Improved electrochemical detection of metals in biological samples using 3D-printed electrode: Chemical/electrochemical treatment exposes carbon-black conductive sites

Rocha, Diego P.; Squissato, André L.; Silva, Sarah M. da; Richter, Eduardo M.; Muñoz, Rodrigo A.A.

doi:10.1016/j.electacta.2020.135688

Cited by 113 publications

(61 citation statements)

References 60 publications

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“…Ni 1-x-y V x Ce y -Layered Double Hydroxide Screen-Printed Electrode for the Electrochemical Detection of Hydrogen Peroxide Ni 0.9 V 0.05 Ce 0.05 -LDHs were synthesized (as described in the experimental section) and used in SPE modification aiming to improve the electrochemical detection of hydrogen peroxide (H 2 O 2 ) found at mouthwash sample (purchased in a local market). Initially, to achieve an improvement in the response of the modified SPE, it was submitted to a well-known electrochemical treatment process using NaOH 0.5 mol L −1 by first applying +1.4 V for 200 s, followed by the potential of −1.0 V for another 200 s (Rocha et al, 2020). After the electrochemical treatment mentioned earlier, an increase of around 30% in the reduction current of 15 mmol L −1 H 2 O 2 (background electrolyte: KCl 0.1 mol L −1 ) was observed.…”

Section: Ni 1-x-y V X Ce Y -Layered Double Hydroxide As Electrode Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

NiVCe-Layered Double Hydroxide as Multifunctional Nanomaterials for Energy and Sensor Applications

et al. 2021

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Multifunctional nanomaterials have been attracting increasing attention as solutions to the existing challenges in energy systems and sensing technologies. In this regard, multifunctional NiVCe-layered double hydroxide (NiVCe-LDH) nanoparticles were synthesized by the modified sol-gel method. The analysis of this material demonstrated excellent potential for its utilization as electrode materials for hybrid supercapacitor, oxygen evolution reaction (OER), and sensor applications. The NiVCe-LDH nanoparticles delivered a specific charge of 740 C g−1 at 10 A g−1 and decent rate performance (charge retention of 68.7% at 100 A g−1), showing excellent prospects as electrode material for hybrid energy storage devices. In addition, NiVCe-LDH nanoparticles have also been successfully applied as a proof-of-concept for OER, as confirmed by their low Tafel slope of 47 mV dec−1. Finally, trimetallic NiVCe-LDH-based screen-printed electrodes were developed for the sensing of hydrogen peroxide directly in a real complex mouthwash sample, achieving a satisfactory recovery value of around 98% using a fast and simple batch injection analysis procedure. These results allow us to predict the great potential of this trimetallic hydroxide for building electrochemical sensors with good perspectives as electroactive material for OER processes and energy storage technologies.

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Section: Ni 1-x-y V X Ce Y -Layered Double Hydroxide As Electrode Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

NiVCe-Layered Double Hydroxide as Multifunctional Nanomaterials for Energy and Sensor Applications

et al. 2021

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“…Some examples of using biochar for electrochemical sensing are reported in literature (de Almeida et al, 2020). Other carbonaceous materials from biomass have already been used for electrode production (Ferreira et al, 2018;João et al, 2020;Rocha et al, 2020). Li et al (2018) proposed electrically conductive and mechanically stable carbon nanofiber aerogels made from wood-derived nanofibrillated cellulose.…”

Section: Other Materialsmentioning

confidence: 99%

“…Moreover, a good repeatability and reproducibility [relative standard deviation (RSD) of 2.67 and 7.14%, respectively] have been achieved. Different electrochemical treatments have also been reported in literature for removing non-conductive polymer layers (Rocha et al, 2020 ).…”

Section: Novel Materials For Printingmentioning

confidence: 99%

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Sustainable Printed Electrochemical Platforms for Greener Analytics

Sfragano

Laschi²,

Palchetti

2020

Front. Chem.

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The development of miniaturized electrochemical platforms holds considerable importance for the in situ analytical monitoring of clinical, environmental, food, and forensic samples. However, it is crucial to pay attention to the sustainability of materials chosen to fabricate these devices, in order to decrease the amount and the impact of waste coming from their production and use. In the framework of a circular economy and an environmental footprint reduction, the electrochemical sensor production technology must discover the potentiality of innovative approaches based on techniques and materials that can satisfy the needs of environmental-friendly and greener analytics. The aim of this review is to describe some of the printing technologies most used for sensor production, including screen-printing, inkjet-printing, and 3D-printing, and the low-impact materials that are recently proposed for these techniques, such as polylactic acid, cellulose, silk proteins, biochar.

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“…Para a realização destes estudos, inicialmente, o SPE modificado foi submetido a um processo de tratamento eletroquímico em meio de NaOH 0,5 mol L -1 aplicando primeiramente +1,4 V por 200s, seguido pelo potencial de -1,0 V por mais 200s [119].…”

Section: Estudos Analíticos Realizados Para O α-Ni09ce005v005(oh)2 Speunclassified

Desenvolvimento de (bio)sensores (nano)estruturados visando a determinação de analitos em amostras farmacêuticas e fluidos biológicos

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Improved electrochemical detection of metals in biological samples using 3D-printed electrode: Chemical/electrochemical treatment exposes carbon-black conductive sites

Cited by 113 publications

References 60 publications

NiVCe-Layered Double Hydroxide as Multifunctional Nanomaterials for Energy and Sensor Applications

NiVCe-Layered Double Hydroxide as Multifunctional Nanomaterials for Energy and Sensor Applications

Sustainable Printed Electrochemical Platforms for Greener Analytics

Desenvolvimento de (bio)sensores (nano)estruturados visando a determinação de analitos em amostras farmacêuticas e fluidos biológicos

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