Functionalized Carbon Nanotubes for Chemical Sensing: Electrochemical Detection of Hydrogen Isotopes
| Autor: | Ioan Stamatin, Stefan Marian Iordache, Arcadie Sobetkii, Cristiana Eugenia Ana Grigorescu, Nicolae Catalin Zoita, Eusebiu Ilarian Ionete, Ana-Maria Iordache |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
impedance spectroscopy
Materials science Aqueous solution Hydrogen chemistry.chemical_element Surfaces and Interfaces Carbon nanotube palladium Engineering (General). Civil engineering (General) cyclic voltammetry Surfaces Coatings and Films Dielectric spectroscopy law.invention coating by dropcast hydrogen isotope detection CNT functionalization chemistry Chemical engineering law Desorption Electrode Materials Chemistry TA1-2040 Cyclic voltammetry Palladium |
| Zdroj: | Coatings, Vol 11, Iss 968, p 968 (2021) Coatings Volume 11 Issue 8 |
| ISSN: | 2079-6412 |
| DOI: | 10.3390/coatings11080968 |
| Popis: | In this study, we propose a palladium-functionalized CNT composite working as a sensitive material to evaluate the deuterium concentration in aqueous samples. The sensitive material was prepared by the deposition of Pd nanoparticles onto MWCNT–OH by the micellization process. A modified electrode was prepared by drop casting 60 μL of Pd-decorated MWCNT suspension on a clean glassy carbon electrode surface. The sensing behavior was investigated in a series of deuterium-enriched solutions ranging from 25 to 10,000 ppm. We performed cyclic voltammetry and impedance spectroscopy studies on the samples. The process is quasi-reversible with the reduction curve more pronounced than the oxidation curve, which indicates a low tendency to desorption for the hydrogen atoms. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|