APPLIED CLAY SCIENCE
·
2026
·
IF 5.2
Xinyu Lei,Limei Wu,Jiayu Li,Mengmeng Niu,Ning Tang,Meng Liu,Yi Zhou,Guocheng Lv
Tetracycline (TC), as a widely used antibiotic, poses severe threats to ecosystems and human health. In this study, the FeS 2 /halloysite nanotubes (FeS 2 /HNTs) microspheres as heterogeneous catalysts were used for sulfate radical-based advanced oxidation processes (SR-AOPs) to degrade TC. By assembling HNTs into the interior of FeS 2 microspheres, the diffusion of TC and persulfate (PS) to the active sites inside the FeS 2 microspheres was enhanced, thereby improving the degradation ability of the catalyst for TC. Within 90 min, the FeS 2 /HNTs + PS system achieved 85.13% removal efficiency of TC, over 30% higher than that of the FeS 2 + HNTs + PS system. Moreover, the FeS 2 /HNTs + PS system not only exhibited excellent degradation efficiency at a low catalyst dosage (0.05 g/L), but also demonstrated robust adaptability to TC concentrations of 10–60 mg/L and pH values of 3–9. The reactive oxygen species (ROS) in the system include · S O 4 − , ·OH, · O 2 − , and 1 O 2 , among which · S O 4 − and · O 2 − played a dominant role. Liquid chromatography-mass spectrometry identified 21 possible degradation intermediates. TC was mainly converted into small-molecule organics through pathways such as demethylation and ring opening. Furthermore, with the extension of degradation time, the mutagenicity and developmental toxicity of the intermediates decreased.
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DOI
高影响因子
CHEMOSPHERE
·
2024
·
IF 8.1
Chengbo Ma,Yuexu Liu,Jun Wang,Nkuissi Tchikou Evrard Deric,Yang Li,Xiaobin Fan,Wenchao Peng
Designing iron-based catalysts for Fenton-like reactions with peroxymonosulfate (PMS) as oxidants have attracted growing attentions. Herein, pyrite FeS 2 supported on carbon spheres (FeS 2 @C) is synthesized by a facile low-temperature method. The FeS 2 @C/PMS system can degrade carbamazepine (CBZ) effectively in a wide pH range. Sulfate radicals (SO 4 ·- ), hydroxyl radicals (·OH), superoxide radical (O 2 ·- ), and singlet oxygen ( 1 O 2 ) are the responsible reactive oxygen species (ROSs) for CBZ degradation. Moreover, in the simulated fixed-bed reactor, the FeS 2 @C/PMS system can maintain a high CBZ removal ratio of >95% for than 8 h, exhibiting its excellent stability. The outstanding performance of FeS 2 @C/PMS system is attributed to the presence of carbon spheres and lattice S 2− , which together promote the Fe(III)/Fe(II) redox cycle. The FeS 2 @C is a promising catalyst due to its facile synthesis, low cost, high efficiency, and excellent stability to activate PMS for organics degradation.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Materials
·
2026
·Vol. 19
·期 11
·2199
·
IF 3.7
Songkai Yan,Xuefeng Yin,Moxuan Chen,Ouyuan Lu,Chunyu Chen,Dianchun Ju
Transition metal sulfides are promising anode materials for lithium-ion batteries, but their practical application is limited by severe volume variation and sluggish reaction kinetics during cycling. Inspired by the natural mineral assemblage of seafloor massive sulfides (SMS), FeS2/CuFeS2composite anodes were prepared by a mechanochemical ball-milling method with mass ratios of 9:1 and 7:3 to reflect the major compositional characteristics of SMS. Among them, the 9:1 composite (F9C1) exhibited the best overall electrochemical performance, delivering a reversible capacity of 763.4 mAh g−1after 300 cycles at 1 C and retaining 46% of its baseline capacity at 5 C. Structural and electrochemical analyses suggested that the introduction of a small amount of CuFeS2likely promoted interfacial interactions between FeS2and CuFeS2phases, reduced charge-transfer resistance, and enhanced pseudocapacitive contribution, while preserving the capacity advantage of the FeS2host phase. These results demonstrate that mineral-inspired compositional design is an effective strategy for improving the lithium-storage performance of sulfide anodes and provides a feasible route for developing electrode materials inspired by naturally coexisting sulfide minerals.
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DOI
PubMed
高影响因子
CRYSTENGCOMM
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2016
·Vol. 18
·期 33
·6262-6271
·
IF 3.849
Yuxuan Liang,Pengpeng Bai,Jie Zhou,Tianqi Wang,Bingwei Luo,Shuqi Zheng
Non-toxic and earth-abundant pyrite (FeS2) is a promising photoelectric material for solar energy conversion and storage. In this study, an efficient FeS precursor was employed to synthesise successfully various shapes of pyrite FeS2, such as nanopolyhedra, nanocubes, nanooctahedra, and irregular nanocrystals via a simple hydrothermal method by adjusting the reaction conditions. Pyrite FeS2 nanopolyhedra and nanocubes were synthesised using the FeS precursor as the single iron source and thiourea (NH2CSNH2) as the sulphur source at various reaction temperatures. Nanooctahedra and irregular nanocrystals were obtained using sodium thiosulfate pentahydrate (Na2S2O3·5H2O) and sulphur powder as sulphur sources. The effects of polyvinylpyrrolidone content and the molar ratio of the FeS precursor to NH2CSNH2 on the formation of cubic shaped pyrite FeS2 were investigated. The products were characterised by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, transmission electron spectroscopy, X-ray photoelectron spectroscopy, and ultraviolet–visible and Raman spectroscopy. The proposed facile hydrothermal method used an efficient FeS precursor as the iron source, which can be easily controlled to produce high-purity pyrite FeS2 with desirable optical absorption properties.
研究领域:
材料科学
·
化学
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2022
·
IF 4.889
Liang-Liang Gu,Jian Gao,Sheng-You Qiu,Ke-Xin Wang,Chuang Wang,Ke-Ning Sun,Xiao-Dong Zhu
A simple method is demonstrated to fabricate novel FeS 2 spheres with abundant pore canals from Prussian-blue. Impressively, the porous FeS 2 spheres exhibit excellent hydrogen evolution performance in both acidic and alkaline media, deverling an overpotential of 136 mV and 158 mV to attain a current density of 10 mA cm −2 in 0.5 M H 2 SO 4 and 1.0 M KOH, respectively.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Meng Shao,Yuanyuan Cheng,Tao Zhang,Sheng Li,Weina Zhang,Bing Zheng,Jiansheng Wu,Wei-Wei Xiong,Fengwei Huo,Jun Lu
Sodium-ion batteries suffer the disadvantages of poor rate performance and cycling stability due to its sluggish sodiation kinetics. A rational design strategy for both materials compositions and structures has been proposed to meet these challenges. Herein, a triple-component composite derived from metal–organic frameworks, comprising FeS2, nitrogen–sulfur co-doped porous carbon, and reduced graphene oxide (FeS2@NSC/G), has been successfully synthesized. With the capacities contributions from different sodium storage routes (diffusion-controlled processes and surface capacitive processes) at varies rate conditions, it is aiming to make full use of each component in the electrode composite and their unique porous structures. Expected electrode properties have been achieved and related electrochemical behaviors have also been investigated. The strategy would present a promising thought for composites design, which could enhance high-rate electrochemical energy storage performances.
研究领域:
材料科学
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电化学
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能源存储
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纳米材料
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功能材料
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DOI
高影响因子
Materials
·
2019
·Vol. 12
·期 20
·3364
·
IF 2.972
Kefeng Pan,Yingying Zhai,Jiawei Zhang,Kai Yu
Electrolytic water splitting with evolution of both hydrogen (HER) and oxygen (OER) is an attractive way to produce clean energy hydrogen. It is critical to explore effective, but low-cost electrocatalysts for the evolution of oxygen (OER) owing to its sluggish kinetics for practical applications. Fe-based catalysts have advantages over Ni- and Co-based materials because of low costs, abundance of raw materials, and environmental issues. However, their inefficiency as OER catalysts has caused them to receive little attention. Herein, the FeS2/C catalyst with porous nanostructure was synthesized with rational design via thein situelectrochemical activation method, which serves as a good catalytic reaction in the OER process. The FeS2/C catalyst delivers overpotential values of only 291 mV and 338 mV current densities of 10 mA/cm2and 50 mA/cm2, respectively, after electrochemical activation, and exhibits staying power for 15 h.
研究领域:
材料科学
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电化学
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纳米科技
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能源化学
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催化化学
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DOI
高影响因子
ELECTROCHIMICA ACTA
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2020
·
IF 6.215
Weiji Dai,Ye Pan,Kai Ren,Yin-an Zhu,Tao Lu
Highly active and low-cost electrocatalysts toward oxygen evolution reaction are urgently-needed in the field of energy conversion. Previous works have demonstrated that pyrite-phase sulfides are promising electrocatalysts for oxygen evolution reaction, however the true active materials are still undetermined. Here, we report heteroatom Ni alloying into FeS 2 crystal via a facile ball-milling reaction method to enhance electrocatalytic performances of pyrite-phase FeS 2 . A series of (Fe 1-x Ni x )S 2 nanocrystalline materials are synthesized to systematically investigate the effects of Ni alloying on FeS 2 toward oxygen evolution reaction electrocatalysis . To achieve an current density of 10 mA cm −2 , the (Fe 0.5 Ni 0.5 )S 2 at carbon fiber paper electrode requires an overpotential as low as 241 mV with a Tafel slope of 51.8 mV dec −1 in 1 M KOH solution. Further investigations reveal that the derived hybrids of Fe 3 O 4 nanoflakes and nanoporous Ni doped FeOOH are true active materials for the (Fe 0.5 Ni 0.5 )S 2 under oxygen evolution reaction conditions. This study not only reveals the true active materials of the heteroatom alloyed bimetallic sulfides, but also provides a facile strategy to regulate the formation of active materials for enhanced oxygen evolution catalysis.
研究领域:
材料科学
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电化学
·
能量转换
·
催化
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Akkammagari Putta Rangappa,Wei Xiong,Xinxin Lu,Guohan Sun,Yixuan Liu,Jiangdong Dai,Jun Zhao
CTAB assisted synthesis of FeS 2 allows precise control over surface sulfur vacancies. • Surface-modified FeS 2 boosts O 2 activation and enhances reactive oxygen species (ROS) population. • Vs-rich FeS 2 lowers HMF conversion barrier, giving 15.73 fold higher DFF yield than pristine FeS 2 . • Synergy of Vs and Fe redox cycling in FeS 2 accelerates charge transfer and surface reactivity. • Tuning defects and redox states in FeS 2 enable sustainable and versatile photocatalysis. The photocatalytic conversion of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) using molecular oxygen (O 2 ) as the oxidant offers a sustainable route for biomass valorization, yet is limited by inefficient O 2 adsorption and activation on conventional photocatalysts. Herein, we report a Cetrimonium bromide (CTAB) assisted synthesis of iron pyrite (FeS 2 ) with engineered surface sulfur vacancies (Vs) that enable simultaneous activation of O 2 and HMF under solar light. Introduction of Vs increases the catalyst’s specific surface area and modulates the local electronic structure, particularly tuning the Fe 2+ /Fe 3+ redox landscape. These defect sites act synergistically, where Fe 2+ sites act as preferred O 2 adsorption centers, while adjacent Vs promote electron localization and transfer to adsorbed O 2 , thereby facilitating its activation through the oxidation of Fe 2+ to Fe 3+ . Concurrently, the modulated Fe redox states enable efficient HMF adsorption and oxidation through interaction with the activated O 2 species (•O 2 – and 1 O 2 ). This dual activation mechanism, driven by vacancy engineering and Fe redox dynamics, enhances charge transfer kinetics and surface reactivity, leading to a 15.7-fold increase in DFF production compared to prismatic FeS 2 . Our findings emphasize the critical role of Vs and Fe 2+ /Fe 3+ redox interplay in organizing simultaneous O 2 activation and HMF oxidation, advancing the rational design of efficient photocatalysts for biomass-derived chemical production. Download: Download high-res image (117KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhenzhen Ren,Shuai Li,Hongyu Liu,Hao Wang,Xiaobin Niu,Qi Yang,Liping Wang
Pyrite FeS 2 , as a promising conversion-type cathode material, faces rapid capacity degradation due to challenges such as polysulfide shuttle and massive volume changes. Herein, a localized high-concentration electrolyte (LHCE) based on dual-salt lithium bis(fluorosulfonyl)imide (LiFSI) and lithium bis(trifluoromethanesulphonyl)imide (LiTFSI) is designed to address the challenges. By the dual-salt strategy, we tailor a more desirable solvation structure than that in the single-salt system. Specifically, the solvation structure involving FSI − and TFSI − enables milder electrolyte decomposition, which reduces initial capacity loss. Meanwhile, it facilitates the formation of a stable and flexible cathode/electrolyte interphase (CEI), effectively mitigating side effects and accommodating volume changes. Consequently, the micro-sized FeS 2 realizes a capacity of 641 mAh g −1 after 600 cycles with a retention rate of 90%, significantly improving the cycling stability of the FeS 2 cathode. This work underscores the pivotal role of solvation structure in modulating electrochemical performances and provides a simple and effective electrolyte design concept for conversion-type cathodes.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2020
·
IF 14.588
Liang Cao,Xuanwen Gao,Bao Zhang,Xing Ou,Jiafeng Zhang,Wen-Bin Luo
Constructing a heterojunction and introducing an interfacial interaction by designing ideal structures have the inherent advantages of optimizing electronic structures and macroscopic mechanical properties. An exquisite hierarchical heterogeneous structure of bimetal sulfide Sb2S3@FeS2 hollow nanorods embedded into a nitrogen-doped carbon matrix is fabricated by a concise two-step solvothermal method. The FeS2 interlayer expands in situ grow on the interface of hollow Sb2S3 nanorods within the nitrogen-doped graphene matrix, forming a delicate heterostructure. Such a well-designed architecture affords rapid Na+ diffusion and improves charge transfer at the heterointerfaces. Meanwhile, the strongly synergistic coupling interaction among the interior Sb2S3, interlayer FeS2, and external nitrogen-doped carbon matrix creates a stable nanostructure, which extremely accelerates the electronic/ion transport and effectively alleviates the volume expansion upon long cyclic performance. As a result, the composite, as an anode material for sodium-ion batteries, exhibits a superior rate capability of 537.9 mAh g–1 at 10 A g–1 and excellent cyclic stability with 85.7% capacity retention after 1000 cycles at 5 A g–1. Based on the DFT calculation, the existing constructing heterojunction in this composite can not only optimize the electronic structure to enhance the conductivity but also favor the Na2S adsorption energy to accelerate the reaction kinetics. The outstanding electrochemical performance sheds light on the strategy by the rational design of hierarchical heterogeneous nanostructures for energy storage applications.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
·
电池技术
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Yingying Huang,Shuo Bao,Yansheng Yin,Jinlin Lu
The large volume variation and decomposition of pyrite iron sulfide (FeS 2 ) during the charge/discharge process are still a big issue limiting its application as electrode material for electrochemical energy storage. Herein, three-dimensional porous carbon (3DPC) decorated with FeS 2 nanospheres nanocomposites (FeS 2 /3DPC) are developed as electrode material for supercapacitors and sodium ion batteries (SIBs) through a facile hydrothermal approach. The FeS 2 /3DPC nanocomposites demonstrate much better electrochemical energy storage performances than pure FeS 2 . The 50 %FeS 2 /3DPC (FeS 2 content at 50% weight percent) shows an outstanding specific capacitance of 304F g −1 at 2 A g −1 . Moreover, the 50 %FeS 2 /3DPC as anode for Na + /Na half cell presents a high specific capacity of 770.3 mAh g −1 at 0.02 A g −1 , and shows a remarkable rate performance and cyclic stability. The results prove that 3DPC as FeS 2 substrate can not only improve the conductivity of electrode material, but also effectively inhibit the volume collapse of FeS 2 . The as-designed embedded structure and the synthesis technology should have a promising prospect for applying in electrochemical energy storage.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）