JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Zhijie Cao,Xiaobo Ma,Wenhao Dong,Hailong Wang
An ordered tubular FeS@tubular mesoporous carbon composite consisting of FeS nanoparticles and tubular mesoporous carbon (CMK-5) is synthesized as anode material for Li- and Na-ions batteries. For applications in Li-ion batteries, the FeS@CMK-5 anode maintains a high reversible capacity of 720 mAh g −1 after 100 cycles at 200 mA g −1 , much better than that of pristine FeS (166 mAh g −1 ) and CMK-5 (472 mAh g −1 ). Na-ion storage measurements reveal that the FeS@CMK-5 composite delivers a reversible capacity of 445 and 391 mAh g −1 , respectively, at the current density of 1000 and 5000 mA g −1 over 100 cycles. The excellent electrochemical properties of FeS@CMK-5 for Li- and Na-ions storage can be attributed to its special structural superiority, which effectively accommodates the volume change, improves the electrical conductivity , and shortens the diffusion paths of Li- and Na-ions during the insertion/extraction process.
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
Journal of Water Process Engineering
·
2025
·
IF 6.7
Xianxian Sheng,Meesam Ali,Ruoxuan Xu,Mudassir Habib,Xiang Zhang,Qian Sui,Rongbing Fu,Shuguang Lyu
Mackinawite (FeS) is a promising catalyst for advanced oxidation processes (AOPs), but its role in activating sodium percarbonate (SPC)-dominated oxidation remains unclear. Herein, citric acid (CA) was introduced as a synergistic agent to enhance FeS activation of SPC, demonstrating that SPC/FeS and SPC/CA systems hardly removed 6.8 % and 7.6 % of fluoranthene (FLT), respectively, while SPC/FeS/CA process achieved a significant 96.2 % FLT degradation. Reactive oxygen species (ROS) analysis identified HO and O 2 − as the dominant contributors to FLT degradation. X-ray photoelectron spectroscopy (XPS) confirmed that S(-II) facilitated the Fe(III)/Fe(II) redox cycle, ensuring prolonged FLT degradation, which was further confirmed through Na 2 S experiments. GC–MS identified benzoic acid (BA) and phthalic acid (PA) as degradation intermediates with reduced toxicity than FLT, highlighting the environmental safety of the proposed technique. SPC/FeS/CA system effectively mitigated the inhibitory effects of neutral to weakly alkaline pH conditions (8.0–10.0) and achieved significant FLT degradation (60.7 %) even at pH 11.0. In soil slurry experiments, the process removed 80 % of FLT within 12 h. The system effectively degraded other polycyclic aromatic hydrocarbons (PAHs), including naphthalene and phenanthrene, demonstrating its broad applicability for remediating PAHs-contaminated environments. This study introduces a novel SPC-dominated AOP strategy, leveraging FeS as a robust catalyst, and offers valuable insights for advancing efficient PAHs remediation technologies.
研究领域:
环境科学
·
化学工程
·
土壤修复技术
·
高级氧化工艺
·
有机污染物降解
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Tao Xue,Han Miao,Mengge Wang,Jinlin Man,Yudi Yang,Shaoliang Lin,Xinxin Li
The emerging amorphous structure of metal nanomaterials as catalysts has revealed enormous potential; yet, their application is hindered by limited synthesis methods. In this study, we developed a facile strategy for synthesizing an amorphous FeS/heteroatom-doped carbon hybrid material as a highly efficient catalyst. Leveraging sulfur migration at high temperatures and the confinement effect provided by a hyper-cross-linked polymer (HCP), we achieved one-step carbonization and heterogeneous catalyst fabrication. The HCP offers multiple benefits and synergistic effects, serving as both a sulfur source and confinement matrix, attributed to its exceptional designability, structural stability, and cost-effectiveness. The resulting amorphous structure exhibited superior catalytic performance in the Fenton reaction compared to crystalline structures. Furthermore, the formation process and mechanism of this amorphous catalyst are extensively discussed. The reasons behind its exceptional catalytic efficiency in the Fenton reaction were also explored, suggesting that the acceleration mechanism of heteroatom-doped carbon may stem from its remarkable capacity for accepting and transferring electrons. This work has developed a novel and facile strategy for preparing amorphous FeS/carbon hybrid materials and offered valuable insights into optimizing the efficiency of the Fenton reaction for wastewater treatment and beyond.
研究领域:
材料科学
·
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2016
·Vol. 18
·期 1
·1-13
·
IF 2.101
Ma Shuzhen,Cai Qian,Lu Kailing,Liao Fan,Shao Mingwang
Abstract The bi-functional Au/FeS (Au/Co 3 O 4 ) composite was fabricated by in situ reducing Au nanoparticles onto the surface of FeS (Co 3 O 4 ). The as-prepared FeS possessed a multi-structure composed of plenty of nanoplates, which were coated by Au nanoparticles with an average size of ~47.5 nm. While the Co 3 O 4 showed a thin hexagonal sheet containing Au nanoparticles on its surface with an average size of ~79.0 nm. Both the as-prepared Au/FeS and Au/Co 3 O 4 composites exhibited excellent SERS performance, capable of enhancing the Raman signals of R6G molecules with the enhancement factor up to 1.81 × 10 6 and 7.60 × 10 4 , respectively. Moreover, Au/FeS (Au/Co 3 O 4 ) composite also has been verified to have intrinsic peroxidase-like activity, which could decompose H 2 O 2 into hydroxyl radicals and then degrade organic pollutants into small molecules. Therefore, SERS can be used to real-time and in situ monitoring the degradation process of R6G molecules, employing the Au/FeS (Au/Co 3 O 4 ) composite both as SERS substrate and catalyst. Graphical abstract SERS was used to real-time and in situ monitoring the degradation of R6G, employing the Au/FeS and Au/Co 3 O 4 composites both as SERS substrates and catalysts.
研究领域:
环境科学
·
纳米材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2017
·Vol. 184
·期 5
·1389-1396
·
IF 4.58
Jin Jiayi,Wu Wenqin,Min Hui,Wu Huimin,Wang Shengfu,Ding Yu,Yang Shuijin
Iron sulfides with different atomic ratios were synthesized by a hydrothermal method and used to modify a glassy carbon electrode. The various sulfides were compared to each other for their amperometric response to H 2 O 2 . It is found that FeS is the most adequate material. Operated in 0.1 M NaOH solution at 0.4 V (vs. Ag/AgCl), the sensor based on FeS displays a linear response that extends from 0.50 μM to 20.5 mM of H 2 O 2 , with a sensitivity of 36.4 μA mM −1 cm −2 and a detection limit of 0.15 μM (at an S/N ratio of 3). The sensor is selective, stable and reproducible.
Schematic of the synthesis of pomegranate flower-like FeS by a hydrothermal route using ferric chloride and thiourea (SC(NH 2 ) 2 ) as the precursors, and ethanolamine (EA) as the structure-guiding auxiliary agent. A glassy carbon electrode (GCE) modified with this material allows for amperometric sensing of hydrogen peroxide in 0.1 M NaOH solution with a 0.15 μM detection limit.
研究领域:
电化学
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Katam Srinivas,Zhuo Chen,Anran Chen,Fei Ma,Ming-qiang Zhu,Yuanfu Chen
The development of efficient single-atom catalysts (SACs) for the oxygen reduction reaction (ORR) remains a formidable challenge, primarily due to the symmetric charge distribution of metal single-atom sites (M-N 4 ). To address such issue, herein, Fe-N x sites coupled synergistic catalysts fabrication strategy is presented to break the uniform electronic distribution, thus enhancing the intrinsic catalytic activity. Precisely, atomically dispersed Fe-N x sites supported on N/S-doped mesoporous carbon (NSC) coupled with FeS@C core-shell nanoparticles (FAS-NSC@950) is synthesized by a facile hydrothermal reaction and subsequent pyrolysis. Due to the presence of an in situ-grown conductive graphitic layer (shell), the FeS nanoparticles (core) effectively adjust the electronic structure of single-atom Fe sites and facilitate the ORR kinetics via short/long-range coupling interactions. Consequently, FAS-NSC@950 displays a more positive half-wave potential ( E 1/2 ) of 0.871 V with a significantly boosted ORR kinetics (Tafel slope = 52.2 mV dec −1 ), outpacing the commercial Pt/C ( E 1/2 = 0.84 V and Tafel slope = 54.6 mV dec −1 ). As a bifunctional electrocatalyst, it displays a smaller bifunctional activity parameter (Δ E ) of 0.673 V, surpassing the Pt/C-RuO 2 combination (Δ E = 0.724 V). Besides, the FAS-NSC@950-based zinc-air battery (ZAB) displays superior power density, specific capacity, and long-term cycling performance to the Pt/C-Ir/C-based ZAB. This work significantly contributes to the field by offering a promising strategy to enhance the catalytic activity of SACs for ORR, with potential implications for energy conversion and storage technologies.
研究领域:
电化学
·
材料科学
·
能量转换与存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yanmin Qin,Shihao Zhao,Haoda Wu,Chenxu Sun,Jing Xu,Ming Yang,Ruidan Shi,Haifeng Bao
Transition metal sulfides such as FeS are promising anode materials for lithium-ion batteries (LIBs) due to their high theoretical capacity and natural abundance. However, their practical application is hindered by poor electronic conductivity, severe volume expansion, and irreversible structural degradation. To overcome these limitations, we report a dual-regulation strategy that integrates Mn doping and nitrogen-doped carbon (NC) coating to synergistically enhance both the lattice structure and interface characteristics of FeS. The resulting Mn-FeS/NC composite exhibits anisotropic lattice expansion, with the (102) crystal plane spacing increasing from 0.209 nm to 0.263 nm. Density functional theory (DFT) calculations reveal that Mn doping significantly lowers the Li + insertion/extraction energy barrier. Meanwhile, the NC coating forms a highly conductive and flexible network that buffers volume changes and enhances interfacial stability. Benefiting from this multiscale synergy, Mn-FeS/NC delivers a high initial discharge capacity of 1660.4 mAh g −1 at 0.1 A g −1 with an initial Coulombic efficiency of 75.8 %, and maintains 728.9 mAh g −1 after 600 cycles at 1.0 A g −1 . Even at 5.0 A g −1 , a capacity of 413.6 mAh g −1 is retained. Kinetic analysis confirms a dominant pseudocapacitive behaviour, contributing up to 72.3 % at high scan rates. This study not only provides quantitative insight into the synergistic effect of Mn doping and NC encapsulation, but also offers a viable design strategy for high-performance metal sulfide anodes in next-generation LIBs.
研究领域:
储能
·
材料科学
·
电化学
·
纳米技术
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2022
·
IF 8.91
Youru Yao,Li Yin,Cheng He,Jing Li,Chaloemporn Ponprasit,Yong Zhang,Xinying Cheng,Huan He,Shaogui Yang,Shiyin Li
The colloid of ferrous sulfide modified by humic acid (HA-n-FeS) shows good reduction and immobilization efficiency for variable-valence heavy metals in wastewater. The removal efficiency of HA-n-FeS for halogenated organic pollutants, however, remains unclear, especially in the absence and presence of oxygen. This study addressed this issue by exploring the effect and mechanism of dissolved oxygen on the degradation of tetrabromobisphenol A (TBBPA) by the HA-n-FeS colloid in water. The results showed that the removal efficiency of different concentrations of TBBPA (5,10, and 20 μm) by the HA-n-FeS colloid was 33.16%, 20.48%, and 22.37% in the absence of oxygen, respectively. When TBBPA reacted with the HA-n-FeS colloid, the concentration of Fe(II) and S(-II) remained stable. The adsorption of HA-n-FeS was the main mechanism of removing TBBPA in the absence of oxygen. In the presence of oxygen, the removal efficiency of TBBPA by the HA-n-FeS colloid was 82.37%, 56.80%, and 43.78% (for the above-mentioned TBBPA concentrations), respectively. In addition, the removal capacity of TBBPA by HA-n-FeS was 39.63, 52.21, and 89.75 mg/g, respectively. The concentration of Fe(II) and S(-II) decreased rapidly in time. Among them, the HA-n-FeS colloid removed part of the TBBPA through chemical adsorption . The main way of chemical adsorption was pore adsorption and functional group (olefin C C, phenolic hydroxyl group O–H, alcohol group C–O) combination. Besides, the HA-n-FeS colloid degraded part of the TBBPA into BPA through reduction, in which 17.72% of TBBPA was removed by the reduction of HA-n-FeS colloid. Fe(II) was the main contributor to the reductive degradation of TBBPA. Furthermore, active species ( 1 O 2 and •O 2 − ) played a minor role in the removal of TBBPA by the HA-n-FeS colloids with oxygen, where 13% of TBBPA was removed by 1 O 2 and •O 2 − . Therefore, in practical applications, the aeration method can be used to significantly improve the removal efficiency of TBBPA by HA-n-FeS colloids in water.
研究领域:
环境科学
·
水处理
·
污染物去除
·
胶体化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Zhen Sun,Taotao Xia,Hongyang Wang,Weiyi Yang,Shuang Gao,Qi Li
The Electro-Fenton process is getting a rapid development recently as a novel advanced electro-oxidation technology for the removal of organic pollutants from water. In this work, a three-dimensional (3D) porous Fe 3 N/FeS composite electrode was created from a Fe 2 (SO 4 ) 3 -based composite ink by the direct-writing 3D printing technology combined with a high temperature heat treatment under ammonia atmosphere. Fe 3 N served as the conductive skeleton of the electrode, while FeS could provide Fe 2+ to react with in-situ generated H 2 O 2 in the Electro-Fenton process to generate ·OH radicals. Thus, it could eliminate the need of external ferrous ion addition. The 3D porous Fe 3 N/FeS composite electrode had desired 3D interconnected macro-channels for efficient mass transport and rough rod surfaces to provide more active sites, which resulted in its superior degradation performance on organics than its traditional two-dimensional (2D) plate counterpart. A two-step H 2 O 2 production path was found on the 3D Fe 3 N/FeS composite electrode, which had been found to possess a faster reaction kinetics. It effectively degraded rhodamine B (RhB) within a wide pH range from ∼3 to ∼ 10, demonstrated stable performances in repeated uses, and had low iron ion leaching, all of which were beneficial for its potential applications. Furthermore, it also demonstrated effective degradation performances on antibiotics of amoxicillin (AMX) and tetracycline hydrochloride (TC-HCl) in both deionized (DI) water and tap water matrixes, indicating its potential to solve the emerging contaminant problem in real water treatment practices.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Changjin Ou,Sujuan Yuan,Fujii Manabu,Ke Shi,Mohamed Elsamadony,Juntong Zhang,Juan Qin,Jian Shi,Zhipeng Liao
Anaerobic biotechnology for wastewaters treatment can nowadays be considered as state of the art methods. Nonetheless, this technology exhibits certain inherent limitations when employed for industrial wastewater treatment, encompassing elevated substrate consumption, diminished electron transfer efficiency, and compromised system stability. To address the above issues, increasing interest is being given to the potential of using conductive non-biological materials, e,g., iron sulfide (FeS), as a readily accessible electron donor and electron shuttle in the biological decontamination process. In this study, Mackinawite nanoparticles (FeS NPs) were studied for their ability to serve as electron donors for p -chloronitrobenzene ( p -CNB) anaerobic reduction within a coupled system. This coupled system achieved an impressive p -CNB removal efficiency of 78.3 ± 2.9% at a FeS NPs dosage of 1 mg/L, surpassing the efficiencies of 62.1 ± 1.5% of abiotic and 30.6 ± 1.6% of biotic control systems, respectively. Notably, the coupled system exhibited exclusive formation of aniline (AN), indicating the partial dechlorination of p -CNB. The improvements observed in the coupled system were attributed to the increased activity in the electron transport system (ETS), which enhanced the sludge conductivity and nitroaromatic reductases activity. The analysis of equivalent electron donors confirmed that the S 2- ions dominated the anaerobic reduction of p -CNB in the coupled system. However, the anaerobic reduction of p -CNB would be adversely inhibited when the FeS NPs dosage exceeded 5 g/L. In a continuous operation, the p -CNB concentration and HRT were optimized as 125 mg/L and 40 h, respectively, resulting in an outstanding p -CNB removal efficiency exceeding 94.0% after 160 days. During the anaerobic reduction process, as contributed by the predominant bacterium of Thiobacillus with a 6.6% relative abundance, a mass of p -chloroaniline ( p -CAN) and AN were generated. Additionally, Desulfomonile was emerged with abundances ranging from 0.3 to 0.7%, which was also beneficial for the reduction of p -CNB to AN. The long-term stable performance of the coupled system highlighted that anaerobic technology mediated by FeS NPs has a promising potential for the treatment of wastewater containing chlorinated nitroaromatic compounds, especially without the aid of organic co-substrates.
研究领域:
环境工程
·
生物技术
·
废水处理
·
化学工程
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Liyuan Wu,Pengpeng Guo,Xin Wang,Haiyan Li,Xiaoran Zhang,Kaiyu Chen,Peng Zhou
The incorporation of heterostructure and vacancies will bring new strategies to improve the intrinsic activity of catalysts. Herein, the CoS@FeS heterostructure catalyst with sulfur vacancies (SVs) was fabricated by a simple hydrothermal strategy, which can synergistically trigger peroxymonosulfate (PMS) activation toward the efficient degradation of sulfamethoxazole (SMX) ( k obs , 0.3334 min −1 ) through a non-radical/radical oxidized pathway. SO 4 • – , •OH and 1 O 2 were regarded as the main reactive oxygen species (ROSs). Mechanism studies revealed that the synergy of SVs and heterostructure played an electron density adjusting role for the PMS activation into SO 4 • – and •OH, as well as the continuous generation of •O 2 − from O 2 , thereby in favor of 1 O 2 . The SVs availed the adsorption of PMS and dissolved oxygen (DO) on the surface, the continuous electron transmission would be consolidated through the charge transfer efficiency (CTE) of heterostructure. Meanwhile, the integration of SVs with heterostructure reduced the adsorption energy of PMS (-3.82 eV) on the interface of the catalyst according to the density functional theory (DFT) calculations, which overcame the repulsion effect between negatively charged HSO 5 – and CoS@FeS, and enhanced the charge transfer efficiency to accelerate the PMS activation for generating SO 4 • – and •OH. This work will propose a new approach for synergistically stimulating the intrinsic activity of catalysts to improve environmental remediation.
研究领域:
环境科学
·
催化
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
IF 1.6
You Yanran,Zhu Hongtao,Dong Hongliang,Sheng Guodong
In this work, FeS was anchored on mesoporous silica microspheres (SiO 2 200, SiO 2 500, and SiO 2 1000), and named as FeS@SiO 2 (i.e., FeS@SiO 2 200, FeS@SiO 2 500, FeS@SiO 2 1000), in adsorbing and detoxifying U(VI)/Cr(VI) from wastewater. Results demonstrated that FeS@SiO 2 exhibited higher efficiency towards U(VI)/Cr(VI), outperforming FeS and SiO 2 alone. Kinetic investigations revealed that adsorption of U(VI)/Cr(VI) followed pseudo–second–order model best, highlighting effective chemical interplay. XPS investigations demonstrated multi–species which was included FeS, Fe(II), S 2− and polysulfide (S 2 2− , S n 2− ) could be employed as reductants for U(VI)/Cr(VI) adsorption. The combination of SiO 2 and FeS offered an enhanced efficiency for U(VI)/Cr(VI), making these composites promising materials in water purification. Graphical
研究领域:
环境科学
·
纳米技术
·
材料科学
·
水处理
·
化学工程
✓ 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）