Your browser doesn't support javascript.
loading
Electrochemical synthesis of Prussian blue from iron impurities in 3D-printed graphene electrodes: Amperometric sensing platform for hydrogen peroxide.
Rocha, Raquel G; Stefano, Jessica S; Cardoso, Rafael M; Zambiazi, Priscilla J; Bonacin, Juliano A; Richter, Eduardo M; Munoz, Rodrigo A A.
Afiliação
  • Rocha RG; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil.
  • Stefano JS; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil.
  • Cardoso RM; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil.
  • Zambiazi PJ; Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, SP, Brazil.
  • Bonacin JA; Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, SP, Brazil.
  • Richter EM; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil.
  • Munoz RAA; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil. Electronic address: munoz@ufu.br.
Talanta ; 219: 121289, 2020 Nov 01.
Article em En | MEDLINE | ID: mdl-32887031
This communication shows the electrochemical synthesis of Prussian blue (PB) films on additive manufactured (3D-printed) electrodes from iron impurities found at the graphene-polylactic acid (G/PLA) substrate and its application as a highly selective sensor for H2O2. The 3D-printed G/PLA electrode was immersed in dimethylformamide for 30 min to exposure the iron impurities within the PLA matrix. Next, cyclic voltammograms (200 cycles) in the presence of potassium ferricyanide in 0.1 mol L-1 KCl + 0.01 mol L-1 HCl were performed to grow the PB films. The sensing properties of this novel PB/G/PLA platform were evaluated for the amperometric detection of H2O2 using batch-injection analysis, with a limit of detection of 0.56 µmol L-1 under the application of 0.0 V (vs Ag/AgCl/KClsat.). The applicability of the sensor was demonstrated for the analysis of milk samples (10-fold diluted in the supporting electrolyte), resulting in proper recovery values (94-101%).
Assuntos
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Grafite / Peróxido de Hidrogênio Idioma: En Revista: Talanta Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Grafite / Peróxido de Hidrogênio Idioma: En Revista: Talanta Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda