期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 403, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2020.123705
关键词
graphitic defect; adsorption; bisphenol A; carbon materials; hydrophobic interaction
资金
- National Key Research and Development Program of China [2018YFC0406400, 2019YFC1907900]
- National Science Foundation of China [51678285, 51908270]
- National Science Foundation of Jiangxi Province [20192BAB213016]
- Key Project of Innovative Talents of Science and Technology of Jiangxi Province [20181BCB18002]
- Fostering Project of National Science and Technology Awards of Jiangxi Province [20192AEI91001]
The discarded cigarette butt derived porous carbon (AC-800) shows high adsorption capacity and rapid reaction rate for BPA, with graphitic defect playing a crucial role in improving adsorptivity. Long-range hydrophobic interaction synergized with short-range dispersion force make a substantial contribution to BPA adsorption on AC-800.
Wastewater features-directed design of an adsorbent is promising but challenging strategy for sustainable remediation of actual bisphenol A (BPA)-polluted water. Herein, we report that the discarded cigarette butt derived porous carbon (AC-800) exhibit high capacity (865 mg/g), rapid reaction rate (186.9 mg/g/min) and outstanding durability for adsorption of BPA. Different from the most reported carbon-based adsorbents, quantitative structure-activity relationship studies unveil that graphitic defect plays a crucial role in the improvement of adsorptivity. Further studies illuminate that pi-pi interactions, electrostatic attraction and hydrogen-bond interaction play a negligible role whereas long-range hydrophobic interaction synergized with short-range dispersion force make a substantial contribution to BPA adsorption on AC-800. Benefited from this unique adsorption mechanism, AC-800 features a remarkable anti-interference capability and realizes the efficient clean-up of BPA from actual wastewater with complex backgrounds. This work sheds new light on mechanistic insight into the BPA adsorption on carbon-based materials and develops a fit-for-purpose designed adsorbent toward green remediation of practical wastewater.
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