Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 440, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2022.129723
Keywords
FeSx@MoS2; MIL-88A(Fe); Heterogeneous interface; Peroxymonosulfate; Continuous operation
Categories
Funding
- National Natural Science Foundation of China
- Beijing Natural Science Foundation
- Great Wall Scholars Training Program Project of Beijing Municipality Universities
- Beijing Talent Project
- Science and Technology General Project of Beijing Munic-ipal Education Commission
- [21806008]
- [51878023]
- [8202016]
- [CITTCD20180323]
- [2020A27]
- [KM202110016010]
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FeSx@MoS2-x composites with a tight heterogeneous interface were synthesized for peroxymonosulfate (PMS) activation to degrade atrazine (ATZ). The catalytic performance of FM-0.96 was greatly improved due to the rapid regeneration of Fe2+ resulting from the interfacial interaction. FM-0.96 could completely degrade 10.0 mg/L ATZ within 1.0 min.
FeSx@MoS2-x (FM-x, x implied real Mo/Fe content ratios) in which FeSx derived from MIL-88A deposited on the surface of MoS2 with a tight heterogeneous interface were synthesized for peroxymonosulfate (PMS) activation to degrade atrazine (ATZ). The catalytic performance of FM-0.96 was greatly improved due to the rapid regener-ation of Fe2+ resulting from the interfacial interaction. FM-0.96 could completely degrade 10.0 mg/L ATZ within 1.0 min, and the toxicities for most of its intermediates were greatly reduced. The k value of FM-0.96 was 320 and 40 times higher than that of the MoS2 and FeSx, respectively. The SO4.-, .OH and 1O2 were mainly responsible for ATZ degradation in FM-0.96/PMS system, and the conversion pathway of 1O2 was analyzed. Furthermore, the long-term continuous operation for ATZ degradation was achieved using a fixed membrane reactor. This work provides deep insights into metal sulfide composites derived from metal-organic frameworks for removing pollutants by activating PMS.
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