Nitrite electrochemical sensing platform based on tin oxide films

Lete, Cecilia; Chelu, Mariana; Marin, Mariana; Mihaiu, Susana; Preda, Silviu; Anastasescu, Mihai; Calderón-Moreno, José Maria; Dinulescu, Silviu; Moldovan, Carmen; Gärtner, M.

doi:10.1016/j.snb.2020.128102

Cited by 36 publications

(14 citation statements)

References 48 publications

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“…There is research on the production of electrochemical sensors based on tin oxide [114][115][116][117][118][119]. In these works, electrochemical sensors are used to detect various harmful substances.…”

Section: Oxide Materials and Materials Based On Themmentioning

confidence: 99%

“…These works are united by the fact that the sensitive material is obtained by various variations of the sol-gel method. Lete, C et al [115] prepared tin oxide in the sol-gel method by dissolving Sn(II) 2-ethyl hexanoate in absolute alcohol and triethanolamine. The resulting mixture solution was deposited a multilayer film at 450 • C and thermally treated at 600 • C for 1 h.AFM topographical images of SnO 2 film display a very smooth surface with RMS > 3 nm, with 30 nm deep, and a diameter of 100 nm (see Figure 12).…”

Section: Oxide Materials and Materials Based On Themmentioning

confidence: 99%

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Sol-Gel Materials for Electrochemical Applications: Recent Advances

2022

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This review article emphases on the modern approaches to the types of sol-gel materials that are beneficial for electrochemistry, monitored by a report of recent advances in the numerous fields of sol-gel electrochemistry. Modified electrodes for sensors and supercapacitors as well as anti-corrosion are described. Sol-gel synthesis expands the capabilities of technologists to obtain highly porous, homogeneous, and hybrid thin-film materials for supercapacitor electrode application. The widespread materials are transition metal oxides, but due to their low conductivity, they greatly impede the rate capability of electrochemical supercapacitors. The way to optimize their properties is the production of complex oxides or different composites. Among the new materials, a special place is occupied by perovskites and materials with an olivine-type structure, which can be easily obtained by the sol-gel method. The sol-gel coating process has demonstrated excellent chemical stability to advance the corrosion resistance of the various metal alloy substrates. Furthermore, the sol-gel process is a user-friendly technique for applying a hybrid sol-gel coating to provide corrosion resistance. The hybrid sol-gel coating technique is the most attractive, easy to prepare at a lower temperature, and has shown the potential to swap Cr-based coatings. The hybrid sol-gel coating has exhibited promising properties of adherent and uses chemically inert to enhance the corrosion resistance of the metal and alloys. Hence, this review article emphases on the recent advances and approaches in the sol-gel coating processes that influence the belongings of its hybrid sol-gel coating for protecting metal substrates and their alloys from corrosion. In addition, the author discusses the current problem and challenges of hybrid anti-corrosion sol-gel coatings. Metal oxides and composites based on them are actively used to create electrochemical sensors. They synthesized, including the anhydrous and citrate sol-gel methods. Such materials are widely used as glucose biosensors and harmful gas sensors.

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Section: Oxide Materials and Materials Based On Themmentioning

confidence: 99%

Section: Oxide Materials and Materials Based On Themmentioning

confidence: 99%

Sol-Gel Materials for Electrochemical Applications: Recent Advances

2022

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“…It should also be noted that the European regulation established a maximum level of 0.5 mg L −1 . 8 This worldwide regulation has not prevented meat product manufacturers from using NO 2 − above the specified concentrations due to its beneficial properties for preservation. Thus, it is extremely important to develop simple and effective methodologies to detect NO 2 − , providing simple analysis paradigms for both manufacturers and consumers.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the Brazilian National Health Surveillance Agency (ANVISA) accepts a maximum concentration of 0.015 g of NO 2 – per 100 g of meat. It should also be noted that the European regulation established a maximum level of 0.5 mg L –1 . This worldwide regulation has not prevented meat product manufacturers from using NO 2 – above the specified concentrations due to its beneficial properties for preservation.…”

Section: Introductionmentioning

confidence: 99%

Doped Carbon Quantum Dots/PVA Nanocomposite as a Platform to Sense Nitrite Ions in Meat

Carneiro

Oliveira

Rodrigues

et al. 2022

ACS Appl. Mater. Interfaces

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A sensor device based on doped-carbon quantum dots is proposed herein for detection of nitrite in meat products by fluorescence quenching. For the sensing platform, carbon quantum dots doped with boron and functionalized with nitrogen (B,N-Cdot) were synthesized with an excellent 44.3% quantum yield via a one-step hydrothermal route using citric acid, boric acid, and branched polyethylenimine as carbon, boron, and nitrogen sources, respectively. After investigation of their chemical structure and fluorescent properties, the B,N-Cdot at aqueous suspensions showed high selectivity for NO2 – in a linear range from 20 to 50 mmol L–1 under optimum conditions at pH 7.4 and a 340 nm excitation. Furthermore, the prepared B,N-Cdots successfully detected NO2 – in a real meat sample with recovery of 91.4–104% within the analyzed range. In this manner, a B,N-Cdot/PVA nanocomposite film with blue emission under excitation at 360 nm was prepared, and a first assay detection of NO2 – in meat products was tested using a smartphone application. The potential application of the newly developed sensing device containing a highly fluorescent probe should aid in the development of a rapid and inexpensive strategy for NO2 – detection.

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“…However, when it is used improperly or excessively during processing, nitrite will cause adverse effects on human health through the blood. It could combine with blood pigments to produce methemoglobin, which no longer needs oxygen in tissues, or interacts with amines and amides in the stomach to form highly carcinogenic N-nitrosamine compounds [3][4][5]. Because of the potential toxicity of nitrite to the human body, the development of a rapid and sensitive nitrite detection technology is of great significance to public health.…”

Section: Introductionmentioning

confidence: 99%

Construction of polythiophene-derivative films as a novel electrochemical sensor for highly sensitive detection of nitrite

Geng

et al. 2021

Anal Bioanal Chem

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Herein, a novel, convenient, and highly selective electrochemical sensor for determination of nitrite based on a polythiophenederivative film-modified glassy carbon electrode (GCE) was established. In this work, 2,5-di-thiophen-3-yl-thiazolo [5,4-d]thiazole (DTT), a novel thiophene derivative, was synthesized and used to form an original and excellent polymer film (PolyDTTF) on GCE through one-step electropolymerization for the first time. The modified electrodes were characterized by electron microscopy (SEM), Fourier transform infra-red spectroscopy (FT-IR), UV-visible spectra, Raman spectroscopy, and electrochemical technologies, in which the electrochemical sensor based on PolyDTTF was successfully constructed and demonstrated a significant electrocatalytic effect on nitrite. The influence of pH value, electrodeposition scanning times, scanning speed, and potential on the electrochemical behavior of nitrite were investigated in detail. Furthermore, the nitrite sensor exhibits excellent responses proportional to nitrite concentrations (R 2 = 0.9972) over a concentration range of 5.5 × 10 −9 ~3.5 × 10 −5 M with a detection limit (LOD) of 2 nM, and has extremely good anti-interference ability for nitrite detection. This proposed sensor can be used to detect nitrite in actual samples, opening the possibility for applications in the food industry and environmental analysis.

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Nitrite electrochemical sensing platform based on tin oxide films

Cited by 36 publications

References 48 publications

Sol-Gel Materials for Electrochemical Applications: Recent Advances

Sol-Gel Materials for Electrochemical Applications: Recent Advances

Doped Carbon Quantum Dots/PVA Nanocomposite as a Platform to Sense Nitrite Ions in Meat

Construction of polythiophene-derivative films as a novel electrochemical sensor for highly sensitive detection of nitrite

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