The influence of process parameters of screen-printed invasive plant paper electrodes on cyclic voltammetry

2020 ◽  
Vol 35 (2) ◽  
pp. 299-307 ◽  
Author(s):  
Urška Kavčič ◽  
Igor Karlovits
Keyword(s):  
Cyclic Voltammetry ◽  
Significant Influence ◽  
Invasive Plant ◽  
Low Cost ◽  
Electrochemical Behaviour ◽  
Post Treatment ◽  
Japanese Knotweed ◽  
Influence Of Process Parameters ◽  
Screen Printed Electrodes ◽  
Screen Printed

AbstractUsing disposable screen-printed electrodes is a convenient way of monitoring environmental pollution, production process control etc. Usually, commercially available screen-printed electrodes are used, but more and more studies are being carried out in the field of printing electrodes on thinner, low-cost and versatile substrates, including paper. In the present research, the comparison of screen-printed electrodes printed on different paper-based materials is presented. Two unique and innovative invasive plant-based papers made from (1) Japanese knotweed, (2) Canadian and Giant goldenrod and (3) commercially available cardboard were used as a printing material for the electrodes. The selected paper substrates were characterized, and screen-printed electrodes were printed. The influence of substrates’ properties and pre- or post-treatment of the screen-printed electrodes on the electrochemical behaviour is thoroughly analyzed. The results indicate that the printing substrate (roughness) had the most significant influence on the cyclic voltammetry response. Comparing pre- and post-treatment of screen-printed electrodes, it was shown that grinding influenced the electrochemical activity significantly, while corona discharge does not have as significant influence. Besides, it was shown that the invasive plant-based papers are viable alternatives to commercially available papers and can be used as low-cost and eco-friendly alternatives for disposable screen-printed electrodes.

scholarly journals Comparison of cyclic voltammetry measurements of paper-based screen printed electrodes via proprietary and open source potentiostat

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 3916-3933
Author(s):  
Igor Karlovits ◽  
Urška Kavčič ◽  
Špela Trafela ◽  
Kristina Žužek Rožman
Keyword(s):  
Cyclic Voltammetry ◽  
Open Source ◽  
Invasive Plant ◽  
Low Cost ◽  
Industrial Process ◽  
Polluted Water ◽  
Raspberry Pi ◽  
Mechanical Grinding ◽  
Screen Printed Electrodes ◽  
Screen Printed

The use of screen-printed electrodes in different monitoring applications, e.g., polluted water, biotechnology, agriculture, industrial process control, and other applications, are continuously being developed. New cheap and open-source potentiostats have been recently emerging, in addition to the commercial and proprietary solutions on the market. In this study, paper-based, screen-printed electrodes were utilised as an alternative solution for ceramic-based electrodes and were tested with two potentiostats (proprietary and low-cost open-source running on wireless 64 bit Linux system installed on Raspberry Pi 3+). Unique paper substrates made from invasive plant papers and one commercial product were used for screen electrode printing. Ink layer thicknesses variations and mechanical grinding were applied, and cyclic voltammetry measurements were conducted. The variation in cyclic voltammetry measurements could be attributed to two sources: the potentiostats showed differences in their sensibility and signal values, and paper surface and structure also contributed to differences. Simultaneously, the additional processing steps, e.g., mechanical grinding, introduced additional measurement variations and differences in the measurement process.

scholarly journals Biochar from Brewers’ Spent Grain: A Green and Low-Cost Smart Material to Modify Screen-Printed Electrodes

Biosensors ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 139 ◽  
Author(s):  
Rocco Cancelliere ◽  
Katya Carbone ◽  
Mauro Pagano ◽  
Ilaria Cacciotti ◽  
Laura Micheli
Keyword(s):  
Low Cost ◽  
Electrochemical Behaviour ◽  
Screen Printed Electrode ◽  
Experimental Conditions ◽  
Casting Technique ◽  
Peak Separation ◽  
Screen Printed Electrodes ◽  
Spent Grain ◽  
First Time ◽  
Screen Printed

In the present study, biochar from brewers’ spent grain was used, for the first time, to develop screen-printed electrodes. After having investigated the dispersion behaviour of biochar in different organic solvents, a biochar-based screen-printed electrode was prepared with the drop-casting technique. In order to understand the electrochemical potentiality and performances of the biochar/sensor tool, different electroactive species, i.e., ferricyanide, benzoquinone, epinephrine, ascorbic, and uric acids, were used. The results were compared with those of the same electrodes that were modified with commercial graphene, confirming that the proposed electrode showed improved electrochemical behaviour in terms of resolution, peak-to-peak separation, current intensity, and resistance to charge transfer. Furthermore, a tyrosinase biosensor was developed by direct immobilisation of this enzyme on the biochar/screen printed electrode, as an example of the potential of biochar for disposable biosensor development. The efficiently occurred immobilisation of the biochar on the screen printed electrode’s (SPE’s) surface was demonstrated by the observation of the working electrode with a scanning electron microscope. The detection was performed by measuring the current due to the reduction of the corresponding quinone at low potential, equal to −0.310 V for epinephrine. The experimental conditions for the tyrosinase immobilization and the analytical parameters, such as applied potential and pH of buffer, were studied and optimized. Under these conditions, the electrochemical biosensors were characterized. A linear working range of epinephrine was obtained from 0.05 up to 0.5 mM. The detection limit was 2 × 10−4 mM for the biosensor.

scholarly journals Electrochemical (Bio)Sensors for Pesticides Detection Using Screen-Printed Electrodes

Biosensors ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 32 ◽  
Author(s):  
Beatriz Pérez-Fernández ◽  
Agustín Costa-García ◽  
Alfredo de la Escosura- Muñiz
Keyword(s):  
Mass Spectrometry ◽  
High Performance ◽  
Point Of Care ◽  
Low Cost ◽  
Review Article ◽  
Food Control ◽  
Food Contaminants ◽  
Screen Printed Electrodes ◽  
Analytical Tools ◽  
Screen Printed

Pesticides are among the most important contaminants in food, leading to important global health problems. While conventional techniques such as high-performance liquid chromatography (HPLC) and mass spectrometry (MS) have traditionally been utilized for the detection of such food contaminants, they are relatively expensive, time-consuming and labor intensive, limiting their use for point-of-care (POC) applications. Electrochemical (bio)sensors are emerging devices meeting such expectations, since they represent reliable, simple, cheap, portable, selective and easy to use analytical tools that can be used outside the laboratories by non-specialized personnel. Screen-printed electrodes (SPEs) stand out from the variety of transducers used in electrochemical (bio)sensing because of their small size, high integration, low cost and ability to measure in few microliters of sample. In this context, in this review article, we summarize and discuss about the use of SPEs as analytical tools in the development of (bio)sensors for pesticides of interest for food control. Finally, aspects related to the analytical performance of the developed (bio)sensors together with prospects for future improvements are discussed.

scholarly journals Electrochemical Properties of Screen-Printed Carbon Nano-Onion Electrodes

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3884
Author(s):  
Loanda R. Cumba ◽  
Adalberto Camisasca ◽  
Silvia Giordani ◽  
Robert J. Forster
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Limit Of Detection ◽  
Low Cost ◽  
Analytical Sensitivity ◽  
High Performing ◽  
Carbon Particles ◽  
Screen Printed Electrodes ◽  
Ink Formulation ◽  
Screen Printed

The properties of carbon nano-onions (CNOs) make them attractive electrode materials/additives for the development of low-cost, simple to use and highly sensitive Screen Printed Electrodes (SPEs). Here, we report the development of the first CNO-based ink for the fabrication of low-cost and disposable electrodes, leading to high-performance sensors. Achieving a true dispersion of CNOs is intrinsically challenging and a key aspect of the ink formulation. The screen-printing ink formulation is achieved by carefully selecting and optimising the conductive materials (graphite (GRT) and CNOs), the polymer binder, the organic solvent and the plasticiser. Our CNO/GRT-based screen-printed electrodes consist of an interconnected network of conducting carbon particles with a uniform distribution. Electrochemical studies show a heterogeneous electron transfer rate constant of 1.3 ± 0.7 × 10−3 cm·s−1 and a higher current density than the ferrocene/ferrocenium coupled to a commercial graphite SPEs. In addition, the CNO/GRT SPE can detect dopamine in the concentration range of 10.0–99.9 µM with a limit of detection of 0.92 µM (N = 3). They exhibit a higher analytical sensitivity than the commercial graphite-based SPE, with a 4-fold improvement observed. These results open up the possibility of using high-performing CNO-based SPEs for electrochemical applications including sensors, battery electrodes and electrocatalysis.

A simple and low-cost screen printed electrode for hepatocellular carcinoma methylation detection

The Analyst ◽  
2019 ◽  
Vol 144 (10) ◽  
pp. 3282-3288 ◽  
Author(s):  
Bobo Huang ◽  
Lin Ji ◽  
Bo Liang ◽  
Qingpeng Cao ◽  
Tingting Tu ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Dna Methylation ◽  
Low Cost ◽  
Screen Printed Electrode ◽  
Screen Printed Electrodes ◽  
Screen Printed

AuNPs decorated screen printed electrodes were used to detect DNA methylation.

scholarly journals Paper-Based Screen-Printed Electrodes: A New Generation of Low-Cost Electroanalytical Platforms

Biosensors ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 51 ◽  
Author(s):  
Estefanía Costa-Rama ◽  
María Teresa Fernández-Abedul
Keyword(s):  
Electrochemical Sensors ◽  
Low Cost ◽  
Comprehensive Overview ◽  
Screen Printed Electrodes ◽  
User Friendly ◽  
New Generation ◽  
Main Substrate ◽  
Screen Printed

Screen-printed technology has helped considerably to the development of portable electrochemical sensors since it provides miniaturized but robust and user-friendly electrodes. Moreover, this technology allows to obtain very versatile transducers, not only regarding their design, but also their ease of modification. Therefore, in the last decades, the use of screen-printed electrodes (SPEs) has exponentially increased, with ceramic as the main substrate. However, with the growing interest in the use of cheap and widely available materials as the basis of analytical devices, paper or other low-cost flat materials have become common substrates for SPEs. Thus, in this revision, a comprehensive overview on paper-based SPEs used for analytical proposes is provided. A great variety of designs is reported, together with several examples to illustrate the main applications.

Sign in / Sign up

Export Citation Format

Share Document