CHEMOSPHERE
·
2022
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IF 8.943
Hanlin Wang,Haibo Liu,Xuehua Zou,Fuwei Sun,Luyao Wang,Jingchao Hu,Dong Chen,Meng Liu,Jianfei Shen,Tianhu Chen
In this work, the effect of Co substitution in the Fe 1-x S (CSP) on the activation of H 2 O 2 to degrade tetracycline (TC) is investigated. A series of CSP samples with different Co content are synthesized via a high-temperature sulfidation method and characterized by XRD , XPS , SEM, and electrochemical analysis . The result showed that low Co content (≤1%) promotes the catalytic activity of Fe 1-x S, while excessive Co (1%﹤x ≤ 3%) inhibits its catalytic activity. The investigation of Behnajady-Modirshahla-Ghanbery kinetic model (BMG) showed that the maximum initial degradation rate of TC over 1.0% CSP/H 2 O 2 was 1.6 times than that of in CSP/H 2 O 2 system. The Box-Behnken with Response Surface Methodology was employed to verify optimum condition for TC degradation. The quenching experiments and ESR determined that ·OH, ·O 2 − and 1 O 2 were involved in TC degradation with the treatment of 1.0% CSP/H 2 O 2 system. Electrochemical analysis, ·OH quantification, and metal ion concentrations measure reveal that Co substitution accelerates electron transfer efficiency and Fe 2+ regeneration. Furthermore, nine intermediates are identified and the possible degradation pathway of TC is proposed. The unique effect of Co provides novel insight and efficient strategies for improving the reactivity of iron sulfide.
研究领域:
环境科学
·
催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
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2019
·Vol. 34
·期 18
·3186-3194
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IF 1.982
Meng-Han Wang,Huai-Guo Xue,Sheng-Ping Guo
Iron sulfides have attracted much interests for their potential as anode materials in energy storage devices in view of their low costs, and environmentally benign and high theoretical capacities. Among them, Fe1−xS is relatively rarely investigated. In this work, Fe1−xS@rGO has been synthesized using a facile in situ hydrothermal method. After wrapped by rGO, the morphology of Fe1−xS particles changes from hexagonal flakes to irregular particles with much smaller sizes. As the anode material for lithium ion batteries, Fe1−xS@rGO exhibits excellent lithium storage ability. It can deliver an initial discharge capacity of 1575.5 mA h/g in the potential window of 0.005–3 V, and a reversible capacity of 907.8 mA h/g can be maintained after 200 cycles at 100 mA/g. Its improved electrochemical performance can be attributed to the effect of enhanced contact area and shortened Li+ ion transport distance because of rGO’s contribution.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Ziqian Ma,Zhiqin Sun,Fengyu Qu
Pseudo-capacitive materials with high performance are always combined with carbon-based materials applying for supercapacitors, which can realize satisfactory properties of energy storage while excellent cycle life. Enhancing electrochemical performance of anodes following the method is an effective method to get high energy densities. Herein, Fe 1-x S grown on carbon nanofibers (Fe 1-x S/CFs) through electrospinning and calcination approach, possesses excellent electrochemical properties when it serves as the anode for asymmetric supercapacitors. The specific capacity of which can reach up to 238 mAh g −1 (1 A g −1 ) while remain 95.3 mAh g −1 at 15 A g −1 . The retention rate of the anode can retain 78.5% after 5000 cycles. Considering high performance of anode, NiCo 2 S 4 /NCTs with a high specific capacity of 203 mAh g −1 (1 A g −1 ) was selected as the cathode applying for all-solid-state battery-type asymmetric supercapacitor to get high energy density. Benefitting from excellent properties of both anode and cathode, as-fabricated all-solid-state battery-type asymmetric supercapacitor possesses high energy density of 55.4 Wh kg −1 at the power density of 882 W kg −1 with remarkable cyclic performance (80.6% after 5000 cycles). More important, all-solid-state battery-type asymmetric supercapacitor NiCo 2 S 4 /NCTs//Fe 1-x S/CFs-5 can work with a wide temperature range (−10 to 60 °C), which can display a specific capacity of 40.4 mAh g −1 at 1 A g −1 in −10 °C and 112.3 mAh g −1 in 60 °C. All these results indicate that as-fabricated NiCo 2 S 4 /NCTs//Fe 1-x S/CFs-5 battery-type asymmetric supercapacitor possesses great potential for future applications.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Wenxin Bao,Luyuan Tian,Hao Wang,Aidong Tang,Huaming Yang
Overcoming the intrinsic low activity of most peroxidase mimics under neutral pH is crucial but still extremely challenging for the detection of disease markers in biological samples. Here, we chose nanoclay (i.e., montmorillonite K10, MK10) as a carrier to modulate the structure of Fe1–xS nanozyme components through an interfacial modulation strategy, aiming at breaking the neutral pH limitation of Fe1–xS. MK10 with abundant hydroxyl groups on its surface acts as a carrier to increase the ratio of Fe(II) and S(II−) content in surface Fe1–xS. We verify that Fe(II)-promoted surface hydroxyl radical generation and S(II−)-promoted regeneration of Fe(II) play key roles in endowing peroxidase-like activity to Fe1–xS at neutral pH. As expected, Fe1–xS/MK10 exhibited 11-fold higher Vmax and 52-fold higher catalytic efficiency than bare Fe1–xS. As a proof of concept, the sensor constructed based on Fe1–xS/MK10 achieved colorimetric detection of xanthine under neutral conditions with a linear range of 5–300 μM and a limit of detection of 2.49 μM. Finally, we achieved highly sensitive detection of xanthine in serum using the constructed biosensor. Our contribution is the novel use of a nanoclay-mediated interfacial modulation strategy for boosting the peroxidase-mimicking activity and breaking the pH limitation, which contributes to the in situ detection of disease markers by nanozymes under physiological conditions.
研究领域:
纳米技术
·
生物传感器
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分析化学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2024
·
IF 3.9
Yao Fu,Yang Jin,Fei Cao,Fangfei Guo,Bin He
Sulfur-rich copolymers have gained a great deal of attention as promising cathode materials in Li-S batteries due to their low cost and naturally uniform sulfur dispersion. However, the poor electrical conductivity and shuttle effect cause rapid capacity decay and low sulfur utilization especially under high sulfur loading and low electrolyte/sulfur ratio. Herein, the Fe1-xS/C dispersed and Se-containing sulfur-rich polymer (FSP) was synthesized by one-pot reaction of ferrocene, trithioiynuric acid with SexSy. In such process, the trithioiynuric acid reacts with SexSy to form Se-containing sulfur-rich copolymers. Simultaneously, ferrocene reacts with sulfur to form highly dispersed Fe1-xS/C within sulfur-rich copolymers. The covalent chemical binding of sulfur in the FSP effectively suppress the shuttle effect of polysulfides by chemical binding. Meanwhile, the Se improves the conductivity of FSP, which enhances the reaction kinetics. Moreover, the highly dispersed Fe1-xS/C in the FSP is able to effectively catalyze polysulfide conversion and inhibit the shuttle effect. As a result, the optimized FSP electrode exhibits a high capacity of 1330 mAh g-1 at 0.2 C. Even under high sulfur loading (4.08 mg cm-2) and low E/S ratio (6 μL mg-1), the FSP cathode demonstrates a remarkable capacity of 734.7 mAh g-1 at 0.2 C.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Materials
·
2019
·Vol. 63
·期 4
·505-515
·
IF 5.636
Fan Honghong,Qin Bowen,Wang Zhiwei,Li Huanhuan,Guo Jinzhi,Wu Xinglong,Zhang Jingping
Constructing potential anodes for sodium-ion batteries (SIBs) with a wide temperature property has captured enormous interests in recent years. Fe 1− x S, a zero-band gap material confirmed by density states calculation, is an ideal electrode for fast energy storage on account of its low cost and high theoretical capacity. Herein, Fe 1− x S nanosheet wrapped by nitrogen-doped carbon (Fe 1− x S@NC) is engineered through a post-sulfidation strategy using Fe-based metal-organic framework (Fe-MOF) as the precursor. The obtained Fe 1− x S@NC agaric-like structure can well shorten the charge diffusion pathway, and significantly enhance the ionic/electronic conductivities and the reaction kinetics. As expected, the Fe 1− x S@NC electrode, as a prospective SIB anode, delivers a desirable capacity up to 510.2 mA h g −1 at a high rate of 8000 mA g −1 . Additionally, even operated at low temperatures of 0 and −25°C, high reversible capacities of 387.1 and 223.4 mA h g −1 can still be obtained at 2000 mA g −1 , respectively, indicating its huge potential use at harsh temperatures. More noticeably, the full battery made by the Fe 1− x S@NC anode and Na 3 V 2 (PO 4 ) 2 O 2 F cathode achieves a remarkable rate capacity (186.8 mA h g −1 at 2000 mA g −1 ) and an impressive cycle performance (183.6 mA h g −1 after 100 cycles at 700 mA g −1 ) between 0.3 and 3.8 V. Such excellent electrochemical performance is mainly contributed by its pseudocapacitive dominated behavior, which brings fast electrode kinetics and robust structural stability to the whole electrode.
研究领域:
材料科学
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电化学
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能量存储与转换
·
纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Wenchao Chen,Xin Liu,Jianghai Wu,Qing Wang,Yahui Zhang,Shengxue Yan,Pengqing Hou,Shaohua Luo
Iron sulfide is a potential anode material for sodium-ion batteries because of its abundant natural resources and high theoretical specific capacity. However, they show poor cycling performance due to the serious volume change of iron sulfide materials during the process of charge and discharge. In this work, Fe 1-x S particles are encapsulated in nitrogen-doped 1D carbon fiber material by an electrospinning/high-temperature vulcanization process. The carbon fiber skeleton effectively stabilized the structure of the material; The heteroelement doped carbon improved the electrical conductivity properties and capacitive sodium storage performance. Owing to the unique structure of nitrogen-doped 1D carbon fiber, the material obtains good cycling stability and rate capability. The optimized Fe 1-x S@ nitrogen-doped carbon fibers (Fe 1-x S@NCFs) material was used as the anode of the sodium-ion batteries and maintained a discharge capacity of 382 mAh g -1 after 100 cycles at 0.1 A g -1 and 330 mAh g -1 after 150 cycles at 1 A g -1 .
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Yubo Jia,Zhuosen He,Yucui Hou,He Li,Shuhang Ren,Weize Wu
Direct coal liquefaction (DCL) is an important and effective method to convert coal into chemicals and fuel oil. Pyrite catalysts play an important role in improving the hydrogenation and liquefaction efficiency of coal. There have been many studies on its active component Fe 1-x S in promoting pyrolysis of coal and producing active hydrogen, but studies about the hydrogen migration on Fe 1-x S catalyst and the interaction between hydrogen and Fe 1-x S catalyst were rarely reported. It is significant to study the hydrogen transfer behaviors on Fe 1-x S in DCL and understand the influence of Fe 1-x S on the hydrogen migration process. In this study, the chemical adsorption and desorption of hydrogen on Fe 1-x S were firstly proved experimentally. After pre-sulfidation of Fe 1-x S, the maximum amount of H chemically adsorbed in Fe 1-x S is 8.20 mmol/g at 360 °C and 1.5 h. The dehydrogenation of Fe 1-x S in an anthracene (ANT) system and re-hydrogenation of that in the hydrogen supply systems, such as H 2 and 1,2,3,4-tetrahydronaphthalene (THN), were explored at different experiment conditions, which gave some quantitative results of hydrogen transfer. Particularly, the dehydrogenation of Fe 1-x S in the ANT system was analyzed in thermodynamics. The enthalpy of dehydrogenation of Fe 1-x S in the ANT system is 117.6 kJ mol −1 . The results break the traditional view about Fe 1-x S only as a medium for active hydrogen transfer and provides a new perspective for further understanding the hydrogen transfer process.
研究领域:
能源化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Ziwei Zhao,Haoyun Dou,Xuanpan Xu,Rongjie Zhe,Qingye Zhao,Lingxia Zheng,Xinjun Bao,Ting Zhu,Hong-En Wang
Rational design of effective cathode host materials is an effective way to solve the problems of serious shuttle and slow conversion of polysulfides in lithium-sulfur batteries (LSBs). However, the redox reaction of sulfur differs from conventional “Rocking chair” type batteries and involves a cumbersome phase transition process, so a single-component catalyst cannot consistently and steadily enhance the reaction rate throughout the redox process. In this work, a hybrid composed of magnetopyrite Fe 1−x S catalyst-modified with N/S-doped porous carbon spheres (Fe 1−x S@NSC) is proposed as a novel sulfur host to synergistically promote the adsorption and redox catalysis conversion of polysulfides. In this hybrid, the NSC skeleton provides excellent electrical conductivity and abundant adsorption sites for the physical immobilization of polysulfides; the magnetopyrite Fe 1−x S nanoparticles promote the fast conversion reaction from Li 2 S 2 to Li 2 S, affording strong adsorption and catalytic conversion. The optimal LSB with Fe 1−x S@NSC manifests a high initial capacity of 971 mAh g −1 at 0.2 C (1 C = 1675 mAh g −1 ) and a retention rate of up to 75 % after 100 cycles. This work can provide a new approach for rationalizing the novel transition metal sulfide/porous carbon-based composite hosts with efficient lithium polysulfides (LiPSs) adsorption and catalytic conversion in high-performance lithium-sulfur batteries.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2018
·
IF 13.709
Hongli Wan,Jean Pierre Mwizerwa,Xingguo Qi,Xin Liu,Xiaoxiong Xu,Hong Li,Yong-Sheng Hu,Xiayin Yao
High ionic conductivity electrolyte and intimate interfacial contact are crucial factors to realize high-performance all-solid-state sodium batteries. Na2.9PS3.95Se0.05 electrolyte with reduced particle size of 500 nm is first synthesized by a simple liquid-phase method and exhibits a high ionic conductivity of 1.21 × 10–4 S cm–1, which is comparable with that synthesized with a solid-state reaction. Meanwhile, a general interfacial architecture, that is, Na2.9PS3.95Se0.05 electrolyte uniformly anchored on Fe1–xS nanorods, is designed and successfully prepared by an in situ liquid-phase coating approach, forming core–shell structured Fe1–xS@Na2.9PS3.95Se0.05 nanorods and thus realizing an intimate contact interface. The Fe1–xS@Na2.9PS3.95Se0.05/Na2.9PS3.95Se0.05/Na all-solid-state sodium battery demonstrates high specific capacity and excellent rate capability at room temperature, showing reversible discharge capacities of 899.2, 795.5, 655.1, 437.9, and 300.4 mAh g–1 at current densities of 20, 50, 100, 150, and 200 mA g–1, respectively. The obtained all-solid-state sodium batteries show very high energy and power densities up to 910.6 Wh kg–1 and 201.6 W kg–1 based on the mass of Fe1–xS at current densities of 20 and 200 mA g–1, respectively. Moreover, the reaction mechanism of Fe1–xS is confirmed by means of ex situ X-ray diffraction techniques, showing that partially reversible reaction occurs in the Fe1–xS electrode after the second cycle, which gives the obtained all-solid-state sodium battery an exceptional cycling stability, exhibiting a high capacity of 494.3 mAh g–1 after cycling at 100 mA g–1 for 100 cycles. This contribution provides a strategy for designing high-performance room temperature all-solid-state sodium battery.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Wenbin Gao,Yan Tan,Binhai Wu,Yuzhen Chen,Zhan Hu,Yifan Wang,Yujiao Wen,Zhi Zhou,Nan Zhou
Quinclorac (QNC) and Cr(VI), are common contaminants in surface waters, posing serious hazard to human and ecological health. Nano FeS, an effective catalyst that has excellent redox properties, is susceptible to over-oxidation and agglomeration problems, which impede its practical application. Herein, nano-Fe 1−x S was modified by stable iron oxide (Fe 3 O 4 ) and biochar (BC AA /Fe 1−x S/Fe 3 O 4 ), which presented the core (Fe 1−x S) shell (Fe 3 O 4 )-like structure uniformly dispersed on BC AA surface. The composite overcame the disadvantages of nano-Fe 1−x S and achieved high removal efficiency of 100% and 99.98% for QNC and Cr(VI), respectively. Based on XPS analysis, Fe(II) content was reduced from 53.3% to 34.2% and S(II) content from 13.0% to 6.5%. Fe(II) species in the composite were the main active substance for QNC degradation and Cr(VI) reduction, and S(II) species also indirectly provided electrons to promote Fe 2+ /Fe 3+ cycling. Then, we identified the intermediates of QNC and active radicals • OH or SO 4 •− in the system to suggest possible degradation pathways. We further discovered no mutual interference between QNC and Cr(VI) and proposed the possible mechanism for simultaneous removal that QNC degradation by radical attack and Cr(VI) reduction by electrons.
研究领域:
环境科学
·
催化材料
✓ 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）