COLLOIDS AND SURFACES B-BIOINTERFACES
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2026
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IF 5.9
Zhengyi Sun,Weijia Li,Xin Wang,Hongyu Wu,Xiaofei Wang,Yifei Shen,Dong Zhou
A novel ATT/γ-Fe₂O₃ nanoparticle was synthesized via the alkaline co-precipitation method. • Submicro/nanofibrous membranes incorporating ATT/γ-Fe₂O₃ particles can respond to external magnetic field stimuli. • Moderate-strength static magnetic field enhanced bone regeneration and vascular repair. • In vivo studies suggested that the BMP2-Smad-RUNX-2 signaling pathway was involved in the improvement and healing of cranial bone defects in rats. Currently, the development of multifunctional scaffolds that synergistically promote osteogenesis and angiogenesis remains a significant challenge in bone tissue engineering. It is increasingly recognized that scaffolds composed of a single material or possessing a single function are often inadequate, as they fail to mimic the complex biochemical and physical microenvironments. In this study, we successfully fabricated a submicro/nanofibrous membrane using electrospinning technology, which creates a biomimetic extracellular environment through a polycaprolactone (PCL) / gelatin (GEL) matrix. The incorporation of attapulgite (ATT) supplies essential osteogenic ions, while γ-iron oxide (γ-Fe₂O₃) facilitates mesenchymal cell differentiation and imparts magnetic responsiveness. Co-culturing the membranes with human umbilical vein endothelial cells (HUVECs) and bone marrow mesenchymal stem cells (BMSCs) revealed that the membranes possessed strong biocompatibility and promoted osteogenic differentiation and angiogenesis. Both in vivo and in vitro studies suggested the involvement of the BMP2-Smad‑RUNX‑2 signaling axis in the effects of the PG/ATT/γ‑Fe₂O₃ scaffold, which also upregulated osteogenesis‑related gene expression under a magnetic field. This work offers new insights and provides a scientific foundation for advancing the use of functionalized nanomaterials in the field of bone tissue engineering.
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Inorganic Chemistry Frontiers
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2026
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IF 6.2
Shi-Yu Lu,Chuan Li,Longyu Qiu,Yan Zhang,Jiaming He,Minqi Liang,Xin Peng,Jun Zhang,Yin Liu,Juan Liu,Chuan Tan,Menggang Li,Meng Jin
Targeted regulation of electrocatalyst reconstruction during the oxygen evolution reaction (OER) under alkaline conditions proves essential to achieving highly efficient hydrogen production via electrochemical water splitting. Yet this remains a considerable challenge. Herein, we prepare an iron nickel phosphate (Fe-NPO) catalyst, which possesses substantial oxygen vacancies and an asymmetric Fe-O(P)-Ni coordination structure. This structural merit facilitates the effective deep reconstruction of Fe-NPO, which then transforms into the highly active Fe-Vo-P-NiOOH active phase during OER. For the reconstructed Fe-Vo-P-NiOOH, it effectively tunes the d-band center, bringing it notably closer to the Fermi level. This type of electronic modulation not only strengthens the water adsorption capacity but also optimizes the rate-determining step (RDS) in the OER pathway. The anion-exchange membrane water electrolyzer (AEMWE) integrated with the Fe-NPO catalyst as an anode catalyst achieved high industrial current densities of 500, 1000, 1500 and 2000 mA cm-2 at low applied voltages of 1.68, 1.76, 1.84 and 1.92 V, respectively. This work presents a strategy to realize the deep and efficient conversion of OER catalysts into highly active components through defect engineering and asymmetric coordination regulation, while also confirming Fe-NPO’s considerable potential for practical hydrogen production scenarios.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122405
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IF 7.5
Xiangwu Meng,Liangji Xu,Jianjun Li,Xuekai Wang,Junshu Wu
Loofah sponge carbon (LOC) was employed as a three-dimensional scaffold and magnetized through alkaline hydrothermal treatment followed by co-precipitation to obtain magnetic loofah sponge carbon (MLOC). Subsequent lanthanum incorporation produced La₃-MLOC, which integrates a hierarchically porous architecture with magnetic separability for phosphate removal from complex waters. La₃-MLOC delivered a Langmuir capacity of 117.32 mg/g at pH 3 and showed rapid uptake across pH 3–6, achieving > 90% removal within 15–40 min while maintaining good tolerance to common coexisting ions. Kinetic fitting (PSO and Avrami, n ≈ 0.82) suggests a predominantly site-specific chemisorption pathway. Microscopic and spectroscopic analyses support La–OH-mediated hydroxyl displacement/inner-sphere complexation, accompanied by partial LaPO₄ precipitation. The sorbent retained high performance over four adsorption–desorption cycles (removal about 92%; desorption about 77%). When evaluated using real effluent from a coal-mining subsidence outfall, La₃-MLOC enabled low-level phosphate polishing to Class III targets at low dosage and short contact time, with an estimated treatment cost of 0.341 USD/g, indicating its potential for end-of-pipe phosphate control and resource-oriented management.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Yunlong Li,Chunsheng Li,Shuang Liu,Qiang Wang,Zhengyang Tang,Jiawei Qu,Jin Ye,Yong Lu,Jun Wang,Kefen Zhang,Yujie Fu,Jiating Xu
NH 2 -MIL-88B (Fe) (MOF) is a promising photocatalytic material for antitumor therapy because of its distinctive electronic structure. However, inadequate separation of photo-generated electrons and slow reaction rate in low/high-valence iron (Fe) cycles limit their clinical application. In the present study, “electronic storage station” as a ligand-to-metal charge transfer bridge bond was constructed to inhibit recombination of electron/hole under 650 nm laser irradiation. Cupric (Cu) ions and gallic acid (GA) were self-assembled into a MOF (denoted as CGMOF) to create an Fe O(GA) Cu bridge bond. GA, characterized by robust electron delocalization and abundant electron-donating groups, significantly enhances electron transfer efficiency for photodynamic therapy (PDT). CGMOF can respond to endogenous glutathione and release cuprous ions, accelerating the iron ion/ferrous ion cycles for chemodynamic therapy (CDT). The released Fe species can serve as T 2 -weighted magnetic resonance imaging contrast. Extended X-ray absorption fine structure spectra confirmed the presence of GA-containing Fe O Cu bonds in CGMOF. Furthermore, a series of photo-electrochemical tests confirmed that the formation of Fe O(GA) Cu bond prominently elevated the redox capacity and increased the carrier density of CGMOF by 2.74-fold compared to that of MOF. In addition, cinnamaldehyde was grafted onto CGMOF for tumor-responsive hydrogen peroxide self-supply. Concurrently, hyaluronic acid was surface-modified to achieve the targeted delivery of nano-photosensitizers. In summary, this study presents an innovative approach for engineering Fe-based metal–organic frameworks for synergetic PDT/CDT applications.
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DESALINATION
·
2026
·
IF 9.9
Jingbo Su,Aoqi Xing,Junxu Hu,Yun Wu,Jinghui Zhou,Jingyu Xu,Xing Wang
In response to water scarcity and energy crises, solar-driven interfacial evaporation technology offers a highly promising industrial solution for seawater desalination due to its “zero energy consumption” and environmentally friendly characteristics. The aromatic ring structure of lignin exhibits excellent light absorption properties, making it a highly suitable material for interfacial evaporation photothermal applications. This study employs electrospun lignin nanofiber membranes that have undergone high-temperature carbonization, with Fe₃O₄ nanoparticles in situ loaded onto their surfaces to form a photothermal layer. Polyvinylidene fluoride (PVDF) serves as both a binder and hydrophobic modifier, bonding at the interface with delignified wood blocks (DW). Based on this design, the fabricated LCNFs/Fe₃O₄@DW evaporator achieves an evaporation rate of 1.76 kg·m −2 ·h −1 under one standard solar irradiance, with an evaporation efficiency of approximately 88.54%, outperforming most conventional wood-based or carbon-based photothermal evaporators. Long-term cycling tests and simulated seawater evaporation experiments demonstrate the material's excellent salt resistance and purification durability. In summary, this study not only validates the application potential of lignin-based nanofiber composites in solar thermal conversion but also achieves functional integration of “solar desalination, salt resistance and scale prevention, and water purification” through precise Janus surface design. It provides a novel strategy that combines environmental sustainability with practical applicability for industrializing solar-driven interfacial evaporation technology.
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GREEN CHEMISTRY
·
2026
·
IF 9.2
zonghao xu,Zongyu Guan,Yan Song,Xiran Zhao,Yaodong Yuan,Zhipeng Yan,Junhang Tian,Xueyi Sun,Biwei Xiao,Weidong Zhuang
Direct recycling of spent LiFePO₄ (LFP) cathodes is a sustainable and energy-efficient strategy for recovering valuable materials while preserving the intrinsic olivine structure. Herein, we report a LiI-assisted regeneration approach that achieves electronic structure reconstruction and reinforced Fe–O d–p orbital hybridization, enabling simultaneous repair of structural defects and enhancement of Li⁺ transport kinetics. The reductive I⁻ ions promote Fe³⁺→Fe²⁺ conversion and effectively eliminate Fe–Li antisite defects, while Li⁺ replenishment restores the stoichiometry of degraded LFP. Density functional theory (DFT) calculations reveal that LiI triggers a downward shift of the Fe 3d band center and an upward shift of the O 2p band center, narrowing their energy separation and strengthening Fe–O covalency. These electronic modifications reduce Li⁺ migration barriers and reconstruct continuous Li⁺ transport channels, as further validated by ab initio molecular dynamics simulations. In-situ XRD measurements confirm reduced unit-cell volume fluctuations and enhanced FeO₆–PO₄ framework stability, demonstrating improved structural reversibility during cycling. Benefiting from this coupled structural–electronic reconstruction, regenerated LFP delivers 146.9 mAh g⁻¹ at 1 C and retains 97.4% capacity after 500 cycles, outperforming the spent material. This work proposes a green and low-energy direct regeneration route for cathode materials and provides important theoretical guidance for their efficient repair and regeneration.
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INORGANIC CHEMISTRY
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2025
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IF 4.7
Chao Yang,Hao Chen,Yuankai Li,Zhelin Su,Yeshuang Wang,Xufei Liu,Huiling Fan
The low sulfur selectivity of Fe-based H2S-selective catalytic oxidation catalysts is still a problem, especially at a high O2 content. This is alleviated here through anchoring FeOx nanoclusters on UiO-66 via the formation of Fe–O–Zr bonds. The introduced FeOx species exist in the form of FeIII and FeII. Therein the FeIII–O species are the predominant active sites for H2S-oxidation. The formed Fe–O–Zr bonds strengthen the redox cycle of FeIII/FeII through promoting electron transfer from Fe to Zr. The FeII–O species can activate molecular oxygen to oxidize H2S into elemental S, which accelerates the formation rate of atomic S, hindering its further oxidation into SO2. The combination of these factors empowers the catalysts, enabling 100% H2S conversion and 98.2% sulfur yield. The catalyst also has satisfactory stability with the sulfur selectivity only decreasing from 98.2% to 91.3% after the reaction going on 50 h. The decreased sulfur selectivity might be caused by the deterioration of pores and the deposition of elemental S on the surface. The former hinders the diffusion of sulfur oligomers timely from pores to the gas phase, while the latter is suspected to capture electrons to promote its further reaction with molecular oxygen.
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INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Qiang Zhang,Ranxiao Ao,Ruijie Gao,Huaming Yang
Transition metals with 3d unoccupied orbitals have superior catalytic activity, but inherent high spin suppresses their adsorption capability, leading to sluggish polysulfide conversion kinetics for Li–S batteries. Herein, we provide Fe–O–Si bridge bonds to manipulate eg filling and induce a high-to-medium spin transition of Fe3+ sites, which enhances polysulfide adsorption and facilitates sulfur redox reaction kinetics. The resultant cathodes exhibit outstanding performances under high sulfur loading, which can deliver a high battery specific energy of 1061 mA h·g–1 even after 100 cycles in Li–S pouch batteries. This work provides new insights into the kinetic and multi-step conversion mechanism of the sulfur redox reaction process, helping in the understanding and design of spin-dependent catalysts.
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Food Bioscience
·
2025
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IF 5.9
Cheng Yang,Pei-Zhi Dong,Zhou-Ning Jiang,Yanan Li,Yue-Hong Pang
The illegal addition of phosphodiesterase-5 (PDE-5) inhibitors in functional food poses significant food safety risks and health issues, requiring a sensitive and effective enrichment and detection method. Herein, a magnetic COFs (Fe 3 O 4 @TpDBA) was prepared by a layer-by-layer growth strategy. TpDBA was synthesized through the condensation of 1,3,5- Triformylphloroglucinol (Tp) and 4,4′-diamino-(1,1′-biphenyl)-3,3′-dicarboxylic acid (DBA). Fe 3 O 4 @TpDBA was used as an adsorbent for magnetic solid-phase extraction (MSPE) of PDE-5 inhibitors (sildenafil, tadalafil, and vardenafil), which enabled their efficient enrichment within 2 min. The lower binding energy value obtained through molecular docking calculations indicates stronger binding ability. The prepared Fe 3 O 4 @TpDBA exhibited high chemical stability (resistant to acid, alkali and organic reagents) and good reusability (10 adsorption/desorption cycles). Coupled with high-performance liquid chromatography-tandem mass spectrometry, Fe 3 O 4 @TpDBA-MSPE exhibited great potential in PDE-5 inhibitors. The developed method was optimized and validated, exhibiting a wide linear range and low limits of detection. Moreover, it was successfully applied to the determination of three PDE-5 inhibitors in five functional foods.
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Han Lv,Zhicheng Cui,Qi Zhao,Chaofan Zhang,Bin Cui,Dandan Zhou
Both iron-reducing bacteria (IRB) and iron are loaded to anode during the microbial electro-Fenton (MEF) system, which simultaneously achieves the refractory wastewater treatment and iron circulation. Meanwhile, the amounts of iron play a pivotal role in both performance of microbial electrochemical system (MES) and regulation of the microbial community and metabolism. Therefore, additional α-Fe 2 O 3 was adopted in MEF system, and then the regulation mechanism for anodic microorganism was thoroughly revealed in this study. When α-Fe 2 O 3 loading increased to 2 mg/cm 2 , phenol removal rate improved by 3.8 times and the anaerobic biofilm thickness of 1000 μm on the anode surface; following, current density increased by 96.2 % and current resistance reduced by 50.5 %. Metatranscriptomic sequencing indicated that α-Fe 2 O 3 could improve microbial metabolism activity via up-regulating the enzymes associated with tricarboxylic acid cycle (TCA cycle). Meanwhile, Shewanella abundance increased 326-fold, and α-Fe 2 O 3 up-regulated the expression of Type II secretion system and cytochrome c synthesis, promoting extracellular electron transfer (EET) process via direct contact pathway. Overall, this study provided a novel strategy for optimizing the performance of MEF system.
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CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Chengdong Li,Yuxiang Wang
Significant volume shrinkage during the ambient pressure drying is a common defect in the synthesis of silica xerogels, leading to densification, collapse of pore structure, and a decline in mechanical properties. Conventional methods struggle to produce silica xerogels with both low bulk density and high mechanical properties without additional post-treatment. Herein, we introduce a novel approach by ultilizing trace amounts of iron/silicon oxy-hydroxide co-precipitate trace-incorporated [-Fe-O] m -[Si-O-] n colloids as the foundational building blocks for polymethylsilsesquioxane (PMSQ) xerogels. These colloids were synthesized through the condensation of hydrated iron cations with methyltriethoxysilane (MTES) hydrolysates, which also influence the aggregation and sedimentation of MTES sols. The impact of the hydrolysis time of MTES on the chemical compositions, phase structures, microstructures of the iron/silicon oxy-hydroxide co-precipitates, and mechanical properties of PMSQ xerogels were investigated. The optimal hydrolysis time of MTES in the cetyltrimethylammonium bromide/ferric chloride (CTAB/FeCl 3 ) aqueous solution was 5.0 h, endowing MTES sols containing a trace of ∼0.046 mg/mL iron/silicon oxy-hydroxide co-precipitates. This process yielded PMSQ xerogels with a high compression strength of 0.316 MPa and maximum compression strain of 79.3 %. Deviating from this optimal hydrolysis time by 1.0 h might significantly reduce the compression strength of the as-synthesized PMSQ xerogels by 18.0 %-58.5 % and decrease the maximum compression strain by 6.6 %-15.4 %. Notably, the tiny incorporation of the iron phase (∼0.1 mol%) into the Si-O-Si backbone endowed the PMSQ xerogels with a minimal volume shrinkage ratio of 5.5 %, an ultra-low bulk density of 69.8 mg/cm 3 , and the highest specific strength of 4.527 kPa·m 3 /kg recorded among all aerogels and xerogels in the literature. The strategy of forming iron/silicon oxy-hydroxide co-precipitates to strengthen and toughen silica xerogels by modulating the hydrolysis/condensation kinetics of hydrated iron cations and silica sources holds promise for maximizing mechanical properties and minimizing bulk density under industrially relevant conditions.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Beizhao Chen,Meng Zhang,Li Wang,Li Li,Qi Han,Xun Liu,Mengxia Wang,Bei Liu,Yi Jiang,Zhongying Wang
The singlet oxygen ( 1 O 2 )-based nonradical AOP process, realized in carbon materials after nitrogen and metal doping, has drawn much attention in recent years. However, the exclusive generation of 1 O 2 in the specialized two-dimensional (2D) catalytic membranes and the associated contaminant degradation mechanisms remain unclear. Herein, a Fe-doped crystalline carbon nitride (Fe-CCN) material without additional nitrogen doping was developed to preferentially initiate 1 O 2 -based nanoconfined oxidation of organic pollutants in the 2D Fe-CCN membrane/PMS system. Density functional theory calculation revealed that the Fe-O-N configuration formed after Fe doping altered the electronic structure of Fe centers, enhancing PMS adsorption and promoting the thermodynamically favorable generation of the –O* intermediate, leading to fast and highly selective 1 O 2 generation. EPR characterization and ROS quenching experiment also confirmed that the Fe-CCN activated PMS, generating nearly 100 % 1 O 2 . The Fe-CCN membrane/PMS system exhibited excellent resistance to natural organic matter (NOM) interference and dramatically increased Bisphenol A (BPA) degradation kinetics, approximately 590 times faster than in conventional batch systems. Enhanced 1 O 2 exposure concentration within the Fe-CCN membrane nanochannels was supported by EPR data and 1 O 2 exposure simulations. Furthermore, The Fe-CCN membrane/PMS system showed wide pH tolerance, excellent pollutant degradation performance, and high stability. This work underscores the practical significance of 1 O 2 -based oxidation reactions in membrane-confined AOPs for the rapid and efficient removal of organic contaminants from water.
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