Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination

In this paper, a dicyandiamide-impregnated mesoporous carbon (N-CMK-3), electrochemically modified in situ with lead film (Pb-N-CMK-3), was tested as an electrode material for U(VI) ultratrace determination. The prepared carbon material was characterized by XRD, SEM-EDX, Raman, FT-IR, XPS analysis a...

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Autores principales:	Katarzyna Tyszczuk-Rotko, Rafał Olchowski, Jędrzej Kozak, Olga Sekerzh-Zenkovich, Ryszard Dobrowolski
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dicyandiamide-impregnated mesoporous carbon electrochemically lead film deposited voltammetric sensor ultratrace U(V) determination Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/2080ab03a7254b5faf5d2cca701f4917
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spelling	oai:doaj.org-article:2080ab03a7254b5faf5d2cca701f49172021-11-11T18:03:59ZModified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination10.3390/ma142164901996-1944https://doaj.org/article/2080ab03a7254b5faf5d2cca701f49172021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6490https://doaj.org/toc/1996-1944In this paper, a dicyandiamide-impregnated mesoporous carbon (N-CMK-3), electrochemically modified in situ with lead film (Pb-N-CMK-3), was tested as an electrode material for U(VI) ultratrace determination. The prepared carbon material was characterized by XRD, SEM-EDX, Raman, FT-IR, XPS analysis and nitrogen sorption measurements. The changes of electrochemical properties of glassy carbon electrodes (GCE) after the N-CMK-3 and Pb-N-CMK-3 modification were studied using CV and EIS methods. The modification of the GCE surface by the N-CMK-3 material and Pb film increases the electroactive area of the electrode and decreases the charge transfer residence and is likely responsible for the electrochemical improvement of the U(VI) analytical signal. Using square-wave adsorptive stripping voltammetry (SWAdSV), two linear calibration ranges extending from 0.05 to 1.0 nM and from 1.0 to 10.0 nM were observed, coupled with the detection and quantification limits of 0.014 and 0.047 nM, respectively. The Pb-N-CMK-3/GCE was successfully applied for U(VI) determination in reference materials (estuarine water SLEW-3 and trace elements in natural water SRM 1640a).Katarzyna Tyszczuk-RotkoRafał OlchowskiJędrzej KozakOlga Sekerzh-ZenkovichRyszard DobrowolskiMDPI AGarticledicyandiamide-impregnated mesoporous carbonelectrochemically lead film depositedvoltammetric sensorultratrace U(V) determinationTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6490, p 6490 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dicyandiamide-impregnated mesoporous carbon electrochemically lead film deposited voltammetric sensor ultratrace U(V) determination Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	dicyandiamide-impregnated mesoporous carbon electrochemically lead film deposited voltammetric sensor ultratrace U(V) determination Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Katarzyna Tyszczuk-Rotko Rafał Olchowski Jędrzej Kozak Olga Sekerzh-Zenkovich Ryszard Dobrowolski Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination
description	In this paper, a dicyandiamide-impregnated mesoporous carbon (N-CMK-3), electrochemically modified in situ with lead film (Pb-N-CMK-3), was tested as an electrode material for U(VI) ultratrace determination. The prepared carbon material was characterized by XRD, SEM-EDX, Raman, FT-IR, XPS analysis and nitrogen sorption measurements. The changes of electrochemical properties of glassy carbon electrodes (GCE) after the N-CMK-3 and Pb-N-CMK-3 modification were studied using CV and EIS methods. The modification of the GCE surface by the N-CMK-3 material and Pb film increases the electroactive area of the electrode and decreases the charge transfer residence and is likely responsible for the electrochemical improvement of the U(VI) analytical signal. Using square-wave adsorptive stripping voltammetry (SWAdSV), two linear calibration ranges extending from 0.05 to 1.0 nM and from 1.0 to 10.0 nM were observed, coupled with the detection and quantification limits of 0.014 and 0.047 nM, respectively. The Pb-N-CMK-3/GCE was successfully applied for U(VI) determination in reference materials (estuarine water SLEW-3 and trace elements in natural water SRM 1640a).
format	article
author	Katarzyna Tyszczuk-Rotko Rafał Olchowski Jędrzej Kozak Olga Sekerzh-Zenkovich Ryszard Dobrowolski
author_facet	Katarzyna Tyszczuk-Rotko Rafał Olchowski Jędrzej Kozak Olga Sekerzh-Zenkovich Ryszard Dobrowolski
author_sort	Katarzyna Tyszczuk-Rotko
title	Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination
title_short	Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination
title_full	Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination
title_fullStr	Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination
title_full_unstemmed	Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination
title_sort	modified mesoporous carbon material (pb-n-cmk-3) obtained by a hard-templating route, dicyandiamide impregnation and electrochemical lead particles deposition as an electrode material for the u(vi) ultratrace determination
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2080ab03a7254b5faf5d2cca701f4917
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Modified Mesoporous Carbon Material (Pb-N-CMK-3) Obtained by a Hard-Templating Route, Dicyandiamide Impregnation and Electrochemical Lead Particles Deposition as an Electrode Material for the U(VI) Ultratrace Determination

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