New insight into the mechanism of peroxymonosulfate activation by Fe3S4: Radical and non-radical oxidation

Li, Jun; Liu, Qi; Gou, Ge; Kang, Shurui; Tan, Xiao; Tan, Bo; Li, Longguo; Li, Naiwen; Lai, Bo

doi:10.1016/j.seppur.2022.120471

Cited by 40 publications

(17 citation statements)

References 48 publications

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“…The characteristic peaks of 2p 3/2 and 2p 1/2 are located at 161.3 and 162.5 eV, respectively, indicating the existence of Fe 3 S 4 in the composite. The two characteristic peaks located at 163.7 and 164.8 eV are ascribed to C–S and CS bonds, respectively. , The C 1s spectrum in Figure d possesses four characteristic peaks, and the characteristic peaks at 284.8, 285.8, 286.7, and 288.6 eV correspond to CC/CC, C–S, C–O, and OCO bonds, respectively. , …”

Section: Resultsmentioning

confidence: 99%

“…The two characteristic peaks located at 163.7 and 164.8 eV are ascribed to C−S and C�S bonds, respectively. 56,57 The C 1s spectrum in Figure 4d possesses four characteristic peaks, and the characteristic peaks To further explore the change of cycle performance of LSBs before and after separator modification, the LSBs were assembled using the positive electrode of S/MWCNTs, negative electrode of lithium metal, and the different types of separators with the modifier layers. Figure 5a shows the CV curves of a lithium−sulfur battery with an Fe 3 S 4 /rGO-PP separator at a scan rate of 0.1 mV s −1 in the first three cycles within a voltage range of 1.7−2.8 V. In the curves, two cathodic peaks at 2.28 and 2.03 V are observed, which are due to the reduction of S 8 to soluble LiPSs (Li 2 S x , 4 ≤ x ≤ 8) and its further conversion to solid discharge product Li 2 S 2 /Li 2 S, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Functional Separator Modified with Reduced Graphene Oxide and Fe₃S₄ for High-Performance Lithium–Sulfur Batteries

Liu

Jin

et al. 2023

ACS Appl. Nano Mater.

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In recent years, due to energy shortage and environmental pollution, lithium–sulfur batteries (LSBs) with low cost, high energy density, and environmentally friendly characteristic have attracted wide attention. However, the shuttle effect caused by lithium polysulfides (LiPSs) greatly reduces the cycle performance and life of LSBs. To solve this problem, we design an Fe3S4/rGO composite by the one-step hydrothermal method, which is used to modify the polypropylene (PP) separator. The Fe3S4/rGO composite has high electronic conductivity and adsorption performance, which provides channels for electron transfer and effectively inhibits the shuttle of LiPSs. The lithium–sulfur battery assembled with an Fe3S4/rGO-PP separator possesses the satisfactory specific capacities. The first discharge capacity reaches 1293 mAh g–1 at 0.2 C, and the discharge capacity maintains at 750 mAh g–1 after 100 cycles. After 300 cycles at 1 C, the discharge capacity is 578 mAh g–1, and the average capacity attenuation rate per cycle is 0.052%. These results indicate that the Fe3S4/rGO-PP separator would have a good application prospect for high-performance LSBs.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Functional Separator Modified with Reduced Graphene Oxide and Fe₃S₄ for High-Performance Lithium–Sulfur Batteries

Liu

Jin

et al. 2023

ACS Appl. Nano Mater.

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“…In the meantime, the hydrolysis of HCO 3 – could lead to the improvement of solution pH to restrain the degradation as discussed in Figure c. H 2 PO 4 – could also scavenge • OH and SO 4 •– to yield weaker reactive species . In addition, transition metals on the catalyst could be coordinated by H 2 PO 4 – as a metal-chelating reagent, decreasing the number of metal active sites .…”

Section: Resultsmentioning

confidence: 99%

“…•− to yield weaker reactive species. 43 In addition, transition metals on the catalyst could be coordinated by H 2 PO 4 − as a metal-chelating reagent, decreasing the number of metal active sites. 44 HA, as a typical natural organic substance, was also introduced in the system to study its influence on the degradation.…”

Section: Impacting Parameters On the Smx Degradationmentioning

confidence: 99%

“…In route I, SMX was attacked by 1 O 2 to form hydroxylated SMX (P1), the methyl group of which was further oxidized to the carboxyl group to yield P2, 58 followed by the production of P3 and P4. 43 In route II, SMX underwent the oxidation of the aniline group to generate nitro-SMX (P5), followed by the reaction of hydroxylation (C13) and isoxazole ring opening to generate P6 and P7, respectively. 61 In route III, the classical S8-N11 bond was broken, resulting in the formation of P8 and P9.…”

Section: •−mentioning

confidence: 99%

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MoS₂ Nanosheets Anchored onto MIL-100(Fe)-Derived FeS₂ as a Peroxymonosulfate Activator for Efficient Sulfamethoxazole Degradation: Insights into the Mechanism

et al. 2022

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By anchoring MoS2 nanosheets onto FeS2 derived from different MIL-100(Fe) precursors, a series of FeS2@MoS2-x samples featuring sulfur vacancies (SVs) were prepared as efficient peroxymonosulfate (PMS) activators to degrade sulfamethoxazole (SMX) from aqueous solution. Benefiting from the strongly reductive sulfur species (S2– and S2 2–), enriched Mo(IV) sites, and abundant SVs, 40 μM SMX was completely removed by the FeS2@MoS2-2/PMS system in 7 min (0.2 g/L FeS2@MoS2-2, 0.25 mM PMS). The k obs obtained by FeS2@MoS2-2 was 0.598 min–1, which was 5.8 and 51.1 times higher than that of FeS2 (0.103 min–1) and MoS2 (0.012 min–1), respectively. Quenching experiments, electron paramagnetic resonance (EPR) analysis, and 18O isotope labeling tests evidenced the involvement of radical (•OH, SO4 •–) and non-radical (1O2, FeIV = O) pathways in the FeS2@MoS2-2/PMS system, and MoS2 anchoring enormously enhanced the contribution of non-radicals to 45.5%. In addition, SVs possessed favorable affinity toward PMS and dissolved oxygen (DO), promoting continuous production of reactive active species. The degradation pathways of SMX were unveiled as well. The satisfactory recyclability, stability, and universality enabled FeS2@MoS2-2 to serve as a promising candidate for PMS activation. This study provides a novel strategy to construct sulfur vacancy-featuring Fe-based sulfide catalysts using MIL-100(Fe) as sacrificial templates for activating PMS to treat refractory organic-polluted water.

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Bidirectionally Regulating Viral and Cellular Ferroptosis with Metastable Iron Sulfide Against Influenza Virus

et al. 2023

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Influenza virus with numerous subtypes and frequent variation limits the development of high-efficacy and broad-spectrum antiviral strategy. Here, a novel multi-antiviral metastable iron sulfides (mFeS) against various influenza A/B subtype viruses is developed. This work finds that mFeS induces high levels of lipid peroxidation and •OH free radicals in the conservative viral envelope, which depends on Fe 2+ . This phenomenon, termed as a viral ferroptosis, results in the loss of viral infectibility and pathogenicity in vitro and in vivo, respectively. Furthermore, the decoction of mFeS (Dc(mFeS)) inhibits cellular ferroptosis-dependent intracellular viral replication by correcting the virus-induced reprogrammed sulfur metabolism, a conserved cellular metabolism. Notably, personal protective equipment (PPE) that is loaded with mFeS provides good antiviral protection. Aerosol administration of mFeS combined with the decoction (mFeS&Dc) has a potential therapeutic effect against H1N1 lethal infection in mice. Collectively, mFeS represents an antiviral alternative with broad-spectrum activity against intracellular and extracellular influenza virus.

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New insight into the mechanism of peroxymonosulfate activation by Fe3S4: Radical and non-radical oxidation

Cited by 40 publications

References 48 publications

Functional Separator Modified with Reduced Graphene Oxide and Fe₃S₄ for High-Performance Lithium–Sulfur Batteries

Functional Separator Modified with Reduced Graphene Oxide and Fe₃S₄ for High-Performance Lithium–Sulfur Batteries

MoS₂ Nanosheets Anchored onto MIL-100(Fe)-Derived FeS₂ as a Peroxymonosulfate Activator for Efficient Sulfamethoxazole Degradation: Insights into the Mechanism

Bidirectionally Regulating Viral and Cellular Ferroptosis with Metastable Iron Sulfide Against Influenza Virus

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New insight into the mechanism of peroxymonosulfate activation by Fe3S4: Radical and non-radical oxidation

Cited by 40 publications

References 48 publications

Functional Separator Modified with Reduced Graphene Oxide and Fe3S4 for High-Performance Lithium–Sulfur Batteries

Functional Separator Modified with Reduced Graphene Oxide and Fe3S4 for High-Performance Lithium–Sulfur Batteries

MoS2 Nanosheets Anchored onto MIL-100(Fe)-Derived FeS2 as a Peroxymonosulfate Activator for Efficient Sulfamethoxazole Degradation: Insights into the Mechanism

Bidirectionally Regulating Viral and Cellular Ferroptosis with Metastable Iron Sulfide Against Influenza Virus

Contact Info

Product

Resources

About

Functional Separator Modified with Reduced Graphene Oxide and Fe₃S₄ for High-Performance Lithium–Sulfur Batteries

Functional Separator Modified with Reduced Graphene Oxide and Fe₃S₄ for High-Performance Lithium–Sulfur Batteries

MoS₂ Nanosheets Anchored onto MIL-100(Fe)-Derived FeS₂ as a Peroxymonosulfate Activator for Efficient Sulfamethoxazole Degradation: Insights into the Mechanism