Cellulose derivatives crosslinked by citric acid on electrode surface as a heavy metal absorption/sensing matrix

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F21%3A63539101" target="_blank" >RIV/70883521:28110/21:63539101 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0927775721011110?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0927775721011110?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2021.127242" target="_blank" >10.1016/j.colsurfa.2021.127242</a>

Result language

angličtina

Original language name

Cellulose derivatives crosslinked by citric acid on electrode surface as a heavy metal absorption/sensing matrix

Original language description

Hypothesis: Modification of cellulose derivatives with citric acid leads to gain in sorption capacity towards metal ions, which has been many times applied for heavy metal sequestration. This work, for the first time, investigated the in-situ coating of a carbon electrode with citric acid-crosslinked cellulose derivatives. The occurrence of crosslinking bonds was revealed using infrared spectroscopy and thermogravimetric analysis, while other features were investigated using electrochemical methods. Experiments: Electrodes were modified by casting of aqueous solutions of cellulose derivatives (hydroxyethyl cellulose, HEC and thermally pre-treated carboxymethyl cellulose, T-CMC) mixed with citric acid (CA) on the electrode surface, followed by thermal treatment (110 °C, 1 h) to reach the requested HEC-CA and T-CMC-CA hydrogels coated on glassy carbon electrodes. Findings: After the absorption of metal cations from solution, the electrodes coated by both HEC-CA and T-CMC-CA exhibited stripping voltammetry peaks for Pb, Cd and Cu, contrary to electrodes prepared without crosslinking. It was also observed that HEC-CA surface change its electrochemical impedance reversibly after deposition and acid-induced removal of Pb2+. Assessment of Pb2+ sensing properties revealed the detection limit of 0.39 mg L−1 and sensitivity of 9.91 μA L mg−1. Therefore, the citric acid-crosslinked cellulose derivatives can be employed for the preparation of cheap and sustainable heavy metal sensors and similar surfaces.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

<a href="/en/project/GJ20-27735Y" target="_blank" >GJ20-27735Y: Nanotechnologies in flow-through electrochemical sensors applied in environmental engineering</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

Colloids and Surfaces A: Physicochemical and Engineering Aspects

ISSN

0927-7757

e-ISSN

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Volume of the periodical

628

Issue of the periodical within the volume

Neuveden

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

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UT code for WoS article

000702815200006

EID of the result in the Scopus database

2-s2.0-85111943087