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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.)

GREEN-SYNTHESIZED GOLD NANOPARTICLES SUPPORTED ON CELLULOSE NANOWHISKERS FOR EASY-TO-INTERPRET COLORIMETRIC DETECTION OF CADMIUM (II)

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Author(s):
Migliorini, Fernanda L. [1] ; Teodoro, Kelcilene B. R. [1, 2] ; Correa, Daniel S. [1, 2]
Total Authors: 3
Affiliation:
[1] Embrapa Instrumentacao, Nanotechnol Natl Lab Agr LNNA, BR-13560970 Sao Carlos, SP - Brazil
[2] Fed Univ Sao Carlos UFSCar, PPGQ, Dept Chem, Ctr Exact Sci & Technol, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: CELLULOSE CHEMISTRY AND TECHNOLOGY; v. 54, n. 5-6, p. 407-413, MAY-JUN 2020.
Web of Science Citations: 0
Abstract

In the present study, we report on a simple and practical optical sensor based on cellulose nanowhiskers functionalized with gold nanoparticles (CNW/AuNP), which was applied as a colorimetric sensor for detecting Cd (II). Our results revealed that a simple and fast synthesis was capable to produce small and well-controlled CNW/AuNP nanocomposites. These nanocomposites can bind to Cd (II), owing to the citrate anions present on the AuNP surface, and this process is followed by an optical change in the surface plasmon resonance (SPR) band of AuNPs. As a consequence, a linear decrease of absorbance was verified as the Cd (II) concentration increased in the range 500-2000 nM, yielding a detection limit of 60 nM. Our sensor also proved to be suitable for real samples analyses, even in the presence of other interfering substances, indicating its potential for Cd (II) colorimetric sensing applications. (AU)

FAPESP's process: 17/21791-7 - Development of electrochemical and colorimetric biosensors for detecting micotoxins
Grantee:Fernanda Lanzoni Migliorini
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/09414-6 - Implementation of an electronic tongue by flow detection of drinking water contaminants
Grantee:Fernanda Lanzoni Migliorini
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/21184-5 - Nanocomposites from cellulose nanocrystals electrospun fibers for the development of polymeric sensors
Grantee:Kelcilene Bruna Teodoro Costa
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/12174-4 - Development of hybrid polymer nanofibers for agricultural applications
Grantee:Daniel Souza Corrêa
Support Opportunities: Regular Research Grants