Recent developments in carbon nanomaterial-enabled electrochemical sensors for nitrite detection

Li, Xunjia; Ping, Jianfeng; Ying, Yibin

doi:10.1016/j.trac.2019.01.008

Cited by 175 publications

(80 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MWCNTs offer a large surface area, high mechanical strength, small diameter, good chemical and thermodynamic stability, and most importantly, excellent conductivity. MWCNTs can promote electron transport and increase the electrode surface area in electrochemical sensors as has been reported [22,23].…”

Section: Introductionmentioning

confidence: 90%

Multiwalled Carbon Nanotubes-CeO2 Nanorods: A “Nanonetwork” Modified Electrode for Detecting Trace Rifampicin

Zhang¹,

Helú

Zhang³

et al. 2020

Nanomaterials

View full text Add to dashboard Cite

Herein, a “nanonetwork” modified electrode was fabricated based on multiwalled carbon nanotubes and CeO2 nanorods. Scanning electron microscopy, X-ray powder diffraction and zeta potential were employed to characterize this electrode. Multiwalled carbon nanotubes negatively charged and CeO2 nanorods positively charged form “nanonetwork” via electrostatic interaction. The performance of the CeO2 nanorods-based electrode remarkably improved due to the introduction of multiwalled carbon nanotubes. The detection of rifampicin (RIF) was used as a model system to probe this novel electrode. The results showed a significant electrocatalytic activity for the redox reaction of RIF. Differential pulse voltammetry was used to detect rifampicin, the reduction peak current of rifampicin linear with the logarithm of their concentrations in the range of 1.0 × 10−13–1.0 × 10−6 mol/L, The linear equation is ip = 6.72 + 0. 46lgc, the detect limit is 3.4 × 10−14 mol/L (S/N = 3). Additionally, the modified electrode exhibits enduring stability, excellent reproducibility, and high selectivity. This strategy can be successfully used to detect trace rifampicin in samples with satisfactory results.

show abstract

Section: Introductionmentioning

confidence: 90%

Multiwalled Carbon Nanotubes-CeO2 Nanorods: A “Nanonetwork” Modified Electrode for Detecting Trace Rifampicin

Zhang¹,

Helú

Zhang³

et al. 2020

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Bare electrodes need higher applied potential, which limits the application of bare electrodes [24]. Therefore, electrochemical techniques based on modified electrodes have been extensively studied due to their simplicity, high sensitivity and selectivity [25][26][27]. Using a suitable catalyst modified electrode can not only increase the catalytic current for nitrite and nitrate but also expand the detection range and reduce the detection limit.At present, many nanomaterials have been developed to modify electrodes to improve the detection performance of nitrate and nitrite, such as metals [28][29][30][31][32], metal oxide [33], conductive polymers [34,35] and carbon nanomaterials [36][37][38], among which carbon nanomaterials are the most widely studied nanomaterials.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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

Wang

et al. 2019

Sensors

View full text Add to dashboard Cite

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...

show abstract

“…However, it should be mentioned that all the special features of CNTs are not enough for high electrochemical detection capacity. Their functionalization is mandatory before the use for the design of electrochemical (bio)sensors, because it aims to reduce the Van der Waals and π - π interactions that occur between the different tubes and that can hinder the proper interaction with the target analytes (Zhang et al, 2018 ; Li et al, 2019 ).…”

Section: Nanomaterials For Sensors Design For the Detection Of Drugs mentioning

confidence: 99%

Tackling the Problem of Sensing Commonly Abused Drugs Through Nanomaterials and (Bio)Recognition Approaches

et al. 2020

View full text Add to dashboard Cite

We summarize herein the literature in the last decade, involving the use of nanomaterials and various (bio)recognition elements, such as antibodies, aptamers and molecularly imprinted polymers, for the development of sensitive and selective (bio)sensors for illicit drugs with a focus on electrochemical transduction systems. The use and abuse of illicit drugs remains an increasing challenge for worldwide authorities and, therefore, it is important to have accurate methods to detect them in seized samples, biological fluids and wastewaters. They are recently classified as the latest group of “emerging pollutants,” as their consumption has increased tremendously in recent years. Nanomaterials, antibodies, aptamers and molecularly imprinted polymers have gained much attention over the last decade in the development of (bio)sensors for a myriad of applications. The applicability of these (nano)materials, functionalized or not, has significantly increased, and are therefore highly suitable for use in the detection of drugs. Lately, such functionalized nanoscale materials have assisted in the detection of illicit drugs fingerprints, providing large surface area, functional groups and unique properties that facilitate sensitive and selective sensing. The review discusses the types of commonly abused drugs and their toxicological implications, classification of functionalized nanomaterials (graphene, carbon nanotubes), their fabrication, and their application on real samples in different fields of forensic science. Biosensors for drugs of abuse from the last decade's literature are then exemplified. It also offers insights into the prospects and challenges of bringing the functionalized nanobased technology to the end user in the laboratories or in-field.

show abstract

Recent developments in carbon nanomaterial-enabled electrochemical sensors for nitrite detection

Cited by 175 publications

References 96 publications

Multiwalled Carbon Nanotubes-CeO2 Nanorods: A “Nanonetwork” Modified Electrode for Detecting Trace Rifampicin

Multiwalled Carbon Nanotubes-CeO2 Nanorods: A “Nanonetwork” Modified Electrode for Detecting Trace Rifampicin

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

Tackling the Problem of Sensing Commonly Abused Drugs Through Nanomaterials and (Bio)Recognition Approaches

Contact Info

Product

Resources

About