Metal-free cysteamine-functionalized graphene alleviates mutual interferences in heavy metal electrochemical detection

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F23%3A10252579" target="_blank" >RIV/61989100:27640/23:10252579 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/23:73620145 RIV/61989592:15640/23:73620145 RIV/61989100:27740/23:10252579

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2023/GC/D2GC02978B" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2023/GC/D2GC02978B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d2gc02978b" target="_blank" >10.1039/d2gc02978b</a>

Result language

angličtina

Original language name

Metal-free cysteamine-functionalized graphene alleviates mutual interferences in heavy metal electrochemical detection

Original language description

Heavy metal pollutants are of great concern to environmental monitoring due to their potent toxicity. Electrochemical detection, one of the main techniques, is hindered by the mutual interferences of various heavy metal ions in practical use. In particular, the sensitivity of carbon electrodes to Cd2+ ions (one of the most toxic heavy metals) is often overshadowed by some heavy metals (e.g. Pb2+ and Cu2+). To mitigate interference, metallic particles/films (e.g. Hg, Au, Bi, and Sn) typically need to be embedded in the carbon electrodes. However, these additional metallic materials may face issues of secondary pollution and unsustainability. In this study, a metal-free and sustainable nanomaterial, namely cysteamine covalently functionalized graphene (GSH), was found to lead to a 6-fold boost in the Cd2+ sensitivity of the screen-printed carbon electrode (SPCE), while the sensitivities to Pb2+ and Cu2+ were not influenced in simultaneous detection. The selective enhancement could be attributed to the grafted thiols on GSH sheets with good affinity to Cd2+ ions based on Pearson&apos;s hard and soft acid and base principle. More intriguingly, the GSH-modified SPCE (GSH-SPCE) featured high reusability with extended cycling times (23 times), surpassing the state-of-art SPCEs modified by non-covalently functionalized graphene derivatives. Last, the GSH-SPCE was validated in tap water.

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

—

OECD FORD branch

10400 - Chemical sciences

Project

<a href="/en/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologies for Future</a><br>

Continuities

—

Publication year

2023

Confidentiality

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

Name of the periodical

Green Chemistry

ISSN

1463-9262

e-ISSN

1463-9270

Volume of the periodical

25

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

1647-1657

UT code for WoS article

000928598900001

EID of the result in the Scopus database

2-s2.0-85148467352