JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Ting Feng,Fang Wang,Honglei Zhang,Fangya Guo,Tianxiang Yang,Haihan Li,Bo Zhao,Yong Liu,Haitao Wu,Yi Xiong,Fengzhang Ren
The advantage of FeS 2 in sodium storage is constrained by its poor inherent conductivity and unstable electrochemical activity. In this work, the hierarchical structure, FeS 2-x Se x nanoparticles with high activity encapsulated into the foam-like carbon network, are fabricated by in-situ chelation/self-crosslinking and synchronous sulfurization/selenization strategies. Inside, the incorporation of Se into FeS 2 markedly changes the local electron distribution around the Fe atoms and improves the intrinsic conductivity of FeS 2 . Outside, S, Se codoped foam-like carbon networks are evenly wrapped on the surface of FeS 2-x Se x nanoparticles, which accelerate the diffusion of internal charges into the electrolyte. Excitingly, the Se-replaced FeS 2-x Se x nanoparticles and carbon shell established an unobstructed pathway through robust Fe-S-C and Fe-Se-C bond connections, realizing the transmission of more charge transfer, and finally forming a high-density electron flow. This powerful charge transfer mode from the inside out realizes an overall conductivity improvement of the materials and markedly enhances the rate performance. Moreover, the obtained FeS 2-x Se x nanoparticles ensure high electrochemical activity, and the external carbon layer effectively manages the volume expansion during the sodium storage process. As expected, the FeS 2-x Se x @SSe/C(5:1) exhibits a high capacity (603.73 mAh g −1 at 1 A g −1 over 600 cycles), outstanding rate capability, and cycle performance (225 mAh g −1 at 3 A g −1 over 5231 cycles) for sodium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Nan He,Xiaolun Zhu,Fuxing Liu,Rong Yu,Zhonghua Xue,Xiuhui Liu
Developing artificial nanozyme has been demonstrated to be a promising approach to replace natural enzyme and promote industrialization of enzymes. Covalent organic frameworks (COFs) has aroused great interest in mimicking the structure of natural enzymes owing to its abundant functional group. However, without metal component, COFs suffered from unsatisfactory enzyme-like activity. Here, inspired by natural enzyme, FeS 2 -encapsulated COFs (FeS 2 @SNW-1) was designed as novel peroxidase-like nanozyme via hydrothermal and solvothermal method for the first time. The results of kinetic experiments demonstrate that the obtained peroxidase-like nanozyme has higher affinity for substrate molecules than natural horse radish peroxidase (HRP). Importantly, the potential application of FeS 2 @SNW-1 nanozyme was evaluated by dual-signal detection of the biomolecule glutathione (GSH) in the cell lysate. Meanwhile, the satisfactory results highlight that it is an effective strategy to improve the stability and reusability of the nanozyme by utilizing the outer layer of COFs to encapsulate the active site FeS 2 . In addition, facile fluorescent test strip was developed to detect GSH based on nanozyme. This study will not only provide favorable approach to design ideal nanozyme, but also broaden the analytical application of COF-based nanozyme.
研究领域:
生物化学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Huayu Wu,Nuo Xu,Zhouheng Jiang,Anyu Zheng,Qiaofang Shi,Rongguan Lv,Lubin Ni,Guowang Diao,Ming Chen
Necklace-box structural FeS 2 /WS 2 carbon nano-composite fibers (NB FeS 2 /WS 2 -CNFs) are fabricated by electrospinning-sulfuration-hydrothermal process. NB FeS 2 /WS 2 -CNFs exhibit the spatial confined structure, which is able to restrain volume expansion effectively in the process of Na + intercalation/deintercalation and improve the cycling stability and rate performance. NB FeS 2 /WS 2 -CNFs exhibit remarkable initial coulombic efficiency (ICE = 87.0%) and stable long cycle (~422.6 mA h g −1 at 0.5 A g −1 after 500 cycles) for sodium storage capability. The heterojunction interface between FeS 2 and WS 2 can alleviate the damage of the micro-crystal plane and enhance electrochemical kinetic process. The structure evolution and mechanism of sodium storage are explored by ex-situ methods, which further confirm the spatial and interface confinement effect distinctly. In addition, the electrochemical kinetic properties of lithium-ion batteries (LIBs), sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) are compared, thereby revealing the energy storage mechanism and different ion migration modes of the three batteries. This work provides a guide for the synthesis of bimetallic compounds based on the spatial confinement and heterojunction interface confined strategy that efficiently improves energy storage performance of electrode material.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yizhe Huang,Yuwen Chen,Xin Li,Ke Zhu,Zhiwei Jiang,Haoran Yuan,Kai Yan
Over the past few decades, organic pollution such as tetracyclines and dyes has caused harm to the environment, biology, and human health. Therefore, developing a green and efficient method for organic pollutant removal is urgent. Herein, a coral reef-like FeS 2 /C cs was successfully constructed by one-step solvothermal growth of FeS 2 on waste corn stalks-derived carbon. The as-prepared FeS 2 /C cs catalyst exhibited much better performance in activating peroxymonosulfate (PMS) for removing organic pollutants than the other candidates previously reported. Almost 100 % of oxytetracycline (OTC) could be degraded within 20 min. Various factors like PMS concentration, catalyst dosage, initial pH values, and temperature that influenced the degradation process were then investigated. Through quenching experiments and electron paramagnetic resonance (EPR), O 2 − , 1 O 2 , SO 4 − and OH were determined to be involved in attacking OTC, in which SO 4 − play a major role and OH acted as the secondary role. Subsequently, degradation pathways of OTC were rationally proposed. Toxicity simulations demonstrated that the toxicity of OTC could be effectively reduced after degradation. Universal experiments showed that FeS 2 /C cs + PMS system could also effectively degrade other typical tetracyclines and dyes, such as tetracycline (TC, ∼100 %), chlortetracycline hydrochloride (CTC, ∼100 %), methylene blue (MB, ∼83 %) and rhodamine B (RhB, ∼95 %). Moreover, the FeS 2 /C cs could remain high catalytic activity in five cycles test. This study provides a green and efficient method for organic pollution removal and technical guidance for analyzing its environmental toxicology.
研究领域:
环境科学
·
化学工程
·
材料科学
·
污染控制
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2025
·Vol. 18
·期 1
·15
·
IF 36.3
Li Tianlin,Zhao Danyang,Shi Meiyu,Tian Chao,Yi Jie,Yin Qing,Li Yongzhi,Xiao Bin,Qi Jiqiu,Cao Peng,Sui Yanwei
Quantum-scaled FeS 2 induces delocalized electronic regions, effectively reducing electrostatic potential barriers and accelerating Na + diffusion kinetics.
The free charge accumulation regions were formed by edge mismatched atoms, activating numerous electrochemically sites to enable high-capacity Na + storage and ultrafast-ion transport across wide temperature range (−35 to 65 °C).
The FeS 2 QD/MXene anode delivers superior wide-temperature capacity of 255.2 mAh g −1 (−35 °C) and 424.9 mAh g −1 (65 °C) at 0.1 A g −1 . The FeS 2 QD/MXene//NVP cell achieves a record energy density of 162.4 Wh kg⁻ 1 at − 35 °C.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米科技
·
固态物理
·
先进电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Nano
·
2023
·
IF 10.3
M. Feng,S. Xiao,Z. Liu,M. Li,X. Zhang,X. Chen,Y. Zhang,B. Chen,J. Liu
Explorations on ferroptosis combined with other tumor therapies have attracted much attention in recent years. To enhance the cargo-loaded capacity of the nanoparticles and integrate the ferroptosis as well as apoptosis, here, we reported the Pt-doped porous FeS 2 nanoparticles (Pt/pFeS 2 NPs) synthesized by the solvothermal method to realize the photothermal-enhanced photodynamic/ferroptosis antitumor combination therapy, with glucose oxidase (GOX)-loaded and 4T1 cell membrane-coated as the multifunctional Pt/pFeS 2 @ [email protected] nanovesicles (NVs). The porous structure provided more sites for Fenton reaction as well as photodynamic effect, which dramatically improve the level of reactive oxygen species . Additionally, the loaded GOX enhanced the generation of endogenous hydrogen peroxide and reduced the pH value of the tumor microenvironment, further promoting the Fenton reaction for ferroptosis. Moreover, Pt catalyzed the degradation of hydrogen peroxide to release oxygen, even facilitating the photodynamic therapy efficacy in the hypoxic tumor microenvironment. The rate of Fenton reaction and photocatalytic reaction were both significantly improved, leading to the acceleration of ferroptosis and photodynamic therapy with the increase of temperature under laser irradiation at 808 nm. Additionally, the in vivo antitumor therapy proved that Pt/pFeS 2 @ [email protected] NVs efficiently accumulated at tumor sites for photoacoustic imaging. To sum up, the multifunctional Pt/pFeS 2 @ [email protected] NVs could achieve photothermal-enhanced photodynamic/ferroptosis combination antitumor therapy and significantly inhibit the growth of 4T1 tumor without side-effects, shedding light on the promising application in photoacoustic image-guided tumor therapy system.
研究领域:
纳米技术
·
癌症治疗
·
生物医学工程
·
材料科学
·
光声成像
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 80
·65575-65582
·
IF 3.84
Jian Wu,Yuxuan Liang,Pengpeng Bai,Shuqi Zheng,Liqiang Chen
Pyrite FeS2 microspheres with an average size of approximately 1.1 μm were successfully synthesised in high yield via a facile and efficient microwave-assisted method. X-ray diffraction patterns and high-resolution transmission electron micrographs showed that the microspheres had a pure single crystalline phase. Scanning electron micrographs and transmission electron micrographs illustrated that the microspheres were uniform and well-distributed. The absorption spectra of the as-obtained microspheres showed that pyrite exhibited high absorbance in the visible region. The surfactants influenced the phase, morphology and absorption property of the products. Long reaction time allowed the formation of uniform pyrite FeS2 microspheres with smooth surfaces. The microwave-assisted method yielded products with better morphology and absorption properties than the high-pressure solvothermal method.
研究领域:
材料科学
·
化学
·
纳米技术
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2019
·Vol. 3
·期 7
·1749-1756
·
IF 4.912
Li Li,Pin Ma,Sabir Hussain,Lianjun Jia,Di Lin,Xiong Yin,Yuan Lin,Zhihai Cheng,Leyu Wang
Low-cost, robust counter electrodes (CEs) with merits of superior catalytic activity and long-term stability, and rapid electron/mass transport are highly desirable for dye-sensitized solar cells (DSCs). Herein, FeS2/carbon hybrids on carbon cloth (FeS2/C@CC), in which FeS2 nanoparticles were embedded in a carbon shell, were fabricated using an in situ deposition–carbonization–sulfurization approach. The hybrid electrode can provide a rapid mass/electron transport rate at the electrolyte/electrode interface, revealed by electrochemical impedance spectroscopy and Kelvin probe force microscope measurements. Moreover, the in situ grown carbon shell not only guaranteed the tight adhesion of the hybrid catalysts to the substrate, but also contributed to the long-term stability and partly to the catalytic activity. As a result, the device with the FeS2/C@CC CE presented a power conversion efficiency of 8.15%, exceeding that of Pt (7.61%). The as-developed hybrid FeS2/C@CC electrode is a very promising candidate as a robust CE in DSCs. Meanwhile, the fabrication method could offer new opportunities in exploring high-performance catalysts for various energy-related applications.
研究领域:
材料科学
·
电化学
·
太阳能
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2020
·
IF 4.302
Qian Guo,Guangbei Tang,Wenjie Zhu,Yongming Luo,Xiaoya Gao
Pyrite is the most abundant sulfide semiconductor mineral with excellent optical properties . However, few reports have investigated its photocatalytic activity because of the low photogenerated carrier separation efficiency. In this work, a Z-scheme FeS 2 /Fe 2 O 3 composite photocatalyst was fabricated in situ via structural transformation of pyrite through heat treatment. A remarkably enhanced photocatalytic performance was observed over the FeS 2 /Fe 2 O 3 composite photocatalyst. Compared with the pristine pyrite, the degradation efficiency of carbamazepine (CBZ) reached 65% at the added hexavalent chromium (Cr(Ⅵ)) concentration of 20 mg/L and the Cr(Ⅵ) was nearly completely reduced in the mixed system using FeS 2 /Fe 2 O 3 within 30 min under simulated solar light irradiation. The enhanced photocatalytic activity can be attributed to the efficient separation and transfer of photogenerated carriers in the FeS 2 /Fe 2 O 3 composite photocatalyst. This facilitated the generation of •OH, hole (h + ) and •O 2 − species, which participated in the photocatalytic reaction with CBZ. Based on the measurement of the active species and electric properties, a Z-scheme electron transfer pathway was proposed for the FeS 2 /Fe 2 O 3 composite photocatalyst. This work broadens the application potential of pyrite in environmental remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Senyang Wang,Jie Sun,Zixin Wang,Qian Zhang,Rao Fan,Wenming Zhang,Ling Li
NiS 2 -FeS 2 composite material is uniformly coated on CNFs by a one-step hydrothermal method with carbon nanofibers (CNFs) prepared by the electrostatic spinning method. A composite NiS 2 -FeS 2 /CNFs with Ti-mesh substrate counter electrode (NiS 2 -FeS 2 /CNFs CE) is prepared by scraping and coating method on a metal titanium mesh and applied to quantum dot sensitized solar cells (QDSSCs). The photoelectric power conversion efficiency of QDSSCs assembled on NiS 2 -FeS 2 /CNFs electrode substrate is 9.85%, which is much higher than that of traditional Cu 2 S/brass (7.85%). The exceptional achievement can be attributed to the superb amalgamation of the Ti-mesh's excellent electrical conductivity and the NiS 2 -FeS 2 /CNFs nanostructure's high and stable catalytic activity. The co-loading of NiS 2 and FeS 2 reduces the particle size of the composite, enhancing the specific surface area of the counter electrode. It provides abundant catalytic active sites for QDSSCs. The experimental results show that NiS 2 -FeS 2 is expected to be a competitive and efficient QDSSCs CE material.
研究领域:
材料科学
·
纳米技术
·
太阳能
·
电化学
✓ 已验证
DOI
高影响因子
EcoMat
·
2023
·Vol. 5
·期 4
·e12327
·
IF 14.6
Zhan Wu,Wenkui Zhang,Yang Xia,Hui Huang,Yongping Gan,Xinping He,Xinhui Xia,Jun Zhang
Sulfide solid state electrolyte (SSE) possesses high ionic conductivity and great processability but suffers from narrow electrochemical window. Conversion sulfide cathode FeS 2 has higher specific capacity and moderate redox potential, making it appropriate toward sulfide SSE. However, the complex reaction pathway and capacity fading mechanism in FeS 2 are rarely studied, especially in all-solid-state lithium battery (ASSLB). Herein, argyrodite sulfide SSE is paired with FeS 2 to investigate the electrochemical reaction pathways and the capacity fade mechanism. Instead of single conversion reaction, an anionic redox driven reaction of FeS 2 is revealed. The oxidization of Li 2 S vanishes and large quantity of inactive Li 2 S accumulates to cause the interfacial deterioration, along with the stress concentration during cycling, which leads to the rapid capacity fade of FeS 2 . Finally, a simple strategy of slurry-coated composite electrode with highly conductive network is proposed to direct the uniform deposition of Li 2 S and alleviate the stress concentration.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Shuting Xiao,Yao Lu,Miao Feng,Ming Dong,Zhong Cao,Xiaoge Zhang,You Chen,Jie Liu
Chemodynamic therapy (CDT) and photodynamic therapy (PDT) mediated by reactive oxygen species (ROS) hold great potential for cancer therapy. However, they are still limited by rigorous reaction conditions of efficacious Fenton reaction , reliance on oxygen, and inherent defects of traditional common photosensitizers (PSs). Herein, we reported an L-Buthionine-sulfoximine (BSO) modified FeS 2 nanoparticles (BSO-FeS 2 NPs) with enhanced ROS generation under single wavelength (808 nm) laser irradiation. First, FeS 2 NPs showed high photothermal conversion efficiency (49.5%) and enhanced O 2 − and OH generation capability via direct electron transfer presenting photothermal-improved Fenton reaction and photocatalytic ability. With the BSO modification, BSO-FeS 2 NPs could inhibit the synthesis of glutathione (GSH) and accelerate the accumulation of ROS, which further enhanced the PDT/CDT treatment efficacy and resulted in high in vivo tumor inhibition rate (95%). Second, BSO-FeS 2 NPs could activate the repolarization of macrophages from M2 to M1 for potential tumor immunotherapy. Last, BSO-FeS 2 NPs showed good performance on photoacoustic imaging (PAI). All these results establish the capability of BSO-FeS 2 NPs as nano-theranostic agents in PAI guided PTT/CDT/PDT combination therapy for cancer treatment.
研究领域:
纳米技术
·
癌症治疗
·
生物医学工程
·
成像科学
✓ 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）