Melamine/Polyaniline-Derived Carbons With Record-High Adsorption Capacities For Effective Removal Of Phenolic Compounds From Water
CHEMICAL ENGINEERING JOURNAL(2021)
摘要
Recently, contamination of water resources with phenolic compounds (PCs) is severe. In this study, we firstly prepared nitrogen-enriched porous carbon via pyrolysis of a mixture of melamine and polyaniline. Melamine/polyaniline-derived carbons (MPDCs) were characterized and applied in the adsorption of PCs, like p-nitrophenol (pNP), hydroquinone (HQ) and p-cresol (pC), from water. A selected MPDC700, an MPDC prepared at 700 degrees C, had the highest adsorption capacity for pNP (Q(max): 910 +/- 18 mg/g) and pC, compared with any known material. Based on the adsorption results under wide conditions and characteristics of MPDCs, the plausible adsorption mechanism, such as pi-pi interaction and hydrogen bonding, could be suggested. The best MPDC700 was recyclable for several runs; therefore, can be recommended as a competitive adsorbent to remove PCs from water.
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关键词
Adsorption, P-cresol, Melamine, P-nitrophenol, Polyaniline-derived carbon
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