Electrochemical sensor for propylparaben using hybrid Layer-by-Layer films composed of gold nanoparticles, poly(ethylene imine) and nickel(II) phthalocyanine tetrasulfonate

Autor(es)

de Lima, Lucas F. ^[1] ; Pereira, Elisabete A. ^[1] ; Ferreira, Marystela ^[1]

Afiliação do(s) autor(es)

^[1] Fed Univ Sao Carlos UFSCar, Ctr Sci & Technol Sustainabil CCTS, BR-18052780 Sorocaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SENSORS AND ACTUATORS B-CHEMICAL; v. 310, MAY 1 2020.
• Citações Web of Science: 0

Resumo

Electroanalytical detection of propylparaben (ProP) using gold nanoparticles-electrodeposited onto indium-finoxide electrode (AuNP-ITO) functionalized with PEI (poly(ethylene imine)) and NiTsPc (nickel(II) phthalocyanine tetrasulfonate) in the film (ITO-AuNPs-(PEI/NiTsPc)(3), was studied to verify the viability of a modified electrode (non-enzymatic) using Differential Pulse Voltammetry (DPV). It was possible to verify that gold nanoparticle-electrodeposited, which showed average diameters of 72.97 +/- 1.60 nm, had electroactive area and increased conductivity with (ITO-AuNPs-(PEI/NiTsPc)(3) in comparison with and the electrode of bare ITO, ITO-(PEI/NiTsPc)(3) and ITO-AuNPs, according to Cyclic Voltammetry (CV). The response obtained by DPV in 0.1 mol L-1 PBS (pH 7.0) to detect ProP in cosmetic with a linear range from 2.0 to 20.0 x 10(-6) mol L-1, the limit of detection (LD) obtained was 8.01 x 10(-8) mol L-1 and 2.67 x 10(-7) mol L-1 for the limit of quantification (LQ). Moreover, the sensor obtained the same performance when statistically compared to capillary electrophoresis (CE). (AU)

• Processo FAPESP: 14/15093-7 - Estudos de sistemas nanoestruturados por ressonância plasmônica de superfície (SPR): aplicações em biossensoriamento
• Beneficiário: Celina Massumi Miyazaki
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/19387-0 - Desenvolvimento de filmes nanoestruturados automontados (layer-by-layer) e langmuir-blodgett (lb) incorporando emodina para sistemas carreadores
• Beneficiário: Marystela Ferreira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/04061-8 - Filmes automontados de polipirrol e nanopartículas de magnetita na determinação analítica de parabenos
• Beneficiário: Lucas Felipe de Lima
• Modalidade de apoio: Bolsas no Brasil - Mestrado