期刊
NEW JOURNAL OF CHEMISTRY
卷 46, 期 36, 页码 17223-17234出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nj02885a
关键词
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资金
- National Natural Science Foundation of China [51908432]
- Natural Science Foundation of Hubei Province, China [2018CFB397]
The study found that Cu-doped deactivated magnetic loofah biochar can serve as a peroxymonosulfate (PMS) activator to effectively remove tetracycline. The catalyst exhibits high efficiency and stability, and can be used in a wide pH range and in the presence of coexisting anions. The research also provides insight into the possible degradation mechanism and reusing waste biochar catalysts.
Biochar emerged as a promising material due to its high efficiency and tunable physicochemical properties. In order to improve the economic applicability of biochar catalysts, we attempted to apply formed Cu-doped deactivated magnetic loofah biochar (Cu-Fe-LBC) as a peroxymonosulfate (PMS) activator to remove tetracycline (TC). The catalyst exhibited high activation of PMS and high stability with the TC removal of 97.6%. The chemical composition and groups on the catalyst surface confirmed the presence of copper ions on the biochar by complexation with COO-. Analysis of quenching experiments and electron paramagnetic resonance indicated the significance of HO and O-1(2) in TC degradation. The catalytic system had high catalytic efficiency with a wide pH range and coexisting anions. The possible degradation mechanism was proposed. Moreover, the research provides an insight into the PMS activation by reusing waste biochar catalysts.
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