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Detection of hydrogen peroxide (H2O2) using a colorimetric sensor based on cellulose nanowhiskers and silver nanoparticles.
Teodoro, Kelcilene B R; Migliorini, Fernanda L; Christinelli, Wania A; Correa, Daniel S.
Afiliação
  • Teodoro KBR; Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970, São Carlos, SP, Brazil; PPGQ, Department of Chemistry, Center for Exact Sciences and Technology, Federal University of São Carlos (UFSCar), 13565-905, São Carlos, SP, Brazil.
  • Migliorini FL; Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970, São Carlos, SP, Brazil.
  • Christinelli WA; Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970, São Carlos, SP, Brazil.
  • Correa DS; Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970, São Carlos, SP, Brazil; PPGQ, Department of Chemistry, Center for Exact Sciences and Technology, Federal University of São Carlos (UFSCar), 13565-905, São Carlos, SP, Brazil. Electronic address: daniel.correa@embr
Carbohydr Polym ; 212: 235-241, 2019 May 15.
Article em En | MEDLINE | ID: mdl-30832853
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 µM and 60-600 µM), yielding limits of detection of 0.014 µM and 112 µM, respectively. The easy-to-interpret H2O2 sensor also proved to be suitable for real samples analysis even in the presence of other interfering substances.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Carbohydr Polym Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Carbohydr Polym Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido