Publication: Novel N, F co-doped carbon dots to detect sulfide and cadmium ions with high selectivity and sensitivity based on a "turn-off-on" mechanism
Дата
2022
Авторы
Zeng, Y.
Xu, Z.
Liu, A.
Cai, H.
Qu, J.
Journal Title
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Volume Title
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Аннотация
© 2022In this work, novel nitrogen, fluorine co-doped carbon dots (N, F-CDs) have been synthesized by a hydrothermal method using melamine and 2, 4-difluorobenzoic acid as precursors. The obtained N, F-CDs exhibit excellent optical stability with high quantum yield. The N, F-CDs are highly selective to S2− detection by forming N, F-CDs@S2−, with a detection limit of 168 nM. The N, F-CDs@S2− were shown to be a highly selective Cd2+ detector by forming CdS, with a detection limit of 340 nM. The fluorescence quenching of N, F-CDs by S2− occurs via a static quenching mechanism and the fluorescence recovery was due to the high affinity of Cd2+ to S2−. The fluorescent sensor was used to determine Cd2+ and S2− in tap waters with satisfactory results.
Описание
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Цитирование
Novel N, F co-doped carbon dots to detect sulfide and cadmium ions with high selectivity and sensitivity based on a "turn-off-on" mechanism / Zeng, Y. [et al.] // Dyes and Pigments. - 2022. - 203. - 10.1016/j.dyepig.2022.110379
URI
https://www.doi.org/10.1016/j.dyepig.2022.110379
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https://openrepository.mephi.ru/handle/123456789/27879
https://www.scopus.com/record/display.uri?eid=2-s2.0-85129910866&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000799978600002
https://openrepository.mephi.ru/handle/123456789/27879