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In this study, the S modified iron-based catalyst (S-Fe@C) for activating peroxydisulfate (PDS) was fabricated by heating the S-MIL-101 (Fe) precursor at 800 degrees C. The resulted S-Fe@C composite mainly consisted of carbon, Fe-0, FeS, FeS2, and Fe3O4 , and showed strong magnetism. Compared with Fe@C obtained from MIL-101 (Fe), the S-Fe@C exhibited much higher performance (1.5 times larger) on PDS activation and the S-Fe@C/PDS could rapidly degrade various organic pollutants in 5 min under the attack of the species of SO4 center dot-, O-1(2), electro-transfer and Fe(IV). The S element in enhancing the PDS activation mainly involved two mechanisms. Firstly, the doped S could speed up the electron transfer efficiency, resulting in a promotion on PDS decomposition; secondly, the S2- S-2(2-) or S-0 could achieve the circulation of Fe2+ and Fe3+, leading to the formation of non-radicals Fe(IV) and O-1(2) . (C) 2021 Elsevier Inc. All rights reserved.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN: 0021-9797
Year: 2021
Volume: 610
Page: 24-34
9 . 9 6 5
JCR@2021
9 . 4 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:117
JCR Journal Grade:1
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 29
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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