Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1558523 | New Carbon Materials | 2011 | 6 Pages |
Exfoliated graphite (EG), with good electronic conductivity, was used as an anode material for the electrochemical degradation of methyl orange (MO), an artificial textile wastewater. Through the electrochemical degradation, 98.6% color removal and 58.5% chemical oxygen demand reduction was achieved at a pH of 2.0, a current density of 13 mA·cm−2, an electrolyte (NaCl) concentration of 0.1 mol·dm−3 and an electrolysis time of 20 min. The degradation is based on chemical adsorption and electro-oxidation. MO molecules are first adsorbed on the EG surface by hydrogen bonds between the -OH functional groups on EG and the MO molecules, which are then degraded by electrochemical oxidation. EG can therefore be regarded as an excellent material for the treatment of textile wastewater.