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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.)

Detection of hydrogen peroxide (H2O2) using a colorimetric sensor based on cellulose nanowhiskers and silver nanoparticles

Full text
Author(s):
Teodoro, Kelcilene B. R. [1, 2] ; Migliorini, Fernanda L. [2] ; Christineili, Wania A. [2] ; Correa, Daniel S. [1, 2]
Total Authors: 4
Affiliation:
[1] Fed Univ Sao Carlos UFSCar, Ctr Exact Sci & Technol, Dept Chem, PPGQ, BR-13565905 Sao Carlos, SP - Brazil
[2] Embrapa Instrumentacao, Nanotechnol Natl Lab Agr, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Carbohydrate Polymers; v. 212, p. 235-241, MAY 15 2019.
Web of Science Citations: 3
Abstract

Hydrogen peroxide (H2O2) is an important compound for several industrial sectors, but it becomes harmful to human health under high concentrations. Thus, the development of simple, low cost and fast analytical methods capable to detect and monitor H2O2 is fundamentally important. In the present study, we report a simple route for synthesizing silver nanoparticles (AgNPs) in the presence of a nanostructured polysaccharide (cellulose nanowhiskers) to produce a hybrid material, which was employed as a colorimetric probe for H2O2 detection. Our results revealed that AgNPs tend to experience catalytic decomposition when exposed to H2O2, causing a decrease of AgNPs absorption band at 410 nm in accordance with H2O2 concentration. This decrease was linearly dependent on H2O2 concentration (in the ranges 0.01-30 mu M and 60-600 mu M), yielding limits of detection of 0.014 mu M and 112 mu M, respectively. The easy-to-interpret H2O2 sensor also proved to be suitable for real samples analysis even in the presence of other interfering substances. (AU)

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: 17/12174-4 - Development of hybrid polymer nanofibers for agricultural applications
Grantee:Daniel Souza Corrêa
Support Opportunities: Regular Research Grants
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