Electrochemical sensor for nitrite detection in water samples using flexible laser-induced graphene electrodes functionalized by CNT decorated by Au nanoparticles

Nasraoui, Salem; Al‐Hamry, Ammar; Teixeira, Priscila Rios; Ameur, Sami; Paterno, Leonardo G.; Ali, Mounir Ben; Kanoun, Olfa

doi:10.1016/j.jelechem.2020.114893

Cited by 132 publications

(51 citation statements)

References 44 publications

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“…The above results suggest that the simultaneous and sensitive detection of SO 3 2− and NO 2 − could be well realized using GCE/GONRs−AuNPs. Some electrochemical sensors for the individual and simultaneous detection of SO 3 2− and NO 2 − are listed in Table 2, which displays the electrode surface, the linear range, the LOD value and the sensitivity [36–47]. The linear range, the LOD value and the sensitivity of the as‐fabricated sensor in the present work are comparable with those of other sensors.…”

Section: Resultssupporting

confidence: 65%

Simultaneous Detection of Sulfite and Nitrite on Graphene Oxide Nanoribbons‐gold Nanoparticles Composite Modified Electrode

Zhai

Zhao

et al. 2021

Electroanalysis

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Graphene oxide nanoribbons (GONRs) have abundant oxygen‐containing functional groups and exhibit the improved dispersibility and biocompatibility. Unzipping of multi‐walled carbon nanotubes (MWCNTs) was used for the fabrication of GONRs in this work. A glassy carbon electrode modified with GONRs and gold nanoparticles, GCE/GONRs−AuNPs, was prepared via a two‐step approach and it exerted a high catalytic activity for the electrochemical oxidation of SO32− and NO2−. Under the optimum experimental conditions, the sensitive electrochemical detection of SO32− and NO2− was realized. The developed sensor exhibited a good selectivity, excellent reproducibility, satisfactory stability and high accuracy.

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Section: Resultssupporting

confidence: 65%

Simultaneous Detection of Sulfite and Nitrite on Graphene Oxide Nanoribbons‐gold Nanoparticles Composite Modified Electrode

Zhai

Zhao

et al. 2021

Electroanalysis

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“…The electrochemical characterization of the fabricated LIG electrodes is typically carried out using a model redox probe of potassium ferricyanide in potassium chloride 29 . Figure 2 shows the electrochemical characterization of LIG-PES by cyclic voltammetry.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

“…The porous structure creates efficient multi-dimensional pathways for electron and mass transfer while also creating a higher surface area for the electrochemical interactions between the electrolyte and the electrode surface 20 . The advantage of high electrochemical performance and scalable fabrication process has allowed the detection of many pollutants of environmental significance with improved performance compared to conventional graphene-based sensors [21][22][23][24][25] . To the best of the authors' knowledge, a LIG-based sensor for the detection of 4-Nitrophenol hasn't been proposed yet.…”

Section: Introductionmentioning

confidence: 99%

Laser-Induced Graphene-Based Electrochemical Sensor for 4-Nitrophenol from Polyimide and Polyethersulfone Precursors

Wanjari

Kumar

Duttagupta

et al. 2022

Preprint

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Electrochemical sensors provide an excellent alternative for the in-situ detection of pollutants in water. 4-Nitrophenol is a critical pollutant owing to its acute toxicity and adverse health effects on humans and other living organisms. It is known to have carcinogenic, mutagenic, and teratogenic effects on aquatic life plants and human beings at very low concentrations. In this work, a facile electrochemical sensor for 4-Nitrophenol detection is proposed by laser-induced graphene (LIG) printed on polyethersulfone (PES) and polyimide (PI) films respectively. The laser irradiation of polymeric films results in 3D porous graphene structure formation that increases electron transfer rate as well as the electrochemically active surface area (EASA). This fabrication approach by laser-scribing provides a simple, fast, chemical-free, mask-free, and scalable solution to produce graphene-based electrochemical sensors for 4-Nitrophenol. Cyclic voltammetry is used as the electrochemical technique for the highly sensitive detection of 4-Nitrophenol. PES-based LIG sensors exhibit a higher sensitivity of 3793 µAmM-1cm-2 as compared to that of PI-based LIG sensors with a sensitivity of 3025 µAmM-1cm-2.

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“…However, most of them have many disadvantages, such as toxic chemicals, reagents, complicated and high-cost equipment, time-consuming sample preparation, low selectivity, and inability to perform on-site monitoring. Conversely, electrochemical sensors have been considered as relevant alternatives because they ensure a rapid, sensitive, and low-cost method for the determination of nitrites [11][12][13][14]. Moreover, electrochemical sensors can be fabricated as miniaturized devices, allowing for on-site monitoring of nitrite by non-skilled personnel.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Nitrite Detection by a Carbon Screen Printed Electrode Modified with Photochemically-Made AuNPs

et al. 2022

Self Cite

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Excessive nitrite amounts harm the environment and put public health at high risk. Therefore, accurate and sensitive detection of nitrite in surface and groundwater is mandatory for mitigating its adverse effects. Herein, a highly sensitive electrochemical sensor based on carbon screen-printed electrodes (CSPE) surface-modified with photochemically-made gold nanoparticles (AuNPs, ~12 nm) is proposed for nitrite detection. Scanning electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy show that AuNPs uniformly coat the CSPE, increase its surface area, and contribute to oxidizing nitrite to much lower potential (+0.5 V vs. Ag/AgCl) and faster rate. Under optimized differential pulse voltammetry conditions, the CSPE/AuNPs-PEI electrode responds linearly (R2 > 0.99) to nitrite within a wide concentration range (0.01–4.0 µM), showing a sensitivity of 0.85 µA·µM−1·cm−2 and limit of detection as low as 2.5 nM. The CSPE/AuNPs-PEI electrode successfully detects nitrite in tap water and canned water of olives, showing no influence of those matrices. In addition, the electrode’s response is highly reproducible since a relative standard deviation lower than 10% is observed when the same electrode is operated in five consecutive measurements or when electrodes of different fabrication batches are evaluated.

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Electrochemical sensor for nitrite detection in water samples using flexible laser-induced graphene electrodes functionalized by CNT decorated by Au nanoparticles

Cited by 132 publications

References 44 publications

Simultaneous Detection of Sulfite and Nitrite on Graphene Oxide Nanoribbons‐gold Nanoparticles Composite Modified Electrode

Simultaneous Detection of Sulfite and Nitrite on Graphene Oxide Nanoribbons‐gold Nanoparticles Composite Modified Electrode

Laser-Induced Graphene-Based Electrochemical Sensor for 4-Nitrophenol from Polyimide and Polyethersulfone Precursors

Enhanced Nitrite Detection by a Carbon Screen Printed Electrode Modified with Photochemically-Made AuNPs

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