CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Haidong Yu,Zhiqiang Hou,Longchao Zhuo,Xijun Liu,Yabin Zhang
Microplastic accumulation in water bodies is posing a serious threat to public health. Their chemical inertness impairs the effectiveness of current micro/nano-material-based remediation strategies. Especially in urban drinking water systems, microplastics constantly released and accumulated together with the complexity of pipeline networks challenges the recyclability and long-term stability of remediation materials and technology. To address this, Cu-single-atom magnetic Janus microparticles (CuMJMs) with flower-like crown morphology are engineered meticulously via a step-by-step strategy involving solvothermal growth and chemical deposition. The resulting CuMJMs feature a distinct Janus architecture composed of BiOI nanosheets and Fe 3 O 4 nanoparticles, thereby delivering synergistic magnetic and photocatalytic functionalities. When subjected to a rotating magnetic field, CuMJMs are able to locomote collectively and recover rapidly in confined microenvironments. The incorporation of atomically dispersed Cu single atom not only enhances the number of active sites, but also promotes the separation and migration of photogenerated charge carriers. Such abilities enable CuMJMs to degrade polyethylene (PE) efficiently, achieving a weight loss rate of 53.7 % beyond previous reports. This performance improvement is ascribed to singlet oxygen generation boosted by the Cu single atoms to facilitate oxidative degradation pathways, as supported by electron paramagnetic resonance and active species trapping test. While used in real water matrices, CuMJMs maintain both catalytic activity and magnetic responsiveness, underscoring their robustness and practical potential. This work establishes a new paradigm to active microplastic remediation, merging atomic-level catalytic precision with collective particle behavior to enable scalable and efficient environmental cleanup.
研究领域:
环境科学
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材料科学
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纳米技术
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催化
·
水处理
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DOI
高影响因子
Materials Horizons
·
2025
·
IF 10.7
Evgeny A. Gorbachev,Yifan Wang,Jingtong Duan,Roy R. Nygaard,Ekaterina Kozlyakova,Lev A. Trusov
In this study, we present a principal methodology for semi quantitative analysis of magnetic phase composition during thermogravimetry under a gradient magnetic field, specifically in cycling mode. This approach is demonstrated using Fe-Si-O xerogels, in which magnetic nanophases such as ε-, γ-, and α-Fe₂O₃ can coexist and transform into each other. We introduce a novel, time-efficient quasi in situ approach to identify and optimize heat treatment conditions for synthesizing ε-Fe₂O₃ as a single phase, a material with significant industrial demand. Our results provide a valuable framework for advancing the controlled synthesis of magnetic compounds.
研究领域:
材料科学
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磁性材料
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纳米材料合成
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热分析
·
固态化学
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DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2026
·
IF 15.5
Yang Cao,Luo Jialiang,Wang Yue,Xue Yiqing,Liu Guigao,Lu Zhehong,Wang Suwei,Jiang Wei
Rational microstructure design and compositional regulation have emerged as effective pathways to enhance electromagnetic wave (EMW) absorption, However, simultaneously achieving strong absorption, broad bandwidth, thin thickness and low filler loading remains challenging. Herein, three-dimensional hierarchical heterostructures comprising amorphous carbon-wrapped magnetite supported on flower-like reduced graphene oxide (Fe₃O₄@C/FRGO) was constructed through spray-drying assembly, spatially confined solvothermal crystallization, and defect-modulated carbonization. By tailoring the reduction degree of FRGO and tuning ferrite composition through thermal treatment, the dielectric-magnetic properties and interfacial interactions are precisely regulated. With merely ≈ 3.26 wt% incorporation of FRGO, the optimized composite exhibits a minimum reflection loss (RL min ) of -66.29 dB at 1.94 mm (20 wt% filler) and a broad effective absorption bandwidth (EAB) of 6.60 GHz (11.30–17.90 GHz) at 2.73 mm (30 wt% filler). This exceptional performance is attributed to the engineered heterointerfaces that facilitate multi-path energy dissipation via magneto–dielectric coupling optimized impedance matching, intensive interfacial polarization from abundant hierarchical architectures and the flower-like structure induced multiple scatterings. This study highlights the pivotal role of interfacial engineering in heterostructured absorbers and offers a design paradigm for high-performance EMW-absorbing materials through coordinated component–structure modulation. Graphical abstract The alternative text for this image may have been generated using AI.
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JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Zhaorui Li,Simeng Gan,Xiaofeng Huang,Fei Wang,Xin Sun,Kai Li,Ping Ning
Preparation of Highly Crystalline Fe₂O₃-Based Catalyst (WCS600) from Copper Slag. • Thermal Reconstruction Tunes Fe–O Coordination and Oxygen Vacancies in WCS600. • Oxygen vacancies promote nitrate adsorption and activation and construct the Fe–OH working interface. • ICCUS-derived H₂ supply can reduce the NH₃ production cost to below 1.15 $ kg -1 . The synergistic treatment of copper slag valorization and nitrate wastewater remediation represents a critical pathway toward the high–value utilization of metallurgical solid waste and nitrogen resource recovery. This study employs a strategy synergistically coupling thermal reconstruction with surface defect engineering to convert the Fe–containing phases in copper smelting slag into an Fe₂O₃–based electrocatalyst, designated as WCS600. At −0.6 V vs. RHE, WCS600 achieves an NH₃ production rate of 7.16 mg h⁻¹ cm⁻² and a FE NH3 of 91.56%. Characterization and DFT calculations reveal that cathodic polarization induces the electrochemical reconstruction of surface oxygen vacancies, dynamically generating an interface enriched with mixed–valence Fe²⁺/Fe³ ⁺ species and hydroxylated Fe–OH. This interface promotes the directional conversion of nitrogen–containing intermediates, thereby enhancing NH₃ selectivity. In a simulated acidic smelting wastewater system, WCS600 exhibits excellent stability and resistance to interference, with Fe leaching remaining below the safety threshold. Further techno–economic analysis indicates that, under specific scenarios coupling low–carbon hydrogen sources, the NH₃ production cost of WCS600 could be reduced to below 1.15 $ kg⁻¹ . This study provides a theoretical foundation and practical guidance for the synergistic resource–oriented treatment of solid waste and nitrate wastewater, as well as for the development of scalable electrochemical ammonia synthesis. Download: Download high-res image (227KB) Download: Download full-size image
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高影响因子
IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 23
·38685-38692
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IF 4.3
Shan Tang,Jingcai Xu,Xinqin Lu,Weijie Chen,Hongwei Chen,Bo Hong,Xinqing Wang
Metal-organic frameworks (MOFs) have potential applications in gas sensing due to their abundant porosity and unique surface properties. In this study, Fe2O3 hexagonal spindles (Hgs) derived from MIL-88B(Fe) were successfully prepared using an oil bath method, followed by calcination treatment at an optimized temperature of
$450~^{\circ }$
C. The high-purity porous Fe2O3 Hgs showed excellent acetone gas-sensing performance in the range of 0.4–50-ppm acetone concentration. The Fe2O3 Hgs-450 obtained the high sensing response (Ra/Rg =23,
$\tau _{\text {res}} =17$
s, and
$\tau _{\text {rec}} =2059$
s), excellent selectivity, and stability over 120 days to 10-ppm acetone at an operating temperature of
$220~^{\circ }$
C. The sensing response value was still 1.88 even at 0.4-ppm acetone and the theoretical detection limit (DL) was calculated to reach 3.59-ppb acetone. These excellent acetone gas-sensing properties were attributed to the uniform porous structure, abundant adsorbed oxygen, and small grain size of Fe2O3 Hgs, making them an excellent candidate for screening diabetic patients through exhaled gas analysis.
研究领域:
材料科学
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医学诊断
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Zihao Wei,Qian Wu,Shiyu Fang,Xiang Zou,Ran Yu,Jiashun Cao,Lianghu Su,Weijing Liu,Song Cheng,Jingyang Luo
Digestate-derived biochar (BC) and an FeCl 3 /KOH-modified biochar (FKBC) were evaluated for ciprofloxacin (CIP) removal from nutrient-rich wastewater. FeCl 3 /KOH modification increased the specific surface area from 76.3 to 176.1 m 2 /g and introduced abundant oxygen-containing functional groups with dispersed Fe O coordination sites. Consequently, FKBC exhibited a Langmuir adsorption capacity of 117.93 mg/g, representing a 91.1% enhancement over pristine BC. Adsorption kinetics of FKBC were well described by the pseudo-second-order model (R 2 ≈ 0.99), with higher rate constants and initial adsorption rates, indicating accelerated chemisorption. FKBC further enabled simultaneous removal of ammonium and phosphate (∼60% at 20–120 mg/L). Adsorption was pH-dependent, favoring acidic conditions. XPS/FTIR analyses combined with density functional theory (DFT) calculations revealed that CIP adsorption is primarily governed by inner-sphere Fe O coordination and carboxylate complexation, with carbonyl anchoring and π-π interactions contributing at higher surface coverage. Stable Fe 2p features before and after adsorption indicate reversible surface coordination without alteration of iron chemical states, supporting low iron-leaching risk. A ranking efficiency product (REP) analysis yielded an overall sustainability score of 85%, highlighting FKBC as an efficient and sustainable adsorbent for antibiotic remediation and resource-oriented digestate valorization.
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ACS Nano
·
2025
·
IF 16
Hanlin Wang,Jiajia An,Wenxi Zhao,Binkai Yu,Ye Li,Jinqiao Hu,Shikang Jiang,Qinfen Gu,Junwu Zhu,He Zhu,Jingwen Sun,Limin Zhou,Shengjie Peng,Yuping Wu,Hui Xia,Mingzhe Chen
Revealing the mechanism of Mn doping in polyanionic NaFePO4 materials advances our fundamental understanding of electrochemical reactions. Herein, we propose the concept of heterotransition metal ligand field clusters (H-TMLFC) as a framework to investigate the structural evolution of transition metal (TM) ligand fields at the microscopic level. The introduced [MnO6] octahedra exhibit a distinctive half-filled frontier orbital configuration, thereby strengthening σ-bonding interactions and modulating the charge distribution between adjacent [FeO6] units. The redistribution of charge density around the edge-sharing oxygen atoms in [FeO6]–[MnO6] pairs enhances Fe–O covalency and mitigates Fe/Na antisite defects. As a result, H-TMLFC-derived NaFe0.95Mn0.05PO4 achieves an exceptional capacity of 148.9 mAh·g–1 (96.7% of the theoretical capacity) and exhibits superior long-term cycling stability. This work introduces a novel approach for designing high-performance sodium-ion batteries through TM doping, offering atomic-scale insights into the optimization of polyanionic cathode materials.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Mingli Yue,Bixian Wang,Jianbo Zhao,Liangzhong Lv,Ying Fu,Fei Ye
Cancer, the world’s second leading killer, has increasing crude incidence rates and faces multiple prevention/control challenges. Curcumin (Cur) has anticancer activity but low bioavailability, restricting its use in cancer therapy. A nanomaterial (Fe₃O₄/PDA@Cur) for targeted curcumin delivery is developed in this work, which has a magnetic Fe 3 O 4 core made by solvothermal synthesis and a polydopamine (PDA) shell made by one-pot synthesis. Results show that drug loading rate reached 40.3 % when the mass ratio of Fe₃O₄/PDA: Cur was 1:3. The hemolysis rate was measured to be 1.24 % in the hemocompatibility test. The complex exhibited good antibacterial efficacy against both Staphylococcus aureus ( S. aureus , MIC 250.0 μg/mL and MBC 500.0 μg/mL), Escherichia coli ( E. coli , MIC 625.0 μg/mL and MBC 1250.0 μg/mL), which was attributed to the properties of the incorporated PDA. The material has good blood compatibility and antibacterial effects, and it effectively prevents secondary infection at the tumor site and red-blood-cell lysis. Notably, at pH 5.0, drug release reached 75.5 % via pH-responsive mechanisms which tumor microenvironment (pH 5.0–6.5), drug release is accelerated in these regions, enabling targeted therapy that minimizes toxicity to normal cells and systemic side effects, thereby enhancing treatment safety. This complex, which possesses both drug delivery and antibacterial properties, holds significant clinical importance for preventing opportunistic infections during tumor treatment.
研究领域:
纳米医学
·
药物递送
·
癌症治疗
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生物医学材料
·
抗菌剂
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 4
·123461
·
IF 7.5
Rongfang Yuan,Junyi Yuan,Caiyun Zhang,Huilun Chen,Beihai Zhou,Waseem Hassan,Ao Li
Residual sulfamethoxazole (SMX) in aquatic environments poses risks to ecosystems and human health. Due to their exceptional mechanical strength and chemical durability, ceramic membranes (CMs) provide a suitable platform for heterogeneous catalytic oxidation. The synthesis of Fe 2 O 3 -CeO 2 @CM for catalyzing ozone oxidation to remove SMX was done in this study using a hydrothermal in-situ growth technique. The findings showed that when the Fe/Ce molar ratio was 1:3, the calcination temperature was 500°C, and the catalyst loading was 8.4 mg/g, the SMX was totally removed in 10 min in the presence of Fe 2 O 3 -CeO 2 @CM. The characterisation results showed that the material comprised FeCe solid solution and Fe 2 O 3 particles, exhibiting multiple valence states (Fe 2+ /Fe 3+ , Ce 3+ /Ce 4+ ). Based on the quenching experiments, ·OH, ·O 2 - , and 1 O 2 radicals were shown to be involved, with ·O 2 - and 1 O 2 playing primary roles. Mechanistically, the Fe 2+ /Fe 3+ and Ce 3+ /Ce 4+ species in the catalyst exhibited favourable redox cycling, promoting oxygen vacancy regeneration and serving as key active sites for catalysing O 3 decomposition. Furthermore, the system demonstrated excellent cycling stability, maintaining SMX removal rates above 95% after five cycles and achieving 94% removal in actual wastewater, effectively mitigating membrane fouling. An effective and reliable technique for eliminating antibiotics from wastewater is presented in this work.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yanzhi Cai,Xue Huang,Laifei Cheng,Yalong Chai,Zixuan Yu,Mingxing Chen,Shaoxiong Ren,Jiaoe Dang
Achieving self-supporting superflexible binder-free composites where all components serve simultaneously as structural backbones and microwave-absorbers is a technical challenge. This study successfully combined several microwave absorbing materials, including Fe 3 O 4 , NiCo-MOF derivatives, and CNTs, into a binder-free self-supporting superflexible Buckypaper in one step through directional pressure filtration. Fe 3 O 4 -CoNi-MOF was in-situ grown on a single CNT to form a magnetic MOF-coated CNT (CNT@MOF), which was then subjected to high-temperature carbonization to obtain a magnetic MOF-derived carbon-coated CNT (CNT@Fe 3 O 4 /CoNi-C). The combination of Fe₃O₄/CoNi-MOF and CNTs simultaneously promotes magnetic loss and dielectric loss, thereby significantly enhancing impedance matching and electromagnetic energy attenuation capabilities. The optimal carbonization temperature for the CNT@Fe 3 O 4 /CoNi-C Buckypaper is 700 ℃, at which the minimum reflection loss (RL min ) is −58.12 dB and the absorption bandwidth is 5.02 GHz. The interweaving of CNTs forms a robust yet superflexible skeleton, while the in-situ growth of Fe₃O₄/CoNi-MOF derivatives on a single CNT enhances the structural stability of the skeleton. The Buckypaper remains intact after repeated 2 mm-radius curling, knotting, 180° bending. Therefore, this study presents new insights into the preparation of self-supporting, superflexible MOF-derived microwave absorption materials.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Xing Wei,Yaling Ye,Wanling Cai,Zuliang Chen
Antibiotics like doxorubicin hydrochloride (DOX) are widely used in medicine, but their environmental residues pose risks to human health and ecosystems. This study optimized the synthesis of C-Fe₃O₄@ZIF-8 composites using response surface methodology (RSM) to enhance DOX release efficiency, thereby mitigating environmental antibiotic contamination. Under optimized conditions (37 °C, pH 5.0), the C-Fe₃O₄@ZIF-8 composite achieved a significant increase in cumulative DOX release, from 40.8% to 61.1%. The pH-responsive release further validated the optimization strategy. Characterization via scanning electron microscopy (SEM) and X-ray diffraction (XRD) revealed a structural transformation from rhombic dodecahedral crystals to more stable spherical particles with enhanced crystallinity. Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed an increase in surface-active sites and oxygen-containing functional groups, contributing to improved drug release efficiency. These findings provide valuable insights into optimizing C-Fe₃O₄@ZIF-8 for drug delivery, advancing environmentally friendly antibiotic management strategies.
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高影响因子
International Journal of Environmental Research
·
2026
·Vol. 20
·期 6
·302
·
IF 4.3
Jinkui Zhong,Runyujie Ma,Caiya Zhu,Lina Yang,Li Liu,Xiaowen Li,Jing Chen,Yaxin Hu,Xuewen Zhu
Phenolic compounds are widespread industrial pollutants that threaten aquatic ecosystems and human health. Herein, carbon nanotube-supported Fe₃O₄-loaded nano-zero-valent iron (CNTs-Fe₃O₄-nZVI) composites were synthesized via liquid-phase reduction and employed as heterogeneous Fenton-like catalysts with H₂O₂ to degrade bisphenol F (BPF) and bisphenol S (BPS) in aqueous solution. The effects of H₂O₂ concentration, catalyst dosage, and initial pH on degradation efficiency were systematically investigated, and reaction conditions were optimized using the Box-Behnken response surface methodology (RSM). Results showed that at 25 °C, pH 3.0, a catalyst dosage of 0.8 g L⁻ 1 , and H₂O₂ concentrations of 10 mmol L⁻ 1 (for BPF) and 15 mmol L⁻ 1 (for BPS), the degradation efficiencies of BPF and BPS reached 98.03% and 94.30%, respectively, in good agreement with the model-predicted values (96.94% and 93.92%). After four reuse cycles, the degradation efficiencies remained above 70%, confirming good stability and reusability. Isotherm data fitted the Freundlich model better than the Langmuir model for both BPF ( R 2 = 0.9484) and BPS ( R 2 = 0.9091), with negative intercepts indicating multilayer adsorption on heterogeneous surfaces. The adsorption affinity for BPF ( K F = 8.25) was nearly double that for BPS ( K F = 4.37), revealing structure-dependent interfacial interactions. Radical quenching and mass spectrometry indicated HO· oxidation and benzene ring cleavage as the primary BPS degradation pathways. The optimized conditions were determined as H₂O₂ 10.74 mmol L⁻ 1 , catalyst 0.733 g L⁻ 1 , and pH 2.836 by RSM. TOC removal reached 64.22% for BPF and 67.97% for BPS, and ecotoxicity assessment confirmed that the degradation intermediates exhibited substantially reduced toxicity, demonstrating effective detoxification.
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高影响因子
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