Smartphone-based square wave voltammetry system with screen-printed graphene electrodes for norepinephrine detection

Ji, Daizong; Shi, Zhouyuanjing; Liu, Zixiang; Low, Sze Shin; Zhu, Jingwen; Zhang, Tingkai; Chen, Zetao; Yu, Xiongjie; Lu, Yanli; Lu, Di; Liu, Qingjun

doi:10.1016/j.smaim.2020.02.001

Cited by 44 publications

(24 citation statements)

References 40 publications

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“…As a control, screen-printed carbon electrodes modified with graphene/graphene oxide by drop casting were also elaborated. The screen-printed graphene electrode presented on its surface a graphene-like layer structure, which led to a higher electron transfer rate in the case of norepinephrine electrochemical analysis [ 231 ]. Therefore, the sensitivity of the smartphone-based electrochemical system was improved by graphene used as a constituent material of the electrode.…”

Section: Metal Nanoparticles and Carbon-based Nanomaterials In (Bio)sensors Designmentioning

confidence: 99%

Metal Nanoparticles and Carbon-Based Nanomaterials for Improved Performances of Electrochemical (Bio)Sensors with Biomedical Applications

et al. 2021

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Monitoring human health for early detection of disease conditions or health disorders is of major clinical importance for maintaining a healthy life. Sensors are small devices employed for qualitative and quantitative determination of various analytes by monitoring their properties using a certain transduction method. A “real-time” biosensor includes a biological recognition receptor (such as an antibody, enzyme, nucleic acid or whole cell) and a transducer to convert the biological binding event to a detectable signal, which is read out indicating both the presence and concentration of the analyte molecule. A wide range of specific analytes with biomedical significance at ultralow concentration can be sensitively detected. In nano(bio)sensors, nanoparticles (NPs) are incorporated into the (bio)sensor design by attachment to the suitably modified platforms. For this purpose, metal nanoparticles have many advantageous properties making them useful in the transducer component of the (bio)sensors. Gold, silver and platinum NPs have been the most popular ones, each form of these metallic NPs exhibiting special surface and interface features, which significantly improve the biocompatibility and transduction of the (bio)sensor compared to the same process in the absence of these NPs. This comprehensive review is focused on the main types of NPs used for electrochemical (bio)sensors design, especially screen-printed electrodes, with their specific medical application due to their improved analytical performances and miniaturized form. Other advantages such as supporting real-time decision and rapid manipulation are pointed out. A special attention is paid to carbon-based nanomaterials (especially carbon nanotubes and graphene), used by themselves or decorated with metal nanoparticles, with excellent features such as high surface area, excellent conductivity, effective catalytic properties and biocompatibility, which confer to these hybrid nanocomposites a wide biomedical applicability.

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Section: Metal Nanoparticles and Carbon-based Nanomaterials In (Bio)sensors Designmentioning

confidence: 99%

Metal Nanoparticles and Carbon-Based Nanomaterials for Improved Performances of Electrochemical (Bio)Sensors with Biomedical Applications

et al. 2021

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“…In one paper, a novel sensor based on screen-printed modified GPH electrode, controlled by a smartphone and using square wave voltammetry (SWV) as detection technique was developed [138]. The analytical system consists of an SPE sensor, a coin-sized detector, and a smartphone.…”

Section: Graphene-modified Electrodesmentioning

confidence: 99%

“…Figure 4 depicts the components of the system, the software interface, and the image of SPE. [138] with permission of Elsevier.…”

Section: Graphene-modified Electrodesmentioning

confidence: 99%

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Bounegru

Apetrei

2020

Catalysts

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This paper aims to revise research on carbonaceous nanomaterials used in developing sensors. In general, nanomaterials are known to be useful in developing high-performance sensors due to their unique physical and chemical properties. Thus, descriptions were made for various structural features, properties, and manner of functionalization of carbon-based nanomaterials used in electrochemical sensors. Of the commonly used technologies in manufacturing electrochemical sensors, the screen-printing technique was described, highlighting the advantages of this type of device. In addition, an analysis was performed in point of the various applications of carbon-based nanomaterial sensors to detect analytes of interest in different sample types.

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“…The method proved to be accurate, precise, selective, fast, and reproducible. In another study, norepinephrine was detected in a sample drop using a smartphone-based square-wave voltammetry (SWV) system with a graphene SPE [3]. Chiu et al [4] reported the simultaneous determination of chloride, bromide, and iodide in aqueous solutions in a 50-µL solution.…”

Section: Introductionmentioning

confidence: 99%

Pb(II) Determination in a Single Drop Using a Modified Screen-Printed Electrode

2021

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This work presents the development and validation of an electroanalytical method for Pb(II) determination in a single drop. The electrochemical sensors used were an unmodified screen-printed electrode (SPE) and a Bi-film SPE (BiFSPE). Anodic square wave stripping voltammetry (SWASV) was performed at an accumulation potential of −1.5 V vs. Ag/AgCl and an accumulation time of 60 s. Electroanalysis with an unmodified SPE did not yield satisfactory results, whereas the BiFSPE was a much better analysis method. The linear concentration using the BiFSPE was in the range of 138.8–162.5 µg/L. The accuracy and precision were evaluated for different spiked concentrations, but the method using the unmodified SPE was neither accurate nor precise. Using the BiFSPE, the method was found to be both accurate and precise for Pb(II) determination at a concentration of 140.0 μg/L, with recovery and relative standard deviation (RSD) of 106.6% and 12.1%, respectively. In addition, using the BiFSPE, LOD and LOQ values of 1.2 μg/L and 3.3 μg/L were obtained, respectively. The possible interference effect on Pb(II) stripping signal was checked in the presence of Cd(II), Zn(II), Cu(II), Sn(IV), Sb(III), Hg(II), Fe(III), As(V), K(I), I−, Ca(II), and NO3−. Electrochemical impedance spectroscopy measurements were also performed for the unmodified SPE and BiFSPE. The application of single drop Pb(II) analysis was tested by real water sample analysis.

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Smartphone-based square wave voltammetry system with screen-printed graphene electrodes for norepinephrine detection

Cited by 44 publications

References 40 publications

Metal Nanoparticles and Carbon-Based Nanomaterials for Improved Performances of Electrochemical (Bio)Sensors with Biomedical Applications

Metal Nanoparticles and Carbon-Based Nanomaterials for Improved Performances of Electrochemical (Bio)Sensors with Biomedical Applications

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Pb(II) Determination in a Single Drop Using a Modified Screen-Printed Electrode

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