| Texto completo | |
| Autor(es): |
Baccarin, Marina
;
Ciciliati, Mariani A.
;
Oliveira, Osvaldo N.
;
Cavalheiro, Eder T. G.
;
Raymundo-Pereira, Paulo A.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Materials Science & Engineering C-Materials for Biological Applications; v. 114, p. 8-pg., 2020-09-01. |
| Resumo | |
Rapid, on-site detection of emerging pollutants is critical for monitoring health threats and the environment, especially if performed through autonomous systems. In this paper, we report on a new design of a complete electrochemical system whose working (WE), auxiliary (AE) and reference (RE) electrodes were obtained on a pen (PEN Sensor) made with graphite:polyurethane (GPUE). Working electrodes were decorated with spherical, ca. 200 nm silver nanoparticles (AgNPs) reduced on graphite using the polyol method. Differential pulse voltammetry (DPV) was used to detect bisphenol-A (BPA) in a linear range from 2.5 to 15 mu mo L-1 with detection limit of 0.24 mu moL L (-1). The PEN Sensor could also detect bisphenol-A in tap and river water samples, with satisfactory reproducibility and repeatability, while common interferents did not affect electrooxidation of bisphenol-A. The high sensitivity and rapid detection are suitable for real-time analysis and in loco monitoring of emerging pollutants. With their robustness and versatility, PEN Sensors such as those fabricated here may be integrated into futuristic smart robotic systems. (AU) | |
| Processo FAPESP: | 13/14262-7 - Filmes nanoestruturados de materiais de interesse biológico |
| Beneficiário: | Osvaldo Novais de Oliveira Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 16/01919-6 - Design e fabricação de dispositivos flexíveis nanoestruturados para detecção de biomarcadores |
| Beneficiário: | Paulo Augusto Raymundo Pereira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 17/04211-7 - Desenvolvimento de tintas à base de nanopartículas metálicas e polímeros para construção de eletrodos compósitos convencional e impresso e suas aplicações |
| Beneficiário: | Éder Tadeu Gomes Cavalheiro |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |