期刊
ELECTROCATALYSIS
卷 10, 期 3, 页码 272-276出版社
SPRINGER
DOI: 10.1007/s12678-019-00525-6
关键词
TiO2 self-doping; Electrochemically activated sulfate; Electrochemical advanced oxidation processes; Dye oxidation; Persulfate
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [001]
- FAPESP [2014/50945-4, 2013/16930-7]
- CNPq [428014/2018-6]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [14/50945-4] Funding Source: FAPESP
This work presents a novel approach for cathodically polarized TiO2 nanotube electrodes in electrochemical advanced oxidation processes generating sulfate radicals. Although TiO2 do not offer electrochemical response at the anodic region in the dark, its simple self-doping can enable oxidation capacity. Cathodically polarized TiO2 electrode (CP-TNT) was applied in the electrolysis of p-nitrosodimethylaniline dye in sulfate and nitrate aqueous electrolytes, showing much better decolorization efficiency in the presence of sulfate ions. Another evidence of SO4 center dot- generation was the detection of persulfate ions (SO4 center dot-+SO4 center dot-S2O82-) formed during bulk electrolysis of a sulfate aqueous solution (38molL(-1) S2O82- after 30min). These results open the way for application of CP-TNT electrodes in EAOPs as an alternative for highly cost anodes for electrochemical generation of active sulfate species for degradation of organic contaminants.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据