Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1322, P. 140340 - 140340
Published: Oct. 10, 2024
Language: Английский
Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1322, P. 140340 - 140340
Published: Oct. 10, 2024
Language: Английский
Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(25), P. 9394 - 9404
Published: June 13, 2023
Electron paramagnetic resonance (EPR) spectroscopy using sterically hindered amine is extensively applied to detect singlet oxygen (1O2) possibly generated in advanced oxidation processes. However, EPR-detectable 1O2 signals were observed not only the 1O2-dominated hydrogen peroxide (H2O2)/hypochlorite (NaClO) reaction but surprisingly also 1O2-absent Fe(II)/H2O2, UV/H2O2, and ferrate [Fe(VI)] process with even stronger intensities. By taking advantage of characteristic between 9,10-diphenyl-anthracene near-infrared phosphorescent emission 1O2, was excluded Fe(VI) process. The false detection ascribed direct piperidyl radical by reactive species [e.g., •OH Fe(VI)/Fe(V)/Fe(IV)] via transfer, followed molecular addition (forming a piperidylperoxyl radical) back generate nitroxide radical, as evidenced successful identification intermediate at 100 K theoretical calculations. Moreover, compared highly oxidative (e.g., high-valence Fe), much lower reactivity profound nonradiative relaxation H2O resulted it too selective inefficient organic contaminant destruction. This study demonstrated that EPR-based could be remarkably misled common thereby jeopardize understandings on 1O2.
Language: Английский
Citations
83Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 529, P. 216439 - 216439
Published: Jan. 16, 2025
Language: Английский
Citations
4ACS ES&T Engineering, Journal Year: 2023, Volume and Issue: 4(1), P. 19 - 46
Published: Aug. 14, 2023
Persulfate based advanced oxidation processes (PS-AOPs) have been regarded as a mainstream degradation technology of organic compounds due to their high efficiency in wastewater treatment. In particular, peroxymonosulfate (PMS) has unique structure and chemical properties, which can be efficiently activated by Co-based catalysts produce active species with potential. These usually determine the subsequent an efficient process, while intrinsic reaction mechanism behind this complex process remains unclear therefore impedes continual development scientific community. Recently, density functional theory (DFT) calculations emerged powerful means identify electronic properties distinguish energy changes PMS activation system. With assistance quantum calculation, increasing investigations conducted focusing on explaining phenomenon that occurred experiments. However, these mainly contributed part sometimes even differ from each other, lacking comprehensive summary DFT calculation results. review, we introduce main uses catalytic PMS, provide recent application examples heterogeneous different structures, then discuss detail. Finally, research results method field are summarized, future focus challenges put forward, is conducive guiding practical design further PS-AOPs creating value products.
Language: Английский
Citations
30Rare Metals, Journal Year: 2024, Volume and Issue: 43(7), P. 3146 - 3160
Published: April 3, 2024
Language: Английский
Citations
13Water Research, Journal Year: 2024, Volume and Issue: 264, P. 122255 - 122255
Published: Aug. 16, 2024
Language: Английский
Citations
9ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(10), P. 11386 - 11400
Published: May 9, 2024
The Mn–Co dual-metal oxide is recognized as an effective activator for peroxymonosulfate (PMS), but its activation mechanism remains controversial. In this study, a Co/Mn–C–N (CMCN) nanocatalyst was synthesized using simple pyrolysis method, and catalytic activity along with the PMS comprehensively explored. findings indicated that synergistic effect of Mn Co within bimetallic composition significantly enhanced efficiency CMCN compared to those individual metal oxides (Mn–C–N Co–C–N). Bisphenol A underwent successful degradation 3 min in neutral environment, kinetic rate 1.59 min–1 total organic carbon removal 63.8%. Moreover, nanoparticles demonstrated remarkable stability reusability, maintaining their efficacy over four cycles. Employing series experiments analytical characterizations, novel proposed, involving both radical nonradical pathways. This involves oxidation pollutants through direct electron transfer process from metastable intermediate complexes. Notably, CMCN/PMS system exhibited robust resistance interference factors. research provides insights into development composites recalcitrant water pollutants.
Language: Английский
Citations
8Nanomaterials, Journal Year: 2024, Volume and Issue: 14(5), P. 473 - 473
Published: March 5, 2024
The release of organic contaminants has grown to be a major environmental concern and threat the ecology water bodies. Persulfate-based Advanced Oxidation Technology (PAOT) is effective at eliminating hazardous pollutants an extensive spectrum applications. Iron-based metal-organic frameworks (Fe-MOFs) their derivatives have exhibited great advantages in activating persulfate for wastewater treatment. In this article, we provide comprehensive review recent research progress on significant potential Fe-MOFs removing antibiotics, dyes, phenols, other from aqueous environments. Firstly, multiple approaches preparing Fe-MOFs, including MIL ZIF series were introduced. Subsequently, removal performance such as antibiotics sulfonamides tetracyclines (TC), dyes rhodamine B (RhB) acid orange 7 (AO7), phenols phenol bisphenol A (BPA) by various was compared. Finally, different degradation mechanisms, encompassing free radical pathways non-free elucidated. This explores synthesis methods application bodies, providing insights further refining preparation Fe-MOFs.
Language: Английский
Citations
7Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116427 - 116427
Published: March 1, 2025
Language: Английский
Citations
0Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162578 - 162578
Published: April 1, 2025
Language: Английский
Citations
0Chemosphere, Journal Year: 2023, Volume and Issue: 338, P. 139358 - 139358
Published: June 26, 2023
Language: Английский
Citations
6