A ratiometric electrochemical sensor for simultaneous detection of multiple heavy metal ions based on ferrocene-functionalized metal-organic framework
Abstract
trGNO/Fc-NH2-UiO-66 with excellent electrochemical property and stability was prepared. A ratiometric electrochemical detection strategy was proposed based on this composite. The functionalized NH2-UiO-66 has been used as both electrochemical sensing interface and internal reference probe. The ratiometric method has significantly improved reproducibility and reliability. Sensitive, reliable and simultaneous detection of Cd2+, Pb2+ and Cu2+ was realized.
- Publication:
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Sensors and Actuators B: Chemical
- Pub Date:
- May 2020
- DOI:
- 10.1016/j.snb.2020.127756
- Bibcode:
- 2020SeAcB.31027756W
- Keywords:
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- Ferrocenecarboxylic acid;
- Functionalized metal-organic framework;
- Ratiometric electrochemical sensing;
- Heavy metal ion;
- Simultaneous detection