Analytical performances of Ni LDH films electrochemically deposited on Pt surfaces: Phenol and glucose detection

Scavetta, Erika; Casagrande, A.; Gualandi, Isacco; Tonelli, Domenica

doi:10.1016/j.jelechem.2014.03.018

Cited by 30 publications

(24 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To this end, the electrocatalytic behavior of the four investigated LDHs was assessed by taking glucose as the model analyte. Our group has investigated in‐depth the response of Ni/Al and Co/Al modified electrodes towards oxidizable substrates, including glucose, both in stationary and flow conditions . Taking as an example Ni/Al LDH‐modified electrodes, the electrocatalytic mechanism responsible of their response can be represented by reactions () and (), where Ni centers inside the LDH layers act as redox mediators:

LDH - Ni^{II} + OH \frac{0pt}{^{-}} ⇌ LDH (OH^{-}) - Ni^{III} + e^{-}

LDH (OH^{-}) - Ni^{III} + analyte_{red} \to LDH - Ni^{II} + OH \frac{0pt}{^{-}} + analyte_{ox}

…”

Section: Resultsmentioning

confidence: 99%

Effect of the Synthesis Route and Fe Presence on the Redox Activity of Ni in Layered Double Hydroxides

et al. 2016

Self Cite

View full text Add to dashboard Cite

Pt electrodes coated with a Ni/Al or Ni/Fe layered double hydroxide (LDH) were studied to investigate whether the presence of Fe and the extent of crystallinity affect the performance of the Ni centers as redox mediators for oxidizable compounds. The LDHs were synthesized by both a chemical and an electrochemical method, which allowed the obtainment of thin and well‐adherent LDH films having similar morphology but a different crystallinity degree. Fe centers were not electroactive but they influenced the electroactivity of Ni, shifting the redox potential to less anodic values and increasing the percentage of the electroactive Ni sites. The LDHs prepared by electrodeposition were more conductive than the chemically synthesized LDHs, and, when Fe was the trivalent metal, the electronic conductivity was further increased. The highest electrocatalytic efficiency, evaluated taking glucose as model compound, was obtained for the electrodes coated with the electrochemically synthesized LDHs.

show abstract

LDH - Ni^{II} + OH \frac{0pt}{^{-}} ⇌ LDH (OH^{-}) - Ni^{III} + e^{-}

LDH (OH^{-}) - Ni^{III} + analyte_{red} \to LDH - Ni^{II} + OH \frac{0pt}{^{-}} + analyte_{ox}

…”

Section: Resultsmentioning

confidence: 99%

Effect of the Synthesis Route and Fe Presence on the Redox Activity of Ni in Layered Double Hydroxides

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Unlike wet-chemical methods of NS synthesis, electrodeposition is very fast, does not require any chemical reductant or oxidants, low energy as well as low raw material consumption, costeffective and devoid of formation of any undesirable byproducts (Scavetta et al, 2014). As the NS are directly deposited over the electrode surface, it strongly binds to the surface and avoid the errors in signal generation caused due to the faulty transfer of materials on to the electrode surface.…”

Section: Electrodeposition Is a Simple Technique Of Deposition Of Metalsmentioning

confidence: 99%

Electrodeposition of Metallic Nanostructures for Biosensing Applications in Health Care

Purohit¹,

Kumar²,

Mahato³

et al. 2020

JSR

View full text Add to dashboard Cite

Biosensors are rapidly gaining prominence as the first line of diagnostic approaches in home as well as in clinical settings owing to their excellent sensitivity and quick response time. To achieve better stability, sensitivity, and anti-fouling effects nanomaterials are incorporated in the biosensors development. Metallic nanostructures, a type of nanomaterial is widely used in the biosensors due to its excellent conductivity, electrocatalysis, and optoelectronic property. Among many methods of metallic nanomaterial synthesis, controlled electrodeposition is a simple approach that allows to develop metallic nanostructures with unique shape, size, and catalytic property. There are many factors like pH, temperature, potential, and electrolysis time that influence the growth as well as the kinetics of the nanostructures formation. In this article, we have discussed the mechanism behind the synthesis of nanostructures via electrodeposition, its importance over conventional wet chemistry synthesis protocols, and fabrication procedures of different dimensional (0D, 1D, 2D, and 3D) nanomaterials in view of their uses in various biosensing applications.

show abstract

“…This approach can sometimes display some limitations as to the nanomaterial dimensions and the allowed morphologies, but it shows a lot of advantages, particularly related to the rapid synthesis time, the absence of chemical reductants or oxidants, and of undesired by-products [ 4 ]. Furthermore, when the modifier film is directly deposited on the electrode it permits a better adhesion to be obtained [ 5 ]. Electrodeposition is widely applied using different electrochemical techniques, such as cyclic voltammetry, potential step and double-pulse deposition [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Deposition of Nanomaterials for Electrochemical Sensing

Tonelli¹,

Scavetta²,

Gualandi³

2019

Sensors

Self Cite

156

View full text Add to dashboard Cite

The most commonly used methods to electrodeposit nanomaterials on conductive supports or to obtain electrosynthesis nanomaterials are described. Au, layered double hydroxides (LDHs), metal oxides, and polymers are the classes of compounds taken into account. The electrochemical approach for the synthesis allows one to obtain nanostructures with well-defined morphologies, even without the use of a template, and of variable sizes simply by controlling the experimental synthesis conditions. In fact, parameters such as current density, applied potential (constant, pulsed or ramp) and duration of the synthesis play a key role in determining the shape and size of the resulting nanostructures. This review aims to describe the most recent applications in the field of electrochemical sensors of the considered nanomaterials and special attention is devoted to the analytical figures of merit of the devices.

show abstract

Analytical performances of Ni LDH films electrochemically deposited on Pt surfaces: Phenol and glucose detection

Cited by 30 publications

References 46 publications

Effect of the Synthesis Route and Fe Presence on the Redox Activity of Ni in Layered Double Hydroxides

Effect of the Synthesis Route and Fe Presence on the Redox Activity of Ni in Layered Double Hydroxides

Electrodeposition of Metallic Nanostructures for Biosensing Applications in Health Care

Electrochemical Deposition of Nanomaterials for Electrochemical Sensing

Contact Info

Product

Resources

About