Development and evaluation of gas diffusion electrodes (GDE) for generation of H2O2 in situ and their application in the degradation of reactive blue 19 dye

Quimica nova

Sotomayor, Maria Del Pilar T.¹  Bertazzoli, Rodnei²  Beati, André A. G. F.³  Lanza, Marcos R. V.³  Rocha, Robson S.³  Reis, Rafael M.³ 

[1] Universidade Estadual Paulista, Araraquara, Brasil;Universidade Estadual de Campinas, Campinas, Brasil;Universidade de São Paulo, São Carlos, Brasil

关键词: gas diffusion electrode;    hydrogen peroxide;    Reactive Blue 19 dye.;   

DOI  :  10.1590/S0100-40422012001000014

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work reportsthe development of GDE for electrogeneration of H2O2 andtheir application in the degradation process of Reactive Blue 19 dye. GDE producedby carbon black with 20% polytetrafluoroethylene generated up to 500 mg L-1of H2O2 through the electrolysis of acidic medium at -0.8V vs Ag/AgCl. Reactive Blue 19 dye was degraded most efficiently with H2O2electrogenerated in the presence of Fe(II) ions, leading to removal of 95% ofthe original color and 39% of TOC at -0.8 V vs Ag/AgCl.

【 授权许可】

CC BY