ACS Omega
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2019
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IF 2.584
Jinjuan Xue,Zhengrong Zhu,Yuqing Zong,Chengjuan Huang,Mingxin Wang
This study investigates the degradation of dimethyl phthalate (DMP) with hydrogen peroxide and ferrate (Fe(VI)) under various reaction conditions. The results showed that the optimum conditions for dimethyl phthalate removal from water were as follows: (a) pH 7.0 and (b) the original molar ratio of [Fe(VI)]/[H2O2]/[DMP] equal to 10:2:1. Under the optimum conditions, the degradation rate of DMP can reach 89.7% in 360 min. Furthermore, 2,5-dihydroxybenzaldehyde, isophthalic acid, 2-ethylhexanol, oxalic acid, 2,6-dihydroxybenzoic acid, 2,6-dihydroxybenzaldehyde, 2,5-dihydroxybenzoic acid, and monomethyl phthalate were identified as the degradation intermediates, and degradation pathways were proposed.
研究领域:
环境化学
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水处理
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高级氧化过程
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Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 35
·12037-12047
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IF 6.4
Ruifeng Wu,Haibing Li,Yafei Liu,Aimin Chang,Bo Zhang
It is found that the linearization of the resistance–temperature curve for CaCu3Ti4O12 can be achieved by changing the energy band structure induced by Fe3+, but at the cost of decreasing temperature sensitivity. Here, a novel strategy is proposed to improve the thermal and dielectric properties of CaCu3Ti4O12 ceramics by (La,Fe)-co-doping. This can both linearize the resistance–temperature relationship by adjusting the energy band structure of the grains due to the Fe3+ doping and improve the temperature sensitivity by increasing the grain boundary potential barrier resulting from La3+ doping. The dielectric constant increases upon decreasing the grain boundary potential barrier and increasing the carrier concentration. Therefore, the dielectric constant and temperature sensitivity can be regulated by adjusting the characteristics of grains and grain boundary. This work bridges the relationship between thermal sensitivity and dielectric properties, and opens up a door for the development of a multifunctional coupler CaCu3Ti4O12 device.
研究领域:
材料科学
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电子工程
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Molecular Catalysis
·
2026
·
IF 4.3
Minghao Geng,Jiahao Li,Zhengze Li,Meng Sui,Fashe Li,Hua Wang,Zhiyu Hua
Fe-modulated Cu-ZnO CeO 2 catalysts were synthesized via sol-gel method. • Moderate Fe doping suppressed CuO growth and improved Cu dispersion. • Fe tuned the interface and oxygen defects to balance reducibility. • Fe10-CZCe achieved 14.5% CO 2 conversion with high methanol selectivity. • The promotion by Fe stems from interfacial regulation, not new phases. Copper-based catalysts have been widely applied in methanol synthesis from CO 2 hydrogenation. Yet efficient operation at an industrially relevant level remains challenging. The use of CO 2 as a carbon source is still limited by difficult molecular activation and by imperfect interfacial matching. Here, a series of Fe-doped Cu-ZnO CeO 2 catalysts was prepared by a sol-gel route. The influence of Fe content on phase structure, surface electronic environment, reduction behaviour, CO 2 adsorption characteristics and catalytic performance was examined systematically. Fe incorporation did not change the fundamental phase composition of CuO and CeO 2 . It did, however, strongly affect Cu dispersion, the near-surface defect environment of CeO 2 , and the electronic structure of the interface. Moderate Fe addition suppressed CuO crystallite growth, improved Cu dispersion, and produced a more concentrated reduction profile with a more suitable distribution of CO 2 adsorption strength. Excess Fe enhanced defect-related signals and high-temperature adsorption, but also increased interfacial perturbation, which was unfavourable for the further conversion of intermediates. At 3 MPa and 260 °C, Fe10-CZCe showed the best overall performance, giving a CO 2 conversion of 14.5% together with high methanol selectivity and the highest methanol space-time yield. The beneficial role of Fe is therefore linked to reconstruction of the Cu-ZnO CeO 2 interface, which promotes a more effective balance between CO 2 adsorption, activation and hydrogenation. These findings provide a useful perspective for compositional tuning and interface design in Cu-based catalysts. Download: Download high-res image (231KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Jialu Li,Junhao Lin,Zhongyue Sun,Jiawei Liu,Zhilin Zhang,Huiping Deng
A visible-light-assisted peroxymonosulfate (PMS) activation system based on Fe-doped CeO 2 was developed for the efficient degradation of ofloxacin (OFX) in aqueous environments. Fe incorporation effectively regulated the electronic structure of CeO 2 , leading to enhanced visible-light utilization, promoted charge separation, and accelerated interfacial electron transfer, thereby facilitating PMS activation. The optimized 10% Fe-CeO 2 catalyst exhibited remarkably enhanced catalytic activity, achieving nearly complete OFX degradation within 10 min with an apparent rate constant of 0.3606 min −1 , which was substantially higher than that of pristine CeO 2 and the corresponding control systems. Comprehensive characterizations revealed that Fe incorporation optimized the local electronic environment of CeO 2 , thereby facilitating charge migration and PMS activation. Reactive species quenching experiments combined with electron paramagnetic resonance analyses confirmed that multiple reactive oxygen species, including superoxide radicals (O 2 •- ), sulfate radical (SO 4 •- ), hydroxyl radical ( • OH), and singlet oxygen ( 1 O 2 ), participated synergistically in the degradation process. Density functional theory calculations further revealed that Fe incorporation optimized the electronic distribution of CeO 2 and strengthened the adsorption and electron transfer of PMS and O 2 on the catalyst surface, thereby promoting the generation of oxidative species. This work provides mechanistic insight into Fe-mediated electronic structure modulation for efficient PMS activation and offers a feasible strategy for the rational design of ceria-based photocatalysts for environmental remediation.
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Surfaces and Interfaces
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2026
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IF 6
Qiubai Jiang,Tianle Tan,Hui Deng,Jiang Wan,Long Wang,Min Li,Yang Wang,Guangxu Liu
Solar-driven interfacial evaporation (SDIE) is a low-energy and environmentally friendly technology for clean-water production. However, when applied to complex waters, volatile organic compounds (VOCs) can readily enter the condensate. In this study, a sequential strategy involving carbonization followed by composite fabrication was used to construct a CuO@Fe 2 O 3 @CC-SA (CFCC-SA) bimetallic oxide aerogel evaporator with both mechanical stability and flexibility for efficient water evaporation and VOC degradation. Synergistic interactions between Fe and Cu enhanced both the photothermal conversion efficiency and Fenton-like catalytic activity of the material. Meanwhile, the porous aerogel network provided excellent hydrophilicity and rapid water transport, thereby promoting efficient evaporation. Under 1.0 kW m –2 irradiation, the CFCC-SA evaporator exhibited an evaporation rate of 2.06 kg·m –2 ·h –1 , corresponding to an approximately 20% increase relative to the monometallic CuO@CC-SA evaporator. For phenol, CFCC-SA achieved removal efficiencies of 98.4% in the condensate and 63.8% in the raffinate. Furthermore, CFCC-SA maintained high phenol removal performance over a broad pH range and under highly saline conditions (20 wt% NaCl). Overall, by integrating efficient water transport with synergistic bimetallic catalysis, the CFCC-SA evaporator offers a promising strategy for designing SDIE systems that simultaneously enable high-rate water evaporation and VOC removal. Download: Download high-res image (272KB) Download: Download full-size image
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 16
·118645
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IF 6.3
Yuzhe Xie,Jie Zhang,Yuting Liu,Xing Luo,Zixiang Pei,Baohua Cao,Konrad Świerczek,Yang Zhang,Wanbing Guan
To mitigate interconnect corrosion in seawater-fed solid oxide electrolysis cells (SOECs), Mn 1.5 Co 1.5 O 4 spinel coatings were deposited on Fe-22Cr stainless steel. At 750 °C, the coated interconnects exhibited an area-specific resistance (ASR) of 31.8 mΩ cm 2 after 4835 h of oxidation in air, with a parabolic rate constant of 3.0 × 10 −5 mg 2 cm −4 h −1 . Following exposure to seawater vapor for 500 h, the ASR reached 3.36 mΩ cm 2 , with a predicted value of 9.80 mΩ cm 2 at 5000 h. These findings underscore the coating’s improved oxidation resistance under dual-atmosphere conditions. Furthermore, a three-cells stack demonstrated high stability with a low degradation rate of 1.04 × 10 −5 h −1 at 100 mA cm −2 for 100 h. Post-test analysis confirmed a crack-free structure with negligible additional resistance, indicating that the spinel coating satisfies the engineering requirements for durable, direct seawater electrolysis and provides a scalable pathway for green hydrogen production.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Qiyan Sun,Ruixue Zhang,Wen Zhang,Jinsheng Lin,Dianxing Ju,Yongming Chai,Guang-Rui Xu,Lei Wang
Effective modulation of spin state in spinel cobalt oxides by transition metal Fe doping is applied to enhance the chlorine evolution reaction. • Fe-Co 3 O 4 exhibits superior selectivity and stability for the chlorine evolution reaction compared with pure Co 3 O 4 . • The preferential Cl − adsorption on Fe-Co 3 O 4 was confirmed by open-circuit potential measurements and theoretical calculations. The chlorine evolution reaction (CER) is pivotal for advancing the chlor-alkali industry, which is limited by the sluggish kinetics. Transition metal catalysts offer highly tunable electronic structures, where regulating the spin state of metal centers is crucial but challenging for enhancing CER performance. Herein, Fe-doped spinel oxides (Fe-Co 3 O 4 ) were synthesized via a simple sol-gel method. The strategic incorporation of Fe ions introduces geometric confinement, which modulates octahedral distortion at the surface and thereby regulating the spin state of Co centers, ultimately optimizing CER activity and stability. Combined experimental and theoretical analyses reveal that Fe doping triggers a spin-state transition in Co ions from high-spin towards intermediate-spin or low-spin configurations. The enhanced electronic interaction between Co and Fe 3d orbitals in Fe-Co 3 O 4 leads to superior CER selectivity compared to pure Co 3 O 4 , even under unfavorable conditions such as high pH and lower Cl − concentrations. Furthermore, Fe-Co 3 O 4 nanocubes exhibit excellent durability, maintaining stable performance for over 50 h, which is significantly better than that of Co 3 O 4 . Theoretical calculations confirm that octahedral Co and Fe sites in Fe-Co 3 O 4 serve as the active centers for chloride ion release, in contrast to the tetrahedral Co sites in pristine Co 3 O 4 . The spin state modulation of Co not only facilitates chloride ion adsorption but also optimizes the adsorption energetics, elucidating the fundamental mechanism behind the enhanced CER activity. This work highlights the critical role of spin-state regulation at active sites and proposes a chitosan gel-mediated cross-linking strategy for fabricating high-performance CER catalysts. Fe-Co 3 O 4 nanocubes were successfully synthesized via a sol-gel strategy, in which transition metal Fe doping was effectively used to modulate the spin state of Co 3 O 4 in spinel to improve chlorine evolution reaction performance. Download: Download high-res image (135KB) Download: Download full-size image
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LANGMUIR
·
2026
·
IF 4.4
Jiahui Wang,Jingbiao Ge,Huihui Xue,Yang Yang,Sujuan Zhang,Xiuzhen Zheng,Shifu Chen
Photocatalytic water splitting is an effective way to produce H2 and a key research direction in H2 energy development. In this paper, a Fe/FeP/ZnIn2S4 (Fe/FeP/ZIS) composite was prepared by a self-assembly method, with 2D Fe/FeP nanorods attached to the surface of 3D ZnIn2S4 (ZIS) microflowers. When the mass percentage of Fe/FeP loading was 5%, the Fe/FeP/ZIS heterojunction exhibited the best photocatalytic performance (4.56 mmol·g–1·h–1), much higher than that of Fe/FeP and ZIS. The significantly enhanced activity of Fe/FeP/ZIS was ascribed to the close interface contact formed between Fe/FeP and ZIS, which accelerated the separation and transfer of photogenerated charge carriers (PCCs). This study not only offers a reference for the design of novel non-noble cocatalysts but also promotes the improvement in the utilization efficiency of PCCs.
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PubMed
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ENVIRONMENTAL TECHNOLOGY
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2026
·
IF 2.2
Zhenghang Lai,Yanping Ding,Yu Yang,Lei Cheng,Jingwen Wang,Yong Liu
The Fenton-like application potential of MoS2 has recently attracted widespread interest in advanced oxidation processes. This study utilized natural molybdenite ore as the source of MoS2, and the Fenton-like reactivity of molybdenite was further enhanced by dropping Fe(III) ions on the basal planes of MoS2. EDS elemental analysis and XPS results suggest that Fe species were successfully anchored on the molybdenite surface, which exhibited exceptional efficiency in peracetic acid (PAA) activation. The Fe-molybdenite/PAA system achieved 83.2% degradation of sulfamethazine (SMT) within 30 min, and the reaction efficiency by Fe-molybdenite was 3.3 times higher than that of the unmodified molybdenite. HO• and Fe(V) were identified as the reactive species (RSs) during PAA activation, and SMT was degraded by these RSs. Increasing Fe-molybdenite and PAA dosages enhanced SMT degradation, with optimal performance observed at pH 4. Hydroxylation, nitrification, Smiles rearrangement and radical recombination reactions were involved during SMT degradation. Tetracyclines, dyes and other sulphonamide antibiotics could also be well degraded by Fe-molybdenite/PAA. This study elucidates fundamental design principles for engineering Fenton-like catalysts from natural mineral precursors.
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PubMed
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Regenerative Biomaterials
·
2025
·
IF 8.1
Wang Xueying,Liu Hongyi,Sun Mingjiang,Liu Aihua,Li Yan
Ultrathin strut Fe-based scaffolds have made significant progress in the field of vascular interventional devices, but the issues of slow degradation and insufficient biocompatibility at the cell/material interface remain unresolved. This study prepared a functionalized surface on Fe by Zn ion implantation (Zn/Fe). Zn/Fe preferentially releases the antioxidant element Zn in the early degradation due to Zn–Fe galvanic coupling corrosion. It facilitates the adhesion and proliferation of endothelial cells and mitigates the risk of oxidative stress. The degradation rate of Zn/Fe was about 1.6 times that of Fe after 56 days of implantation in the common carotid artery of rats, with a 36.1% reduction in lumen loss rate, demonstrating favorable in vivo biocompatibility. These findings provide valuable insights for the development of novel functionalized Fe-based scaffold medical devices.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Chao Wang,Qing Zhang,Cong Liu,Haishun Jiang,Wan Zhou,Muhammad Nadeem,Qiaoliang Bao,Yoshio Bando,Ding Yuan,Yuhai Dou
The slow kinetics of the anodic oxygen evolution reaction (OER) impose a major limitation on overall water electrolysis, creating a demand for highly active catalysts. Transition metal selenides (TMSs) offer favorable electrical conductivity, inexpensive constituents, and adjustable electronic configurations; however, their inherent catalytic activity is still insufficient. In this study, nanorod-like Fe/Co co-doped NiSe (Fe,Co-NiSe) was prepared by hydrothermally forming NiSe and subsequently introducing Fe and Co through a simple soaking treatment. The simultaneous incorporation of Fe and Co effectively tunes the electronic structure of NiSe. Raman measurements performed in situ show that introducing Fe/Co favors the generation of NiOOH-type oxyhydroxide species, thereby enhancing OER activity. 18O-labeling differential electrochemical mass spectrometry confirms that Fe,Co-NiSe follows the conventional adsorbate evolution mechanism. Density functional theory (DFT) analysis further indicates that Fe-induced electronic redistribution at Co sites raises the Co d-band position and reduces the Gibbs energy required for the kinetically limiting *O → *OOH conversion. Consequently, under alkaline conditions, Fe,Co-NiSe reaches 10 mA cm-2 at an overpotential of 229 mV and sustains 50 mA cm-2 for 300 h. When employed as the anodic electrode in an anion exchange membrane (AEM) water electrolyzer coupled with Pt/C, this electrolyzer delivers 1 A cm-2 while registering a cell voltage of 1.84 V.
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Cancer Nanotechnology
·
2026
·
IF 5.8
Ren Jinxiao,Li Shiping,Shen Juping
Ferroptosis is an iron-dependent form of regulated cell death driven by excessive lipid peroxidation and reactive oxygen species (ROS) accumulation. Herein, we report a novel metal-coordinated nanoparticle system (OFe-NPs) fabricated via a one-pot self-assembly between orlistat and FeCl 3 ·6 H₂O for ferroptosis-based tumor therapy. The optimized OFe-NPs exhibited uniform nanoscale size and good colloidal stability under physiological conditions. In MCF-7 breast cancer cells, OFe-NPs showed significantly enhanced cytotoxicity compared with free orlistat, which was attributed to glutathione (GSH)-responsive disassembly and intracellular release of Fe ions and orlistat. Mechanistic investigations revealed that OFe-NPs effectively induced ferroptosis, as evidenced by increased lipid peroxidation, intracellular Fe 2+ accumulation, glutathione depletion, malondialdehyde elevation, and marked downregulation of GPX4. In an MCF-7 xenograft mouse model, OFe-NPs treatment significantly suppressed tumor growth, achieving a tumor inhibition rate of 76.76% with no evident systemic toxicity. These findings demonstrate that metal-coordinated orlistat–Fe(III) nanoparticles synergistically amplify ferroptosis via simultaneous iron-mediated oxidative stress and GPX4 suppression, offering a promising strategy for cancer therapy.
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