Electrochemical degradation of benzene in natural water using silver nanoparticle-decorated carbon nanotubes

Autor(es)

Cesarino, Ivana ^[1] ; Cesarino, Vivian ^[1] ; Moraes, Fernando C. ^[1] ; Ferreira, Tanare C. R. ^[1] ; Lanza, Marcos R. V. ^[1] ; Mascaro, Lucia H. ^[2] ; Machado, Sergio A. S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Paulo, Dept Quim, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Chemistry and Physics; v. 141, n. 1, p. 304-309, AUG 15 2013.
• Citações Web of Science: 8

Resumo

In this study, a novel methodology for the electrochemical degradation of benzene in natural water using silver nanoparticle-decorated carbon nanotubes has been investigated. The morphology, the structure, and the electrochemical performance of the multi-walled carbon nanotubes-silver (MWCNT-Ag) nano-composite film were characterised by transmission electron microscopy (TEM), X-ray diffraction (XRD), and cyclic voltammetry (CV), respectively. Electrocatalytic oxidation of benzene in an aqueous solution was studied to evaluate potential applications of the MWCNT-Ag modified glassy carbon (GC) electrode in environmental science. The benzene removal efficiency in natural water containing 10 mg L-1 benzene yielded 77.9% at an applied potential of +2.0 V for 2 h using the MWCNT-Ag-GC electrode. In comparison, the removal efficiency reached only 8.0% with the bare GC electrode, showing the suitability of the MWCNT-Ag nanocomposite modified GC electrode for electro-oxidation of benzene in natural water. (c) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 10/11049-2 - Desenvolvimento e aplicação de sensores eletroquímicos baseados em nanotubos de carbono alinhados para a detecção de interferentes endócrinos em amostras ambientais
• Beneficiário: Fernando Cruz de Moraes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 10/11567-3 - Análise in situ dos subprodutos formados na degradação eletroquímica de hidrocarbonetos monoaromáticos
• Beneficiário: Ivana Cesarino
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado