Nickel (II) phthalocyanine-tetrasulfonic-Au nanoparticles nanocomposite film for tartrazine electrochemical sensing

Autor(es)

de Lima, Lucas F. ^[1] ; Maciel, Cristiane C. ^[2] ; Ferreira, Andre L. ^[1] ; de Almeida, Jessica C. ^[2] ; Ferreira, Marystela ^[1]

Afiliação do(s) autor(es)

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

^[2] Sao Paulo State Univ Julio de Mesquita Filho UNES, Sorocaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Letters; v. 262, MAR 1 2020.
• Citações Web of Science: 0

Resumo

In this work, we report the analytical detection of tartrazine through differential pulse voltammetry (DPV) using gold nanoparticles (AuNPs) and Nickel(II)-phthalocyanine-tetrasulfonic (NiTsPc). The Layer-by-Layer (LbL) film was constructed following the Au-(AuNPs-PAH/NiTsPc)(5) architecture. The electric current characteristics of this sensor were verified by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). As a result of these measurements, a large and well-defined redox peak was obtained, indicating a significant enhancement in electron transfer. Excellent sensing performance was achieved with high sensitivity (25.79 +/- 0.47 (mu A cm(-2)) (mu mol L-1)(-1) and 8.80 +/- 0.36 (mu A cm(-2)) (mu mol L-1)(-1)), low limit of detection (0.055 mu mol L-1 and 0.122 mu mol L-1), and excellent anti-interference and repeatability behavior. The Au electrode modified with the LbL film was also evaluated in commercially available juice samples with a recovery range from 97.74% to 108.26%. (C) 2019 Elsevier B.V. All rights reserved. (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