which is successfully coated the screen-printed electrodes (SPEs) for the effective detection of chloramphenicol (CAP). The morphological and structural characteristics are examined using scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis. Additionally, the electrochemical characteristics and sensing performance of CAP on the proposed electrodes are investigated in detail using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), and differential pulse voltammetry (DPV) measurements, respectively. The results suggest the SPEs modified with Ag@ZIF-8 and Au@ZIF-8 exhibit impressive enhancements in sensitivity, linear concentration range, limits of detection (LODs), and repeatability. Under the optimum conditions, the proposed electrochemical sensors had a linear range of 0.25–50 μM for Ag@ZIF-8/SPE and 5–50 μM for Au@ZIF-8/SPE, corresponding to LODs of 0.16 and 0.404 μM, respectively. Notably, a series of kinetic parameters related to the redox reactions of both standard Fe(CN)6 3−/4− probe and CAP molecules in phosphate-buffered saline (PBS) buffer are determined. Furthermore, valuable insights into the influence mechanism nature of Ag@ZIF-8 and Au@ZIF-8 nanocomposites on the electrochemical behaviors are proposed, demonstrating the great potential of the developed sensors for CAP detection.

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“…The average size was estimated to be 30 nm. 23 Additionally, MoS 2 nanosheets were prepared as described in another study from our group, 24 in which we presented full information regarding the characterization of the material. After synthesis, both citrate-coated e-AgNPs and MoS 2 are stable for about six months, allowing them to be employed for MoS 2 /Ag preparation.…”

Section: Methodsmentioning

confidence: 99%

Ultrasensitive detection of crystal violet using a molybdenum sulfide–silver nanostructure-based sensing platform: roles of the adsorbing semiconductor in SERS signal enhancement

Pham,

Nguyet Nga,

Mai

et al. 2023

Anal. Methods

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A molybdenum disulfide/nickel ferrite-modified voltammetric sensing platform for ultra-sensitive determination of clenbuterol under the presence of an external magnetic field

Abstract: The electrochemical behavior and sensing performance of an electrode modified with NiFe2O4 (NFO), MoS2, and MoS2–NFO were thoroughly investigated using CV, EIS, DPV, and CA measurements, respectively.

Cited by 8 publications

References 58 publications

Exploring the Impact of Structural and Physical Properties of Layered Molybdenum Disulfide on Electrochemical Characteristics and The Sensitive Response to Chloramphenicol Detection

Exploring the Impact of Structural and Physical Properties of Layered Molybdenum Disulfide on Electrochemical Characteristics and The Sensitive Response to Chloramphenicol Detection

Electrochemical Kinetic Behaviors and Sensing Performance of Au@ZIF-8 and Ag@ZIF-8 Nanocomposites-Based Platforms Towards Ultrasensitive Detection of Chloramphenicol

Ultrasensitive detection of crystal violet using a molybdenum sulfide–silver nanostructure-based sensing platform: roles of the adsorbing semiconductor in SERS signal enhancement

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