CuO@Cu/Ag/MWNTs/sponge electrode-enhanced pollutant removal in dielectric barrier discharge (DBD) reactor.
Chemosphere
; 229: 273-283, 2019 Aug.
Article
em En
| MEDLINE
| ID: mdl-31078884
ABSTRACT
In this study, a sponge modified by multi-walled carbon nanotubes (MWNTs) was used as sheet support for the adsorption of CuO@Cu and Ag nanowires to prepare a CuO@Cu/Ag/MWNTs/sponge electrode. Similar to their use in a dielectric barrier discharge (DBD) reactor, the MWNTs changed the conductivity and water absorptivity of the modified electrode, whereas the CuO@Cu and Ag nanowires significantly enhanced the tip effect to increase discharge. The optimal ratio of the AgCuO@Cu nanowires was 53â¯at a total adsorbed concentration of 0.8â¯gâ¯L-1. Compared with CuO@Cu and Ag nanowires were separately adsorbed on the MWNTs/sponge, and the CuO@Cu/Ag/MWNTs/sponges recorded higher current response, lower discharge inception voltage, and higher removal efficiency of phenol and 2,4,5-trichlorobiphenyl (PCB29) through their degradation. The removal efficiency reached 100% within 30â¯min of the reaction for the degradation of phenol and 65.1% within 60â¯min of the reaction for the degradation of PCB29 at an input voltage of 30â¯V. These results show that the CuO@Cu/Ag/MWNTs/sponge structure has significant potential for use in the DBD reactor to improve the discharge efficiency of the system and reduce energy consumption, and can be further extended to other types of plasma reactors.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Prata
/
Cobre
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Nanotubos de Carbono
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Eletroquímica
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Poluentes Ambientais
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article