Electrochemical detection of amoxicillin on 2D graphene-gold nanoparticle-Lacasse bio-interfaces: Combined experimental and theoretical study

Osikoya, Adeniyi Olugbenga; Opoku, Francis; Govender, Penny Poomani

doi:10.1016/j.cplett.2020.138278

Cited by 18 publications

(2 citation statements)

References 42 publications

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“…Besides that, graphene material is often being introduced to increase the electron transfer ability and thus increase the properties of the surface. [21][22][23] RGO has been modified with chitosan on the glassy carbon electrode and then coppercobalt bimetallic dendrite structure is electrodeposited to obtain the composite with a sensitivity of 1921 μA⋅mM À 1 cm À 2 . [24] The graphene modified dendritic CuNi is thus hoped to have higher sensing properties due to the high surface area of the dendritic structure, the high electron transfer rate of graphene and the high activity of the Cu and Ni themselves as well as their synergistic effect.…”

Section: Introductionmentioning

confidence: 99%

A Non‐enzymatic Glucose Sensor Based on Graphene Modified Copper‐Nickel Bimetallic Dendrite Structure

et al. 2022

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Graphene modified dendritic CuNi crystals with CuNi preliminary layer were successfully prepared by using a plating method. It exhibits excellent glucose sensing property with sensitivity of 2353 μA⋅mM À 1 cm À 2 within a linear range of 0.5 μM-1.03 mM with a detection limit of 0.75 μM. The sensitivity can be further increased to 2914 μA⋅mM À 1 cm À 2 within a linear range of 0.5 μM-1.53 mM by using a graphite anode. The electrode shows the low adsorption resistance and diffusion resistance besides that of the lower electron transfer resistance. The synergistic effect between the bimetallic CuNi, Cu, Ni, CuO, Cu 2 O, Ni(OH) 2 with high activity and graphene induced the high sensitivity of the electrode as-prepared.

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Section: Introductionmentioning

confidence: 99%

A Non‐enzymatic Glucose Sensor Based on Graphene Modified Copper‐Nickel Bimetallic Dendrite Structure

et al. 2022

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“…In electrochemistry, several nanomaterials have been investigated to improve the electrocatalytic properties of electrode materials for several applications [16,17]. Particularly, it has been shown that a combination of factors such as surface strain and chemical interactions modify the nanostructure reactivity [18].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical adsorption of hydrogen on mixed Pd₂Pt nanostructures

Schulte

Santos

Quaino

2021

J. Phys.: Condens. Matter

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In the present contribution we have focused on the electrochemical adsorption of a proton from the solution-the Volmer reaction-on a variety of systems based on bimetallic nanostructures-clusters and wires-of Pd and Pt deposited on a surface of Au(111). We have calculated the free energy surface for the electron transfer step by a combination of DFT calculations, MD simulations and the theory of electrocatalysis. We analyze in detail the interaction of the metal d band with the valence orbital of the hydrogen and its effect on the catalytic activity as well as several aspects that influence the electrode reactivity such as spatial arrangements of the nanostructures, the solvation shell and chemical factors. We found that the mixed Pd 2 Pt wire interacts strongly with hydrogen, and retains an almost complete solvation shell, which is reflected in a substantially reduced activation energy for the Volmer step. Thus, Pd 2 Pt wires on Au(111) are predicted to be efficient electrocatalysts for the reaction.

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Design of New Sensor Functionalized with Green Nanoparticles PbO@Hyphaene Thebaica for in‐situ Amoxicillin Monitoring in Real Media

Ali

2024

ChemistrySelect

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The present work reports for the first time the design of an electrochemical sensor functionalized with green nanoparticles based on Hyphaene thebaica for amoxicillin quantification. Based on a simple one‐pot bio‐reduction reaction, lead oxide PbO coated with Hyphaene thebaica was synthesized. Ultraviolet‐visible spectroscopy (UV), fourier transform infrared (FITR), transmission electron microscopy (TEM) and X‐ray diffraction (XRD) were used to control optical, structural, morphological, and physicochemical properties of the elaborated nanoparticles. Results demonstrated a good dispersion with a spherical morphology, which is in the order 8 nm. Regarding the good properties of nanoparticles, they are integrated to design an electrochemical sensor for amoxicillin detection. Cyclic voltammetry and square wave voltammetry were used to follow up the sensor modification and the electrochemical sensor response versus different amoxicillin concentrations. Under optimal conditions, the electrochemical sensor modified with the nanoparticles in question provides a linear detection in the range 50–10000 nM, with a detection limit of 0.105 nM. The proposed sensor also exhibits good sensitivity and selectivity against several antibiotic analogues and has been successfully applied to real samples. Aside from its power in several fields including antibacterial, antifungal, enzyme‐inhibiting and antioxidant, green nanoparticles based on Hyphaene thebaica have demonstrated an effectiveness as a sensor for the electrochemical detection of amoxicillin, highlighting the possibility of adopting these sensors as routine test for the environment monitoring.

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Electrochemical detection of amoxicillin on 2D graphene-gold nanoparticle-Lacasse bio-interfaces: Combined experimental and theoretical study

Cited by 18 publications

References 42 publications

A Non‐enzymatic Glucose Sensor Based on Graphene Modified Copper‐Nickel Bimetallic Dendrite Structure

A Non‐enzymatic Glucose Sensor Based on Graphene Modified Copper‐Nickel Bimetallic Dendrite Structure

Electrochemical adsorption of hydrogen on mixed Pd₂Pt nanostructures

Design of New Sensor Functionalized with Green Nanoparticles PbO@Hyphaene Thebaica for in‐situ Amoxicillin Monitoring in Real Media

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Electrochemical detection of amoxicillin on 2D graphene-gold nanoparticle-Lacasse bio-interfaces: Combined experimental and theoretical study

Cited by 18 publications

References 42 publications

A Non‐enzymatic Glucose Sensor Based on Graphene Modified Copper‐Nickel Bimetallic Dendrite Structure

A Non‐enzymatic Glucose Sensor Based on Graphene Modified Copper‐Nickel Bimetallic Dendrite Structure

Electrochemical adsorption of hydrogen on mixed Pd2Pt nanostructures

Design of New Sensor Functionalized with Green Nanoparticles PbO@Hyphaene Thebaica for in‐situ Amoxicillin Monitoring in Real Media

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Electrochemical adsorption of hydrogen on mixed Pd₂Pt nanostructures