Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 27
·16541-16552
·
IF 10.733
Xuefang Xie,Yang Hu,Guozhao Fang,Xinxin Cao,Bo Yin,Yaping Wang,Shuquan Liang,Guozhong Cao,Anqiang Pan
As a promising conversion-type anode material, iron sulfide has been widely studied. However, due to its huge volume expansion during repeated lithiation/delithiation, iron sulfide tends to pulverize and form aggregates upon cycling, which greatly hinders its application in high performance lithium ion batteries as a durable anode material. Herein, a strategy for synthesizing and stabilizing iron sulfide nanosheets with a robust titanium oxide nanofiber interior support is proposed. The hierarchical nanostructured composite anode material was successfully synthesized by the electrospinning technique and subsequent sulfurization. The size of the iron sulfide nanosheets can be easily tuned by adjusting the composition of the reacting agents and/or the sulfurization temperature. Electrochemical results reveal that the composite delivers a reversible capacity of 591 mA h g−1 at a current density of 0.1 A g−1 after 100 cycles and exhibits excellent long-term cycling stability at 0.5 A g−1 and 1 A g−1 as well. Furthermore, when being paired with LiFePO4, the as-synthesized composite also delivers promising full-cell performance, showing its potential in serving as a competitive candidate anode material in lithium-ion batteries for power applications. Moreover, this method also opens up an avenue for modifying and improving other conversion-type anode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Jin Zhang,Hao Yu,Weijian Xu,Hongyu Shi,Xiaohong Hu,Jiang Xu,Liping Lou
Sulfidized nanoscale zerovalent iron (S-nZVI) was a promising material for degrading halogenated contaminants, but the easy aggregation limits its application for in-situ groundwater remediation . Hence, S-nZVI was decorated onto modified biochar (mBC) to obtain better dispersity and reactivity with florfenicol (FF), a widely used antibiotic. Uniform dispersion of S-nZVI particles were achieved on the mBC with plentiful oxygen-containing functional groups and negative surface charge. Thus, the removal rate of FF by [email protected] was 2.5 and 3.1 times higher than that by S-nZVI and [email protected] , respectively. Adsorption and dechlorination of FF showed synergistic effect under appropriate mBC addition (e.g., C/Fe mass ratio = 1:3, 1:1), probably due to the enrichment of FF facilitates its reduction. In contrast, the contact between FF and S-nZVI could be hindered under more mBC addition, significantly decrease the reduction rate of FF and the reduction capacity of per unit Fe 0 . In addition, sulfur dose altered the surface species of surface Fe and S, and removal rates of FF correlated well with surface reductive species, i.e., FeS ( r = 0.90, p < 0.05) and Fe 0 ( r = 0.98, p < 0.01). These mechanistic insights indicate the importance of rational design for biochar supported S-nZVI, which can lead to more efficient FF degradation.
研究领域:
环境科学
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材料科学
·
化学工程
·
水处理
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Bao-Hua Hou,Ying-Ying Wang,Jin-Zhi Guo,Yu Zhang,Qiu-Li Ning,Yang Yang,Wen-Hao Li,Jing-Ping Zhang,Xin-Long Wang,Xing-Long Wu
A novel core–shell Fe3O4@FeS composed of Fe3O4 core and FeS shell with the morphology of regular octahedra has been prepared via a facile and scalable strategy via employing commercial Fe3O4 as the precursor. When used as anode material for sodium-ion batteries (SIBs), the prepared Fe3O4@FeS combines the merits of FeS and Fe3O4 with high Na-storage capacity and superior cycling stability, respectively. The optimized Fe3O4@FeS electrode shows ultralong cycle life and outstanding rate capability. For instance, it remains a capacity retention of 90.8% with a reversible capacity of 169 mAh g–1 after 750 cycles at 0.2 A g–1 and 151 mAh g–1 at a high current density of 2 A g–1, which is about 7.5 times in comparison to the Na-storage capacity of commercial Fe3O4. More importantly, the prepared Fe3O4@FeS also exhibits excellent full-cell performance. The assembled Fe3O4@FeS//Na3V2(PO4)2O2F sodium-ion full battery gives a reversible capacity of 157 mAh g–1 after 50 cycles at 0.5 A g–1 with a capacity retention of 92.3% and the Coulombic efficiency of around 100%, demonstrating its applicability for sodium-ion full batteries as a promising anode. Furthermore, it is also disclosed that such superior electrochemical properties can be attributed to the pseudocapacitive behavior of FeS shell as demonstrated by the kinetics studies as well as the core–shell structure. In view of the large-scale availability of commercial precursor and ease of preparation, this study provide a scalable strategy to develop advanced anode materials for SIBs.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Caiwen Wu,Shan Huang,Xing Cao,Zexiong Huang,Yanjuan Zhang,Zuqiang Huang,Huayu Hu,Tao Gan
Fe-based photo-Fenton process is widely used to remove antibiotic in wastewater, however, the synthesis of efficient and stable catalysts to solve the problems of Fe 3+ /Fe 2+ ions cycling and iron sludge formation of FeS-based catalysts is challenging. Herein, a strategy combining mechanical activation and pyrolysis was proposed to construct a novel FeS/amorphous carbon nitride (2D/2D FeS/ACN) composite with a two-dimensional (2D) stacked structure, where the FeS and ACN connected by Fe x −N bonds. The removal rates of oxytetracycline, tetracycline, and chlorotetracycline over 2D/2D FeS/ACN both surpassed 96.0 % within 30 min in the photo-Fenton system, and the photo-Fenton system exhibited a much higher total organic carbon (TOC) removal than the Fenton and photo systems, giving an improvement of rate constant to 3.0 and 6.5 times, respectively. The excellent performance attributed to the fact that the photogenerated electrons were trapped by the sulfur vacancy and directed to the Fe active site for Fe 3+ /Fe 2+ cycling via a highly-efficient charge transfer channel (Fe x −N), resulting in efficiently circulating Fe 3+ to Fe 2+ . Moreover, due to the involvement of photogenerated electrons in the reduction of Fe 3+ to decrease the consumption of S (S 2− and S n 2− ), 2D/2D FeS/ACN showed superior stability after five cycles, inhibiting the formation of iron sludge. This work provides a new route for the acceleration of Fe 3+ /Fe 2+ cycling in Fe-based photo-Fenton process for the efficient treatment of tetracycline-based wastewater.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Jinxiang Song,Youfeng Lin,Xihong Zu,Zhu Jiang,Wenli Zhang,Xueqing Qiu
Transition metal sulfides (TMSs) serve as promising anode materials for sodium-ion batteries (SIBs) because they offer high theoretical capacity, suitable intercalation voltage and abundant resources. However, the large sodium ion radius induces significant volume expansion and pulverization, resulting in slow kinetics and short cycle life. Additionally, polysulfides formed during cycling trigger “under-voltage failure” and capacity degradation, limiting their practical application. To overcome these challenges, we employ the complexation of Fe 2+ ions with hydroxyl groups in ammoniated lignin to generate amorphous spherical intermediates. Then, we synthesize FeS/C anode materials through pyrolysis-induced carbothermal reduction, where lignin-derived carbon acts as a reducing agent to convert Fe 2 O 3 (formed from FeSO 4 pyrolysis) into FeS. The FeS/C nanospheres are encapsulated by carbon shells and integrated into a 3D macroporous carbon matrix, effectively mitigating FeS volume expansion and polysulfide shuttling. The optimized FeS/C-31 anode demonstrates excellent performance, delivering a high specific capacity of 562.6 mAh g −1 at 0.1 A g −1 and maintaining 382.2 mAh g −1 at 20 A g −1 . It also exhibits outstanding cycling stability, with a capacity retention of 92.3 % after 1000 cycles at 10 A g −1 .This study presents a sustainable and scalable method for producing FeS/C anodes from industrial lignin waste, offering a practical solution for next-generation SIBs.
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产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Mengxia Wang,Bing Han,Dongye Zhao,Sen Hou,Weizhao Yin,Yanyan Gong
Faced with worldwide mercury (Hg) contamination in groundwater, efficient in situ remediation technologies are urgently needed. Carboxymethyl cellulose (CMC) stabilized iron sulfide (CMC-FeS) nanoparticles have been found effective for immobilizing mercury in water and soil. Yet, the potential use of the nanoparticles for creating an in situ reactive zone ( ISRZ ) in porous geo-media has not been explored. This study assessed the transport and deliverability of CMC-FeS in sand media towards creating an ISRZ . The nanoparticles were deliverable through the saturated sand bed and the particle breakthrough/deposition profiles depended on the injection pore velocity, initial CMC-FeS concentration, and ionic strength. The transport data were well interpreted using an advection-dispersion transport model combined with the classical filtration theory. The resulting ISRZ effectively removed mercury from contaminated groundwater under typical subsurface conditions. While the operating conditions are yet to be optimized, the Hg breakthrough time can be affected by groundwater velocity, influent mercury concentration, dissolved organic matter, and co-existing metals/metalloids. The one-dimensional advection-dispersion equation well simulated the Hg breakthrough data. CMC-FeS-laden ISRZ effectively converted the more easily available Hg species to stable species. These findings reveal the potential of creating an ISRZ using CMC-FeS for in situ remediation of Hg contaminated soil and groundwater.
研究领域:
环境科学
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土壤修复
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水文学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Jinhong Fan,Lin Gu,Deli Wu,Zhigang Liu
Among the numerous iron-based materials for persulfate (PS) activation, mackinawite (FeS) particles have gained considerable interest as a ubiquitous natural mineral due to their high reactivity. However, the iron and sulfur co-mediated reaction mechanism of PS activation by FeS remains ambiguous. In this study, FeS was applied as a catalyst to activate PS for p -chloroaniline (PCA) degradation and mineralization over a wide initial pH range (3.0–11.0). The reaction was found to follow pseudo-first-order kinetics, with rate constants ranging from 0.0044 to 0.0144 min −1 . The reaction mechanism was elucidated by electron spin resonance (ESR) and quenching studies. A heterogeneous activation mechanism, in which surface Fe(II) species activated PS to produce OH ads and SO 4 − ads , controlled by surface reaction and diffusion was proposed, whereas OH free and SO 4 − free diffusing from the FeS surface were mainly responsible for PCA degradation. The sulfur-mediated cycling of iron species was investigated by comparing PS activation by zero-valent iron (ZVI) and FeS, exogenous Fe(III) addition and X-ray photoelectron spectroscopy (XPS). The results suggested that Fe(II) and S(-II) experienced independent oxidations and that S(-II) species could regenerate Fe(II) from Fe(III) at the FeS surface. Therefore, the S(-II)-promoted Fe(II)/Fe(III) cycle resulted in less PS decomposition but a higher PCA mineralization efficiency. The findings of this study elucidated the novel surface activation mechanism of PS by FeS and provided useful information for utilizing FeS to remediate contaminated water.
研究领域:
环境科学
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化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Lijuan Wang,Mengxia Wang,Zhanjun Li,Yanyan Gong
Mercury contamination poses a serious threat to the ecological system and human health. Yet, removal of mercury at parts per billion (ppb) level in surface water is difficult to achieve. This study developed a Mg 2 Al layered double hydroxide supported iron sulfide composite (FeS@Mg 2 Al-LDH) and investigated its removal effectiveness and mechanisms of mercury from surface water. FeS was successfully soldered onto Mg 2 Al-LDH via surface complexation and surface adsorption. The composite (FeS:Mg 2 Al-LDH mass ratio of 1:1) at 20 mg/L effectively removal 89.4% of 110 µg/L mercury at pH 7.0 within 72 h. A pseudo-second-order kinetic model well simulated the sorption kinetic data and a Sigmoidal Langmuir isotherm model perfectly fitted the sorption isotherm data with a maximum monolayer sorption capacity of 116.96 mg/g. X-ray powder diffraction (XRD), Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS) analyses suggested that mercury was removed via chemical precipitation, ion exchange, and surface complexation. The supporting material Mg 2 Al-LDH greatly enhanced the antioxygenic and pH-resistant properties of FeS, and the composite offered high selectivity for mercury. FeS@Mg 2 Al-LDH and immobilized mercury remained stable over 6 months. This study demonstrated the potential and viability of FeS@Mg 2 Al-LDH for efficient removal of aqueous mercury.
研究领域:
环境科学
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水处理
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 15
·1-11
·
IF 2.8
Zhang Lichen,Lin Jie,Wang Xintong,Zhu Xinxin,Ding Yihong,Jin Huile,Zeng Tianbiao
Tin-based sulfides, such as SnS 2 , have garnered attention as lithium-ion anode materials due to their layer structure and high conductivity capacity. However, during the lithium alloying/dealloying cycles, SnS 2 material exhibits a rapid capacity decay due to the volume expansion, which hinders the application of SnS 2 . In this study, a heterostructure composite material anchored on exfoliated graphite, designated as nano SnS 2 S 3 /Sn 3 S 4 /FeS/Fe 7 S 8 anchored on 15.0 wt% exfoliated graphite (FSS/G-15%), was synthesized by heating a mixture of inexpensive reducing agent Fe powder and SnS 2 powder, followed by ball milling with 15.0 wt% commercial graphite. Experimental results demonstrated that FSS/G-15% had exhibited optimal overall Li + storage performance, achieving approximately 1306.7, 1199.2, 1033.1, 882.3, 707.3, 507, 366.3, 255.6, and 203.5 mA hg −1 at current densities of 0.1, 0.2, 0.5, 1, 2, 4, 6, 8, and 10 Ag −1 , respectively, surpassing the majority of SnS 2 -based anode materials. The simplicity and efficiency of the synthetic method may have potential implications in various fields in the future.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 50
·505610
·
IF 3.874
Liyun Qin,Yan Lu,Qinliang Li,Zhendong Wang,Jianyu Wang,Binbing Tang,Wenda Zhou,Cailei Yuan,Qisheng Wang,Li Wang
The combination of two-dimensional (2D) materials with non-2D materials (quantum dots, nanowires and bulk materials), i.e. mixed-dimensional van der Waals (md-vdW) heterostructures endow 2D materials with remarkable electronics properties. However, it remains a big challenge to synthesize md-vdW heterostructures because of the difference of crystal symmetry between 2D and non-2D materials. Meanwhile, it is difficult to initiate the nucleation due to the lack of chemical active sites on chemical inert surfaces of 2D materials. Herein, we design a general chemical vapor deposition method for synthesizing a broad class of md-vdW heterostructures with well-aligned hexagonal symmetry including MoS2/FeS, MoS2/CoS, MoS2/MnS, MoS2/ZnS, Mo(SxSe1–x)2/ZnSxSe1–x, Mo(SxSe1–x)2/CdSxSe1–x. Combining with DFT calculation, we find that the hexagonal symmetry and the centered clusters of MoS2 and Mo(SxSe1–x)2 nanoflakes are two crucial factors to launch the hexagonally oriented growth and nucleation of non-2D materials on 2D materials. Our discovery opens an opportunity for the versatile hetero-integration of 2D materials and allows systematic investigation of physical properties in a wide variety of md-vdW heterostructures.
研究领域:
材料科学
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纳米技术
·
化学
·
物理学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Fan Yang,Rui Shu,Bin Li,Wenyu Dai,Wanxi Chen,Jiamin Sun,Ding Bai,Weizhong Yang,Yi Deng
Persistent activation of NLRP3 inflammasomes in infectious diabetic wounds lead to uncontrolled inflammation. Hydrogen sulfide (H 2 S) gas therapy shows promise in inhibiting inflammasomes. However, on-demand delivery of H 2 S is challenging, as its biological characteristics are Janus-faced. Herein, we present the anti-inflammasome bio-heterojunction (AI-bioHJ), comprising FeS, Cu 2 O, and glucose oxidase (GOx), capable of H 2 S gas evolution and in situ self-transformation to accelerate diabetic wound healing. In this system, AI-bioHJ release H 2 S to inhibit NLRP3 inflammasomes and recycle excess H 2 S through a reaction between Cu 2 O and H 2 S, maintaining a low H 2 S concentration while upgrading type I FeS/Cu 2 O to Z-scheme FeS/CuS bioHJ, and markedly enhancing phototherapy. Additionally, GOx depletes local glucose to generate H 2 O 2 , promoting Fenton-like reactions and rapid pathogenic elimination. In vivo and in vitro assessments confirm AI-bioHJ effectively eliminate pathogen, inhibit inflammasomes and facilitate diabetic wound healing. Transcriptome analysis indicates that the FoxO–autophagy axis may mediate the anti-inflammasome effects. Altogether, our work provides enlightenments into programmed H 2 S-releasing bioHJ for remedying diabetic wounds.
研究领域:
生物材料
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伤口愈合
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炎症
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气体疗法
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纳米技术
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Li Liang,Xiaoqin Li,Zhang Lin,Chen Tian,Yiqing Guo
In this study, the microstructure of sulfidated nanoscale zero-valent iron (S-nZVI), and the reaction mechanism with cadmium (Cd) were investigated. Combining with spherical aberration-corrected scanning transmission electron microscope (Cs-STEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Fourier transformed infrared (FTIR), it was found that the one-step synthesized S-nZVI with Na 2 S as the sulfidation reagent is irregular in shape and consisted of heterogeneous mixtures of Fe 0 , amorphous FeS, and Fe 3 O 4 . The dominant reaction mechanism between S-nZVI and Cd is displacement of Fe in FeS and the formation of CdS. The effects of Cd initial concentration, Mg 2+ , NO 3 − , and humic acid (HA) on the reaction kinetics were also studied. The removal capacity of Cd by S-nZVI can reach up to 495 mg/g, which is significantly higher than other S-nZVI and adsorbents. The reactions follow pseudo-second-order adsorption model, with chemisorption as the rate limiting step during the displacement reaction. Low concentration of Mg 2+ (<30 mg/L), NO 3 − (<60 mg/L), and HA (<10 mg/L) slightly decreases the removal of Cd due to the competition. Moreover, S-nZVI shows high efficiency and stability towards the removal of both free Cd ions and EDTA-chelated Cd during the concentration investigated. Overall, the study shows that sulfur plays a critical role in the particle microstructure and transformation of Cd in the environment.
研究领域:
环境科学
·
材料科学
·
化学
✓ 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）