An electrochemical sensor for sensitive determination of nitrites based on Ag–Fe3O4–graphene oxide magnetic nanocomposites

Li, Boqiang; Nie, Fei; Sheng, Qinglin; Zheng, Jianbin

doi:10.1515/chempap-2015-0099

Cited by 18 publications

(4 citation statements)

References 45 publications

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“…The detection limit of nitrite is 0.24 µM and the detection range is from 1 µM to 1000 µM. [76]. This material modified GCE was used to detect nitrite.…”

Section: Metalsmentioning

confidence: 99%

Application of Graphene-Based Materials for Detection of Nitrate and Nitrite in Water—A Review

Wang

et al. 2019

Sensors

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Nitrite and nitrate are widely found in various water environments but the potential toxicity of nitrite and nitrate poses a great threat to human health. Recently, many methods have been developed to detect nitrate and nitrite in water. One of them is to use graphene-based materials. Graphene is a two-dimensional carbon nano-material with sp 2 hybrid orbital, which has a large surface area and excellent conductivity and electron transfer ability. It is widely used for modifying electrodes for electrochemical sensors. Graphene based electrochemical sensors have the advantages of being low cost, effective and efficient for nitrite and nitrate detection. This paper reviews the application of graphene-based nanomaterials for electrochemical detection of nitrate and nitrite in water. The properties and advantages of the electrodes were modified by graphene, graphene oxide and reduced graphene oxide nanocomposite in the development of nitrite sensors are discussed in detail. Based on the review, the paper summarizes the working conditions and performance of different sensors, including working potential, pH, detection range, detection limit, sensitivity, reproducibility, repeatability and long-term stability. Furthermore, the challenges and suggestions for future research on the application of graphene-based nanocomposite electrochemical sensors for nitrite detection are also highlighted.Sensors 2020, 20, 54 2 of 35 deaths. Nitrite in drinking water can irreversibly convert hemoglobin into methemoglobin, which results in a decrease in oxygen carrying capacity in the blood [5]. It can react with secondary amines to produce n-nitrosamines, which are likely to lead to gastric cancer [6]. Since nitrate is converted into nitrite in the digestive tract, it also very harmful to the human body [7]. It can also lead to the unnatural reproduction of aquatic plants and algae, leading to "red tides" and the death of fish [8,9]. The United States (U.S.) Environmental Protection Agency has limited the nitrite and nitrate content in drinking water to 1 mg/L and 10 mg/L [10] and other countries have made similar regulations. The concentration of nitrate and nitrite in water has become one of the indexes for evaluating water quality. Therefore, the detection of nitrate and nitrite in water samples at low concentrations has been the focus of research [11].So far, many methods have been used to detect nitrate and nitrite, such as spectrophotometry [12][13][14], chemiluminescence [15,16], chromatography [17], fluorescence [18,19] and electrochemical methods [20][21][22]. Among them, the electrochemical method is one of the most commonly used detection methods because of its advantages of being low cost, fast, direct and high efficiency [23]. However, the sensitivity and accuracy of the electrodes are reduced because of disturbance by other substances. Bare electrodes need higher applied potential, which limits the application of bare electrodes [24]. Therefore, electrochemical techniques based on modified electrodes have been extensively...

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“…The detection limit of nitrite is 0.24 µM and the detection range is from 1 µM to 1000 µM. [76]. This material modified GCE was used to detect nitrite.…”

Section: Metalsmentioning

confidence: 99%

Application of Graphene-Based Materials for Detection of Nitrate and Nitrite in Water—A Review

Wang

et al. 2019

Sensors

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show abstract

“…Real samples for Nitrite [52] Alternatively, magnetic nanoparticles could bind with graphene or its derivatives via covalent coupling reaction including amidation reaction and click chemistry [22][23][24][25][26][27][28][29][30][31]. For example, Bi et al reported magnetic GO-hemin composites probes based on amidation reaction [22].…”

Section: Non-covalent Assembly Methodsmentioning

confidence: 99%

Functional Magnetic Graphene Composites for Biosensing

Huang

et al. 2020

IJMS

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Magnetic graphene composites (MGCs), which are composed of magnetic nanoparticles with graphene or its derivatives, played an important role in sensors development. Due to the enhanced electronic properties and the synergistic effect of magnetic nanomaterials and graphene, MGCs could be used to realize more efficient sensors such as chemical, biological, and electronic sensors, compared to their single component alone. In this review, we first reviewed the various routes for MGCs preparation. Then, sensors based on MGCs were discussed in different groups, including optical sensors, electrochemical sensors, and others. At the end of the paper, the challenges and opportunities for MGCs in sensors implementation are also discussed.

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“…Urea was detected with a concentration range of 5–100 mg/dL and with limit of detection was 0.5 mg/dL [ 44 ]. In year 2015, Li et al developed a nitrite sensor by using the Ag–Fe 3 O 4 –graphene oxide magnetic nanocomposite, with a linear range of 0.5 μM–0.72 mM and the lower limit of detection was 0.17 μM [ 45 ]. In 2016, Lee et al used Fe 2 O 3 /graphene NPs for fabricating electrochemical sensor for detecting Zn 2+ , Cd 2+ and Pb 2+ metal ions.…”

Section: Advancement Of Nanotechnology and Nps-based Biosensorsmentioning

confidence: 99%

Nanomaterials-based biosensor and their applications: A review

Malik,

Singh,

Goyat

et al. 2023

Heliyon

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An electrochemical sensor for sensitive determination of nitrites based on Ag–Fe3O4–graphene oxide magnetic nanocomposites

Cited by 18 publications

References 45 publications

Application of Graphene-Based Materials for Detection of Nitrate and Nitrite in Water—A Review

Application of Graphene-Based Materials for Detection of Nitrate and Nitrite in Water—A Review

Functional Magnetic Graphene Composites for Biosensing

Nanomaterials-based biosensor and their applications: A review

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