JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Bingqian Wang,Junyi Ma,Shujun Xu,Wenping Fan,Bin Liu,Guangming Li,Guangda Li
In this paper, a hollow tubular Co 3 S 4 /NiS/FeS heterogeneous composite was prepared by an ordinary hydrothermal procedure. The inner Co 3 S 4 can act as the carrier of the outer NiS/FeS, and the outer NiS/FeS can effectively prevent the collapse of the inner Co 3 S 4 hollow structure, ensuring the durability of the structure and performance in the cyclic charge-discharge test. The strong electronic interaction between Co 3 S 4 and NiS/FeS significantly improves the catalytic activity. It shows a small 230 mV overpotential at 10 mA cm −2 , which is superior to commercial RuO 2 . The Zn-air battery assembled with Co 3 S 4 /NiS/FeS catalyst showed outstanding stability over 2700 cycles with a narrow voltage gap of 0.67 V at 3 mA cm −2 . Flexible battery also combined based on this catalyst can generally be discharged/charged at each bending angle and the gap remained almost continuous. Furthermore, Co 3 S 4 /NiS/FeS also displays hydrogen evolution reactions activity, displaying a lower overpotential of 233 mV at 10 mA cm −2 . In the overall water splitting, Co 3 S 4 /NiS/FeS is used as both anode and cathode electrocatalyst , which can reach 10 mA cm −2 at 1.52 V, and the performance remains steady for 50 h. In conclusion, Co 3 S 4 /NiS/FeS is a potential tri-functional catalyst for ZABs and overall water splitting.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Qi Zhu,Fei Feng,Zhong-er Long,Yunhong Huang,Haiyan Ni,Xueqin Fu,Longhai Dai,Long Zou
Microbial reduction is an economical and environmentally benign route to deal with high-toxic Cr 6+ widely present in aquatic environments, but faces major challenges such as cytotoxicity and insufficient organic electron donors. Herein, we propose a route for the removal of Cr 6+ from water using a ternary FeS/reduced graphene oxide/ Shewanella oneidensis MR-1 (FeS/rGO/MR-1) hybrid with external electricity supply at an electrode potential of −0.36 V. The biohybrid with excellent redox activity is in-situ biosynthesized by virtue of the versatile metabolic pathway and powerful extracellular electron transfer ability of MR-1 cells without the need of organic carbon sources. The biohybrid is directly used to remove Cr 6+ under the condition of continuous electricity input, the removal rate is negatively correlated with the applied electrode potential. Compared with binary FeS/MR-1 and rGO/MR-1 counterpart, the FeS/rGO/MR-1 hybrid achieves an improved ability to remove Cr 6+ at an initial concentration of 20 mg L −1 in three consecutive batches due to the synergistic effect. The FeS is the main active component for rapid chemical reduction of Cr 6+ because of its highly reducible Fe 2+ and S 2- , and rGO acts as the bridge to accelerate electron transfer from the applied electrode to MR-1 cells. Then, the MR-1 cells use the obtained electrons for FeS regeneration, which in turn reduces Cr 6+ again, resulting in the precipitation of less toxic Cr 3+ [Cr(OH) 3 and Cr 2 O 3 ] in the biohybrid. This study provides a feasible route for removal of toxic Cr 6+ from water lacking organic electron donor by in-situ synthesis of biohybrid with external electricity supply.
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Qun Wang,Han Zeng,Youheng Liang,Ye Cao,Yang Xiao,Jun Ma
The heterogeneous catalyst Mackinawite (FeS) was applied to activate periodate (IO 4 − ) to degrade endocrine disruptors bisphenol AF (BPAF). This study investigated the influence of FeS dosage, periodate dosage, BPAF concentration, initial pH value and inorganic ions on BPAF degradation by FeS/IO 4 − system. The results showed that the BPAF was effectively degraded by FeS/IO 4 − system. The acidic pH exhibited higher efficiency in BPAF degradation compared with alkaline and neutral conditions. Furthermore, the BPAF degradation was dramatically promoted in the presence of Cl − and SO 4 2− , whereas CO 3 2− inhibited BPAF degradation. The radical scavenging tests and EPR indicated that singlet oxygen ( 1 O 2 ), superoxide radicals (O 2 − ) and SO 4 − were committed to the degradation of BPAF, among which O 2 − , 1 O 2 were predominant radicals. The separate experiments showed that Fe(Ⅱ) participated in the activation of periodate. Furthermore, the effects of sulfur species (including the S 2− , SO 3 2− ) on BPAF degradation by FeS/IO 4 − system were studied. The radical quenching tests suggested that S 2− and SO 3 2− were responsible for producing SO 4 − . The findings of this study elucidated an approach for the removal of micro-pollutants in the water environment through heterogeneous activation of periodate by FeS.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xucheng Dong,Xiaofan Zhai,Jing Yang,Yingying Pei,Fang Guan,Yandao Chen,Jizhou Duan,Baorong Hou
Biosynthetic metal sulfides showed great application prospects in the environmental treatment against high-valence metal pollutants. However, the efficiency of biosynthesis, agglomeration during the reaction process, and the formation of the passivation layer during the reduction process were always the important factors restricting its development. This study explored the composition of the culture medium to promote the growth of highly corrosive sulfate-reducing bacteria (SRB) and its metabolism to produce FeS nanoparticles (NPs). The results showed that reducing the carbon source (CS) and adding electron carriers in the culture medium effectively promoted the production of small, dispersed, and loose FeS NPs in cells. At pH = 7, 24 °C and 10 min reaction time, 0.1 g/L FeS NPs produced by SRB under the conditions of 10 % CS with 10 ppm cytochrome c medium could achieve 100 % removal efficiency of 1 mM hexavalent chromium (Cr(VI)). Under this condition, FeS NPs could be produced by intracellular metabolism in SRB cells, and environmental factors such as pH, metal cations, and Cl − had little effect on the removal of Cr(VI) by this FeS NPs. The surface proteins of FeS NPs significantly enhanced their antioxidant properties. After 7 days of natural environment exposure, the Cr(VI) removal efficiency of FeS NPs was only reduced by 16 % compared with the initial sample. This work provided an in-depth understanding of Cr(VI) removal by SRB biosynthesis of FeS and contributes to the widespread application of FeS in the future.
研究领域:
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Hongli Liu,Chunxiao Lv,Shuai Chen,Xiaoyang Song,Bohan Liu,Jin Sun,Huawei Zhang,Dongjiang Yang,Xilin She,Xiaoliang Zhao
The development of anode materials with a high capacity, excellent rate capability, and acceptable stability for sodium-ion batteries (SIBs) is still an urgent issue. Here, we fabricated FeS nanoparticle (NP)/three-dimensional (3D) carbon nanofiber aerogels (CNA) composites utilizing Fe-alginate aerogels as the renewable precursor. In the FeS/CNA sample, well-distributed FeS NPs were embedded on a 3D-CNA network with high electron conductivity and a large specific surface area. Impressively, the FeS/CNA sample was evaluated as an anode electrode material for SIBs, and exhibited an excellent specific capacity (473 mA h g −1 at 0.1 A g −1 ) and outstanding rate capacity (291 mA h g −1 at 5 A g −1 ). In addition, 97.4% of the capacity, 385 mA h g −1 , was retained over 400 cycles at 2 A g −1 , indicating the prominent cycling stability of the FeS/CNA sample. The results were ascribed to the unique structure of the FeS particles embedded on interconnected CNAs, which could boost sodium ion diffusion and facilitate electrolyte access.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2016
·
IF 3.42
Xiaoya Liu,Enbo Shangguan,Jing Li,Sashuang Ning,Litan Guo,Quanmin Li
In this paper, FeS nanoparticles anchored on reduced graphene oxide (rGO) nanosheets are synthesized via a facile direct-precipitation method. For the first time, a novel electrochemical sensor is developed based on FeS/rGO nanosheets modified glassy carbon electrode (GCE). It has been proved that the resultant FeS/rGO/GCE sensor is very suitable for the individual and simultaneous measurement of dopamine (DA) and acetaminophen (AC) and delivers excellent anti-interference ability to ascorbic acid (AA) and uric acid (UA). Under optimum conditions with differential pulse voltammetry method, a broad linear response versus the concentrations of DA and AC has been observed in the ranges of 2.0 to 250.0 μM and 5.0 to 300.0 μM, respectively. The detection limits for DA and AC are 0.098 μM and 0.18 μM, respectively. Furthermore, the as-obtained sensor has been successfully utilized in real samples and satisfactory results have been achieved. Consequently, by virtue of its outstanding electrocatalytic activity, excellent sensitivity, and long time stability, the as-obtained FeS/rGO modified electrode can be considered as a new promising DA and AC sensor.
研究领域:
分析化学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 33
·2204437
·
IF 19.924
Liguo Jin,Xiangmei Liu,Yufeng Zheng,Zhaoyang Li,Yu Zhang,Shengli Zhu,Hui Jiang,Zhenduo Cui,Paul K. Chu,Shuilin Wu
Staphylococcus aureus ( S. aureus )-induced osteomyelitis is fatal to patients, even leading to death without timely debridement processing, which is difficult to be treated by antibiotics or phototherapy due to deep infections. Herein, a microwave (MW) assisted bacteria-killing strategy for treating S. aureus -induced osteomyelitis by using MW-responsive molybdenum disulfide (MoS 2 )/ferrous sulfide (FeS) heterojunction with anti-inflammatory herb of rhein (Rhe) is reported. Under medical MW irradiation, MoS 2 /FeS/Rhe effectively eradicates S. aureus -infected rat tibial osteomyelitis. The robust therapeutic effects of MoS 2 /FeS/Rhe are ascribed to the anti-inflammatory effect of Rhe, the enhanced MW thermal and dynamic effects of MoS 2 /FeS. MoS 2 /FeS is composed of S-Mo-S-Fe-S stacked layers sandwiched in between by weak Van Der Waals interactions, which means that ions or molecules can be retained in the space between the layers. Under MW irradiation, dipoles or ions are aligned in an oscillating electric field, which cause dipolar polarization and ionic conduction, leading to molecular friction and dielectric loss to generate MW heat. In addition, the dipole orientation polarization caused by the interfacial polarization of MoS 2 /FeS is the main factor for microwave catalysis. This kind of MW responsive nanocomposite comprising inorganics and herbs may solve the challenge of how to effectively treat deep tissue infections.
研究领域:
材料科学
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纳米技术
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生物医学工程
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微生物学
·
药理学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Jiapeng Wang,Hua-Bin Yuan,Yongxuan Xiang,Lili Xing,Xinpeng Chen,Yifeng Wang,Jiazhuang Chen,Guoqiang Chen,Tieling Xing
Oxygen evolution reaction (OER), as a half-reaction of water decomposition, has a high theoretical overpotential. Therefore, the development of electrocatalysts with high OER performance is favorable for electrolytic hydrogen production. In situ growth of nanomaterials on conductive substrates is an effective strategy for the preparation of electrocatalysts. In this work, we grew Ni/Co bimetallic metal-organic framework (MOF) on carbon cloth substrates and successfully constructed a robust NiCo 2 S 4 /FeS@CC electrocatalyst through a MOF derivatization strategy. This electrocatalyst can be used for efficient and robust OER performance. MOF-derived NiCo 2 S 4 /FeS has the advantage of a porous heterostructure and multicomponent with many active sites and faster charge transfer rate, while sulfur doping greatly improves the OER performance. The current density of this self-supported heterogeneous material in alkaline freshwater reaches up to 10 mA cm −2 with an overpotential of only 238 mV. NiCo 2 S 4 /FeS@CC exhibited good OER performance in alkaline brine with an overpotential of only 241 mV at 10 mA cm −2 . We speculate that this is due to the generation of a negatively charged SO 4 2− anionic layer on the catalyst surface during the electrooxidation process, which effectively avoids Cl − corrosion. And both conditions demonstrate excellent long time stability. Additionally, we succeeded in further reducing the onset potential and energy consumption by adding ethanol or methanol to the electrolyte. This work provides an effective method to improve the OER performance of MOF-derived transition metal electrocatalysts for hydrogen production from electrolytic water.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Siyue Zhang,Hui Cheng,Baoli Wang,Fan Shi,Lijun Yan,Lina Zeng,Lin Li,Shuhai He,Wei Sun
Petal-shaped FeS@MoS 2 -C nanocomposite was synthesized using carbon fiber as the basic carrier by hydrothermal method. The uniformly dispersed nanocomposite, hemoglobin (Hb) and Nafion mixture were drip-coated on the newly prepared carbon ionic liquid electrode (CILE) to build a modified electrode named as Nafion/Hb/FeS@MoS 2 -C/CILE. The morphology and valence state of FeS@MoS 2 -C nanocomposite was investigated by SEM, TEM, XPS etc. and the biological structure of Hb was not changed based on UV-VIS and FT-IR spectroscopic analysis. Electrochemistry of Nafion/Hb/FeS@MoS 2 -C/CILE was recorded by cyclic voltammetry with voltammetric behaviors investigated. Also, the modified electrode has excellent catalytic performance for nitrite, hydrogen peroxide, bromate with the detection range as 0.10~5.00 mmol L -1 , 0.10~14.00 mmol L -1 , 0.05~25.00 mmol L -1 , respectively. The pickle juice sample was analyzed by this method satisfactory, further proving the practical application.
研究领域:
生物化学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Qi Fang,Yanling Tan,Ran Yan,De Zhang,Mi Li,Xiaoyan Wu,Yilong Hua,Wenjing Xue,Rongzhong Wang
Nanoscale zerovalent iron (Fe 0 )-based materials have been demonstrated to be a effective method for the U(VI) removal. However, limited research has been conducted on the long-term immobilization efficiency and mechanism of Fe 0 -based materials for U(VI), which are essential for achieving safe handling and disposal of U(VI) on a large scale. In this study, the prepared carboxymethyl cellulose (CMC) and sulfurization dual stabilized Fe 0 (CMC-Fe 0 /FeS) exhibited excellent long-term immobilization performances for U(VI) under both anoxic and oxic conditions , with the immobilization efficiencies were respectively reached over 98.0 % and 94.8 % after 180 days of aging. Most importantly, different from the immobilization mechanisms of the fresh CMC-Fe 0 /FeS for U(VI) (the adsorption effect of –COOH and –OH groups, coordination effect with sulfur species, as well as reduction effect of Fe 0 ), the re-mobilized U(VI) were finally re-immobilized by the formed FeOOH and Fe 3 O 4 on the aged CMC-Fe 0 /FeS. Under anoxic conditions , more Fe 3 O 4 was produced, which may be the main reason for the long-term immobilization U(VI). Under oxic conditions, the production of Fe 3 O 4 and FeOOH were relatively high, which both played significant roles in re-immobilizing U(VI) through surface complexation, reduction and incorporation effects.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Chenxu Sun,Shengfan Fang,Kunyuan Zhao,Huipei Zhang,Luyao Qi,Yanmin Qin,Haifeng Bao
FeS, with its high theoretical capacity and natural abundance, holds significant promise as an anode material for lithium-ion batteries (LIBs). However, its practical application is constrained by poor electrical conductivity and substantial volume expansion during cycling, which impair charge–discharge efficiency and cycling stability. To overcome these challenges, we developed a nitrogen and sulfur co-doped carbon-encapsulated FeS composite with a hollow double-layer structure (HDL-FeS@NSC). Utilizing sulfur spheres as a sacrificial template, our inside-out synthesis strategy produces a unique material design. The HDL-FeS@NSC composite exhibits significant improvements in electrochemical performance compared to pure FeS. These enhancements are due to its increased specific surface area, which facilitates lithium-ion diffusion; a shortened Li + diffusion pathway; structural stability that mitigates volume expansion; and an optimized carbon layer that boosts conductivity. The HDL-FeS@NSC-70 anode demonstrates a specific capacity of 879.6 mAh/g after 600 cycles at 1.0 A/g and retains 558.0 mAh/g at 5.0 A/g. Additionally, the lithium storage mechanism has been thoroughly investigated using in-situ techniques. These results suggest that the HDL-FeS@NSC composite anode has the potential to significantly enhance lithium-ion battery performance, offering a promising solution for next-generation energy storage systems.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qian Zhao,Jianlong Gou,Mengxinyue Zhang,Hong Chen,Guiyu Zhu,Xiaoxiao Zhang,Yanan Xue,Yanping Liu,Jianzhi Wang
Developing sulfur-containing one-dimensional (1D) nanocatalysts with high active surface area and stability remains a significant challenge for achieving high-performance oxygen evolution reaction (OER) catalysts. In this study, a novel 1D FeS-Ni 3 S 2 nanorod array covered with interwoven nanosheets was synthesized on nickel foam (NF) using a solvothermal process. A rigid segment-containing polysulfide (Poly(S- r -DIB)) was employed as a sulfur source and in situ intercalator, enabling efficient sulfidation and structural formation. The resulting FeS-Ni 3 S 2 /NF nanocatalyst demonstrated outstanding OER performance, achieving a low overpotential of 215 mV at 50 mA cm - ² and a low Tafel slope of 51 mV dec - ¹ . The catalyst exhibited remarkable stability, retaining over 85 % of its original activity after prolonged testing. Furthermore, in a two-electrode configuration, the catalyst reached a current density of 20 mA cm - ² at a low applied voltage of 1.41 V. This work introduces a new approach for fabricating sulfur-containing 1D nanomaterials with superior catalytic activity, paving the way for advancements in water splitting and sustainable hydrogen energy production.
研究领域:
材料科学
·
电催化
✓ 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）