SENSORS AND ACTUATORS B-CHEMICAL
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2021
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IF 7.46
Chan Song,Haibo Liu,Linlin Zhang,Jie Wang,Chenglong Zhao,Qinyuan Xu,Cheng Yao
Nanozymes with high catalytic performance play a vital role in the construction of advanced biosensors for the signal detection and analysis of complicated biological samples. Herein, FeS nanoparticles (NPs) embedded in 2D carbon nanosheets (denoted as [email protected] ) are demonstrated to serve as excellent nanozymes with high catalytic activity . Notably, the introduction of mesoporous carbon substrate could effectively improve the enzymatic peroxidase-like catalytic ability of embedded FeS nanozymes, especially in the fluorescence catalytic system . Based on the high peroxidase-like activity of proposed [email protected] nanozymes, a facile method was then designed for H 2 O 2 assay with detection limit as low as 0.78 μM and 0.86 μM for the colorimetric and fluorescence method , respectively. The oxidation of the colorimetric and fluorescence substrates could be ascribed to the hydroxyl radical (·OH) produced by catalytic reaction of H 2 O 2 with [email protected] nanozymes. Thus, the [email protected] nanozymes-based H 2 O 2 sensing platform was further constructed to evaluate the antioxidant capacity of glutathione (GSH), cysteine (Cys), and gallic acid (GA). Notably, [email protected] nanozymes can keep the functionality in a broad pH range (2.0 ~ 9.0) for catalytic reaction, delivering a great potential in the fabrication of advanced biosensors.
研究领域:
生物化学
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纳米医学
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分析化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 8
·3828-3841
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IF 10.733
Jia Jia,Qiqi Zhang,Zong Li,Xiaoyun Hu,Enzhou Liu,Jun Fan
Two-dimensional (2D) layered heterostructures have attracted substantial attention in recent years as promising platforms for the direct conversion of renewable solar energy to chemical fuels due to their unique optoelectronic, transport, and interfacial properties. The rational structural design and tailored synthesis of semiconductor heterojunctions are critical to explore and achieve well-defined photocatalytic systems. Herein, we propose a design strategy for ultrathin 2D FeS–FeSe2 lateral heterostructures to achieve rapid spatial migration of photogenerated charge carriers and to facilitate favorable kinetics of target surface redox reactions for photocatalysis. The resultant composites have superior photocatalytic H2 generation activity (2071.1 μmol g−1 h−1) without any noble metal as a cocatalyst under sunlight and show marked photocatalytic durability after a continuous test for 20 h under alkaline conditions. In particular, we have found, for the first time, that the irradiated FeS–FeSe2 is active for producing H2O2 by the two-electron reduction of O2 in the photocatalytic degradation process of phenol solution. A series of mechanistic studies on photocatalysis clearly demonstrates that the pronounced photocatalytic performance of the 2D lateral heterojunction nanosheets could be a result of increased carrier density, longer electron lifetime and higher hole injection efficiency as well as a stepwise two-electron/two-step reduction pathway.
研究领域:
材料科学
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纳米技术
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光催化
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可再生能源
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DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2023
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IF 8.7
Zhengjie Peng,Shikai Li,Hao He,Yujiao Wen,Haolong Huang,Lezhu Su,Zhigang Yi,Xing Peng,Nan Zhou
Advanced oxidation processes (AOPs), based on sulfate radical (SO 4 ·- ) produced by peroxymonosulfate (PMS), can effectively mineralize refractory organic pollutants. However, the coexistence of anions and natural organic matters in actual wastewater prevents the application of AOPs. A simple one-step method was used to prepare FeS/Fe 3 O 4 co-modified biochar materials (FFB) that could activate PMS to degrade quinclorac (QNC) with a removal rate of 100%, even exhibiting optimum degradation of QNC reached 99.31% in irrigation water, demonstrating excellent anti-interference performance for co-existing anions and natural organic matter. Meanwhile, ecotoxicity analysis showed that the toxicity of degradation intermediates was lower than that of QNC. Characterization results demonstrated the even distribution of FeS and Fe 3 O 4 onto biochar, supplying abundant Fe 2+ to activate PMS producing reactive oxygen species (ROS), while the generated Fe 3+ after reactive continue to be reduced with sulfur species to promote the cycle of Fe 2+ /Fe 3+ . The coexistence of ·OH, SO 4 ·- , 1 O 2, and O 2 ·- in the FFB/PMS-QNC system suggest the possession of two pathway with free radical and non-free radical pathways to degrade QNC. The density functional theory (DFT) was used to analyze the adsorption sites and adsorption energy of PMS, as well as the differential charge density, which further proved the generation of SO 4 ·- , O 2 ·- and 1 O 2 . In addition, the electrochemical test results showed that electron transfer also played an important role in the degradation of QNC. This study provides a feasible approach for the removal of organic pollutants in actual water.
研究领域:
环境科学
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化学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 30
·75595-75609
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IF 5.8
Jiang Mengyun,Xu Zhongjun,Zhang Tingting,Zhang Xirong,Liu Ying,Liu Peng,Chen Xiaochun
In this work, FeS supported SBA-15 mesoporous silica catalyst (FeS@SBA-15) was synthesized successfully, characterized and first applied to persulfate (PS) activation for the degradation of imidacloprid in wastewater. The as-prepared 3.5-FeS@SBA-15 presented an impressive imidacloprid removal efficiency of 93.1% and reaction stoichiometric efficiency (RSE) of 1.82% after 5 min, ascribed to the synergetic effects of improved FeS dispersion and abundant surface sites by SBA-15. Electron paramagnetic resonance spectra and quenching experiments proved that both SO 4 ·- and ·OH were produced in FeS@SBA-15/PS system, and SO 4 ·- played a dominant role in the degradation process. The S 2- can accelerate the cycling of Fe(III)/Fe(II) during activation and increase the steady-state concentration of Fe(II). More importantly, the constructed heterogeneous system exhibited an efficient and stable catalytic activity over a wide range of pH (3.0-9.0), temperature (283K-313K), inorganic ion (NO 3 - ) and humic acid (1-20 mg/L). Moreover, the density functional theory calculations were conducted to predict the potential reaction sites of imidacloprid. Based on eighteen identified intermediates, four main degradation pathways were proposed: hydroxylation, dechlorination, hydrolysis, and the ring cleavage of the imidazolidine. ECOSAR analysis indicated hydroxylation and dechlorination played a key role in the detoxification of the formed compounds. These findings would provide new insights into the application of FeS@SBA-15 catalyst in wastewater treatment and the removal mechanism of imidacloprid from wastewater.
研究领域:
环境科学
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催化
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废水处理
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化学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Yunong Qin,Wanzhihan Zhang,Rui Wang,Ling Li,Xiaohui Zhao,Wenming Zhang
Herein, a novel strategy to establish a porous FeS–Co9S8/carbon aerogel (FeS–Co9S8/NCA) electrocatalyst for oxygen evolution reaction (OER) is fabricated via applying a green biomass carrageenan sulfuration method to CoFe–metal–organic frameworks (MOFs). The FeS–Co9S8/NCA exhibits optimized catalytic activity toward the OER with a lower overpotential of 322 mV, which is overmatched to the majority of transition metal sulfides (TMSs), as well as lifted long-term durability without evident variation in the LSV curves after 3000 cycles. Rechargeable liquid zinc–air battery (ZAB) assembled with FeS–Co9S8/NCA as the OER catalyst indicated a maximum power density of 176 mW cm–2 and superior cycling stability without raised polarization even after 48 h, outperforms commercial RuO2-based ZAB. Furthermore, the flexible solid-state ZAB built with FeS–Co9S8/NCA also demonstrated outdistance properties and bendability. The excellent performance stems from the hierarchical porous aerogel structure, which offers a multiscale mass/electron transport channel, together with the interfacial synergy effect between FeS and Co9S8, which serves as the active site of the OER reaction. Thus, this work instituted a novel strategy for obtaining both clean and efficient transition metal sulfide electrocatalysts for the OER reaction and an environmentally friendly biomass material-based sustainable electrocatalyst.
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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可持续化学
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Peng Wang,Zijing Liu,Yanwei Xing,Bin Fan,Yulong He,Ting Gao,Wenlei Zhang,Yunfei Gao,Shuang Wang,Jinping Li
Electrocatalytic nitrogen reduction reaction (ENRR) is considered as a potential pathway for green synthesis of ammonia. However, the kinetic barriers of ENRR remain a tough challenge, which is imperative to design high effective electrocatalysts for accelerated activation of N N. Herein, the FeS/ZnS/ZIF-8-L with rich heterogeneous interfaces was successfully fabricated by governing the ordered lasso arrangement of Fe and Zn nodes in Fe-2MIM/ZIF-8-L precursor, where Fe and Zn were separately fixed in the confined space of ZIF-8-L and Fe-2MIM. Such intertwined Fe-2MIM/ZIF-8-L structure was beneficial to control the location and concentration of FeS and ZnS after sulfidation pyrolysis. The high-efficiency FeS/ZnS/ZIF-8-L exposed more catalytic active sites and possessed optimal electronic structure resulting in the lowered energy barrier of ENRR and the enhanced adsorption and activation of N 2 , which confirmed by experimental and theoretical characterization results. As a result, FeS/ZnS/ZIF-8-L displayed an optimal NH 3 yield rate of 89.52 μg h −1 mg −1 and Faradaic efficiency of 16.78 %, which surpassed most reported heterostructured ENRR catalysts. Our findings shed a new insight to govern the interfaces density of heterostructured electrocatalysts by predesigning the location of two metals in precursor, which can motivate an in-depth exploration to advanced catalysts for various electrocatalytic reactions.
研究领域:
电催化
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材料科学
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纳米技术
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能源化学
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可持续化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Fei Duan,Yunqin Hu,Junfeng Lin,Mingyue Li,Hao Wu,Zhiqing Cui,Caihong Fang
To develop non-noble electrocatalysts with high activity and stability for oxygen evolution reaction (OER)/urea oxidation reaction (UOR) is crucial to boost the efficiency of overall water/urea splitting reaction (OWS/OUS) for H 2 production. Herein, we synthesized novel CeO 2 /Co(OH) 2 /FeS nanosheet arrays on nickel foam (CeO 2 /Co(OH) 2 /FeS@NF) through a simple two-step hydrothermal and following solvothermal routine. In this special structure, the ultra-thin 2D nanosheet morphology can adequately offer large contact area and thus abundant of active sites, facilitating significantly the mass transfer. Furthermore, the incorporation of FeS into CeO 2 /Co(OH) 2 will not only modify the electron structure but also provide a number of phase interfaces, which can improve the inherent electron conductivity and promote the electron transport. More importantly, the rich oxygen vacancies (O v ) sites can vary the coordination of metal centers, modulating both the charge distribution and M−O bonding strength. As results, the CeO 2 /Co(OH) 2 /FeS@NF shows superior low overpotentials of 178 mV/1.30 V at 10 mA cm −2 to OER/UOR. The activity keeps its low value of 232 mV/1.375 V even when the current density was increased to as high as 300 mA cm −2 . More importantly, the electrode of CeO 2 /Co(OH) 2 /FeS@NF//CeO 2 /Co(OH) 2 /FeS@NF just requires a low cell voltage of 1.41 V to realize OUS at a current density of 10 mA cm −2 . Specifically, we also realized solar-driven H 2 production. Plenty of H 2 bubbles were continuously generated with a high speed of 600 L h −1 m −2 on the working electrode surface once the solar panel was placed under the natural sunlight.
研究领域:
材料科学
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电化学
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能量转换与存储
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产品关联
DOI
高影响因子
PHYSICAL REVIEW B
·
2016
·Vol. 93
·期 14
·144505
·
IF 3.718
Hai Lin,Yufeng Li,Qiang Deng,Jie Xing,Jianzhong Liu,Xiyu Zhu,Huan Yang,Hai-Hu Wen
By using a hydrothermal method, we have successfully grown crystals of the newly discovered superconductor FeS, which has an isostructure of the iron-based superconductor FeSe. The superconductivity appears at about 4.5 K, as revealed by both resistive and magnetization measurements. It is found that the upper critical field is relatively low, with, however, a rather large anisotropy, $\mathrm{\ensuremath{\Gamma}}={[(d{H}_{c2}^{ab}/dT)/(d{H}_{c2}^{c}/dT)]}_{{T}_{c}}\ensuremath{\approx}5.8$. A huge magnetoresistivity ($290%$ at 9 T and 10 K, $H\phantom{\rule{4pt}{0ex}}\ensuremath{\parallel}c$ axis) together with a nonlinear behavior of Hall resistivity vs external field are observed. A two-band model is applied to fit the magnetoresistance and nonlinear transverse resistivity, yielding the basic parameters of the electron and hole bands.
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DOI
高影响因子
Results in Chemistry
·
2025
·
IF 4.2
Shaoming Zeng,Xiaofang Lai,Hai Li,Rongtao Ji,Duan Zhao,Jikang Jian
The common water contaminant ciprofloxacin (CIP) poses a significant threat to the health of both aquatic species and humans. Current iron-sulfide-based catalysts, predominantly nanoparticles, face limitations including aqueous instability, narrow pH adaptability, and agglomeration. To overcome these bottlenecks, we developed a new iron-sulfide-based catalyst. This study used FeS micro-flakes to degrade CIP. The degradation efficiency and reusability of FeS micro-flakes were evaluated under different conditions. The results indicate that FeS micro-flakes can achieve a removal efficiency of over 99 % within 10 min at pH 6, a temperature of 30 °C, a FeS dosage of 0.8 g/L, and an H 2 O 2 concentration of 10 mmol/L. even after five cycles, the removal efficiency of FeS remained above 99 %. The hydroxyl radical (HO·) was identified as the primary reactive oxygen species (ROS) by chemical quenching experiments and electron paramagnetic resonance (EPR). These results demonstrate the exceptional performance and reusability of the FeS heterogeneous Fenton catalyst
研究领域:
环境化学
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催化科学
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水污染与治理
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材料科学
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化学工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Guojun Lv,Tao Wang,Xuyang Zou,Jialing Shen,Jiangzhang Wang,Yan Chen,Fumin Wang,Xubin Zhang
Framework doped iron materials such as Fe-MFI zeolite is an important heterogeneous Fenton-like catalyst for tetracycline degradation. Introduction of mesopore can enhance the tetracycline degradation performance for hollow Fe-MFI zeolite, however its positive effect is extremely limited ascribed to the essence of active sites of confined framework iron species. In this work, highly dispersed copper oxide on the hollow Fe-MFI zeolite CuO/FeS-1 was synthesized via an impregnation procedure and applied as heterogeneous catalyst for the tetracycline degradation. The synthesized CuO/FeS-1 was characterized by Scanning electron microscopy, Transmission electron microscopy , X-ray diffraction, UV–vis absorption spectrometry, Fourier transform infrared spectroscopy , Nitrogen adsorption-desorption and X-ray photoelectron spectroscopy. At pH = 7.0, CuO/FeS-1 revealed the highest tetracycline degradation rate of 99.6 % at experimental conditions: [TCE] = 30 mg/L, [PMS] = 1.0 g/L, [Catalyst] = 1.0 g/L, 333 K, and the largest degradation rate constant of 1.26 min −1 , which was 3.4 folds of FeS-1 zeolite and 1.8 folds of CuO . Electron paramagnetic resonance (EPR) technology disclosed that •OH, SO 4 • − , 1 O 2 and •O 2 − species were all the active species for CuO/FeS-1 zeolite in the tetracycline degradation. Furthermore, possible intermediates in the degradation of tetracycline over CuO/FeS-1 zeolite were identified with liquid chromatography-mass spectrometry (LC-MS).
研究领域:
环境科学
·
催化化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hong Wang,Huimin Jiang,Chang Gao,Yanzhen Qiu,Hui Guo,Jingpeng Zhang,Mohammed A. Amin,Jianjian Lin
With the development and progress of society, there is an increasing demand for hydrogen energy. Developing efficient, low-cost catalysts for electrolytic hydrogen production is a challenging but significant task. In this work, we successfully achieved the in-situ growth of FeS/Fe 5 Ni 4 S 8 heterostructure catalyst on the surface of iron foam through a one-step solvothermal method. The heterostructure can produce more lattice defects. Additionally, the unique synergistic effect between Ni and Fe, along with rapid electron transfer kinetics at the heterointerface, collectively enhancing the electrocatalytic performance of the FeS/Fe 5 Ni 4 S 8 heterostructure nanomaterials. In 1 M KOH electrolyte, this catalyst achieves low overpotentials of only 181 mV and 193 mV for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), at the current density of 10 mA cm -2 , with Tafel slopes of 23.14 mV dec -1 and 88.21 mV dec -1 . After 200 h of OER and overall water splitting stability testing, the current density remains stable, providing insights into exploring efficient NiFe-based electrocatalysts.
研究领域:
材料科学
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能源化学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Central South University
·
2024
·Vol. 31
·期 4
·1163-1177
·
IF 3.7
Liu Hong-yu,Lyu Hua-gang,Zhang Wen,Jiang Jun,Li Xiao-hong,Xue Sheng-guo
To improve the remediation and antioxygenic properties of ferrous sulfide (FeS) nanomaterials toward heavy metals is the focus of current research. This study employed a combination of sodium carboxymethylcellulose (CMC) and sodium dodecyl benzene sulfonate (SDBS) for the modification of FeS nanomaterials supported by porous silicon (SiO 2 /FeS) to serves as an efficient amendment for cadmium pollution. The optimized slurry with the mass ratio of CMC/SDBS to be 1:3 showed enhanced dispersion and antioxidant effects on SiO 2 /FeS (the mass ratio of surfactant to FeS was 1:1). This formulation exhibited the smallest particle size ( D 50 = 0.66 µm) and the highest absolute Zeta potential values exceeding 30 mV. Also, the obtained products demonstrated effective remediation of cadmium-contaminated solutions, with Cd(II) primarily forming stable CdS and CdSO 4 products through ion exchange and chemical precipitation. The adsorption capacity of SiO 2 /FeS-CMC/SDBS 1:3 for cadmium in air and nitrogen was remained during 30 d, reaching about 158 mg/g. Notably, under low concentration Cd contamination, the adsorption capacity of SiO 2 /FeS-CMC/SDBS 1:3 exceeded that of SiO 2 /FeS-CMC and SiO 2 /FeS-SDBS without acidification risk. In summary, this research highlights the improved remediation and antioxygenic properties achieved through CMC and SDBS co-modification of SiO 2 /FeS, providing a new amendment for Cd remediation.
研究领域:
环境科学
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材料科学
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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）