Water Supply
·
2022
·Vol. 22
·期 5
·5589-5602
·
IF 1.768
Lu Zhanpeng,Zeng Guilu,Zhou Zhengyuan,Liu Yulong,Wang Peng,Sheng Xianxian,Dong Jiaqi,Idress Ayesha,Sui Qian,Lyu Shuguang
As a kind of refractory chlorinated hydrocarbon, 1,2-dichloroethane (1,2-DCA) has been frequently detected in contaminated groundwater, and it is hard for common technology to degrade it due to its stability. Moreover, the existence of 1,2-DCA can do harm to human organs. Hence, it is urgent to develop an effective technology for the remediation of 1,2-DCA-contaminated groundwater. In this study, a calcium peroxide (CaO 2 ) system activated by Fe(III) was applied to the degradation of 1,2-DCA and 83.3% of 1,2-DCA could be effectively removed within 3 h when the molar ratio of CaO 2 /Fe(III)/1,2-DCA was 30/120/1. The results of probe experiments, electron paramagnetic resonance (EPR) detection, and scavenging tests demonstrated that both HO • and O 2 −• were the key factors for 1,2-DCA degradation. The released amount of Cl − (84.1%) revealed that most of the chlorine in 1,2-DCA could be dechlorinated. GC-MS was applied for the detection of intermediates during 1,2-DCA degradation and the possible degradation pathway was proposed that 1,2-DCA was first reduced to vinyl chloride (VC) and then oxidized to CO 2 and H 2 O. Finally, 73.4% removal of 1,2-DCA could be achieved in actual groundwater when the molar ratio of CaO 2 /Fe(III)/1,2-DCA was 100/400/1, demonstrating that the CaO 2 /Fe(III) system has a remarkable prospect in 1,2-DCA-contaminated groundwater remediation. Efficient degradation of 1,2-DCA in the CaO 2 /Fe(III) system was achieved. HO • and O 2 –• were the key factors for 1,2-DCA removal in the CaO 2 /Fe(III) system. The possible degradation pathway of 1,2-DCA was proposed. The effect of water matrices on 1,2-DCA degradation in the CaO 2 /Fe(III) system was investigated.
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高影响因子
CATALYSIS LETTERS
·
2019
·Vol. 149
·期 7
·1874-1887
·
IF 2.372
Mei Jing,Yuan Guojun,Ma Yusha,Chen Xu,Ren Lili
Nowadays, increasing attention has been focused on tailor-made aerogels through the addition of different components, which have been employed in specific catalytic reactions. In this study, Fe-doped alumina aerogel as a novel heterogeneous catalyst for degradation of Rhodamine B (RhB) was constructed by sol–gel one-step method, which is not only simple, but also can avoid the leaching of active components during degradation of RhB. Besides, the catalyst maintains high activity for the degradation of RhB within a wide range of pH values (2–10). Heat treatment could lead to enhancement of Fe–O–Al bond and significantly inhibit iron leaching. Effects of some parameters, including reaction temperature, dosages of H 2 O 2 , pH values and RhB concentrations on RhB degradation were also investigated. FTIR and ICP analysis shows that the catalyst exhibits low iron leaching, good structural stability and high catalytic efficiency after reuse. The catalytic mechanism and RhB degradation pathway were proposed based on the results of electron paramagnetic resonance (EPR) and the liquid chromatography-mass spectrometry (LCMS). We believe that Fe-doped alumina aerogel can be an efficient and green heterogeneous catalyst for the degradation of organic pollutants. Graphical
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高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 40
·6010-6017
·
IF 3.382
Shuai Fang,Hongan Ma,Zhanke Wang,Zhiqiang Yang,Zheng-hao Cai,Luyao Ding,Xinyuan Miao,Liangchao Chen,XiaoPeng Jia
FeS is the main sulfur-containing compound in natural diamond inclusions. The research on FeS-doped diamond crystals plays an extremely important role in exploring the growth environment of natural diamond and the chemical composition of the earth. In our work, the characteristics of FeS doped diamond crystals were studied by using a China-type large volume cubic high-pressure apparatus with an iron–nickel alloy as a catalyst at 6.0 GPa and 1300–1350 °C. The crystals were characterized by OM, SEM, XPS, FTIR and Raman. Scanning electron microscopy of the crystal shows that the {100} plane of the crystal is rougher than {111}, which is related to the number of dangling bonds on different crystal faces of the crystal. The residue on the surface of the crystal was detected by mapping, and the test result showed that it was a sulfur iron and a sulfur nickel compound. FeS will decompose in the synthesis system, and the decomposition products are Fe and S2.The XPS spectrum of the crystal shows that S was successfully incorporated into the diamond lattice by forming C–S–O and C–S–SO2–C bonds, and the peak intensity was strong. The infrared spectrum shows that the N content in the crystal gradually increases as the doping ratio increases. Raman spectroscopy analysis shows that the S-doped Ib-type diamond single crystal has a high-quality sp3 structure, and the full width at half maximum (FWHM) of the crystal gradually broadens as the doping ratio increases.
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高影响因子
DALTON TRANSACTIONS
·
2017
·Vol. 46
·期 47
·16525-16531
·
IF 4.029
Fu-hua Wei,Ding Chen,Zhao Liang,Shuai-qi Zhao,Yun Luo
Fe-Based metal–organic frameworks (Fe-MOFs) were prepared with trimesic acid and FeSO4·7H2O via a microwave-assisted ball milling approach. The structure and thermal stability of the as-prepared Fe-MOFs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). When used to degrade 20 mg L−1 hexavalent chromium in aqueous solution, the Fe-MOFs were found to completely reduce a 100 mL solution within 120 min under natural light and a 400 mL solution within 90 min under Xe lamp irradiation. Under natural sunlight, 98% of the Cr(VI) was removed from a 40 mL solution after 40 min.
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高影响因子
INDOOR AND BUILT ENVIRONMENT
·
2025
·
IF 2.9
Pengfei Zhang,Wenjian Han,Bo Zhou,Haiqian Zhao
The metal-organic framework MIL-100(Fe) is a novel humidity-regulating material, but it has poor water vapour desorption performance. To address this issue, MIL-100(Fe) was modified using 20% lithium chloride (LiCl), forming stable coordination bonds through ion-dipole interactions. These bonds attract water molecules, enhancing the adsorption capacity and improving the structural stability of the material. After modification, its moisture capacity was increased by 2.42 times, and the desorption amount was increased by 7.22 times, with an overall improvement in moisture adsorption–desorption equilibrium. However, the use of inorganic salts presents a leakage problem in high-humidity environments. To counter this, a 3% ethyl cellulose (EC) coating was applied to the modified MIL-100(Fe). Through surface interactions, this modification improved the material's adsorption performance in non-polar environments, preventing deliquescence in long-term high-humidity conditions. The hydrophobic angle of the modified composite material reached 93°, making the surface hydrophobic. The moisture capacity of the composite material was 1.83 times that of the pure MOF, and the desorption amount was increased by 5.2 times, significantly enhancing the material's environmental humidity regulation performance. Additionally, the material demonstrated good reusability, extending its lifespan, making it suitable for use as an intelligent humidity control material in construction.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yixin Luo,Jingnan Yang,Fu Li,Xiaomei Zhou,Tongyan Yu,Qingxin Guan,Mo Qiu,Wei Li
The hydrogenation of glucose to sorbitol using Raney-Ni is a well-established process in industry, but it faces challenges such as high mannitol content, nickel leaching, and catalyst pyrophoricity. Here, Ni 6 Fe 1 /Al 2 O 3 nanoflower with high sorbitol selectivity and stability was synthesized from Ni x Fe y /Al-LDH precursors, where the distribution of iron in the alloy phase and support can be well-regulated. XANES and FT-EXAFS spectra verified the presence of Fe in the catalyst as NiFe alloy and FeO x . Multiple evidences unveiled that the NiFe alloy phase significantly improving the yield of sorbitol and the iron oxide species can regulate the acidity of the support, thus effectively reducing the byproduct mannitol. Delightfully, the optimal Ni 6 Fe 1 /Al 2 O 3 catalyst achieved a sorbitol yield of 99% and a mannitol yield of 0.45%, showing a significant advantage over Ni/Al 2 O 3 (77% and 1.3%) and Raney-Ni (57% and 1.3%) catalysts. Theoretical calculations indicate that the NiFe alloy surface is more conducive to glucose adsorption and sorbitol desorption, and the intrinsic high activity of NiFe alloy phase is due to the downshift of d-band center, which facilitates H* dissociation from the anti-bonding orbital. This study provides significant insights for designing catalysts with high activity and selectivity in converting lignocellulosic biomass.
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高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yun Gao,Hang Zhang,Jian Peng,Jinsong Wang,Xiaohao Liu,Lingling Zhang,Yao Xiao,Li Li,Yang Liu,Yun Qiao,Jiazhao Wang,Shulei Chou
High-performance, cost-effective cathodes are essential for grid-scale sodium-ion batteries (SIBs). Prussian blue analogs (PBAs) have shown great potential as SIB cathodes, but achieving both high capacity and long lifespan remains challenging. In this study, a series of low-cost ternary PBAs synthesized through structural regulation is presented to simultaneously achieve high capacity, stable cycling performance, and broad temperature adaptability. Among them, CuHCF-3 demonstrates a specific capacity of 132.4 mAh g −1 with 73.3% capacity retention over 1000 cycles. In-depth analyses, using in situ techniques and density functional theory calculations, reveal a highly reversible three-phase transition (monoclinic ↔ cubic ↔ tetragonal) in Na 1.96 Cu 0.45 Mn 0.55 [Fe(CN) 6 ] 0.91 ·□ 0.09 ·2.14H 2 O (CuHCF-3), which is driven by synergistic interactions between Mn and Cu. Mn enhances conductivity, increases the operating voltage, and introduces additional redox centers, while Cu mitigates the Jahn–Teller distortions associated with Mn and buffers volume changes during cycling. This structural synergy results in excellent temperature stability across a wide temperature range (−20 to 55 °C). 18650-type cylindrical cells based on CuHCF-3 with high loading density achieve 73.54% capacity retention over 850 cycles. This study offers valuable insights for designing durable, high-capacity electrode materials for SIB energy storage applications.
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DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yongxiang Yuan,Jianglong Kang,Shengping Jin,Dengdeng Ai,Wenying Zhao,Jiatai Wang,Yulong Kang,Xiaoyi Hou
P2-type layered Mn-based excess metal oxide cathode is considered to be one of the most promising cathode materials for sodium-ion batteries (SIBs) due to the open sodium ion diffusion channels and low diffusion energy barrier. However, the deep charge/discharge process of the P2-type layered oxide cathodes at high potential leads to the displacement and irreversible alterations of the crystal structure, thereby resulting in poor rate capability and deteriorated capacity retention. The charge/discharge curves are smoothed after Fe doping. The specific discharge capacity, rate capability and cycling stability of the samples are significantly improved by Fe-doping. When x = 0.03, the obtained Na 0.6 Mn 1-x Fe x O 2 cathode delivers excellent electrochemical performance. The initial discharge specific capacity of the cathode is 193.14 mAh g −1 at 0.1C, and can remain 91.05 mAh g −1 after 100 cycles. The capacity retention rate is as high as 86.02 % when the current density turn back to 0.1C after cycles at different current densities. The present work may propose a strategy to improve P2-type layered Mn-based cathode materials for sodium-ion batteries by a doping method, which will be of great significance for the commercialization of sodium-ion batteries.
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高影响因子
CRYSTENGCOMM
·
2025
·Vol. 27
·期 5
·678-686
·
IF 2.6
Dongling Xie,Jianan Wang,Bo Huang,Yiyi Yang,Dunmin Lin,Chenggang Xu,Fengyu Xie
Rational design of viable routes to develop affordable and efficient oxygen evolution reaction (OER) catalysts is essential for advancing electrochemical water splitting, yet significant challenges remain, particularly in seawater. Here, we propose a ligand defect engineering strategy to modify the electronic structure of NH2-MIL-88B(Fe) using a monodentate ligand (acetic acid, AcOH), inducing ligand vacancies in NH2-MIL-88B(Fe) for oxygen evolution in an alkaline seawater electrolyte, thereby improving the performance of the electrocatalysts. The resulting defective MOFs (denoted as NH2-MIL-88B(Fe)-x) exhibited exceptionally high catalytic activity for OER, requiring low overpotentials of 313 and 329 mV at a current density of 100 mA cm−2 in 1 M KOH and simulated seawater (1 M KOH + 0.5 M NaCl) solutions, respectively. Experimental analyses revealed that the introduction of AcOH can modulate the d-band center of active sites in NH2-MIL-88B(Fe)-x and play a critical role in alleviating chloride ion (Cl−) corrosion, thereby enhancing catalytic stability in seawater. When directly used as an OER catalyst in an alkaline electrolyte, wind and solar power were harnessed to operate the NH2-MIL-88B(Fe)-x || Pt/C configuration to drive the electrolytic water reaction. Thus, the ligand defect strategy can be employed to design and prepare high-performance OER electrocatalysts, particularly for generating H2 through water electrolysis powered by renewable energy sources.
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高影响因子
Nanoscale
·
2025
·
IF 5.1
Manoj Kumar Panjwani,Yuqi Liu,Shihao Han,Danish Khan,Shaoxia Yang,Feng Xiao,Pan Gao
Dual-atom catalysts (DACs) driven by peroxymonosulfate (PMS) activation have demonstrated significant potential for addressing the inherent scaling relationship limitation of reaction intermediates, but in-depth mechanistic insight into synergistic interactions between dual-metal sites remains elusive. The Fe–Mn DAC has been designed with the largest electronegativity difference among Fe-based metal pairs to enhance electron transfer and synergistic interactions. The Fe–Mn DAC exhibits exceptional catalytic performance for bisphenol A (BPA) degradation, achieving a reaction rate constant (kobs) of 1.36 min−1, and a turnover frequency to PMS concentration ratio of 34.0 L min−1 g−2, which significantly surpasses the performance of reported state-of-the-art DACs, SACs, and nanocatalysts. The log kobs value correlated well with the σ+ value (R2 = 0.80), indicating that the Fe–Mn DAC readily targets pollutants with strong electron-donating abilities. Besides, 1O2 plays a key role in the Fe–Mn DAC/PMS system for BPA degradation. Based on density functional theory calculations, Fe and Mn active sites with a large electronegativity difference effectively enhance the synergistic interactions and decouple the activation and stabilization of reaction intermediates to address the inherent scaling relationship limitation. This study provides a robust framework for the rational design of DACs to enable efficient and sustainable water treatment.
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PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Renjie Ji,Xiaorui Li,Yonghong Liu,Hui Jin,Lixin Wang,Hao Sun,Shuo Liu,Xinlei Wu,Chao Zheng,Runsheng Li,Xiaopeng Li
A superamphiphobic microporous array surface was prepared for the first time by adding diamagnetic MoS₂ particles in the process of magnetic field-assisted jet electrodeposition in this paper. The diamagnetic MoS₂ particles were added to the electrodeposition solution. Then, the edges of MoS₂ provided preferential nucleation and deposition sites, and thus they were codeposited on the substrate surface with Ni²⁺ and Fe²⁺. With a magnetic field, the magnetization effect made the microstructures with the same magnetic pole repel each other and they were connected by the MoS₂ to form micropores. Finally, the superamphiphobic effect was achieved through low surface energy modification. Experiments showed that when the concentration of MoS₂ was 6 g/L and the magnetic field intensity was 50 mT, a Ni-Fe-MoS₂ surface with a longitudinal “olive-shaped” microporous structure could be prepared on the substrate. The contact angles of the deposition layer surface to water and oil were 160.87° and 153.92°. In addition, the surface of the deposition layer had good friction performance. The wear debris generated after friction and wear filled the gaps in the hole structure, which leveled the surface of the deposition layer. Moreover, the wear debris produced rolling friction during friction and wear, reducing the dry friction coefficient of the deposition layer surface to as low as 0.153, and the weight-loss rate after friction and wear was only 0.05 %. This paper provided a method for forming a superamphiphobic microstructure on the surface of the deposition layer under the coupling effect of diamagnetic MoS₂ and a magnetic field, which was of great significance for the efficient and rapid preparation of superamphiphobic surfaces with a low friction coefficient.
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DOI
高影响因子
Thermal Science and Engineering Progress
·
2025
·
IF 5.4
Yuetong Li,Qiuwan Shen,Shian Li
CuGa 2-x Fe x O 4 spinel catalysts were applied for methanol steam reforming (MSR). Results indicated that the increase in Fe 3+ doping altered the crystal structure. SEM and BET results indicate that the catalyst exhibits a particle structure. Fe-doping affects its morphology and surface area. The MSR experimental results demonstrated that CuGa 0.4 Fe 1.6 O 4 exhibited excellent catalytic performance. This is attributed to the change in the original lattice structure caused by Fe doping. Furthermore, the optimal operating conditions for MSR reaction were optimized. After the 40-hour stability test, the methanol conversion rate remained above 90 %, and the hydrogen production reached 6 mmol/min/g cat .
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高影响因子
危险品化学品经营许可证（带存储）