Hydrogen peroxide sensor based on in situ grown Pt nanoparticles from waste screen-printed electrodes

Agrisuelas, Jerónimo; González-Sánchez, María-Isabel; Valero, Edelmira

doi:10.1016/j.snb.2017.04.136

Cited by 47 publications

(47 citation statements)

References 34 publications

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“…(Table 3) as the roughness of electrodes incremented (Table 1S). A similar tendency was observed for exponent n of CPE, which moved away from ideality in the untreated SPCE (n close to 1 is characteristic of smooth surfaces [38,40]) to n close to 0.77 in 6SH (modified aSPCE with one of the largest electroactive areas). For the aSPCEs activated by 5S and 7SH, the standard Randles equivalent circuit could not explain the impedance spectra, which was probably due to the increment in the electroactive area and roughness achieved after treatment (Table 1S).…”

Section: Characterization Of the Electrode Surface Of Aspcessupporting

confidence: 75%

“…to SPPtEs is of key importance because the electrodes based on metallic Pt are widely used for the electroanalytical sensing of H2O2 [37,38]. The possible substitution of these platinum electrodes for activated carbon electrodes could be important if we consider the cheapness of carbon inks compared to precious metal inks.…”

Section: Activation Of Spces By Different Methodsmentioning

confidence: 99%

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Electrochemical performance of activated screen printed carbon electrodes for hydrogen peroxide and phenol derivatives sensing

González-Sánchez

Gómez‐Monedero

Agrisuelas

et al. 2019

Journal of Electroanalytical Chemistry

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Screen-printed carbon electrodes (SPCEs) are widely used for the electroanalysis of a plethora of organic and inorganic compounds. These devices offer unique properties to address electroanalytical chemistry challenges and can successfully compete in numerous aspects with conventional carbon-based electrodes. However, heterogeneous kinetics on SPCEs surfaces is comparatively sluggish, which is why the electrochemical activation of inks is sometimes required to improve electron transfer rates and to enhance sensing performance. In this work, SPCEs were subjected to different electrochemical activation methods and the response to H2O2 electroanalysis was used as a testing probe. Changes in topology, surface chemistry and electrochemical behavior to H2O2 oxidation were performed by SEM, XPS, cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy. The combination of electrochemical activation methods using H2SO4 and H2O2 proved particularly effective. A reduction in charge transfer resistance, together with functionalization with some carbon-oxygen groups on carbon ink surfaces, were likely responsible for such electrochemical improvement. The use of a two-step protocol with 0.5 M H2SO4 and 10 mM H2O2 under potential cycling conditions was the most effective activation procedure investigated herein, and gave rise to 518-fold higher sensitivity than that obtained for the untreated SPCEs upon H2O2 electrooxidation. The electrochemical behavior of acetaminophen, hydroquinone and dopamine is also shown, as a proof of concept upon the optimum activated SPCEs.

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Section: Characterization Of the Electrode Surface Of Aspcessupporting

confidence: 75%

Section: Activation Of Spces By Different Methodsmentioning

confidence: 99%

Electrochemical performance of activated screen printed carbon electrodes for hydrogen peroxide and phenol derivatives sensing

González-Sánchez

Gómez‐Monedero

Agrisuelas

et al. 2019

Journal of Electroanalytical Chemistry

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“…The parameters usually optimized are separated in two main groups: The ones related to the precursor solution where the salt type and concentration are involved, and the conditions of electrochemical deposition. A list of usual salts employed are AgNO 3 [30][31][32][33][34] for silver NPs; HAuCl 4 [31,35,36] and AuCl 3 [37] for gold NPs; Bi(NO 3 ) 3 [16,38,39] for bismuth NPs; CoCl 2 [40] for cobalt NPs; CuCl 2 [41], CuSO 4 [42], and CuNO 3 [43,44] for copper NPs; NiCl 2 [40,45] and NiSO 4 [46,47] for nickel NPs; PdCl 2 [48][49][50] [30,[52][53][54][55][56], and PtCl 2 [37] for platinum NPs; RhCl 3 [57] for rhodium NPs, etc. Although higher concentrations of precursor allow bigger particles to be obtained, the size and shape are usually controlled electrochemically; so, the precursor concentration usually tends to be high enough to have sufficient material susceptible to be deposited and it is not often optimized [33].…”

Section: Methods Based On Electrochemical Depositionmentioning

confidence: 99%

Screen-Printed Electrodes Modified with Metal Nanoparticles for Small Molecule Sensing

et al. 2020

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Recent progress in the field of electroanalysis with metal nanoparticle (NP)-based screen-printed electrodes (SPEs) is discussed, focusing on the methods employed to perform the electrode surface functionalization, and the final application achieved with different types of metallic NPs. The ink mixing approach, electrochemical deposition, and drop casting are the usual methodologies used for SPEs’ modification purposes to obtain nanoparticulated sensing phases with suitable tailor-made functionalities. Among these, applications on inorganic and organic molecule sensing with several NPs of transition metals, bimetallic alloys, and metal oxides should be highlighted.

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“…Platinum nanoparticle-modified electrodes are one of the most important materials used for the electrochemical detection of H2O2 because they show unique electronic and catalytic properties as well as good chemical stability, convenience of electron transfer and biocompatibility [25,26]. Additionally, PtNPs are shown to decrease the oxidation/reduction overvoltage in the determination of H2O2 [27], which is important to avoid interferences from other co-existing substances.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive H2O2 sensor based on poly(azure A)-platinum nanoparticles deposited on activated screen printed carbon electrodes

Jiménez‐Pérez

González-Rodrı́guez

González-Sánchez

et al. 2019

Sensors and Actuators B: Chemical

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The sensitive determination of hydrogen peroxide has broad analytical applications. In this work, a novel non-enzymatic hydrogen peroxide sensor based on Pt nanoparticles (PtNPs) electrochemically deposited on previously modified and activated screen-printed carbon electrodes (aSPCEs) was constructed. The pretreatment consisted of subjecting the electrodes to a surface activation treatment with hydrogen peroxide followed by the electrodeposition of poly(azure A) films (PAA) in a sodium dodecyl sulfate micellar aqueous solution. The PtNPs/PAA/aSPCEs were characterized by scanning electron microscope, X-Ray photoelectron spectrometry, linear scan voltammetry and electrochemical impedance spectroscopy. Linear sweep voltammograms showed that the oxidation peak potential of H2O2 shifts from ~1 V at SPCEs to ~0.1 V at PtNPs/PAA/aSPCEs. The fabricated electrodes showed excellent electrocatalytic activity towards H2O2 oxidation, making its detection possible at 0.1 V. The detection limit was 51.6 nM, which is significantly lower than other modified electrodes found in the literature, and the linear range ranging from 0 to 300 µM. The proposed electrode was successfully applied to the determination of H2O2 in real samples in different areas. Additional experiments against common interfering agents (ascorbic acid, dehydroascorbic acid, glucose, salicylic acid, among other compounds) showed no increase in the current signal and only in the case of ascorbic acid a small interference, not greater than 10% is observed, which indicates high specificity of the sensor. These electrodes open up alternative avenues for the development of highly sensitive, robust and low cost electrochemical H2O2 sensors for field tests.

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Hydrogen peroxide sensor based on in situ grown Pt nanoparticles from waste screen-printed electrodes

Cited by 47 publications

References 34 publications

Electrochemical performance of activated screen printed carbon electrodes for hydrogen peroxide and phenol derivatives sensing

Electrochemical performance of activated screen printed carbon electrodes for hydrogen peroxide and phenol derivatives sensing

Screen-Printed Electrodes Modified with Metal Nanoparticles for Small Molecule Sensing

Highly sensitive H2O2 sensor based on poly(azure A)-platinum nanoparticles deposited on activated screen printed carbon electrodes

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