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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

Full text
Author(s):
de Lima, Lucas F. [1] ; Maciel, Cristiane C. [2] ; Ferreira, Andre L. [1] ; de Almeida, Jessica C. [2] ; Ferreira, Marystela [1]
Total Authors: 5
Affiliation:
[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
Total Affiliations: 2
Document type: Journal article
Source: Materials Letters; v. 262, MAR 1 2020.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 14/15093-7 - Study of nanostructured systems by surface plasmon resonance (SPR): applications in biosensing
Grantee:Celina Massumi Miyazaki
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 16/19387-0 - LbL (LAYER-BY-LAYER) and Langmuir-Blodgett (LB) nanostructured films with emodin for systems carriers.
Grantee:Marystela Ferreira
Support Opportunities: Regular Research Grants
FAPESP's process: 18/04061-8 - Layer by layer films of polypyrrol and magnetite nanoparticles in the analytical determination of parabens
Grantee:Lucas Felipe de Lima
Support Opportunities: Scholarships in Brazil - Master