Screen-printed amalgam electrodes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00544959" target="_blank" >RIV/61388955:_____/21:00544959 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/21:10436728

Result on the web

<a href="http://hdl.handle.net/11104/0321745" target="_blank" >http://hdl.handle.net/11104/0321745</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.snb.2021.130583" target="_blank" >10.1016/j.snb.2021.130583</a>

Result language

angličtina

Original language name

Screen-printed amalgam electrodes

Original language description

Silver amalgam screen-printed electrodes (AgA-SPEs) were designed, prepared and tested for the first time as perspective representatives among SPEs that allow measuring at high negative potentials. For this purpose, the precise electrochemical (coulometric) preparation procedure for mercury deposition at the silver working electrode surface of the commercial silver-SPE was developed and a universal method of preparing amalgam electrodes from different metal-SPEs was described. An optimal electrolyzer construction for the mercury deposition, electrolyte composition, electrolysis potential, and a way to activate the electrode surface for its uniform coverage by mercury were proposed. The effect of the mercury content in amalgam on the potential of hydrogen evolution (PHE) at AgA-SPEs was investigated. The maximum PHE value (−1979 ± 4 mV, RSD = 0.17 %, N = 5) was found on AgA-SPE with 50 % (w/w) of Hg content in 0.1 mol L−1 NaOH, which is more negative than in the case of the original silver-SPE for 387 mV (−1592 ± 12 mV, RSD = 0.69 %, N = 5). Determination of the iodine content in iodinated table salt was used for the AgA-SPEs practical testing. Measurement parameters were optimized for three electrochemical cell arrangements: i) the electrodes area of AgA-SPE was covered by 50 μL of the sample solution and differential pulse voltammetric (DPV) measurements were carried out, ii) 3-electrode batch arrangement with only working electrode from AgA-SPE connected with an analyzer for DPV-measurements, iii) amperometric measurements in a flow system. The results of iodine analysis by all three methods were consistent with the manufacturer declared values.nn

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/GA20-01589S" target="_blank" >GA20-01589S: New strategies for improving sensing properties of novel electrode materials via their surface pretreatment or modification</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Sensors and Actuators B - Chemical

ISSN

0925-4005

e-ISSN

0925-4005

Volume of the periodical

347

Issue of the periodical within the volume

NOV 2021

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

130583

UT code for WoS article

000700594000004

EID of the result in the Scopus database

2-s2.0-85112802519