CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Siyu He,Jing Chen,Junqiao Zhao,Zhe Wang,Ruoyan Wu,Yongkui Zhang
As antibiotic-resistant bacteria rapidly render antibiotics ineffective, the development of antibacterial nanomaterials that can replace antibiotics is extremely urgent. Here, novel biogenic FeS 2 (bio-FeS 2 ) nanomaterials with broad-spectrum antibacterial activity were synthesized using biogenic FeS as a precursor, which can delay the onset of bacterial resistance. Both S. aureus and E. coli were completely inactivated by bio-FeS 2 under nutritional conditions. Mechanism studies revealed that bio-FeS 2 exhibited superior antibacterial performance than other iron sulfides attributed to the stronger release of iron and sulfur ions and crystal structure. The antibacterial potency of bio-FeS 2 active components follows the order as below: Fe 2+ >S 2 2- >S 2 2- disproportionation to generate S 2- >washed bio-FeS 2 precipitate. These components synergistically killed bacteria by membrane rupture, glutathione consumption, and lipid peroxidation accumulation. Six strains of antibiotic-resistant E. coli were found in the real municipal wastewater. Bio-FeS 2 kept the initial antibacterial activity against the resistant E. coli after ten passages, demonstrating the ability to impede bacterial resistance, whereas tetracycline induced bacterial resistance within four passages. Furthermore, bio-FeS 2 showed biocompatibility with mammalian cells and aquatic plants. This study proposes an efficient antibacterial agent and offers a promising strategy for the treatment of resistant bacteria.
研究领域:
微生物学
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纳米生物学
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环境科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Ge Gou,Shurui Kang,Hailing Zhao,Chao Liu,Naiwen Li,Bo Lai,Jun Li
In this study, carbamazepine (CBZ) degradation was evaluated by peroxymonosulfate (PMS) activation after the simultaneous introduction of FeS 2 and WS 2 . For FeS 2 /WS 2 /PMS system, 99% of CBZ was removed within 40 min under the conditions of 100 mg/L FeS 2 , 150 mg/L WS 2 , 0.2 mM PMS, and initial pH 6.7. The apparent rate constant ( k obs ) of CBZ degradation in the FeS 2 /WS 2 /PMS system (0.108 min −1 ) was about 3.0- and 13.5-folds of that in FeS 2 /PMS system (0.036 min −1 ) and WS 2 /PMS system (0.008 min −1 ). Quenching experiments and electron paramagnetic resonance (EPR) experiments indicated that hydroxyl radical, sulfate radical , superoxide radical, and singlet oxygen participated in the CBZ degradation. The catalytic reaction mechanism was proposed, and W on the surface of WS 2 was the main reactive site to accelerate the regeneration of Fe(II) in the FeS 2 , which played a dominant role in PMS activation. The degradation pathways of CBZ in the FeS 2 /WS 2 /PMS system were put forward, and the ecotoxicity of CBZ and its degradation by-products was evaluated. A distinguishing performance of CBZ degradation in the successive six runs was shown. The work indicated the FeS 2 /WS 2 /PMS system was an efficient advanced oxidation process with promising engineering application due to its simple operation, high efficiency, and stability for the degradation of the organics from water.
研究领域:
环境科学
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水处理技术
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DOI
高影响因子
Canadian Journal of Chemistry
·
2023
·Vol. 101
·期 2
·
IF 1.1
Yunsong Xu,Yanran Gu,Zhongping Yao,Songtao Lu,Xiaohong Wu,Zhaohua Jiang
Solar interfacial water evaporation to obtain pure water has attracted extensive attention in recent years. In this work, based on the excellent optical property of FeS2 and the cross-linking nanostructure of chitosan (CTS), a FeS2@CTS hydrogel composite film for solar interfacial water evaporation was developed by hydrothermal synthesis and the following composite coating technology. The prepared FeS2@CTS presented high solar absorptivity of 95.27% and fast optical response capability. Under the optimized condition, the evaporation rate of pure water reached 3.34 kg m−2 h−1 and the photothermal conversion efficiency was 103.06% under one sun irradiation. In five runs, the evaporation rate of the FeS2@CTS was stable, indicating the excellent cycle stability. Also, in the desalination test, the stable evaporation rate of 1.74 kg m−2 h−1 was obtained in five runs. Due to the simple preparation method, low cost, and outstanding interfacial evaporation property, this FeS2@CTS indicates great potential for the seawater desalination or other photothermal conversion applications.
研究领域:
材料科学
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能源与环境科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Xiyu Wang,Ying Lu,Gunel Imanova,Sridhar Komarneni,Jianfeng Ma
Antibiotics have garnered global attention as a pressing concern due to their wide spread discharge to the environment and resulting significant threats to both human health and the environment. The Sulfate Radical-based Advanced Oxidation Processes (SR-AOPs) technique has already been verified as an effective process for pollutant degradation. Herein, FeS 2 @Co 3 O 4 -C composites, utilizing ZIF-67-derived Co 3 O 4 -C as the substrate material, were fabricated using a single-step solvothermal technique for the degradation of tetracycline (TC) by activated peroxymonosulfate (PMS) in combination with visible light irradiation. In the FeS 2 @Co 3 O 4 -C/PMS/Vis system, the FeS 2 @Co 3 O 4 -C showed better activation performance than the single chemical activation system or photocatalytic system, with 97.2 % TC removed in 20 min. The FeS 2 @Co 3 O 4 -C composite material was thoroughly investigated employing X-ray diffraction (XRD) for analyzing its crystal structure, transmission electron microscopy (TEM) for detailed structural insights, scanning electron microscopy (SEM) for morphological examination, and X-ray photoelectron spectroscopy (XPS) for the elemental valence states. The quenching experiments, along with EPR test, revealed that the primary active oxygen species consisted of 1 O 2 , O 2 ·- , and h + . The results presented here suggest the impressive stability and recyclability of FeS 2 @Co 3 O 4 -C making it a potential candidate as an efficient catalyst for initiating the activation of PMS in degrading persistent organic pollutants present in water.
研究领域:
环境科学
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催化材料科学
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2025
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IF 5.5
Jiewen Zheng,Zhen Zuo,Tao Zhang,Yaqi Wang,Hui Liu,Wanfu Li
This research introduces FAM (FeS2-AIPH@Membrane), a nanoparticle system that synergizes photothermal therapy (PTT), chemodynamic therapy (CDT), and thermodynamic therapy (TDT) for targeted cancer treatment. FAM utilizes FeS2 for photothermal conversion and AIPH for radical generation, encapsulated within a tumor cell membrane to enhance targeting and immune evasion. The synthesis of FeS2 with AIPH was optimized, yielding nanoparticles with excellent stability and photothermal properties. Designed to release drugs in acidic tumor environments, FAM increases cytotoxicity at the target site. Under NIR irradiation in vitro, FAM nanoparticles mediated tumor cell death through concurrent reactive oxygen species production and localized hyperthermia. Cellular uptake studies confirmed enhanced intracellular concentrations due to homologous targeting. In vivo tests on MNNG/HOS tumor-bearing mice showed that FAM significantly reduced tumor volumes without systemic toxicity. These results demonstrate FAM’s potential as a safe, effective cancer theranostics platform, integrating PTT, CDT, and TDT into a single treatment modality, offering a more targeted, efficient, and less invasive cancer treatment alternative.
研究领域:
肿瘤学
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纳米医学
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生物材料学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Yajun Lu,Feng Ma,Jiayao Mao,Haoran Zhang,Jiaxin Wang,Xingtao Liu,Xiaohui Ren,Rongsheng Chen
Nickel iron layered double hydroxide (LDH) with low cost and high catalytic activity in oxygen evolution reaction (OER) has attracted tremendous research interests. In this work, we report a NiS 2 /FeS 2 -decorated Ni-Fe-LDH catalyst (Ni-Fe-LDH/Li 2 S 8 -140) synthesized through a sulfidation treatment of Ni-Fe-LDH. The lithium polysulfide (Li 2 S x , x = 4, 6, 8) was employed as the sulfur source to treat the Ni-Fe-LDH for the first time. The NiS 2 and FeS 2 in the obtained Ni-Fe-LDH/Li 2 S 8 -140 can adjust the valence state of the Ni and Fe, increase the amount of oxygen vacancies (Vo) and improve the OER kinetics. The Ni-Fe-LDH/Li 2 S 8 -140 shows an overpotential of 246 mV at 10 mA cm −2 in alkaline electrolytes with a low Tafel slope of 39.89 mV dec −1 . The Ni-Fe-LDH/Li 2 S 8 -140 can deliver a constant potential without large variation for over 165 h at 20 mA cm −2 . It is interesting that the Ni-Fe-LDH/Li 2 S 8 -140 transformed from aggregated nanosheets to long nanowires after duration test. However, the Ni-Fe-LDH still remains the particle morphology after duration test. This structure evolution possibly induced by the NiS 2 and FeS 2 which may facilitate the charge transfer and benefit the electrolyte penetration can explain the higher stability of Ni-Fe-LDH/Li 2 S 8 -140 than that of Ni-Fe-LDH. Besides, the Ni-Fe-LDH/Li 2 S 8 -140 was also employed as the anode catalyst for a two-electrode electrolyzer which maintains an output voltage of ca. 1.8 V for over 40 h under the continuous current density of 50 mA cm −2 .
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Environmental Science-Water Research & Technology
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2021
·Vol. 7
·期 8
·1430-1442
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IF 4.251
Shengwang Gao,Yang Liu,Jianchao Zhu,Yaqiao Wang,Xue Han,Xunfeng Xia,Xiang Zhao
Novel FeS2/g-C3N4 (FC) composites were successfully constructed using an impregnation–calcination method, and they demonstrated a wonderful visible-light catalytic performance compared with unmodified g-C3N4 and FeS2. The structures, morphologies, and chemical states of the samples were characterized. The photocatalytic performance was assessed based on the removal of tetracycline (TC) under visible light. The removal of TC by 20%-FC reached 83.5% within 180 min, much higher than when using g-C3N4 or FeS2. The improved degradation of TC was a result of the introduction of FeS2, which obviously enhanced the separation of photogenerated carriers at the firmly contacted interface. The effects of the key operating parameters were further explored, including the doping ratio, the concentration of photocatalyst, and the pH value. The photocatalytic theory of charge division was demonstrated using quenching experiments and electron spin resonance (ESR) studies. Finally, the FeS2/g-C3N4 composite exhibited remarkable recyclability and stability. This study creates new prospects for the synthesis of photocatalysts and for the degradation of resistant organic pollutants for environmental remediation.
研究领域:
环境科学
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材料科学
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化学
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产品关联
DOI
高影响因子
Nano Today
·
2024
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IF 13.2
Jiajia Yin,Wenyu Sun,Hongjie Xiong,Jiang Xiao,Zengchao Guo,Xiaohui Liu,Bing Zhang,Hui Jiang,Yossi Weizmann,Xuemei Wang
Catalytic therapy has recently gained considerable attention as a novel tumor microenvironment (TME)-responsive treatment. While conventional nano-catalysts have demonstrated the ability to induce the death of tumor cells through oxidative damage via the generation of reactive oxygen species (ROS), their therapeutic efficacy is impeded by several factors, including limited tissue penetration depth and suboptimal catalytic efficiency. Herein, the FeS 2 -tetrathiomolybdate (FeS 2 -TTM) nanosheet was synthesized via in-situ self-assembled in the specific redox TME using metal precursors of divalent iron and tetrathiomolybdate, and these metal precursors could easily enter tumor cells through vascular penetration to avoid the blood-brain barrier. This nanosheet has been proved to possess peroxidase (POD)-like catalytic activity, which overcomes the limitations of traditional nanoparticals by the bimetallic electron transfer effect in the TME to amplify the catalytic treatment effect. Importantly, it retains the chelating copper characteristics of TTM, and inhibits tumor angiogenesis by depriving the necessary copper in cells and angiogenesis, resulting in vascular embolization to cause tumor blood vessels to collapse. Additionally, it can also act as a nanoprobe that supports both real-time fluorescence imaging monitoring and T1/T2 dual-modality magnetic resonance imaging (MRI). As a promising nanomaterial, this new type of in-situ self-assembled nanosheet provides more varieties for the construction of an integrative platform of tumor diagnosis and treatment.
研究领域:
生物医学工程
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肿瘤学
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材料科学
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产品关联
DOI
高影响因子
ACS Applied Energy Materials
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2021
·
IF 6.024
Ranran Bu,Ying Deng,Yonglong Wang,Yu Zhao,Qiqi Shi,Qi Zhang,Zhenyu Xiao,Yanyan Li,Wei Sun,Lei Wang
Over the past decades, great achievements of supercapacitor positive electrode materials have been developed, but the exploration of negative electrode materials is obviously lagging and mainly focuses on low-capacity electrochemical double-layer capacitor-based carbon materials (≤300 F g–1, commonly), which limits the overall capacitance of supercapacitor devices for further application. In this work, using the gifted MIL-88A@GO as a precursor, we fabricate a FeS2/Fe2O3 heterostructure-coupled S-functionalized 3D rGO network (FeS2/Fe2O3@S-rGO) by a diffusion-controlled etching and vulcanizing process. The formation of heterogeneous interfaces and the strongly coupled interaction between the FeS2/Fe2O3 heterostructure and 3D S-rGO can provide high surface area for more electrochemical active sites, a rich pathway for the rapid transmission of the electron and electrolyte, and effectively alleviate the volume variation in the charging and discharging process. Therefore, the as-obtained FeS2/Fe2O3@S-rGO presents an outstanding capacity of 219.4 mA h g–1 (790 F g–1) at a current density of 2 A g–1, which is higher than that of most reported Fe-based negative materials. Then, a positive electrode of hierarchical 2D/3D Ni3S2/Co3S4 (NCS) is prepared and further fabricated with a FeS2/Fe2O3@S-rGO electrode to obtain a hybrid supercapacitor device (NCS//FeS2/Fe2O3@S-rGO), which delivers an outstanding overall capacitance value of 114.2 mA h g–1 (274 F g–1) at 1 A g–1 and provides a remarkable energy density of 85.63 Wh kg–1 corresponding to a power density of 0.75 kW kg–1.
研究领域:
材料科学
·
能源存储与转换
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2020
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IF 3.232
Kang Luo,Haicheng Chen,Qing Zhou,Zhihong Yan,Zhengquan Su,Kang Li
Iron disulfide (FeS 2 ) quantum dots have potential applications in various fields such as photocatalysis , lithium-ion batteries and bioimaging. At present, there is no report on the fluorescent characteristics of FeS 2 quantum dots (FeS 2 QDs). In this work, a synthesis of multiple-color emission FeS 2 QDs by changing the temperature, time and raw ratio has been reported. The blue, green, yellow and red emission FeS 2 QDs can be obtained, respectively. They were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscope (TEM). On this basis, a novel molecular imprinting ratiometric fluorescence sensor (MIR sensor) had been constructed, in which the blue-emission FeS 2 QDs (b-FeS 2 QDs) was used as a fluorescent responsive signal material and the yellow-emission FeS 2 QDs (y-FeS 2 QDs) was served as a reference signal material. And this MIR sensor was applied for highly selective and sensitive detection of ACO in traditional Chinese medicine (TCM). Under the optimum conditions, the MIR sensor exhibited an excellent linear relationship between the fluorescence intensity ratio (I 443 /I 590 ) and the concentration of ACO in the range of 0.05–5.0 μM with a detection limit of 24 nM. Furthermore, the established method was successfully utilized to the detection of ACO in TCM Fuzi Lizhong Pills with satisfactory results. It provided a reference for the application of the FeS 2 QDs with multiple color emission and the detection of the hazardous alkaloids.
研究领域:
材料科学
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分析化学
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生物医学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2020
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IF 8.758
Qian Liu,Shao-Jian Zhang,Cheng-Cheng Xiang,Chen-Xu Luo,Peng-Fang Zhang,Chen-Guang Shi,Yao Zhou,Jun-Tao Li,Ling Huang,Shi-Gang Sun
Cubic N,S codoped carbon coating MnS–FeS2 composites (MnS–FeS2@NSC) with a hollow structure were prepared and used as anode materials for sodium-ion batteries. MnS–FeS2@NSC exhibits excellent cycle performance and high rate capability and delivered a reversible capacity of 501.0 mAh g–1 after 800 cycles at a current density of 0.1 A g–1 with a capacity retention of 81%. More importantly, the MnS–FeS2@NSC anode holds long-term cycle stability; the capacity can remain 134.0 mAh g–1 after 14 500 cycles at 4 A g–1. Kinetic analysis demonstrated that Na+ storage follows a pseudocapacitive dominating process, which is ascribed to the origin of the outstanding rate performance of the MnS–FeS2@NSC material. The enhancement of electrochemical performance is attributed to the hollow structure and the N,S codoped carbon coating structure, which can reduce the diffusion distance for sodium ions and electrons, alleviate volume expansion during sodium-ion insertion/extraction, and retain the structural integrity effectively. Furthermore, a two-step sodiation processes with FeS2 sodiation prior to MnS was demonstrated by X-ray diffraction (XRD), and the electrochemical impedance spectroscopy (EIS) spectra might indicate that the accumulation of the metallic elements in the preconversion reaction can accelerate the transfer of electrons and ions in the further conversion process.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Results in Engineering
·
2024
·
IF 6
Yizhe Huang,Yuwen Chen,Ke Zhu,Pengfei Li,Xu Wu,Kai Yan
Due to rapid industrial development, numerous dye pollutants and heavy metals, such as arsenic (As), have contaminated water sources, causing complex pollution that threatens both the ecological environment and human health. Therefore, there is an urgent need to design an effective strategy for treating complex dye wastewater. Herein, we have constructed high-purity pyrite FeS 2 nanoplates as bifunctional catalysts for the simultaneous removal of dyes and arsenite (As(III)). We have developed a visible light-assisted peroxymonosulfate (PMS) activation method to remove typical organic dye pollutants (e.g., rhodamine B, malachite green, methyl orange, methylene blue) and toxic As(III). The FeS 2 /Light/PMS system can remove 100 % of all dye pollutants and more than 85 % of As(III) within 18 min simultaneously with high cyclic stability, which is believed to be effective in complex pollution control. It is confirmed that the multivalent Fe ions and S 2 2− are the main active centers, and the free radical and non-free radical pathways synergistically enhance the oxidation of dye pollutants, in which SO 4 ·- and 1 O 2 are the main reactive oxygen species. This work presents a facile strategy for developing a metal sulfide-based Fenton-like system for treating complex dye wastewater.
研究领域:
环境科学
·
化学工程
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材料科学
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）