SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Zhengyuan Zhou,Mudassir Habib,Zhiqiang Xu,Guilu Zeng,Rumin Yang,Qian Sui,Shuguang Lyu
In this research, greigite (Fe 3 S 4 ) was innovatively applied for the enhancement of PDS/Fe(II) system. From XRD and SEM analyses, Fe 3 S 4 was successfully synthesized and appeared uniform sphere-like particles with a petal-like structure. Trichloroethylene (TCE), as the target, was significantly degraded from 28.5 % to 92.8 % in PDS/Fe(II)/Fe 3 S 4 system. The enhanced mechanisms, differences, and superiority of Fe 3 S 4 against the other three iron sulfides were elucidated as follows: (1) on account of the abundant reduction sites on its surface, Fe 3 S 4 could not only directly release Fe(II) and accelerate Fe(II) regeneration by sulfur substances, but also participate in the process of O 2 − • generation, and (2) the reaction mainly took place on Fe 3 S 4 surface, in which the surface-bound reactive species (RSs) were of great importance for TCE degradation. Through EPR, quantification, and scavenging tests of RSs, HO•, SO 4 − •, and O 2 − • were all the dominant RSs responsible for TCE removal. Besides, these enhanced systems had high tolerance on complex water conditions and could remediate various contaminants in actual groundwater. Three TCE degradation pathways were deduced in four iron sulfide-enhanced systems and the toxicities of intermediates were evaluated, recommending that Fe 3 S 4 -enhanced system was of the least toxicity and most favorable for application in practice.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Qingsong Liu,Jinlong Gao,Chuntian Cao,Geping Yin,Zaixing Jiang,Mingyuan Ge,Xianghui Xiao,Wah-Keat Lee,Jiajun Wang
Sodium ion batteries (SIBs) are considered a potential energy storage technology due to their low cost and the abundance of sodium resources. Numerous strategies have been made to address the remaining challenges such as low electronic conductivity, huge volume change, and sluggish sodium ions kinetics. In spite of impressive advances, a comprehensive understanding of the microstructure-stability correlation remains elusive. Here, the three-dimensional (3D) Fe 3 S 4 flower-like hierarchical materials constructed from two-dimensional (2D) nanosheet building units were synthesized via a facile and cost-effective method. Instead of materials synthesis and performance evaluation, more attentions have been paid on the underlying coupling mechanism between microstructure design, surface chemistry and 3D electronic/ionic transport pathways. It found that the thin and stable SEI layer generated by ether-based electrolytes contributes to the stable surface chemistry and fast interfacial Na + ion transport, while 3D hierarchical structure enables short diffusion distance, volume change accomodation as well as stabilizing SEI layer. Taking advantage of the inherent high electronic conductivity in Fe 3 S 4 , we have demonstrated the paramount importance of the synergistic strategy to improve the stability of SIBs through X-ray nanotomography. This work explicitly illuminate the electrochemical stability mechanisms of 3D hierarchitectures and resolves new strategies to rational design SIBs anodes.
研究领域:
材料科学
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电化学
·
纳米材料
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能源存储
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固体物理
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界面化学
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DOI
高影响因子
Small
·
2025
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IF 12.1
Yangzi Shangguan,Ranhao Wang,Huan Tang,Shimao Deng,Qiushi Hu,Jiaxin Liang,Huiling Zhou,Xihan Chen,Hong Chen
Photocatalytic antibiotic degradation is an energy-efficient and environmentally friendly approach with the potential for large-scale application but is severely constrained by the lack of efficient and stable catalysts to produce reactive oxygen species (ROS). This research introduces a charge-ordered 3D Fe 3 S 4 -PUF composite integrated into a custom-built photocatalytic tandem continuous-flow cylinder reactor (TCCR) for antibiotic degradation. The system consistently achieves 100% tetracycline (TC) degradation efficiency with Fe 3 S 4 -PUF during 130 h of continuous operation, benefiting from the charge-ordered 3D Fe 3 S 4 -PUF framework and the TCCR design. Mechanism investigations reveal that the abundant Lewis basic ≡SH site and light-induced sustainable Fe 2+ /Fe 3+ redox cycling within Fe 3 S 4 facilitates the production of H 2 O 2 and ROS. Density functional theory (DFT) calculations indicate that Fe 2+ acts as an active site for capturing and activating O 2 , leading to either one-electron (O 2 →O 2 •− →H 2 O 2 →•OH) or two-electron transfer (O 2 →H 2 O 2 ) pathways. Meanwhile, photogenerated electron and the oxygen atoms in H 2 O 2 provide electrons to Fe 3+ , facilitating the reduction of Fe 3+ to Fe 2+ , thus elucidating the Fe 2+ /Fe 3+ redox cycling mechanism. Moreover, the 3D PUF structure enhances the mass transfer and pollutant-ROS interactions. The continuous-flow photocatalytic reaction validate the efficient antibiotic degradation of Fe 3 S 4 -PUF composite, suggesting its potential for implementation in large-scale antibiotic wastewater treatment systems.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Jingbiao Ge,Huihui Xue,Yang Yang,Sujuan Zhang,Xiuzhen Zheng,Shifu Chen
Studies on highly efficient heterojunction photocatalysts are regarded as an important task for H 2 production by water splitting. In this work, a novel ternary Fe 3 S 4 /ZnCdS/ZnS (FS/ZCS/ZnS) heterostructures were successfully prepared by a simple grinding method. With ZCS/ZnS nanoclusters loading on the surface of Fe 3 S 4 microflowers, photocatalytic H 2 production of ZCS/ZnS was largely improved in lactic acid (LA) solution. The H 2 evolution rate of FS/ZCS/ZnS is high up to 4.36 mmol g −1 h −1 under visible light irradiation and 8.13 mmol g −1 h −1 under full spectrum irradiation. Prolonged experiments and cycle tests showed that FS/ZCS/ZnS is stable and reusable. The formation of ternary heterostructures facilitates the separation and transfer of photogenerated charge carriers (PCCs, including photogenerated electrons and holes), leading to the activity enhancement of photocatalytic H 2 production. The strategy for the heterojunction construction can provide more perspective for the design of high-efficiency and recyclable photocatalysts for H 2 evolution.
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2019
·
IF 3.218
Zewei Hao,Pengkun Wei,Hongzhi Kang,Yang Yang,Jing Li,Xue Chen,Donggang Guo,Lu Liu
Due to outstanding performance in energy conversion and storage, transition metal sulfides as well as hollow microstructure have become possible alternatives to noble metal electrocatalyst and become a hot issue. Therefore, we successfully synthesized Fe 3 S 4 @NiS hollow nanospheres (HSs) by a one-step solvothermal process, applied in oxygen evolution reactions (OER) to provide sustainable energy. Owing to particular microstructure and proper elemental composition ratio, Fe 3 S 4 @NiS HSs (partially been oxidized) show an outstanding OER performance with the overpotential and Tafel slope of only 338 mV at 10 mA cm −2 and 73 mV dec −1 in 0.1 M KOH solution, respectively.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yutao Shan,Chen Chen,Ying Liang,Yuliang Chen,Yuliang Wu,Yijiang Liu,Rui Meng,Wenmin Wang,Weiwei Huang,Fei Yang,Xuesong Yi,Jun Cheng
To investigate the photocatalytic synergistic effect and efficiency of composites of iron sulfide (Fe 3 S 4 ) and titanium dioxide (TiO 2 ) after modification with cetyltrimethylammonium bromide (CTAB), this study employed commercial TiO 2 nanoparticles, ferric chloride hexahydrate, and thiourea as precursors to synthesize the catalyst. CTAB was incorporated into the precursors for modification and optimization. A simple one-step solvothermal method was utilized to prepare TiO 2 @Fe 3 S 4 photocatalysts with different CTAB loadings. After modifying the TiO 2 @Fe 3 S 4 photocatalyst with CTAB, its photocatalytic degradation performance for Rhodamine B and sulfamethoxazole was significantly enhanced, the reaction rate constant for its degradation of RhB, calculated using a pseudo-first-order reaction kinetic model, is 0.2187(min −1 ). By guiding the well-distributed construction of semiconductor heterojunctions in Fe 3 S 4 through CTAB in the reaction atmosphere, the spatial uniformity of the heterojunction structure was strengthened. This improvement enhanced the separation capability of photogenerated electrons and holes without compromising their redox properties, thereby exhibiting excellent catalytic efficiency in the degradation of organic pollutants.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Arabian Journal of Chemistry
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2022
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IF 6.212
Junjian An,Shanshan Wang,Mengxuan Huang,Jian Zhang,Peng Wang
Advanced oxidation processes (AOPs) have gained extensive attentions in organic decontamination in past decades. Iron-contained compound is an interesting material due to its adsorptive and catalytic performance, which has been applied widely in AOPs. Thus, graphene oxide (GO)-Fe 3 S 4 composite was synthesized by a solvothermal process and assessed as an effective adsorptive and catalytic dual functional material in this work. The composite displayed prominent adsorptive and heterogeneous Fenton-like catalytic performance, which was affected by preparation condition and the reactive parameters in catalytic system. Under optimized reactive conditions, the GO-Fe 3 S 4 composite yielded rapid degradation of vanillic acid, which the corresponding apparent rate constant was 1.81 × 10 −1 min −1 . Catalytic mechanism analysis revealed that the main oxygen species was hydroxyl radicals bounded on the surface of the composite. And the generation of •O 2 – was contributed to the conversion of H 2 O 2 to •OH. The analysis of degradation intermediates of vanillic acid and p -hydroxybenzoic showed that these compounds could be mineralized to small molecules. The prominent enhanced heterogeneous Fenton-like catalytic performance of GO-Fe 3 S 4 was due to a larger specific surface area, plenty of reductive active sites in the composite and a high mass transfer efficiency of oxidizing radicals in the reactive system.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jieyi Wang,Hairong Shen,Mengke Li,Chenquan Ni,Hui Zhong,Zhiguo He
In this work, sulfidation modification of copper tailings (CT) yields a cost-effective catalyst (S-CT) for peroxymonosulfate (PMS) activation. In situ-grown sulfur vacancy (S V )-rich Fe 3 S 4 nanoparticles on S-CT surface plays a pivotal role, elevating the degradation kinetic constant ( k obs ) of salicylhydroxamic acid (SHA) in the S-CT/PMS system to 40-fold that of the CT/PMS system (0.1641 min −1 vs. 0.0041 min −1 ). The synergistic radical/non-radical pathways involving surface-bound •OH (•OH surface ), 1 O 2 and Fe IV O preferentially attack the hydroxamic acid group (-CONHOH) of SHA, achieving its complete degradation. Notably, S V narrows the p-d band gap of Fe 3 S 4 , significantly strengthening the electron transfer between Fe and S sites while enhancing the adsorption-activation of PMS. Therefore, S-CT exhibits more remarkable catalytic performance compared to other solid waste-derived catalysts previously developed by our group. In summary, this study provides an innovative and practical strategy for developing environmental remediation materials from copper tailings, showcasing its promising potential in organic wastewater treatment.
研究领域:
环境科学
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材料化学
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废物资源化
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高级氧化技术
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2020
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IF 5.977
Wei Liu,Jinrong Tian,Chengliang Mao,Zhenfeng Wang,Jia Liu,Randy A. Dahlgren,Lizhi Zhang,Xuedong Wang
Herein, sulfur vacancies in magnetic greigite (SVs-Fe 3 S 4 ) nanosheets were synthesized by a one-step solvothermal method by adjusting the ethylene glycol : water ratio. Electron paramagnetic resonance spectroscopy (EPR) and X-ray photoelectron spectroscopy (XPS) revealed that SV-rich Fe 3 S 4 and SV-poor Fe 3 S 4 were acquired using 100% ethylene glycol and 100% water as solvent, respectively. A peroxidase-like activity assay demonstrated that maximum reaction rates for H 2 O 2 -mediated oxidation of 3,3′,5,5′-tetramethyl-benzidine (TMB) catalyzed by the SV-rich Fe 3 S 4 was 2.3 times higher than SV-poor Fe 3 S 4 . Density functional theory (DFT) calculations and reactive oxygen species (ROS) detection confirmed that the enhanced peroxidase-like activity by SV-rich Fe 3 S 4 was attributed to efficient adsorption of H 2 O 2 and subsequent decomposition to hydroxyl radicals (•OH) on the SVs sites of Fe 3 S 4 . The SV-rich Fe 3 S 4 nanozyme was employed to develop a simple, highly sensitive and selective assay for glucose detection with a linear range of 0.5–150 μM and a detection limit of 0.1 μM (S/N = 3). A smartphone application (App) was designed and applied to efficiently detect serum glucose with the integrated analytical system based on the SV-rich Fe 3 S 4 . These new findings highlight the important role of surface defects in nanozymes on generating peroxidase-like activity for glucose detection in point-of-care diagnosis.
研究领域:
生物化学
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医学诊断
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材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 6
·120382
·
IF 7.2
Xiaoxue Pan,Yanan Wen,Le Tao,Jinli Qiu,Yuchen Jin,Xianqiu Zhang,Xuesheng Zhang
While the co-exposure toxicity of neonicotinoids (NENIs) and their synergists has attracted attention, it is of high demand to establish effective methods for achieving their co-removal under real environmental conditions. In this study, a magnetically recoverable Fe 3 S 4 catalyst was synthesized via a facile hydrothermal route and employed to activate H 2 O 2 for the simultaneous removal of thiamethoxam (THM) and piperonyl butoxide (PBO). The system demonstrated high co-removal efficiency of THM and PBO under optimized conditions. Although co-existence of PBO significantly suppressed THM removal in comparison to single system, complete removal of THM (in 5 h) and PBO (in 1 h) was still achieved. Notably, co-existence of humic acid and inorganic anions, and change in water matrix displayed negligible influence on the reaction process, with removal efficiencies remaining above 80 %. Mechanism investigations through quenching tests and electron paramagnetic resonance (EPR) verified that hydroxyl radicals (•OH) served as the primary reactive species, contributing almost 100 % to THM degradation. In contrast, PBO removal occurred via a dual pathway involving •OH oxidation and surface adsorption. X-ray photoelectron spectroscopy (XPS) analysis of Fe 3 S 4 before and after reaction further revealed the pivotal role of surface sulfur species in accelerating Fe 3+ /Fe 2+ cycle and facilitating sustained H 2 O 2 activation. •OH oxidized THM and PBO via four routes: denitration, cleavage C-C or C-N bond, ring opening, and hydroxylation. These findings provide remarkable insights for the remediation of water containing mixed pesticide pollutants.
研究领域:
环境科学
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水处理
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高级氧化技术
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污染物降解
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催化
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Shanshan Wang,Yi Liu,Xiaolong Deng,Jiafeng Cao,Yufeng Han,Jinzhao Huang,Yibing Li
In this study, unique Co 3 S 4 /Fe 3 S 4 heterostructures (denoted as CoFe-HM-T) were synthesized from CoFe layered double hydroxides (LDHs) by a two-step hydrothermal process (hydrazine monohydrate and thiourea treatment). The effect of Co 3 S 4 /Fe 3 S 4 heterostructures on the electrocatalytic water splitting was investigated in alkaline solution. The CoFe-HM-T electrode exhibited excellent oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) catalytic activity with overpotentials of 320 mV and 200 mV at the current density of 100 mA cm −2 , respectively. CoFe-HM-T also possessed the smallest Tafel slope among the prepared samples, which was estimated to be 38.1 mV dec −1 and 144.9 mV dec −1 for OER and HER, respectively. Serving as bifunctional catalysts, the CoFe-HM-T electrode reached the state-of-art current density of 10 mA cm −2 at a cell voltage of 1.70 V with excellent stability. The enhanced electrocatalytic activity was ascribed to the interconnected structure facilitating the mass transport, the heterojunction accelerating the charge transfer, and the synergistic effect between them. This study offered a new strategy for in situ synthesizing the heterojunction electrocatalysts with unique interface by readily tuning the metal components in transition-metal LDHs.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Jiawei Deng,Sai Teng,Dan Li,Jiren Yuan,Feigao Xu
In this study, novel magnetic Fe 3 S 4 /Ti 3 C 2 MXene composites were successfully synthesized via a hydrothermal method and employed as a highly efficient photo-Fenton catalyst for the degradation of tetracycline hydrochloride (TCH). The optimized composite (Fe 1 M 0.5 ), with a Fe 3 S 4 : Ti 3 C 2 MXene mass ratio of 1:0.5, exhibited exceptional catalytic performance under visible light, achieving a TCH removal efficiency of 93.9 % within 90 min (pH = 4.2, 10 mM H 2 O 2 , 0.3 g L −1 catalyst). The introduction of Ti 3 C 2 MXene significantly mitigated Fe 3 S 4 agglomeration, enhanced charge carrier separation, and broadened the operational pH range (2.2–7.2). Mechanistic studies revealed that the TCH degradation process was dominated by the synergistic effects of •OH, •O 2 − , h + , and e − dominated, which were facilitated by the Fe 3+ /Fe 2+ and Ti 4+ /Ti 3+ redox cycles as well as the formation of Schottky heterojunction. The composite demonstrated robust stability (>80 % TCH degradation efficiency after five cycles) and versatility in degrading diverse pollutants (e.g., RhB, MB). Magnetic characterization confirmed its easy recovery (10 emu g −1 saturation magnetization), and interference tests indicated a high tolerance to common inorganic anions (e.g., Cl − , SO 4 2− , NO 3 − ). This work highlights the potential of Fe 3 S 4 /Ti 3 C 2 MXene composites as sustainable, multifunctional catalysts for environmental remediation, offering insights into the design of MXene-based hybrid systems for advanced oxidation processes.
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高影响因子
危险品化学品经营许可证（带存储）