Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5431746 | Carbon | 2017 | 12 Pages |
A promising activated iron-doped carbon aerogel (AFeC) possessing high adsorption capacity and “self-cleaning” ability via generated OH radicals was fabricated and applied to remove dimethyl phthalate (DMP). Around 90% of the DMP (50Â ppm) was first adsorbed on the surface of a DMP-imprinted AFeC electrode and then further catalytically oxidized by surface OH produced via an electro-Fenton reaction. DMP removal of 98% can be achieved in 150Â min in the heterogeneous electro-Fenton process. The addition of Fe0 favoured the generation of graphene sheets of amorphous carbon and then provided strong Ï-Ï interaction with aromatic pollutants. In addition to iron, a DMP molecular template was also introduced to AFeC to create special molecular imprinting affinity for DMP. The CO2-N2 activation treatment increased the porosity and enriched the hydroxyl and quinone groups (C-O and C=O). The high DMP adsorption capacity of the DMP-imprinted AFeC electrode can be ascribed to the following mechanism: (i) electrostatic interaction; (ii) hydrophobic interaction; (iii) Ï-Ï electron-donor-acceptor interactions; (iv) molecular imprinting affinity between template molecules and imprinted sites. Thus, this carbon-based material is promising to be potentially applied in the removal of DMP containing wastewater through integrated adsorption and degradation.
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