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Hydrothermal Synthesis of Nitrogen, Boron Co-Doped Graphene with Enhanced Electro-Catalytic Activity for Cymoxanil Detection
| Content Provider | MDPI |
|---|---|
| Author | Florina, Pogăcean Varodi, Codruța Coros, Maria Magerusan, Lidia Staden, Raluca-Ioana Stefan-Van Pruneanu, Stela |
| Copyright Year | 2021 |
| Description | A sample of nitrogen and boron co-doped graphene (NB-Gr) was obtained by the hydrothermal method using urea and boric acid as doping sources. According to XRD analysis, the NB-Gr sample was formed by five-layer graphene. In addition, the XPS analysis confirmed the nitrogen and boron co-doping of the graphene sample. After synthesis, the investigation of the electro-catalytic properties of the bare (GC) and graphene-modified electrode (NB-Gr/GC) towards cymoxanil detection (CYM) was performed. Significant differences between the two electrodes were noticed. In the first case (GC) the peak current modulus was small (1.12 × $10^{−5}$ A) and appeared in the region of negative potentials (−0.9 V). In contrast, when NB-Gr was present on top of the GC electrode it promoted the transfer of electrons, leading to a large peak current increase (1.65 × $10^{−5}$ A) and a positive shift of the peak potential (−0.75 V). The NB-Gr/GC electrode was also tested for its ability to detect cymoxanil from a commercial fungicide (CURZATE MANOX) by the standard addition method, giving a recovery of 99%. |
| Starting Page | 6630 |
| e-ISSN | 14248220 |
| DOI | 10.3390/s21196630 |
| Journal | Sensors |
| Issue Number | 19 |
| Volume Number | 21 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-10-05 |
| Access Restriction | Open |
| Subject Keyword | Sensors Nitrogen Boron Co-doped Graphene Cymoxanil Electrochemical Detection |
| Content Type | Text |
| Resource Type | Article |
