APPLIED CATALYSIS A-GENERAL
·
2025
·
IF 4.8
Ruxing Zhao,Qingrun Meng,Guanchao Wang,Lin Xu,Weifeng Chu,Junjie Li
Intermolecular dehydration of 2-propanol (IPA) to di-isopropyl ether (DIPE) serves as an important process to produce the valuable chemical, however, developing advanced solid acid catalysts with high DIPE selectivity faces the great challenge of inhibiting the intramolecular dehydration reaction. In this context, we developed a highly selective intermolecular dehydration MFI nanosheet catalyst by synergistically modifying its diffusion and acid properties. We found that the DIPE selectivity over nanosheet ZSM-5 catalysts were obviously higher than that over the conventional ZSM-5 catalyst, benefited from the enhanced diffusion property over nanosheet catalysts that inhibited the further conversion of DIPE. However, the DIPE selectivity were still lower than 70 % over those catalysts attributed to their high acid strength that facilitated the intramolecular dehydration reaction. Thus, various heteroatoms (Fe, Ga, and B) substituted MFI zeolite nanosheet catalysts were prepared and employed in the dehydration reaction, Fe-MFI with a moderate acid strength exhibited the highest DIPE selectivity among those catalysts. Besides, the effects of acid amounts (Si/Fe ratio) and diffusion properties (thickness of b-axis) on the intermolecular dehydration selectivity and activities over nanosheet Fe-MFI catalysts were systematically investigated. An optimal Fe-MFI nanosheet catalyst with the b-axis thickness of ∼20 nm and Si/Fe ratio of ∼40 presented the stable high DIPE selectivity of ∼91 % in 360 h of time on stream, meanwhile the IPA conversions kept almost unchanged.
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高影响因子
DESALINATION
·
2025
·
IF 9.8
Pei Wang,Pu Li,Chencheng Dong,Chao Yang,Lin Lin,Xiao-yan Li
The integration of heterogenous Fenton reaction with membrane filtration has emerged as an effective technology for removing micropollutants from water. In this study, a novel bimetallic Fe Mo oxide (FeMoO)-modified catalytic ceramic membrane (CM) was fabricated, enabling continuous Fenton reaction for micropollutant removal and membrane fouling mitigation. By coating the FeMoO catalyst hybridized with NH 2 -MIL-88B(Fe) (NM88B) on the CM, i.e., FeMoO/NM88B@CM, a catalytic layer ~24 μm in thickness was formed on the membrane to provide abundant active sites for H 2 O 2 activation during the filtration process. FeMoO/NM88B@CM with H 2 O 2 dosing exhibited a remarkable treatment performance, achieving 98.5 % degradation of moxifloxacin (MOX) within 3.1 min of single-pass water filtration, greatly surpassing the 16.8 % removal by FeMoO/NM88B@CM without H 2 O 2 dosing and 16.2 % removal by bare CM with H 2 O 2 dosing. The FeMoO/NM88B@CM/H 2 O 2 system also performed exceptionally well in treating actual secondary wastewater effluent, removing more than 60 % of the residual organics while mitigating the membrane fouling problem. In addition, the catalytic membrane filtration demonstrated its high effectiveness in degrading various micropollutants, in the presence of complex water matrix substances, and during long-term operation. Hydroxyl (‧OH) and superoxide (‧O 2 − ) radicals were identified as the active species generated by the catalytic membrane for organic oxidation and membrane fouling control. It is considered that H 2 O 2 -induced Mo(VI)/Mo(IV) cycle of the immobilized Fe Mo bimetallic catalyst played a crucial role in driving the essential Fe(II)/Fe(III) redox cycle for continuous regeneration of Fe(II) and heterogeneous Fenton oxidation. The research findings provide valuable insights into the fabrication and potent functionality of catalytic ceramic membranes in high-rate removal of micropollutants for water pollution control.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Rongrong Mu,Wenhui Song,Zili Li,Yuting Pan,Jingwei Liu,Fengyu Qu,Huiming Lin
Both sonodynamic therapy (SDT) and nanozymes can be considered specialized forms of catalysis, which are related to the electron structure. In this work, Fe doping was employed to introduce electronic localization and spin polarization toward porous MoO 2 nanospheres to improve the anticancer catalytic efficiency. All the Fe atoms are single-distributed to substitute for some lattice positions of Mo. Compared with MoO 2 @PEG, MoO 2 /Fe@PEG results in a 2.8-fold increase in ROS generation, which is attributed to spin polarization. This phenomenon enhances charge separation, increases conductivity, and promotes O₂ adsorption, thereby significantly improving the ROS production efficiency. Furthermore, MoO 2 /Fe@PEG also has superior mimic-catalase (CAT) activity (318,467 U g −1 ), which is even greater than that of natural catalase (220,834 U g −1 ). Compare with MoO 2 @PEG Fe doping increased the activity by 76.0 times because electron localization can decrease the free energy of the redox reaction. This novel CAT ability can convert endogenous H 2 O 2 into O 2 , alleviating tumor hypoxia and increasing ROS production. Notably, MoO₂/Fe@PEG also mimics GSH oxidase and NADPH oxidase (NOX) activities to consume GSH and restrain its regeneration at the same time, contributing to oxidative stress. The synergistic effects of SDT and multiple enzymes not only exhibit potent tumor inhibition but also elicit a robust immune response to prevent metastasis and recurrence.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yimin Chen,Jiayi Niu,Chaozhong Guo,Chenyang Shu,Jianglin Chen,Jinyan Wu,Rong Jin,Yao Liu,Hao Wang,Yujun Si,Xiaoyu Dong
The development of highly active and durable carbon-based electrocatalysts for the oxygen reduction reaction (ORR) is of critical importance. In this study, a heteroatom-doped carbon catalyst (FeSn-NFC) was synthesized through the chelation of Fe 3+ and dopamine hydrochloride, followed by Sn/F co-doping and carbonization. The resulting FeSn-NFC catalyst exhibits an ultrahigh specific surface area of 2387.9 m 2 g −1 , with micropores accounting for 79 % of its structure. The incorporation of Sn enhances the pyridinic nitrogen content and facilitates the elimination of reactive oxygen species (ROS). Electrochemical evaluations reveal exceptional ORR performance, with a half-wave potential ( E 1/2 ) of 0.857 V and a minimal degradation (Δ E 1/2 = 11 mV) after accelerated aging tests. When integrated into a zinc-air battery, the FeSn-NFC catalyst delivers a peak power density of 217 mW cm −2 and an energy density of 880 Wh kg −1 (Zn), maintaining 93.2 % of its initial energy density after ∼115 h of continuous operation. This work offers a novel strategy for fabricating efficient, stable, and cost-effective ORR electrocatalysts, advancing the field of energy conversion technologies.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yiming Wang,Jin Chen,Jianye Shi,Jing Zhang,Yuzhao Ma,Xiaofeng Yang,Yanjun Li
The integration of microscopic material designs and macroscopic structural layouts offers unlimited potential for developing advanced electromagnetic wave (EMW) absorbers. Herein, a pyrolysis-based strategy is reported for the hybridization of Ti 3 C 2 T x MXene nanosheets to achieve relaxation processes and high-density magnetic coupling at the nanoscale. The stratified structure of Ti 3 C 2 T x /Fe-MOF considerably amplifies the active contact region with electromagnetic radiation, thereby inducing numerous reflection/scattering phenomena. Through pyrolytic transformation, derived nanoparticles including Fe, C, Fe 3 O 4 , and TiO 2 establish continuous metal–carbon and carbon-oxide interfaces below 50 nm. Consequently, the heterogeneous interfaces formed between these components establish a harmonious electromagnetic coupling network, where interfacial polarization from numerous heterojunctions promotes charge accumulation and relaxation processes, converting electromagnetic energy into thermal energy. Remarkably, findings indicate that this composite material demonstrates a minimum reflection loss (RL min ) of −47.05 dB when the thickness reaches 1.8 mm. Additionally, this investigation broadens the spectrum of design strategies for premium microwave absorption materials through systematic interface engineering and thermally-controlled phase conversion.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 8
·1-10
·
IF 5.3
Yang Juanli,Chen Xingnu,Ji Yi,Tan Mengyuan,Hu Qin,Gao Lu,Zheng Kaiyi,Yang Zhen-quan,Li Xin,Xu Xuechao
Staphylococcus aureus , a prevalent foodborne pathogenic bacterium, poses a significant threat to human health. Herein, a dual-mode sensing method is proposed for detecting S. aureus in food using aptamer-modified Fe/Zr metal organic framework (Apt@Fe/Zr MOF). The Apt@Fe/Zr MOF was prepared through self-assembly of Fe/Zr MOF followed by surface modification with an aptamer. It exhibits peroxidase-like activity, catalyzing the 3,3′,5,5′-tetramethylbenzidine (TMB) chromogenic reaction. Meanwhile, Apt@Fe/Zr MOF demonstrates fluorescent characteristics, emitting a fluorescence signal at 428 nm upon excitation with light at 350 nm. Based on this feature, dual-mode sensing of S. aureus with comparable specificity and excellent anti-interference was achieved through the integration of colorimetry and fluorometry. The limits of detection (LOD) for both colorimetric and fluorometric analyses were 3.25 × 10 1 and 1.47 × 10 1 CFU mL −1 , respectively. Actual detection of food samples indicates that this method exhibits excellent reliability and accuracy, with recoveries ranging from 91.12 to 107.55% (colorimetry) and 94.40 to 109.47% (fluorometry). The results are highly consistent with those obtained from traditional culture-based methods. Therefore, it is evident that the dual-mode detection of S. aureus using Apt@Fe/Zr MOF offers a rapid and reliable method for ensuring food safety. Graphical
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Advanced Science
·
2025
·
IF 14.1
Kai Liu,Haibing Zhu,Feng Shi,Juan Li,Xiang Li,Zijun Lai,Haibo Li,Hao Zeng,Zhanjun Yang,Huan Pang
Iron-based metal-organic framework (MOF) nanozymes have garnered considerable attention owing to a large specific surface area, adjustable porosity, large Fe-O clusters, and unsaturated Fe sites. However, the sluggish charge-transfer rate and restricted active sites of the nanozymes lead to poor enzyme-like activity and further impede their biomimetic catalysis. Herein, a three-channel electron-engineered Fe-88A@CeO 2 /carbon dots (Fe-88A@CeO 2 /CDs) nanozyme is proposed for efficient biomimetic catalysis. Fe-88A@CeO 2 /CDs nanozyme is prepared by incorporation of CeO 2 and CDs into the porosity of Fe-88A. Specifically, the original Fe (II)/Fe (III) and the introduced Ce (III)/Ce (IV) redox couples of the nanozyme constitute a dual electron transfer channel. Furthermore, the presence of CDs produces another electron transfer channel. The three-channel electron engineering strategy for nanozymes can accelerate the electron transfer process accompanied with more active sites, thereby greatly enhancing the oxidase-like activity of Fe-88A@CeO 2 /CDs for biomimetic catalysis. The nanozyme can efficiently convert oxygen to · O 2 − ${\mathrm{O}}_2^ - $ , oxidizing colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue ox-TMB, and meanwhile the ox-TMB effectively quenches the fluorescence of CDs. As proof of concept, the nanozyme is utilized to construct a colorimetric-fluorescence bimodal immunosensor for monitoring Staphylococcal enterotoxin B with excellent performance. This work provides promising insight into designing excellent nanozymes for effective biomimetic catalysis in various fields.
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Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 4
·1-12
·
IF 21.8
Wang Lijuan,Shi Yaqin,Wang Yuan,Jia Chunijang,Hou Jie,Su Yizhen,Xu Ben Bin,Liao Zhijian,Zhu Linhua
Synergistic effect between M-N X sites and M X O Y particles in hierarchical porous M–N-C catalysts holds great promises in boosting oxygen reduction reaction (ORR). In this work, 1,4-dicyanobenzene was utilized as a molecular template to prepare the hierarchical porous Fe–N-C catalysts with size-tunable Fe 3 O 4 particles for enhanced ORR in Zn-air battery. The as-prepared Fe 3 O 4 #Fe–N/C DB0.1 owned a half-potential of 0.90 V vs RHE, exceeding that of commercial 20%Pt/C (E 1/2 = 0.82 V vs RHE), showing a maximum power density of 321 mW cm −2 in a homemade Zn-air battery. Density functional theory (DFT) calculations indicate that the electronic interaction between Fe 3 O 4 and Fe-N 4 sites enhances the adsorption energy of *OOH, effectively optimizing the energy barrier for *O formation, significantly reducing the limiting energy barrier. Such superior ORR activity in Fe 3 O 4 #Fe–N/C originated from the optimized hierarchical pores and synergistic effect between Fe-N X sites and Fe 3 O 4 particles. This work provides a new and facile template strategy for engineering hierarchical porous carbon-based materials to achieve highly efficient catalytic reactions.
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高影响因子
Small
·
2025
·
IF 12.1
Jinyuan Zhang,Haifeng Liu,Jiajun Tian,Endong Hu,Xiujuan Gao,Haitao Hu,Zhengyou He,Kangli Wang,Kai Jiang,Hongwei Tao
Iron oxide (Fe 3 O 4 ) has attracted significant attention as a promising anode material for sodium-ion batteries (SIBs) due to its natural abundance, environmental benignity, and high theoretical capacity of 926 mA h g −1 . Nevertheless, its practical application is limited by intrinsic drawbacks, including low electrical conductivity, sluggish Na⁺ diffusion kinetics, and severe volume variation during cycling, leading to rapid capacity fading and poor rate capability. To address these issues, a novel Fe 3 O 4 /Fe@N-doped carbon (Fe 3 O 4 /Fe@CN) nanostructure is rationally designed, which integrates Fe 3 O 4 /Fe homogeneous heterojunctions with a uniform nitrogen-doped carbon shell. The built-in electric field at the Fe-Fe 3 O 4 interface promotes charge redistribution and accelerates electron/ion transport, while the N-doped carbon shell enhances electrical conductivity and buffers mechanical stress during sodiation/desodiation processes. Benefiting from this synergistic structure, the Fe 3 O 4 /Fe@CN anode delivers a high reversible capacity of 336.9 mA h g −1 at 0.1 A g −1 , excellent rate capability with 244.7 mA h g −1 at 2 A g −1 , and remarkable cycling stability, retaining 76.4% capacity after 500 cycles. Furthermore, a full cell assembled with a Na 3 V 2 (PO 4 ) 3 cathode exhibits a high energy density of 112.67 Wh·kg −1 at 51.42 W·kg −1 and outstanding cycling performance. This study offers a versatile strategy to unlock the potential of Fe 3 O 4 for high-performance SIB anodes through heterojunction and interfacial engineering.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 33
·2316654
·
IF 18.5
Feng Xu,Ming Chen,Yaoxuan Cui,Libin Qian,Jin Wang,Zhao Han,Yanli Lu,Di Wang
The electronic nose aims to emulate the olfactory capabilities of osmatic animals, utilizing olfactory sensing array with different sensing characteristics to perceive odors. However, the separate precursors and preparation methods of sensing materials pose challenges in the fabrication of an olfactory sensing array. In this work, the customization of the surface crystal phase of Sr─Fe─O materials (SFO) is demonstrated through the control of annealing temperature, enabling the simple fabrication of an olfactory sensing array using a single precursor. Significantly, the SFO materials exhibit diverse proportions of surface crystal phases, showcasing varied selective characteristics toward volatile organic compounds (VOCs). The materials also demonstrate remarkable responsiveness, linearity, and response/recovery times. Furthermore, this study unraveles the intricate gas-sensor mechanism through first principle calculations, revealing that Fe spin-down d band center of Sr 3 Fe 2 O 7 , located near the Fermi level, significantly enhances the binding strength of intermediates, leading to a higher response specifically to certain VOCs. Integrating these materials into a unified device, the sensor array quantitatively and discriminatively detected different VOCs. The results indicate that SFO materials hold tremendous potential as a promising and easily manufacturable olfactory material system.
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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.
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高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·10455
·
IF 15.7
Jin Sijia,Tan Wenxian,Huang Yilin,Wang Yi,He Zhiqiao,Zhang Haiyan,Song Shuang,Cai Yaqi,Zeng Tao
Fe-N 5 single-atom catalysts (SACs) hold great promise for water decontamination, however, the fundamental relationship between their high coordination shell environment and catalytic performance in Fenton-like reactions remains poorly understood. Here, we precisely regulate the high coordination shell defects of a model SAC with well-defined axial Fe-N 5 configurations to elucidate the impact of remote interactions on peroxymonosulfate (PMS) activation. Experimental and theoretical studies confirm that remote modulation of Fe-N 5 sites through high coordination shell defects profoundly enhance Fenton-like catalytic activity, enabling FeN 5 -SD 2 to achieve a turnover frequency (TOF) value of 0.338 min⁻ 1 , surpassing state-of-the-art SACs. Our findings reveal a critical volcano-type correlation between defect content and catalytic efficiency, where coordinated modulation of Fe d -band center positioning and PMS adsorption energetics governs reaction dynamics. Only the FeN 5 -SD 2 configuration with an optimal level of defects density and moderate adsorption energy enables sufficient O-O bond elongation in PMS to lower the energy barrier for selective singlet oxygen ( 1 O 2 ) evolution. This study unveils the mechanistic role of higher coordination shell defects in regulating Fe-N 5 active sites and introduces a well-defined model to investigate the structure–property correlations of higher coordination shells in SACs for Fenton-like reactions.
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