Desalination and Water Treatment
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2026
·
IF 3.4
Jin Guo,Xueling Yi,Siqi Liu,Jiangwei Ren,Jiawei Wang,Hui Mao
Chlorophenolic contaminants represented by 2,4-dichlorophenol (2,4-DCP) are ubiquitous persistent and toxic organic pollutants in aqueous environments, posing severe threats to ecological safety and human health. Bimetallic zero-valent iron systems have emerged as promising candidates for the remediation of chlorinated wastewater; nevertheless, their practical application is greatly hindered by inevitable nanoparticle aggregation, poor dispersion, and insufficient exposure of active sites. To overcome these limitations, tannic acid (TA) with abundant phenolic hydroxyl groups was rationally grafted onto three-dimensional porous polyurethane foam (PU) to construct a novel composite support. Benefiting from the strong metal chelation of TA, Fe/Pd bimetallic nanoparticles were uniformly dispersed and firmly immobilized on the TA-PU skeleton, successfully fabricating the stable TA-PU-Fe/Pd catalytic composite. The catalytic performance toward 2,4-DCP degradation was systematically evaluated. Compared with conventional carriers such as activated carbon, zeolite and Al 2 O 3 , the as-prepared TA-PU-Fe/Pd exhibited remarkably enhanced removal activity, achieving a 2,4-DCP removal efficiency of 99.7% at an initial concentration of 20 mg/L. Moreover, the composite possessed outstanding cyclic reusability, retaining a high removal rate of 98.7% even after ten reaction cycles. Satisfactory treatment performance was also realized at a low pollutant level of 2 mg/L, with the removal efficiency reaching 93.0%, demonstrating great application potential for the remediation of actual chlorophenol-contaminated water.
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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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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Huiying Lei,Xuechang Ren,Ning Fu,Gongrong Chen,Yajun Wei,Zhongshan Li,Hongjin Chen,Zerui Lu
To address the low Fe 3+ /Fe 2+ redox cycling efficiency of Fe-based catalysts during peroxymonosulfate (PMS) activation, this study successfully constructed a MIL-101(Fe)/WS 2 composite catalytic material. The results show that the MW 1:1 composite exhibits excellent performance toward PMS activation. By leveraging the cooperative effect of dual-metal cycling between Fe 3+ /Fe 2+ and W 4+ /W 6+ , as well as unsaturated sulfur vacancies, it achieves 97% phenol degradation within 60 min, with a reaction constant of 0.1038 min −1 , which is approximately 110 times that of single MIL-101(Fe) and WS 2 . The effects of key operating parameters such as catalyst dosage, PMS concentration, pH value and coexisting anions on phenol degradation efficiency were systematically evaluated. Through in-depth radical quenching experiments and electron spin resonance (ESR) spectroscopy analysis, it was clearly identified that sulfate radical ( SO 4 ∙ − ) and singlet oxygen ( 1 O 2 ) were the main active oxide species driving the degradation reaction. Furthermore, this study further elucidated the degradation means of phenol, proclaimed the reaction mechanisation, and evaluated the ecological toxicity of phenol and its intermediate products using the ECOSAR model. This work provides new insights for constructing efficient iron-based catalysts to activate PMS and promoting its application in the control of refractory organic pollutants.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2026
·
IF 7.9
Fan Pan,Yang Xu,Huan Liu,Yuming Cheng,Jianjun Zhou,Kerun Yang,Yang Zhao,Hongkun Ma,Furong Zhang,Shengkai Cao
Building upon a diagnostic assessment of nitrogen and phosphorus pollution in the Jingzhou Moat, this work developed a novel Fe-Mn oxide composite for the targeted removal of nitrate. An assessment of the water quality revealed a typical pattern of low phosphorus and high nitrogen pollution, with nitrate being the predominant contaminant. A novel Fe-Mn oxide modified activated carbon (FeMnAC) composite with a well-anchored MnFe 2 O 4 spinel structure was synthesized using a controlled activation, impregnation, and calcination procedure. The composite has an increased point of zero charge (pH 9.6), allowing for excellent nitrate adsorption throughout a wide pH range (2∼10). The adsorption process follows the Langmuir monolayer chemisorption model, with a maximum adsorption capacity of 23.19 mg·g −1 . FeMnAC demonstrated exceptional selectivity in the presence of competing anions like PO 4 3– while achieving highly efficient nitrate removal in real moat water samples in 120 min. After four regeneration cycles using NaCl, the adsorbent showed good reusability, retaining more than 50% of its initial capacity. This work offers a transferable methodological framework for nitrogen pollution control in similar heritage urban water systems by combining pollution diagnosis, targeted material design, and practical validation.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yaopeng Pu,Yuyu Wang,Fei Pan,Yulong Ma,Feng Lin,Wenxin Ji,Yuanyuan Li,Yonggang Sun
The escalating severity of global water scarcity and pollution necessitates the development of efficient and sustainable treatment technologies. Solar-driven interfacial evaporation presents an environmentally friendly, low-energy solution for both seawater desalination and wastewater treatment. In this study, we introduce a multifunctional integrated spherical evaporator composed of lignin-wrapped ZnFe 2 O 4 /chitosan‑carbon aerogel spheres (ZFO/CLCA), employing renewable chitosan as a three-dimensional flexible framework. By integrating ZnFe 2 O 4 , a visible-light-active semiconductor, with sodium lignosulfonate, known for its excellent photothermal conversion capabilities, we constructed a three-component organic hybrid featuring an in-situ formed hierarchical porous structure through a one-step carbonization process. The resulting ZFO/CLCA material demonstrates a high density of interconnected multiscale pores, a substantial specific surface area, and broad-spectrum absorption (93.48% across 250–2500 nm). Under simulated solar irradiation (1 kW m −2 ), this material exhibits an evaporation rate of 2.33 kg m −2 h −1 and a solar-to-steam conversion efficiency of 94.54%. The distinctive through-hole structure effectively prevents surface salt accumulation in high-salinity environments (3.5–20 wt% NaCl) via concentration-gradient-driven ion reverse diffusion, maintaining excellent long-term stability over 12 h of continuous operation. Importantly, during photothermal evaporation, the material concurrently catalyzes the degradation of organic pollutants, achieving an 87.10% degradation rate of tetracycline (100 mg L −1 ). In the context of real industrial wastewater treatment containing high salt concentrations and antibiotics, the evaporator produces clean effluent that complies with discharge standards. This study highlights a multifunctional spherical carbon aerogel evaporator that integrates efficient photothermal evaporation, salt resistance, and catalytic degradation, thereby, establishing a promising material platform for integrated solar-driven water treatment systems with both scientific significance and practical application potential.
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高影响因子
DALTON TRANSACTIONS
·
2026
·Vol. 55
·期 20
·7979-7988
·
IF 3.3
Zhidan Deng,Xincheng Xu,Junhong Gao,Chunzhong Liang,Yanyu Yang,Jinshun Lu,Hongyu Chen,Hao Yang
Developing non-noble metal catalysts with both high activity and stability for the oxygen reduction reaction (ORR) remains a major challenge. Herein, we report a phosphorus-induced electronic coupling strategy to construct a dual-active-site catalyst composed of Fe single atoms and Fe2O3 nanoparticles anchored on a hierarchically porous carbon matrix derived from sugarcane bagasse biochar (Fe–P–C–Fe2O3/SBB). Phosphorus doping modulates the local coordination environment and facilitates the formation of Fe–P–O bonds, which bridge Fe single atoms and Fe2O3 nanoparticles, enabling interfacial charge redistribution. This electronic coupling optimizes the Fe d-band center, balances the adsorption strength of oxygen intermediates, and promotes a four-electron ORR pathway. As a result, the Fe–P–C–Fe2O3/SBB catalyst delivers a half-wave potential of 0.80 V (vs. RHE) and a Tafel slope of 75.6 mV dec−1, rivaling commercial Pt/C. Notably, the achieved ORR performance is comparable to or surpasses that of many recently reported non-noble metal catalysts, highlighting its strong potential for practical applications in fuel cells and metal–air batteries. Moreover, the catalyst exhibits remarkable durability and methanol tolerance. This work not only provides an atomically and electronically coupled Fe-based catalytic system but also offers a general strategy for designing sustainable biomass-derived dual-active-site catalysts through heteroatom-induced electronic coupling.
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高影响因子
Small
·
2026
·
IF 11.8
Hang Zhang,Yinuo Wu,Zhen Zhang,Ying Hou,Peizhi Liu,Ting Liao,Bingshe Xu,Yanhui Song,Haixia Zhang,Junjie Guo,Ziqi Sun
M-N-C single-atom catalysts have been demonstrated to be a promising class of non-noble-metal based catalysts, but their activity is largely constrained by the symmetrical electronic density distribution of the M-N 4 moieties. Herein, a ZIF-8 derived Fe/Fe dual-center catalyst (FeN 4 /FeO 5 @NC) is constructed by introducing a O-FeO 4 configuration adjacent to the Fe-N 4 sites to form asymmetric dumbbell-shaped FeN 4 -O-FeO 4 active sites, resulting in improved intrinsic activity of Fe─N─C catalyst. The dumbbell FeN 4 -O-FeO 4 dual-center catalyst features an electron transfer pathway of “FeN 4 → bridged O → FeO 4 ”, which breaks the symmetry of the electronic density distribution of the Fe moiety and regulates the position of the d-band center, increasing the electron transfer efficiency, reducing the desorption energy barrier of the rate-determining step, and enhancing the activation ability of O 2 molecules. The obtained FeN 4 -O-FeO 4 dual-center catalyst exhibits excellent ORR performance in a pH-universal range. The liquid-state Zn-air battery (ZAB) with this FeN 4 -O-FeO 4 dual-center catalyst delivers an outstanding open circuit voltage of 1.502 V and a peak power density of 246 mW cm −2 , superior to the Pt/C-cathode ZAB. This work represents an exploration of ways to improve the ORR performance of Fe─N─C catalysts and provides a paradigm for rationally designing low-cost, highly catalytic, and stable non-noble metal catalysts.
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PubMed
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Lihua Fan,Yuhan Niu,Yanru Zhang,Di Wu,Yongning Wu,Guoliang Li
The escalating challenge of bacterial resistance necessitates the development of novel antibacterial agents, positioning the synthesis of nanomaterials as a pivotal strategy for controlling pathogenic bacteria in the food sector. In this study, a novel H₂O₂ self-supplying nanocomposite was developed, comprising Fe/Mn nanoparticles functionalized with cuprous oxide (CuO₂), denoted as Fe/Mn@CuO₂. This composite exhibit tandem peroxidase (POD)-mimetic and glutathione (GSH)-depleting activities, enabling the on-demand generation of hydroxyl radicals via self-produced H₂O₂ and O₂ under acidic conditions (pH 5.5). The synergistic integration of H₂O₂ self-generation, POD-like catalysis, and GSH consumption significantly enhanced reactive oxygen species (ROS) production, leading to efficient eradication of E. coli (99.4%) and Staphylococcus aureus (99.1%) and remarkably antibiofilm efficacy. This multi-mechanistic action induced pronounced morphological alterations and severe membrane disruption in both bacterial strains. Furthermore, Fe/Mn@CuO₂ demonstrated the ability to denature DNA/RNA, disrupt energy metabolism, and achieve potent bacterial inactivation without detectable cytotoxic side effects. This work marked a substantial advancement in overcoming the drawbacks of conventional bactericidal strategy by combining self-sustaining H₂O₂ supply, POD-like activity, and GSH depletion, thereby presenting a highly promising antibacterial platform. Download: Download high-res image (304KB) Download: Download full-size image
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高影响因子
Nanomaterials
·
2026
·Vol. 16
·期 17
·1055
·
IF 4.8
Hang Yu,Wenjin Song,Runxin Huang,Jiale Liu,Yanshuo Du,Di Lu,Xianxian Shi,Yufang Chen
Lithium-oxygen (Li-O2) batteries are a compelling next-generation energy storage candidate owing to their ultrahigh theoretical specific energy, but their practical deployment is critically limited by sluggish cathodic oxygen reduction/evolution kinetics, severe polarization, and poor cyclability. Here, we design a composite catalyst consisting of ultrasmall iron clusters uniformly anchored on a three-dimensional nitrogen-doped carbon aerogel (Fe@NC). The material is synthesized via bidirectional freeze-drying followed by high-temperature reduction carbonization using chitosan, cellulose nanocrystals, and zinc acetate; sublimation of zinc during pyrolysis effectively suppresses iron aggregation, yielding highly dispersed Fe0 clusters of ~10 nm while preserving the aerogel’s hierarchical porous architecture rich in pyridinic and pyrrolic N species. Electrochemical tests show that Fe@NC delivers a deep-discharge specific capacity of 18,000 mAh/g, substantially outperforming pristine carbon aerogel and commercial Ketjen black, and maintains stable cycling over 280 cycles at 500 mAh/g. Microscopic and spectroscopic analyses confirm that Fe@NC promotes uniform, fine-particle Li2O2deposition without pore blockage and enables its complete reversible decomposition upon charging, effectively mitigating electrode passivation. This work demonstrates that the synergistic combination of carbon aerogel mass-transport benefits and iron cluster catalytic activity provides a viable, scalable route to high-performance Li-O2battery cathodes.
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产品关联
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124778
·
IF 7.5
Nanke Ma,Huiling Peng,Anqi Wei,Yuan Jin,Guangli Li
The extensive use of ciprofloxacin (CIP) has raised growing concerns regarding environmental pollution, food safety, and public health, thereby driving an urgent demand for rapid, sensitive and cost-effective detection methods. Herein, an electrochemical sensing platform is constructed by integrating MIL-101(Fe) with MWCNTs-COOH, which synergistically couples the effective analyte preconcentration and catalytic Fe–O active sites of MIL-101(Fe) with the exceptional conductivity and large surface area of MWCNTs-COOH. Notably, the reversible Fe 2+ /Fe 3+ redox cycle in MIL-101(Fe) facilitates rapid electron shuttling, further amplifying the electrochemical signal toward CIP oxidation. This dual-functional interface enables simultaneous preconcentration and signal amplification, yielding a broad linear response spanning 0.05–15 μM, accompanied by a high sensitivity of 5.6492 μA·μM −1 , as well as an ultralow LOD of 0.006 μM. Additionally, this sensor also demonstrates outstanding selectivity, good repeatability, excellent reproducibility, and durable stability, retaining approximately 96.1% of its initial current signal after 21 days of storage. Furthermore, to rigorously validate practical feasibility, acceptable recoveries between 92.9% and 105.3% were measured in honey, tap water, and CIP eye drops, demonstrating its versatility across food, environmental, and pharmaceutical matrices. Overall, this work establishes a design blueprint for high-performance electrochemical sensors based on MIL-series MOF/carbon composites, opening new avenues for rapid, on-site antibiotic monitoring to ensure food safety, environmental protection, and pharmaceutical quality control.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124460
·
IF 7.5
Ruiting Jian,Manli He,Jiushan Cheng,Bowen Liu,Zhengduo Wang,Zhongwei Liu
Tetracycline is one of the most widely used broad-spectrum antibiotics, and its continuous release into aquatic environments has become a serious environmental concern. Although metal–organic frameworks (MOFs) have demonstrated great potential for photocatalytic wastewater treatment, conventional synthesis methods generally suffer from long reaction times and limited capability for controllable defect engineering. To address these challenges, a needle–plate pulsed discharge plasma strategy was developed for the direct synthesis of MIL-53(Fe). The effects of key plasma discharge parameters on the structure, defect structure, and photocatalytic performance of MIL-53(Fe) were investigated. Under the optimized conditions (6.2 kV, 120 min, an FeCl 3 /TPA molar ratio of 1:1, and Ar atmosphere), the obtained MIL-53(Fe) catalyst achieved an average tetracycline degradation efficiency of 91.57% within 120 min. Structural and photoelectrochemical analyses revealed that the obtained MIL-53(Fe) exists plasma-induced oxygen-vacancy-related defects while preserving the crystal framework of MIL-53(Fe). These defects promoted the separation and migration of photogenerated charge carriers, thereby significantly enhancing the photocatalytic activity under xenon-lamp irradiation. These findings demonstrate that needle–plate pulsed discharge provides an effective strategy for the controllable synthesis of defect-regulated MIL-53(Fe), offering new opportunities for developing high-performance photocatalysts for antibiotic-contaminated wastewater treatment.
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高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Junxiang Zhang,Zixin Yuan,Yingli Guo,Baomiao Ding,Xingping Zhang,Xinjun Xu,Hualin Yang
The new probe PP(Fe)@HRP with high catalytic activity was used in immunoassay. • The proposed immunoassay showed excellent sensitivity for detecting OTA. • The proposed immunoassay had fluorescence and absorbance dual-mode. Ochratoxin A (OTA) is a mycotoxin with carcinogenic properties. Thus, it is essential to establish a sensitive method for detecting OTA. In this work, a colorimetric and fluorescence dual-mode OTA immunoassay was established based on PP(Fe)@HRP probe. The PP(Fe)@HRP probe consists of PCN-224(Fe), PtNPs and HRP, all of which possess peroxidase activity. When combined to form PP(Fe)@HRP, the peroxidase activity increased significantly. Then, the new probe was used to oxidize TMB to generate blue signal. Meanwhile, the TMB oxidation product (oxTMB) effectively quenched the fluorescence of GSH-AuNCs to generate fluorescence signal. By modifying antibody onto this probe, linking them to the target OTA, an ultra-sensitive dual-mode OTA immunoassay was achieved. This immunoassay demonstrated excellent sensitivity. The limit of detection (LOD) of colorimetric mode was 0.09 ng/mL, and the LOD of fluorescence mode was 0.02 ng/mL. Besides, the immunoassay had high specificity toward OTA and satisfactory recovery rate in corn samples. Download: Download high-res image (135KB) Download: Download full-size image
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高影响因子
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