Energy Storage Materials
·
2020
·
IF 16.28
Chong Bai,Huijie Jin,Zongshuai Gong,Xizheng Liu,Zhihao Yuan
Aqueous Fe-I 2 rechargeable batteries are highly desirable for large-scale energy storage because of their intrinsic safety, cost effective, and wide abundance of iron and iodine. However, their development suffers from Fe dendrite growth and severe shuttle effect during cycling. Herein, we demonstrate a high-performance Fe-I 2 rechargeable battery using metal iron as anode, iodine/hierarchically porous carbon composite as cathode and an eco-friendly aqueous electrolyte. The anode modified with ascorbic acid effectively suppresses the formation of iron dendrite, while the cathode doped with nitrogen greatly reduces the shuttle of iodine species. The battery operates a reversible redox reaction of FeI 2 /I 2 pair with fast kinetics. A capacity ~190 mAh g -1 at current densities up to 5000 mA g -1 and excellent cycle stability of 100% after 550 cycles at 2000 mA g -1 are obtained. The battery achieves superior power density of ~1300 W kg -1 at 120 Wh kg -1 and high energy density of 130 Wh kg -1 at 356 W kg -1 . Our study shows great promise for high-performance rechargeable batteries with low-cost, eco-friendliness and high safety.
研究领域:
能源存储
·
电池技术
·
材料科学
✓ 已验证
DOI
高影响因子
Environmental Science-Advances
·
2023
·Vol. 2
·期 5
·731-739
·
IF 0
Wen Wen,Yina Liu,Zhongping Li,Guangming Wen,Hung-Wing Li,Li Li
In this study, we report a simple pyrolytic strategy for N–C co-doped Fe-based nanoparticles (Fe–N–C) and exhibit their oxidase-mimicking and peroxidase-mimicking activity in a chromogenic reaction with 3,3′,5,5′-tetramethylbenzidine dihydrochloride (TMB) as a substrate. Structural analysis revealed that Fe–NX and Fe3C structures were formed with Fe-Imace coordination compounds as precursors and melamine as the nitrogen source, which provided abundant active sites for the Fe–N–C nanozyme. Interestingly, owing to the blocking effect triggered by π–π stacking between the tetracycline antibiotics (TCs) tetraphenyl skeleton and Fe–N–C, the substrate affinity of the Fe–N–C was significantly blocked, resulting in the solution fading. Under the optimum conditions, the UV absorption intensity versus the concentration of TCs was found to be linear over the range of 0.08–90 μM for tetracycline (TC), 0.1–80 μM for chlortetracycline (CTC) and 0.09–100 μM for oxytetracycline (OTC). The detection limits were 62 nM for TC, 85 nM for CTC and 88 nM for OTC. The Fe–N–C displayed good storage and long-term stability when stored at 4 °C for 30 days. In addition, based on its superparamagnetism, Fe–N–C can be effectively recycled and reused through an external magnetic field, avoiding secondary pollution.
研究领域:
分析化学
·
生物医学工程
·
环境科学
✓ 已验证
DOI
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 46
·17265-17274
·
IF 4.39
Yun-Wu Li,Shi-Kun Su,Cai-Zhen Yue,Jun Shu,Peng-Fang Zhang,Fang-Hui Du,Su-Na Wang,Hui-Yan Ma,Jie Yin,Xin Shao
Electrochemical water splitting is convinced as one of the most promising solutions to combat the energy crisis. The exploitation of efficient hydrogen and oxygen evolution reaction (HER/OER) bifunctional electrocatalysts is undoubtedly a vital spark yet challenging for imperative green sustainable energy. Herein, through introducing a simple pH regulated redox reaction into a tractable hydrothermal procedure, a hierarchical Fe3O4@MnOx binary metal oxide core–shell nano-polyhedron was designed by evolving MnOx wrapped Fe3O4. The MnOx effectively prevents the agglomeration and surface oxidation of Fe3O4 nano-particles and increases the electrochemically active sites. Benefiting from the generous active sites and synergistic effects of Fe3O4 and MnOx, the Fe3O4@MnOx-NF nanocomposite implements efficient HER/OER bifunctional electrocatalytic performance and overall water splitting. As a result, hierarchical Fe3O4@MnOx only requires a low HER/OER overpotential of 242/188 mV to deliver 10 mA cm−2, a small Tafel slope of 116.4/77.6 mV dec−1, combining a long-term cyclability of 5 h. Impressively, by applying Fe3O4@MnOx as an independent cathode and anode, the overall water splitting cell supplies a competitive voltage of 1.64 V to achieve 10 mA cm−2 and super long cyclability of 80 h. These results reveal that this material is a promising candidate for practical water electrolysis application.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
PubMed
高影响因子
BIOMATERIALS
·
2013
·
IF 7.604
Shuai Xu,Jing Liu,Dian Li,Liming Wang,Jia Guo,Changchun Wang,Chunying Chen
We propose a modular synthetic strategy to constitute metallosalphen prodrugs in the form of coordination polymer nanoparticles , comprising magnetite nanocrystal colloidal cluster as core and salphen-In III coordination polymer as shell. These composite nanoparticles are not only equipped with intense photoluminescence , sensitive magnetic responsiveness and pH-dependent degradability, but also serve as prodrugs to accomplish intercellular conversion from non-toxic nanoparticles (Fe 3 O 4 @Salphen-In III ) to pharmacologically active complexes (Fe–salphen), allowing to specifically inhibit the proliferation of A549 cancer cells via caspase activation.
研究领域:
材料科学
·
生物医学工程
·
肿瘤学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yaping Zhang,Yanan Zhao,Yixin Qi,Yanyan Lin,Yuhang Cheng,Mengmeng Sun,Lei Wang
Photogenerated holes have emerged as critical mediators for activating peroxymonosulfate (PMS) in the coupled photocatalytic PMS activation system, enabling novel dual-channel activation pathway. A tandem system based on Fe-MOF@BiVO 4 (Vis/PMS/Fe-MOF@BVO) with spatially separated active sites was constructed to form a dual-channel activation mechanism. The BiVO 4 (010) face provides the active sites for photogenerated electrons to drive the Fe 3+ /Fe 2+ cycle and activate PMS, while the BiVO 4 (110) face serves as the active sites for photogenerated holes to activate PMS. Consequently, the Vis/PMS/Fe-MOF@BVO system achieved complete degradation of 10 mg/L BPA within 6 min, with a degradation rate constant (K obs ) of 0.74 min −1 . It also demonstrated high removal efficiency for various organic pollutants with excellent immunity to interference and reusability. This work provides a new insight into the coordinative mechanism for coupled photocatalysis and PMS activation system.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Ning Liu,Fuhao Fei,Wangxi Dai,Jianqiu Lei,Fukun Bi,Botao Wang,Guixiang Quan,Xiaodong Zhang,Liang Tang
Herein, a highly efficient Z-scheme SnS 2 /MIL-88B (Fe) (SnSFe) heterojunction was successfully synthesized to use both as photocatalysts and persulfate (PS) activator for ibuprofen (IBP) degradation. Flower-liked SnS 2 was uniformly loaded on MIL-88B (Fe), and SnSFe retained the original polyhedral morphology of MIL-88B (Fe). The highest removal of IBP was achieved in the presence of SnSFe with 0.5% SnS 2 (SnSFe0.5). Characteristic results and density functional theory calculations demonstrated that the enhanced degradation of IBP was due to the difference in Fermi energy levels of SnS 2 and MIL-88B (Fe) leading to electrons transferred from SnS 2 to MIL-88B (Fe), and Sn O bond was formed in SnSFe. , OH and O 2 − were the main active species in SnSFe0.5/PS/visible light system. Z-scheme heterojunction of SnSFe was constructed to propose the degradation mechanism. This research revealed that the synergism of photocatalysis and PS activation using SnS 2 /Fe-based MOFs composites possessed great potentials in wastewater remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Jiqiong Lian,Yihui Wu,Houan Zhang,Siyong Gu,Zhiwei Zeng,Xiaoyun Ye
Design of inexpensive and highly efficient bifunctional electrocatalyst is paramount for overall water splitting . In this study, amorphous Ni–Fe–P alloy was successfully synthesized by one-step direct-current electrodeposition method. The performance of Ni–Fe–P alloy as a bifunctional electrocatalyst toward both hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) was evaluated in 30 wt% KOH solution. It was found that Ni–Fe–P alloy exhibits excellent HER and OER performances, which delivers a current density of 10 mA cm −2 at overpotential of ∼335 mV for HER and ∼309 mV for OER with Tafel slopes of 63.7 and 79.4 mV dec −1 , respectively. Moreover, the electrolyzer only needs a cell voltage of ∼1.62 V to achieve 10 mA cm −2 for overall water splitting. The excellent electrocatalytic performance of Ni–Fe–P alloy is attributed to its electrochemically active constituents, amorphous structure, and the conductive Cu Foil.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Ruixue Shi,Tianbao Liu,Jing Lu,Xiangjing Liang,Andrei Ivanets,Junqin Yao,Xintai Su
Biochar derived from municipal sludge can be applied to adsorption. But it usually requires activation and pickling due to the generation of impurities such as metal oxide particles, which is uneconomical. Here, a facile strategy, acidification-one-step calcination, was developed and sludge-based Fe–C materials with good Cr(VI) removal effect were obtained by regulating the amount of hydrochloric acid . The results show that the adsorption capacity of Fe/C-5 (the best sample) for Cr(VI) was 150.84 mg g −1 . According to the Langmuir isotherm and pseudo-second-order kinetic model, the removal of Cr(VI) by Fe/C-5 is spontaneous and endothermic chemisorption process. In addition, Fe/C-5 has good ability to remove Cr(VI) under the interference of coexisting ions, and has good cycle stability. The removal of Cr(VI) by Fe/C-5 is considered to be synergistic process of adsorption and reduction. The Fe atoms were highly dispersed in Fe/C-5 and tightly bonded with C atoms, which not only strengthened the Cr(VI) adsorption by electrostatic attraction, but also activated the C atoms in the biochar material, so that the C atoms can reduce Cr(VI) to Cr(III) under acidic conditions. This may be due to the fact that acid pretreatment converted the iron in municipal sludge in the form of Fe–O/OH to free Fe 3+ and entered the C lattice during the calcination process. In this work, Fe–C materials with excellent Cr(VI) adsorption capacity were prepared by one-step calcination method, which has important reference significance for the resource utilization of municipal sludge.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Haoyang Fu,Ruizhao Wang,Qianyu Xu,Minwang Laipan,Chenliu Tang,Weixian Zhang,Lan Ling
Typical antineoplastic agent doxorubicin (DOX) contamination is a major environmental concern and its efficient purification remains a daunting challenge so far. This work explored the potential of Fe/Pd-doped graphite carbon nitride (g-C 3 N 4 @Fe/Pd) for DOX removal from water, involving the removal performance, mechanism, and pathway. Structural characterization of g-C 3 N 4 @Fe/Pd showed that the metallic Pd clusters are decorated on the surface of uniformly distributed iron nanoparticles (~ 28 nm) on g-C 3 N 4 . The existence of g-C 3 N 4 effectively relieved the agglomeration and overgrowth of iron nanoparticles, the strong coupling effect among the Fe, Pd and N demonstrates the excellent DOX removal performance (k = 0.115 min −1 ) with versatility under different initial concentrations (30–150 mg/L) and material dosages (0.1–0.4 g/L). Three possible degradation pathways of DOX were proposed, where catalytic saccharide moiety elimination is the primary pathway. Importantly, intermediates exhibit lower toxicity and the final degradation product is efficiently adsorbed by g-C 3 N 4 @Fe/Pd.
研究领域:
环境科学
·
材料科学
·
药学
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2025
·
IF 1
Qian Wang,Haifeng Yang,Shanni Lin,Wei Ji,Shu Zhang,Wenjie Wang,Jiazheng Yu,Jingwen Gao,Xiulei Fan
The advanced oxidation processes (AOPs) employing bimetallic catalysts for peroxodisulfate (PDS) activation has attracted considerable attention. A novel composite, polyethylene mulch-sorghum straw biochar (Fe-Mo 0.1 /N-PSC), was synthesized via hydrothermal activation, co-impregnation, and high-temperature pyrolysis to enhance catalytic efficiency and facilitate agricultural solid waste valorization. In the Fe-Mo 0.1 /N-PSC/PDS system, this composite efficiently activated PDS, achieving 91.86 % tetracycline (TC) removal within 3 minutes, with a pseudo-first-order rate constant of 0.1426 min⁻¹ , surpassing comparable catalytic systems. The influences of PDS concentration, catalyst dosage, pH, and temperature on TC degradation were systematically investigated. X-ray photoelectron spectroscopy indicated that the reactive Mo 4 + promoted the cycle of Fe²⁺/Fe³ ⁺, accelerating reaction kinetics. Quenching and electron paramagnetic resonance analyses confirmed the generation of radicals (•OH, SO₄•⁻, O₂•⁻), which actively contributed to TC degradation. Additionally, the persistent free radicals derived from PE during hydrothermal activation further enhanced degradation efficiency. Liquid chromatography-mass spectrometry identified degradation intermediates, elucidating possible pathways and proving the toxicity of intermediates greatly reduced. The system exhibited excellent stability, maintaining over 75 % degradation efficiency after five cycles with minimal metal leaching, offering valuable insights for practical applications. This study highlights Fe-Mo 0.1 /N-PSC as an effective PDS catalyst and a sustainable strategy for agricultural waste reutilization.
研究领域:
环境科学
·
催化材料
·
废水处理
✓ 已验证
DOI
高影响因子
Water
·
2025
·Vol. 17
·期 9
·1309
·
IF 3
Xiaoyan Ma,Rongbin Quan,Wenqing Cao,Weijie Zhang,Su Jiang,Jiao Feng,Jiulong Wang,Stefanos Giannakis
Electrochemical reduction is a promising strategy for the dechlorination of halogenated organic compounds, offering advantages such as enhanced electron transfer efficiency and increased hydrogen atom concentration. It has garnered significant attention for application in mitigating halogenated disinfection by-products (DBPs) in drinking water, owing to its high efficiency and simple operation. In this study, trichloroacetic acid (TCAA), a representative DBP, was selected as the target contaminant. A novel composite cathode comprising a metal–organic framework MIL-53(Fe)@C supported on an Nd magnet (MIL-53(Fe)@C-MAG) and its dechlorination performance for TCAA were systematically investigated. The innovative aspect of this study is the magnetic attachment of the MOF catalyst to the carbonized cathode surface treated through carbonization, which fundamentally differs from conventional solvent-based adhesion methods. Compared to the bare electrode, the MIL-53(Fe)@C-MAG achieved a TCAA removal efficiency exceeding 96.03% within 8 h of contact time. The structural characterization revealed that the α-Fe0crystalline phase serves as the primary active center within the MIL-53(Fe)@C catalyst, facilitating efficient electron transfer and TCAA degradation. The scavenger experiments revealed that TCAA reduction involves a dual pathway: direct electron transfer and atomic hydrogen generation. The modified MIL-53(Fe)@C-MAG electrode exhibited robust electrolytic performance over a broad pH range of 3–7, with TCAA removal efficiency showing a positive correlation with current density within the range of 10–50 mA/cm2. Furthermore, the electrode maintained exceptional stability, retaining more than 90% removal efficiency after five consecutive operational cycles. The versatility of the system was further validated by the rapid and efficient dechlorination of various chlorinated DBPs, demonstrating the broad applicability of the electrode. The innovative magnetic composite electrode demonstrates a significant advancement in electrochemical dechlorination technology, offering a reliable and efficient solution for the purification of drinking water contaminated with diverse halogenated DBPs. These results provide valuable insights into the development of electrolysis for dechlorination in water treatment applications.
研究领域:
环境科学
·
材料科学
·
水处理工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2023
·
IF 7
Guobin Li,Zhenbang Han,Tao Wang,Minghui Zhang,Qiaoqiao Liu,Tong Zhang,Xiaoming Zhao
Fe-doped graphitic carbon nitride (g-C 3 N 4 ) represents an attractive photo-Fenton catalyst for organic contaminants removal, but the practical performances still need to be improved for large-scale application. Herein, we developed a high-efficiency photo-Fenton catalyst by anchoring Fe-g-C 3 N 4 onto an amidoxime-functionalized polyacrylonitrile fiber (AP) substrate through a simple hydrothermal approach. Comprehensive characterizations demonstrate the strong catalyst-support interaction via the axial coordination bonding between -OH groups and Fe 3+ , which could induce electric polarization of Fe-g-C 3 N 4 to promote the H 2 O 2 adsorption and activation. The fibrous support could also accelerate the photoelectrons transfer from g-C 3 N 4 to Fe 3+ by strengthening the d-π conjugated large π bond, as well as alleviate the backflow recombination from Fe 3+ to g-C 3 N 4 through the electron sink effect. These synergistic qualities resulted in superior photo-Fenton performance for organic contaminants removal, which delivered 4.0-fold higher degradation kinetics than that of the Fe doped g-C 3 N 4 powder catalyst and exhibited unexpected high activity at strong basic environment (pH = 12). Our work demonstrates an ingenious and simple way to design exceptional photo-Fenton catalysts for environmental remediation.
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）