Journal ArticleDOI
A novel singlet oxygen involved peroxymonosulfate activation mechanism for degradation of ofloxacin and phenol in water
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TLDR
It is reported that singlet oxygen (1O2) rather than ˙OH or SO4˙- was the dominant reactive oxygen species towards the efficient degradation of ofloxacin and phenol, demonstrating a promising application in real wastewater treatment.About:
This article is published in Chemical Communications.The article was published on 2017-06-16. It has received 152 citations till now. The article focuses on the topics: Singlet oxygen.read more
Citations
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Journal ArticleDOI
Persulfate-Based Advanced Oxidation: Critical Assessment of Opportunities and Roadblocks.
TL;DR: This Critical Review comparatively examines the activation mechanisms of peroxymonosulfate and peroxydisulfates and the formation pathways of oxidizing species and the impacts of water parameters and constituents such as pH, background organic matter, halide, phosphate, and carbonate on persulfate-driven chemistry.
Journal ArticleDOI
Identifying the Nonradical Mechanism in the Peroxymonosulfate Activation Process: Singlet Oxygenation Versus Mediated Electron Transfer
TL;DR: This study explored singlet oxygenation and mediated electron transfer as plausible nonradical mechanisms for organic degradation by carbon nanotube (CNT)-activated peroxymonosulfate (PMS) and suggested that CNT-mediated electron transfer from organics to persulfate was primarily responsible for the nonradical degradative route.
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A review of the innovations in metal- and carbon-based catalysts explored for heterogeneous peroxymonosulfate (PMS) activation, with focus on radical vs. non-radical degradation pathways of organic contaminants
TL;DR: In this paper, the authors summarize the rapid development of various heterogeneous catalysts developed for peroxymonosulfate (PMS) activation, destined for the degradation of organic contaminants.
Journal ArticleDOI
Non-radical-dominated catalytic degradation of bisphenol A by ZIF-67 derived nitrogen-doped carbon nanotubes frameworks in the presence of peroxymonosulfate
TL;DR: In this paper, a series of nitrogen-doped carbon nanotubes (NCNTFs) with distinguishable nitrogen content and graphitization degree have been successfully prepared through in situ transformation of ZIF-67 under N2/H2 atmosphere at different pyrolysis temperature.
Journal ArticleDOI
Tuning of Persulfate Activation from a Free Radical to a Nonradical Pathway through the Incorporation of Non-Redox Magnesium Oxide
Ali Jawad,Kun Zhan,Haibin Wang,Ajmal Shahzad,Zehua Zeng,Jia Wang,Xinquan Zhou,Habib Ullah,Zhulei Chen,Zhuqi Chen +9 more
TL;DR: In this paper, the authors reported that magnesium oxides (MgO) in CuOMgO/Fe3O4 not only enhanced the catalytic properties but also switched the free radical peroxymonosulfate (PMS)-activated process into the 1O2 based nonradical process.
References
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Journal ArticleDOI
Combination of Advanced Oxidation Processes and biological treatments for wastewater decontamination—A review
TL;DR: The main conclusions arrived at from the overall assessment of the literature are that more work needs to be done on degradation kinetics and reactor modeling of the combined process, and also dynamics of the initial attack on primary contaminants and intermediate species generation.
Journal ArticleDOI
Production of Sulfate Radical from Peroxymonosulfate Induced by a Magnetically Separable CuFe2O4 Spinel in Water: Efficiency, Stability, and Mechanism
TL;DR: In situ characterization of the oxide surface with ATR-FTIR and Raman during the PMS decomposition suggested that surface Cu(II)- Cu(III)-Cu(II) redox cycle was responsible for the efficient sulfate radical generation from PMS.
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Activation of Peroxymonosulfate by Benzoquinone: A Novel Nonradical Oxidation Process
TL;DR: Findings have important implications for the development of novel nonradical oxidation processes based on PMS, because 1O2 as a moderately reactive electrophile may suffer less interference from background organic matters compared with nonselective •OH and SO4•-.
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Sulfate radicals induced from peroxymonosulfate by magnetic ferrospinel MFe2O4 (M = Co, Cu, Mn, and Zn) as heterogeneous catalysts in the water
TL;DR: In this paper, the mechanism of different catalysts in the catalytic peroxymonosulfate (PMS) solution was illustrated, and the results showed that the incorporation of CoFe 2 O 4 had the highest catalytic performance in PMS oxidation for DBP degradation.
Journal ArticleDOI
Efficient degradation of atrazine by magnetic porous copper ferrite catalyzed peroxymonosulfate oxidation via the formation of hydroxyl and sulfate radicals.
TL;DR: The reactive species for atrazine degradation in PMS/CuFe2O4 system were identified as hydroxyl radical (HO) and sulfate radical (SO4(·-), instead of commonly used alcohol scavenging, which was not a reliable method in metal oxide catalyzed oxidation.
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