ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yanhuan Wang,Li Li,Tishi Shen,Qingchun Han,Ling Hai,Yujuan Zhai
Designing and developing high-activity and long-term durability electrocatalysts for the oxygen evolution reaction (OER) has primary significance for breaking the bottleneck of water electrolysis. In this study, we synthesized a series of halogen-doped cerium–iron heterostructures with abundant oxygen vacancies on the surface of nickel foam using a simple hydrothermal method. In this structure, the conversion between Ce 3+ and Ce 4+ in CeO 2 generates abundant oxygen vacancies that effectively enhance catalyst activity. Concurrently, the combination of the heterostructure and anion doping design synergistically lowers the reaction energy barrier to boost catalytic activity, enabling robust kinetics for the OER reaction. Electrochemical tests demonstrated that the Br-CeO 2 /FeS-NF catalyst exhibited excellent OER performance in 1.0 M KOH solution, with an overpotential of only 204 mV at a current density of 10 mA·cm -2 and a Tafel slope of 31.6 mV·dec ‑1 . Meanwhile, the catalyst exhibited good long-term stability in alkaline electrolyte, with an operational stability of 72 h at 100 mA·cm -2 .
研究领域:
电催化
·
材料科学
·
能量存储与转换
·
纳米材料
·
无机化学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121494
·
IF 7.2
Dong Cheng,Jiaqing Luo,Runhao Ma,Fan Wu,Binbin Wang,Yingying Ma,Guangyu Lou,Feng He
Iron sulfide (FeS) nanoparticles demonstrate great potential for degrading organic contaminants under aerobic conditions through the production of hydroxyl radicals (•OH). However, its oxidative efficacy is often constrained by low electron utilization efficiency. In this study, we developed a polyacrylic acid (PAA)-mediated FeS oxidation system and investigated its effectiveness in sulfamethoxazole (SMX) degradation. The results indicate that PAA substantially enhanced the degradation of SMX by FeS at oxic conditions. As PAA dosage increased from 0.1 to 0.4 g/L, the observed degradation rate constants ( k obs ) of SMX were enhanced by 3- to 10-fold. Quenching experiments identified •OH as the primary reactive species responsible for SMX degradation. The electron utilization efficiency of FeS for •OH production was significantly increased from 0.3 % in FeS-only system to 2.1 % upon the addition of 0.4 g/L PAA. The enhancement was primarily attributed to the formation of dissolved Fe(II)-PAA complexes and the promotion of Fe redox cycling by PAA. By combining intermediate identification with density functional theory calculations, the degradation pathway of SMX was elucidated thoroughly. Additionally, the FeS/PAA/O 2 system exhibited exceptional degradation efficiency toward other common organic pollutants. X-ray diffraction and transmission electron microscopy revealed that PAA inhibited the formation of crystalline γ-FeOOH during FeS oxidation, which instead leads to the generation of amorphous structures. Collectively, this study provides fundamental insights into the oxidizing performance of FeS/PAA system and proposes a promising remediation technique for removing sulfonamide antibiotics.
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高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Chenle Zhang,Libo Deng,Peixin Zhang,Xiangzhong Ren,Yongliang Li,Tingshu He
The performance of dye-sensitized solar cells (DSSCs) is strongly influenced by the catalytic performance of counter electrode (CE) materials. Platinum (Pt) is extensively used as the CE for DSSC, but the high cost and low resistance to corrosion of Pt-based CE material restricts its practical application. Herein, we prepared α-Fe 2 O 3 and FeS nanorods (NRs) through electrospinning and investigated their valence states using Mössbauer spectroscopy and also assessed their catalytic performances as CE materials. It was found that upon the conversion of n-type semiconductor α-Fe 2 O 3 into p-type semiconductor FeS through the sulfurization process, the photoenergy conversion efficiency (PCE) was increased from 3.79% to 6.47% which is comparable with Pt. This increment might be related to the higher amount of electron-hole pairs and higher electrical conductivity , as well as the mixed valence of Fe element in the iron sulfide which can facilitate the transfer of electrons to the electrolyte. Furthermore, the FeS NRs show a much better long-term stability than Pt due to the interconnected conductive paths and excellent mechanical stability endowed by the one-dimensional morphology.
研究领域:
材料科学
·
可再生能源
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Changfan He,Xueying Zhang,Peng Lv,Hong Sui,Xingang Li,Lin He
To degrade the chlorobenzenes from contaminated soil, herein, a novel peroxomonosulfate-ferrate-FeS (PFI) hybrid oxidation system has been proposed. Take the o-dichlorobenzene as a typical contaminant, results of bottle tests show that the PFI oxidation system performs well in removing the pollutant, achieving up to 93% of removal efficiency in less than 30 min. With the orthogonal experiments, the effects of different parameters on the degradation of o-dichlorobenzene have been systematically investigated. The degradation of the o-dichlorobenzene by the PFI oxidation system is found to be well matched by the quasi-first order kinetic model. Further mechanistic study shows that, in this system, a proper addition of FeS could not only facilitate the activation of persulfate to produce sulfate radicals to oxidize o-dichlorobenzene, but also enhance the conversion of ferrate(VI) to produce Fe(V) and Fe(IV) to attack o-dichlorobenzene. In this way, the peroxomonosulfate and ferrate could perform synergistically with the presence of FeS in degrading the o-dichlorobenzene. The o-dichlorobenzene is found to be degraded into o-chlorophenol, 2,3-dichlorophenol, 3,4-dichlorophenol and chlorohexane, and finally to be CO 2 , H 2 O, HCl. In addition, results also show that the application of PFI oxidation system could reduce heavy metals in the soil and improve the soil permeability.
研究领域:
环境科学
·
化学
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DOI
高影响因子
Water Science and Engineering
·
2021
·
IF 0
Li Yin,Na Mi,You-ru Yao,Jing Li,Yong Zhang,Shao-gui Yang,Huan He,Xin Hu,Shi-yin Li,Li-xiao Ni
Ferrous sulfide (FeS) nanoparticles constitute an effective hexavalent chromium (Cr(VI)) treatment reagent. However, FeS nanoparticles aggregate easily, significantly limiting their engineering applicability. To overcome this shortcoming and further improve Cr(VI) removal efficiency, this study used tannic acid (TA) to modify FeS nanoparticles. The results demonstrated that TA-modified FeS nanoparticles, TA-nano-FeS, had a significantly reduced tendency to agglomerate, and maintained particle diameters of 10–100 nm, which were much shorter than diameters of FeS nanoparticles. In addition, TA-nano-FeS could combine the surface-active functional groups of TA. The maximum removal capacity of TA-nano-FeS was 381.04 mg/g, which was 2.92 and 1.83 times higher than those of TA and nano-FeS, respectively. Furthermore, the acidic condition was more beneficial for Cr(VI) removal, and the coexisting cations (Ca 2+ and Mg 2+ ) slightly decreased the removal efficiency of Cr(VI). Adsorption, reduction, and co-precipitation were the removal mechanisms, and the reaction products included FeCr 2 O 4 , Cr 2 O 3 , Fe 2 O 3 , Cr(OH) 3 , and S 8 . The results provided valuable information for the practical application of TA-nano-FeS in Cr(VI) removal.
研究领域:
环境科学
·
材料科学
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DOI
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 6
·1687-1701
·
IF 4
Na Xu,Qianqian Huang,Li Shi,Jia Wang,Xiangrong Li,Wei Guo,Dong Yan,Tianjun Ni,Zhijun Yang,Yunhui Yan
Ferrous and sulfur ions are essential elements for the human body, which play an active role in maintaining the body's normal physiology. Meanwhile, mussel-inspired polydopamine (PDA) possesses good hydrophilicity and biocompatibility. In the present work, ferrous sulfide embedded into polydopamine nanoparticles (PDA@FeS NPs) was designed and synthesized via a simple predoping polymerization–coprecipitation strategy and the intelligent PDA matrix successfully prevented the oxidation and agglomeration of FeS nanoparticles. Importantly, there was an obvious synergistic enhancement of the photothermal effect between polydopamine and ferrous sulfide. The PDA@FeS NPs exhibited excellent photothermal antibacterial effects against both E. coli and S. aureus. The near-infrared (NIR) light-mediated release of ferrous ions could reach about 26.5% under weakly acidic conditions, further triggering the Fenton reaction to produce toxic hydroxyl radicals (·OH) in the presence of hydrogen peroxide. The antibacterial mechanism could be attributed to cell membrane damage and cellular content leakage with the synergistic effect of PTT and CDT. This study highlighted the germicidal efficacy of PDA@FeS NPs and provided a new strategy for designing and developing next-generation antibacterial platforms.
研究领域:
材料科学
·
生物医学工程
·
微生物学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shunchao Wang,Sibing Xie,Man Zhang,Yongjie Jiang,Huwen Luo,Jun Tang,Fenghua Zheng,Qingyu Li,Hongqiang Wang,Qichang Pan
Metal sulfides (MSs) have attracted much attention as anode materials for sodium-ion batteries (SIBs) due to their high sodium storage capacity. However, the unsatisfactory electrochemical performance induced by the huge volume change and sluggish kinetics hampered the practical application of SIBs. Herein, guided by the heterostructure interface engineering, novel multicomponent metal sulfide-based anodes, including SnS, FeS, and Fe 3 N embedded in N -doped carbon nanosheets (SnS/FeS/Fe 3 N/NC NSs), have been synthesized for high-performance SIBs. The as-prepared SnS/FeS/Fe 3 N/NC NSs with abundant heterointerfaces and high conductivity of N -doped carbon nanosheet matrix can shorten the Na + diffusion path and promote reaction kinetics during the sodiation/desodiation process. Moreover, the presence of Fe 3 N can promote the reversible conversion of SnS and FeS during the cycling process. As a consequence, when evaluated as anode materials for SIBs, the SnS/FeS/Fe 3 N/NC NSs can maintain a high sodium storage capacity of 473.6 mAh g -1 after 600 cycles at 2.0 A g -1 and can still provide a high reversible capacity of 537.4 mAh g -1 even at 5.0 A g -1 This discovery offers a novel strategy for constructing metal sulfide-based anode materials for high-performance SIBs.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Jianxin Pan,Liangliang Liu,Hanping Pan,Lihui Yang,Meirong Su,Chaohai Wei
Metal sulfide-based biological process is considered as a promising biotechnology for next-generation wastewater treatment . However, it is not clear if simultaneous bio-reduction of nitrate and chromate was achievable in this process. This study aimed to evaluate the feasibility of metal sulfides (FeS and MnS) on simultaneous denitrification and chromate reduction in autotrophic denitrifying column bioreactors . Results showed that simultaneous reduction of nitrate and chromate was achieved using metal sulfides (FeS and MnS) as electron donors, in which sulfate was the sole soluble end-product. Apart from the sulfur element in the metal sulfides, Fe(II) and Mn(II) were also involved in nitrate and chromate reduction as indicative by the formation of their oxidative states compounds. In microbial communities , SHD-231 and Thiobacillus were the most predominant bacteria, which might have played important roles in simultaneous denitrification and chromate reduction. Compared to FeS, MnS showed a higher performance on nitrate and chromate removal, which could also reduce the toxic inhibition of chromate on nitrate reduction . According to results of XRD and XPS, as well as a lower sulfate production in the FeS system, FeS might have been covered easily to hydroxides due to its bio-oxidation, which limited mass transfer efficiency and bio-availability of FeS. The findings in this study offered insights in the development of promising approaches for the treatment of toxic and hazardous compounds using metal sulfide.
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·Vol. 60
·期 32
·22965-22976
·
IF 12.2
Cheng Dong,Ma Runhao,Tan Yuansen,Wu Zhongkuan,Ding Haoran,Wu Fan,Chen Si,Wang Huaqing,Lou Guangyu,Ma Yingying,Wang Binbin,He Feng
Oxygenation
of mackinawite (FeS) at redox interfaces
constitutes
a key biogeochemical process that generates hydroxyl radicals ( • OH) and facilitates contaminant attenuation. However,
the influence of common inorganic ligands such as tripolyphosphate
(TPP) on interfacial electron transfer in this process remains poorly
understood. Herein, 1.0 mM TPP increased cumulative • OH production approximately 23.5-fold over 180 min of FeS oxygenation,
with the electron utilization efficiency for • OH
production increasing from 0.33% to 8.18%. TPP enhanced • OH generation by promoting Fe(II) dissolution, thereby driving homogeneous
Fenton-like reactions, while facilitating Fe(III)/Fe(II) redox cycling
through solid–liquid interactions. Additionally, TPP acted
as an interfacial coordination modulator by rearranging the local
Fe(II) environment, and the resulting surface Fe(II)-TPP complexes
improved the utilization of structural electrons. Electrochemical
measurements and DFT calculations indicated that this interfacial
coordination suppressed structural Fe(II) oxidation and reduced unproductive
electron consumption, while lowering the energy barrier for H 2 O 2 -forming O 2 activation at TPP-modified
FeS sites. XRD, FTIR, and EXAFS analyses showed that TPP adsorption
inhibited lepidocrocite crystallization and redirected secondary mineral
evolution toward ferrihydrite-rich products. These findings elucidate
how ubiquitous ligands regulate mineral-water interfacial processes
and • OH generation, providing a basis for optimizing
FeS-based environmental remediation technologies.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yongjie Jiang,Anqi Li,Qichang Pan,Shunchao Wang,Man Zhang,Sijiang Hu,Yahao Li,Hongqiang Wang,Qingyu Li,Fenghua Zheng
Iron sulfides have shown great potential as anode materials for sodium-ion batteries (SIBs) because of their high sodium storage capacity and low cost. Nevertheless, iron sulfides generally exhibit unsatisfied electrochemical performance induced by sluggish electron/ion transfer and severe pulverization upon the sodiation/desodiation process. Herein, we constructed a yolk-shell FeS@NC nanosphere with an N-doped carbon shell and FeS particle core via a simple hydrothermal method, followed by in-situ polymerization and vulcanization. The FeS particles intimately coupled with N-doped carbon can accelerate the electron transfer, avoid severe volume expansion, and maintain structural stability upon repeated sodiation/desodiation process. Furthermore, the small particle size of FeS can shorten ion-diffusion distance and facilitate ion transportation. Therefore, the FeS@NC nanosphere shows excellent cycling performance and superior rate capability that it can deliver a high capacity of 520.1 mAh g −1 over 800 cycles at 2.0 A g −1 and a remarkable capacity of 625.9 mAh g −1 at 10.0 A g −1 .
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Materials
·
2025
·Vol. 5
·期 1
·N
·
IF 11.2
Wei Wang,Huichuan Tang,Joao Cunha,Maryam Karimi,Najeeb Lashari,Aqrab Ahmad,Hong Yin
To enhance the utilization of lithium-ion battery anodes, it is crucial to improve both the lithium storage stability and kinetics of transition metal sulfides. This optimization is critical for the development of battery technologies that are more efficient, durable, and environmentally sustainable. In this study, a facile electrospinning technique followed by a thermal treatment was used to fabricate a bimetallic sulfide/porous carbon fiber composite (FeS-ZnS/PCFs). Its stability was largely improved due to the buffered ability derived from its porous structure. The presence of FeS-ZnS grain boundaries fosters the generation of extra redox active sites, ultimately boosting the kinetics of lithium storage. The optimized composite material exhibits excellent stability and efficient lithium storage performance. Density functional theory calculations and kinetics analysis further clarify superior lithium storage capabilities of this material.
研究领域:
材料科学
·
能源技术
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产品关联
DOI
高影响因子
ANALYST
·
2026
·
IF 3.3
Xueying Zhu,Shuo Tian,Shuyun Chen,Yunsen Wang,Dianping Tang
As a key alkaloid, the concentration of xanthine in the body often reflects various physiological or pathological states of the human body. However, conventional methods for xanthine detection often suffer from time-consuming procedures and a narrow linear range. The present study screened 30 nanozymes with varying Fe/S molar ratios using a hydrogen peroxide-3,3',5,5'-tetramethylbenzidine (H2O2-TMB) colorimetric system and identified FeS-loaded nitrogen-doped carbon nanozyme (Fe300S5-NC) as a highly efficient catalyst. Inspired by the biological metabolic pathway of xanthine, an XOD/Fe300S5-NC/TMB colorimetric system was constructed for the detection of xanthine. The constructed colorimetric sensing platform demonstrated facile operation and rapid response, with a linear xanthine detection range of 10–1000 μM and a detection limit of 0.97 μM. This work provides a viable strategy for designing artificial enzymes with high peroxidase-like activity, indicating potential for biosensing applications.
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PubMed
高影响因子
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