Catalysts
·
2026
·Vol. 16
·期 9
·807
·
IF 4.5
Fukun Bi,Rong Qiao,Jiahao Xu,Yuzhe Lu,Jiafeng Wei,Yaofei Zhang,Xiaodong Zhang
The development of highly efficient catalysts is important for the photothermal catalytic oxidation of volatile organic compounds (VOCs). Herein, MIL-100(Fe) was used as the sacrificial template to prepare MnFeOxcatalysts with different Mn contents through the impregnation–calcination method, and their performance in photothermal catalytic oxidation of toluene was investigated. The results show that the content of Mn significantly affects the crystal phase structure, pore properties, surface chemical state, and optical response of the catalyst. Among them, 30%MnFeOxexhibits the best photothermal catalytic activity, with T50and T90being 211 and 237 °C, respectively, which are significantly lower than those of FeOx(232 and 260 °C). Characterization results suggested that the introduction of Mn caused the bandgap of FeOxto decrease from 1.96 to 1.67 eV. Meanwhile, the surface Fe2+, adsorbed oxygen (Oads) species, and oxygen vacancies were increased, enhancing visible light absorption and gaseous oxygen species adsorption and activation, which promoted the photothermal catalytic oxidation of toluene. Additionally, the 30%MnFeOxcatalyst presented good thermal stability and water resistance. Furthermore, during the reaction process, the in situ activation of the catalyst’s surface induced the increase in surface Fe2+, Mn3+,and Oadsspecies, which enhances the photothermal catalytic activity of the catalyst. Importantly, the in situ DRIFTS results further indicate that toluene is mainly oxidized along the path of toluene → benzyl alcohol → benzoate → maleic anhydride → CO2and H2O. This work provides a theoretical basis for the construction of low-cost, non-precious-metal Mn–Fe-based photothermal catalysts.
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Separations
·
2026
·Vol. 13
·期 5
·130
·
IF 3.5
Yanlin Wu,Lanhua Luo,Yuan Li,Shanghua Shi,Xiaoning Wang,Wenbo Dong,Gilles Mailhot
Over the past 20 years, the iron-activated persulfate systems have been widely used for removing pharmaceuticals and personal care products (PPCPs) from water. However, slow Fe(III)/Fe(II) redox cycling and precipitation of iron, unless in very acidic conditions, were the main limitations. Thus, two ligand-assisted Fe(III)/persulfate systems, Fe(III)-acetohydroxamic acid (AHA)/peroxydisulfate (PDS) and Fe(III)-nitrilotriacetic acid (NTA)/peroxymonosulfate (PMS), were comparatively investigated for the degradation of atenolol (ATL) in this study. The experimental results showed that the Fe(III)-NTA/PMS system worked much better than the AHA system. However, the cost of PMS is higher than that of PDS, which should be considered. The primary advantage of the NTA system was its ability to overcome the pH limitations. It worked well over a wide pH range (3.0–10.0), whereas the AHA system could only be used in a narrower pH window (pH 2.4 to 6.5). The investigation of radicals that contributed to ATL degradation revealed that sulfate radicals (SO4•−) were dominant in the NTA system, while hydroxyl radicals (•OH) and SO4•−were the primary and secondary radicals in the AHA system. These results provided useful insight into the comparative behavior of two ligand-assisted Fe(III)/persulfate systems for ATL degradation, with the Fe(III)-NTA/PMS system showing clear potential under neutral or near-neutral conditions, while Fe(III)-AHA/PDS may still represent a lower-cost option under acidic conditions.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xinru Chen,Zisheng Zhou,Xiaoying Wei,Guomin Wang,Zheyi Meng
A flexible self-supported Fe/Mn-CNF anode derived from MOFs was constructed. • Fe/Mn-CNFs-800 achieve superior electrocatalytic efficiency for TC degradation. • Fe/Mn-CNFs-800 exhibit strong flexibility, stability, and recyclability. • Graphitized Fe/Mn‑carbon interface enhances electron transfer and ROS generation. Electrocatalytic degradation of antibiotics remains limited by active site instability, poor electron transfer, and high energy consumption. Herein, we report a flexible, self-supported Fe/Mn‑carbon composite nanofibrous membrane (Fe/Mn-CNF) via electrospinning, two-step MOF growth, and controlled carbonization. By integrating a continuous conductive nanofiber network with a graphitized Fe/Mn heterointerface, this design enables uniform dispersion of bimetallic redox centers and enhanced interfacial electronic coupling. As a result, the Fe/Mn-CNF-800 electrode achieved 97.23% TC removal within 80 min (k = 0.046 min −1 ) and ultralow energy consumption (0.11 kWh·m −3 ), while maintaining over 88% efficiency after eight cycles. Radical quenching and electron paramagnetic resonance analysis revealed that 1 O 2 as the dominant reactive oxygen species (ROS), synergistically assisted •OH, O 2 • − , and ClO•. Density functional theory calculations further confirmed strong electronic coupling and substantial charge redistribution at the Fe/Mn‑carbon interface, enhancing both electronic conductivity and catalytic reactivity. High-performance liquid chromatography-mass analysis identified multistep TC degradation pathways, while toxicity assessment confirmed reduced toxicity after treatment. This work demonstrates a self-supported electrode with strong applicability to real water matrices, providing an efficient and low energy pathway for treating recalcitrant antibiotic pollutants. Download: Download high-res image (219KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Longji Li,Mengting Wang,Yanru Zhu,Ziyu Zou,Pin Gao,Xiaoran Li,Yajie Qian,Gang Xue
Ultraviolet A (UVA) as the promising light source in disinfection and photochemical applications is less effective in activating peroxides. Iron is wide spread in natural waters, while Fe(III) is less reactive in degrading organics. In this study, Fe(III) was found to be efficient in promoting the effectiveness of UVA/periodate (PI) in degrading various micropollutants, including carbamazepine (CBZ), sulfamethoxazole (SMX), nitrobenzene (NB), benzoic acid (BA) and tetracycline hydrochloride (TC). Among them, TC degraded with the highest rate constants, which was further confirmed to be driven by the generation of Fe(III)-TC complex. Fe(III)-TC complex facilitated the reduction of Fe(III) to Fe(II), and this reduction would be further accelerated by UVA. The generated Fe(II) thereafter enhanced the efficiency of PI activation. Scavenger combined with probing experiments preliminarily demonstrated TC degradation was based on • OH , IO 3 • dominated radical oxidation and 1 O 2 , Fe(IV) dominated nonradical oxidation. Electron paramagnetic resonance (EPR) combined with probing test further confirmed the • OH , IO 3 • , and 1 O 2 , Fe(IV) involved TC oxidation process. The degradation process was little influenced by water matrices. Cl − and NO 3 − even slightly promoted TC degradation through reduction the solution pH, since acidic condition was more favorable by TC degradation. Excessive humic acid (HA) would hinder TC degradation, as UVA transparency would be reduced by HA. The degradation of TC in the Fe(III)/UVA/PI system proceeded through multiple pathways involving oxidation, deamination, demethylation, ring-opening. Ecotoxicity analysis targeting on E. coli . Found the toxicity of TC intermediates increased, while the end products were nontoxic. Fe(III)/UVA/PI was efficient in inactivating E. coli. , which highlighted the application in water purification as the dual roles of oxidation and disinfection.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Yu Wanting,Wu Di,Ao Zhongjie,He Yu,Tang Dianping
Methods based on photo-heat conversion materials have been developed for the immunoassays, but most involve low sensitivity or complex procedures and are unsuitable for routine use. Herein, a portable photothermal immunoassay was designed for point-of-care (POC) testing of disease-related biomarker (carcinoembryonic antigen (CEA)) in biological fluids on a digital near-infrared (NIR) thermometer with smartphone readout. Initially, the photothermal materials with manganese (Mn) and iron (Fe) bimetallic oxide (MnFe 2 O 4 ) were synthesized via a typical hydrothermal method, and then functionalized with polyclonal anti-human CEA detection antibody (pAb 2 ). In the presence of target CEA, a sandwich-type immunoreaction was implemented on monoclonal rabbit anti-human CEA capture antibody-coated microplate with MnFe 2 O 4 -pAb 2 . Under an 808-nm laser irradiation, the labeled MnFe 2 O 4 on the detection antibody converted the light into heat, thereby causing the increasing temperature of the detection solution in the microplate. The variation in the temperature was collected on a portable NIR thermometer with smartphone readout. Under optimal conditions, the MnFe 2 O 4 -based immunoassay exhibited good photothermal responses for the detection of target CEA with a dynamic linear range of 0.01–150 ng mL −1 at a low detection limit of 0.56 pg mL −1 . Good reproducibility, intermediate precision, and high specificity were acquired. No significant differences at the 0.05 significance level were encountered for the analysis of human serum samples between the developed photothermal immunoassay and the commercially available enzyme-linked immunosorbent assay (ELISA) for the determination of CEA. Importantly, this immunoassay offers promise for simple and cost-effective analysis of biological samples in diagnostics. Graphical
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International Journal of Applied Ceramic Technology
·
2026
·Vol. 23
·期 3
·e70206
·
IF 2.6
Weiwei Pei,Hongli Liu,Guanqi Xu,Junjie Zhang,Boshi Gao,Wenshuo Cao,Mingwei Li,Xianlin Xiao,Mingda Liu,Yuhao Liu,Xiaoxiao Huang
Driven by the rapid development of microelectronics and aerospace engineering, lightweight, ultrathin, broadband microwave absorption (MA) materials are urgently required for advanced electromagnetic protection and stealth technologies. Conventional ceramic-derived MA absorbers face inherent bottlenecks of incompatible impedance matching and insufficient attenuation efficiency, severely restricting their application in miniaturized aerospace and electronic systems. A novel bubble coral-like Fe-MOF modified carbonaceous nanofiber composite (BF@CNFs) is fabricated via electrospinning, thermal curing, and high-temperature carbonization, with its microstructure precisely tailored by optimizing polyacrylonitrile/phenolic resin ratio and carbonization heating rate. The optimized BF@CNF-2 delivers a minimum reflection loss of −36.2 dB at 1.3 mm thickness, with an effective absorption bandwidth nearly covering the entire Ku-band (12.0–18.0 GHz). This outstanding performance stems from the synergistic effect of conductive carbon nanofiber scaffolds and Fe-MOF-derived magnetic phases. The work provides a scalable, ceramic-compatible strategy for high-performance MA materials, addressing long-standing technical challenges, with promising prospects in aerospace stealth and electromagnetic shielding.
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CHEMISTRY LETTERS
·
2015
·Vol. 44
·期 6
·743-745
·
IF 1.23
Guan Dinghui,Han Lu,Wang Lulu,Song He,Chu Wenyi,Sun Zhizhong
The efficient, simple, and environment-friendly route of direct cyanation of picolinamides has been developed with nontoxic K4[Fe(CN)6] as the cyanide source through Pd-catalyzed C–H bond activation. A series of N-(naphthalene-1-yl)picolinamide derivatives were successfully transformed to the corresponding cyanation products. The cyanation mechanism has also been speculated.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Xiaoyuan Zhang,Rui Zeng,Zhenbei Wang,Fei Qi,Chen Li,Yatao Liu,Fan Li,Ziteng Chen,Yujia Yuan,Zhuoran Bai,Yongshun Yu,Jun Nan,Amir Ikhlaq,Shengnan Li
The potential of Fe(VI) enhanced coagulation-ultrafiltration (C-UF) for the simultaneous enhancement of ibuprofen (IBP) removal and membrane alleviation was investigated by comparing Fe(VI)-UF, FeCl 3 -UF, AlCl 3 -UF, Fe(VI)-FeCl 3 -UF, and Fe(VI)-AlCl 3 -UF. The results showed that Fe(VI)-FeCl 3 -UF and Fe(VI)-AlCl 3 -UF achieved IBP removal efficiencies of 66.6% and 76.9%, respectively, which were significantly higher than those obtained with Fe(VI)-UF, FeCl 3 -UF, AlCl 3 -UF. This confirmed that Fe(VI) enhanced C-UF could effectively improve IBP removal compared to individual Fe(VI)-UF or conventional C-UF. This improvement was attributed to additional highly reactive Fe(V)/Fe(IV) intermediates generated by adding metal coagulants to instantaneously activate residual Fe(VI) during the Fe(VI) enhanced C-UF process. In addition, Fe(VI)-FeCl 3 -UF and Fe(VI)-AlCl 3 -UF further alleviated total membrane fouling compared to FeCl 3 -UF and AlCl 3 -UF, with a significant shift of membrane fouling toward reversible fouling. Floc properties, NOM characteristics, and membrane surface characterization were comprehensively analyzed to reveal membrane fouling alleviation mechanisms in Fe(VI) enhanced C-UF. Simultaneous cleavage into smaller molecules and polymerization into larger fractions of NOM by Fe(VI) could reduce the affinity of foulants for membrane surface adsorption and consequently lower irreversible fouling. While Fe(VI) reduction would produce iron-based hydroxides to participate in the growth process of flocs, leading to the formation of flocs with higher density. These flocs would accumulate on membrane surface to form a denser cake layer, which contributed to severe membrane fouling.
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VETERINARY MICROBIOLOGY
·
2026
·
IF 2.8
Leyu Hu,Lexi Gao,Xingwei Fu,Zesheng Rong,Yue Cheng,Yuhan Hou,Lu Han,Xin Ran,Guiwen Guan,Ting Zhou,Lingling Chang,Xiaomin Zhao,Qian Du,Yong Huang,Dewen Tong,Mingjun Zhu
PEDV infection induces intracellular iron accumulation in host cells. • Iron promotes CoV replication by enhancing Fe-S cluster-dependent RdRp activity. • TEMPOL suppresses CoV replication by disrupting viral Fe-S cluster integrity. • TEMPOL exhibits broad-spectrum anti-CoV activity in vitro and in vivo. • TEMPOL effectively counteracts iron-exacerbated viral pathogenesis in vivo. Coronaviruses (CoVs) can cause severe respiratory and enteric diseases, posing major threats to human health and the livestock industry. However, the host metabolic mechanisms underlying viral replication remain unclear. Using porcine epidemic diarrhea virus (PEDV) as the primary model, this study investigated the role of iron metabolism in CoV replication and its mechanisms. Our results showed that PEDV infection markedly induced intracellular iron accumulation, while exogenous iron supplementation enhanced viral replication and iron chelation suppressed it. Mechanistically, iron enhances viral replication by promoting the formation of iron-sulfur (Fe-S) clusters, essential cofactors for the viral RNA-dependent RNA polymerase (RdRp). Based on these findings, we further evaluated the antiviral activity of TEMPOL, a small molecule targeting viral Fe-S clusters. TEMPOL reduced RdRp activity and effectively inhibited PEDV replication. Moreover, TEMPOL exhibited broad-spectrum antiviral activity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), infectious bronchitis virus (IBV), and porcine deltacoronavirus (PDCoV). Importantly, TEMPOL effectively reversed FAC-promoted viral pathogenesis, alleviating tissue lesions and clinical symptoms across multiple CoV animal models. Collectively, this study reveals a key role of iron metabolism in CoV replication and suggests that targeting viral Fe-S clusters may provide a novel strategy for anti-CoV therapy against diverse CoVs.
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Advanced Science
·
2026
·
IF 14.1
Shuhui Liu,Yantao Wang,Ya Liu,Jingkai Lin,Shaobin Wang,Wenjie Tian
SnS is a low‐cost and environmentally benign semiconductor for photocatalysis and piezocatalysis, but its direct use for peroxymonosulfate (PMS) activation remains limited. Here, we develop a facile Fe substitution strategy to construct atomically dispersed Fe‒S in SnS nanostructures (Fe‐SnS) for efficient PMS activation. The catalytic activity shows a volcano‐shaped dependence on Fe incorporation, with 5% Fe‐SnS (Fe/Sn molar ratio of 4.63%) giving the optimal performance, achieving efficient acetaminophen (APAP) removal with a rate constant of 1.23 min ‒1 , which is 3.84 and 176‐fold higher than those of SnS and commercial SnS, respectively. In situ X‐ray absorption spectroscopy reveals a site‐dependent activation mechanism in which Sn sites directly coordinate with O in PMS. Density functional theory calculations further show that Fe incorporation induces local electronic redistribution around neighboring Sn sites and enhances the Sn–PMS interfacial interaction. Fe incorporation also attenuates the negative surface charge of SnS, further facilitating PMS interaction. Mechanism studies revealed that APAP degradation proceeds via sulfate and hydroxyl radical‐dominated pathway. These findings clarify the distinct roles of host Sn and atomically dispersed Fe sites in PMS activation. Atomically dispersed Fe regulates the local electronic environment and surface properties of SnS, while PMS preferentially coordinates to Sn through Sn–O interaction. Fe incorporation further enhances the Sn–O PMS interfacial interaction, facilitating Sn‐centered PMS activation and the generation of SO 4 •− /•OH for APAP degradation, thereby clarifying the distinct roles of host Sn and atomic Fe sites.
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Asian Journal of Organic Chemistry
·
2025
·
IF 2.7
Yi-Feng Qiu,Xu-You Cao,Feng Li,Guo-Chao Liang,Hao Zhang,Fu-Rong Wang,Hai Yang Liu
A series of new hangman iron corroles with different electronic structure and pending aldehyde group were prepared and used as catalyst in Baeyer–Villiger (B–V) oxidation reactions. The results show that hangman iron corroles exhibit faster reaction rates and higher ε-caprolactone yields as compared to triaryl iron 5,10,15-tri(pentafluorophenyl) corrole (Fe(tpfc)Cl). With the increase in the electron-withdrawing ability of the meso-position substituents of hangman iron corrole, the yield of caprolactone also increases. Under optimal conditions, the best hangman iron corrole bearing two pentafluorophenyl groups (FePXC) may give a yield of 97% at only 0.07 mol% catalyst loading. The turnover number (TON) of the FePXC catalyst could be up to 2100 in a gram-scale test of oxidation of cyclohexanone. This work demonstrates the good potential of hangman corroles in B–V oxidation.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Shan Huang,Danyu Lv,Yuhuan Geng,Fuhao Yue,Xinan Zeng,Mengwai Woo,Zhong Han,Ji Ma
Malachite green (MG) is a toxic contaminant commonly found in aquaculture, making its effective removal and detection crucially important. In this study, MIL-100(Fe) was synthesized via a microwave-assisted hydrothermal method under optimized conditions (150 °C, 200 W, 30 min; FeCl₃·6H 2 O:H₃BTC = 2:3). The resulting material exhibited excellent structural stability, a high specific surface area (1169.9 m 2 /g), and a remarkable MG adsorption capacity of 714.29 mg/g. To enable practical application and reusability, MIL-100(Fe) was immobilized onto a melamine sponge (MeS) using polyvinylidene fluoride (PVDF) as binding agent, forming a recyclable MeS/PVDF/MOF composite. When applied for solid-phase extraction of MG in conjunction with UV detection, the composite demonstrated high recovery rates (92.1–99.4 %), a low detection limit (2.29 μg/L), and consistent performance with over 80 % recovery after six reuse cycles in both real fish and wastewater samples. This study presents a simple, efficient and sustainable strategy for the adsorption and detection of MG in aquatic food matrices.
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