Au/ERGO nanoparticles supported on Cu-based metal-organic framework as a novel sensor for sensitive determination of nitrite

He, Baoshan; Yan, Dandan

doi:10.1016/j.foodcont.2019.04.001

Cited by 37 publications

(15 citation statements)

References 29 publications

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“…The metal-organic framework (MOF) has great catalysis because of its high surface area and open metal sites. He et al prepared Au/copper-based metal-organic framework(Cu-TDPAT)/ERGO nanomaterials by electrodeposition for nitrite detection [100]. The schematic diagram shows as Figure 6.…”

Section: Metalmentioning

confidence: 99%

See 1 more Smart Citation

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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Section: Metalmentioning

confidence: 99%

“…The modified electrode has a good detection effect in tap water, which proves that Au/Cu-TDPAT/ERGO composite material is suitable for actual sample analysis. [100]. The schematic diagram shows as Figure 6.…”

Section: Metalmentioning

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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“…with further reactions e.g., chromogenic reaction and redox reaction. [211] Yao and co-authors summarized the rapid determination of contaminants in food by employing luminescent MOFs. [212] Recently, Wu et al developed a highly luminescent europium Eu-MOF, i.e., LMOF-241 emission spectra from the LMOF-241 at Aflatoxin B1 concentrations of 0 ppb (black), 46 ppb (red), 91 ppb (green), 134 ppb (orange), and 177 ppb (blue).…”

Section: Detection and Analyses Of Pollutants In Foodmentioning

confidence: 99%

“…He et al developed an electrode with electro -chemically reduced graphene oxide (ERGO) function, which was synthesized through coordinate bonding between Cu ion clusters and 2,4,6-tris(3,5-dicarboxylphenyl -amino)-1,3,5triazine(TDP-AT)ligands (i.e., Cu-TDPAT), and further conjugated with Au nanoparticles to form Au/ERGO/Cu-TDPAT composite. [211] This Au/ERGO/Cu-TDPAT electrode represented a superior response to the oxidation process of nitrite, which enabled to detect nitrite with a wide linear concentrations of 0.001 to 1,000 μmol/L with the detection limit of 0.006 μmol/L, and was successfully applied on nitrite detection in tap water, milk, sausage, and pickled vegetable. Hu et al synthesized a novel luminescent MOF (LMOF), denoted as LMOF-241, with the ligands of 1,1,2,2-tetrakis(4-(pyridin-4-yl)phenyl) ethane (TPPE) and biphenyl-4,4'dicarboxylic acid (BPDC) coordinated bonding zinc ion cultures ( Fig.…”

Section: Detection and Analyses Of Pollutants In Foodmentioning

confidence: 99%

Metal-organic Framework-based Materials: Synthesis, Stability and Applications in Food Safety and Preservation

Nong¹,

Liu²,

Wang³

et al. 2020

ES Food Agroforest

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Investigation on food safety and preservation is essential to provide high quality and safe food for human beings, including accurate determination and efficient removal of inorganic heavy metal ions and organic contaminants, as well as regulation of food postharvest ripening and intelligent sterilization. In the last two decades, metal-organic frameworks (MOFs), as functionalized porous materials, have aroused interests of researchers because of their advantages of high porosity, large specific surface area, flexible structure properties, and abundant binding sites for guest molecules. MOFs have shown great potentials in practical applications in food and related fields. In this overview, we summarized the MOF crystallization mechanisms, synthesis routes and methods, stability, as well as the applications in food contamination including removal of heavy metal ions, dyes, and antibiotics, and food preservation including regulation of fruit and vegetable ripening, removal of moisture and oxygen, and high-efficiency sterilization. Finally, two perspectives focusing on the development of MOFs for innovative food research, i.e., food-grade MOFs and MOF composites are suggested based on our understanding.

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“…Direct oxidation of nitrite ions on conventional electrodes is still challenging due to the high overpotentials required. Thus, different modified electrodes were reported for nitrite sensing [51,52,53,54]. Gr/MoS 2 can be used to decrease nitrite ions reduction potentials to +0.8 V vs. Ag/AgCl and increase sensitivity (Figure 3A,B) [55].…”

Section: Applications Of Gr/2d Mos2 Compositesmentioning

confidence: 99%

Fabrication of Graphene/Molybdenum Disulfide Composites and Their Usage as Actuators for Electrochemical Sensors and Biosensors

2019

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From the rediscovery of graphene in 2004, the interest in layered graphene analogs has been exponentially growing through various fields of science. Due to their unique properties, novel two-dimensional family of materials and especially transition metal dichalcogenides are promising for development of advanced materials of unprecedented functions. Progress in 2D materials synthesis paved the way for the studies on their hybridization with other materials to create functional composites, whose electronic, physical or chemical properties can be engineered for special applications. In this review we focused on recent progress in graphene-based and MoS2 hybrid nanostructures. We summarized and discussed various fabrication approaches and mentioned different 2D and 3D structures of composite materials with emphasis on their advances for electroanalytical chemistry. The major part of this review provides a comprehensive overview of the application of graphene-based materials and MoS2 composites in the fields of electrochemical sensors and biosensors.

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Au/ERGO nanoparticles supported on Cu-based metal-organic framework as a novel sensor for sensitive determination of nitrite

Cited by 37 publications

References 29 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

Metal-organic Framework-based Materials: Synthesis, Stability and Applications in Food Safety and Preservation

Fabrication of Graphene/Molybdenum Disulfide Composites and Their Usage as Actuators for Electrochemical Sensors and Biosensors

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