| Texto completo | |
| Autor(es): |
Bonfim, Kely Silveira
;
Peixoto, Murilo dos Santos
;
do Carmo, Devaney Ribeiro
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CHEMISTRYSELECT; v. 10, n. 2, p. 12-pg., 2025-01-01. |
| Resumo | |
A novel functional platform comprising graphene oxide (GO) and a PAMAM dendrimer (GO-PAMAM) is presented herein, subsequently modified with Ce(III) ions and potassium hexacyanoferrate (III) to form a complex incorporating hexacyanoferrate (II/III) redox species. The resulting hybrid material was characterized by different spectroscopic techniques such as X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and cyclic voltammetry studies. Electrochemical assessments, specifically cyclic voltammetry, demonstrated the suitability of the modified electrode for the electrocatalytic detection of l-dopamine. A linear response was observed from 2.0 x 10(-6) to 4.0 x 10(-5) mol L-1. The limit of detection was 4.09 x 10(-7) mol L-1 with a standard deviation of +/- 3% (n = 3), while amperometric sensitivity was determined as 195.28 mA/mol L-1. (AU) | |
| Processo FAPESP: | 15/20397-8 - Modificação da superfície do grafeno com um dendrímero: Um estudo de materiais híbridos nanoestruturados para aplicações químicas e biológicas |
| Beneficiário: | Devaney Ribeiro Do Carmo |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |