Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 2
·121490
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IF 7.2
Yaqi Cao,Chengbo Ma,Lijun Zhang,Tao Liao,Jinhao Cheng,Haojie Liu,Ying Chen,Wenchao Peng
Developing efficient solid waste-based catalysts for Fenton-like reactions is of great significance in wastewater treatment. Herein, a series of iron-copper bimetallic sulfides with multi-prismatic microstructures were facilely synthesized using wasted batteries as the metal precursors. With carbamazepine (CBZ) as the model pollutant and peroxymonosulfate (PMS) as the oxidant, the optimized Fe/Cu@S-1:1 catalyst can degrade CBZ to below the limit of quantification within 30 min and exhibit the wide pH range tolerance. The excellent catalytic activity is ascribed to the synergistic interaction between Fe and Cu sites, the abundance of surface Cu(I) and Fe(II) active sites, and the presence of highly reductive sulfur species that help maintain the metals with low-valent states during PMS activation. According to the quenching experiments, the main reactive oxidation species (ROSs) in Fe/Cu@S-1:1/PMS system are determined to be • OH, O 2 •− , and 1 O 2 . This study provides a novel strategy for designing high performance iron-copper bimetallic sulfide catalysts for Fenton-like reactions, and giving new insights into the resource utilization of wasted batteries for advanced wastewater treatment.
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JOURNAL OF POLYMER SCIENCE
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2026
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IF 3.6
Tianshu Wang,Dongpeng Li,Dandan Li,Wei Wang,Youhai Yu,Guangtao Qian,Chunhai Chen
Incorporating functional groups capable of interacting with gas molecules into the molecular structure is a pivotal strategy for enhancing the performance of polymer-based gas separation membranes. In this study, two diamines featuring spiro-bis-indane moieties and distinct functional groups were separately polymerized with 4,4′-(hexafluoroisopropylidene) diphthalic anhydride (6FDA) to synthesize two polyimide membranes. The effects of hydroxyl ( OH) groups and phenylamino ( NHPh) groups on gas separation performance were systematically investigated. Hydroxyl groups are known to enhance CO 2 solubility via hydrogen-bond-like interactions while disrupting chain packing to increase free volume, synergistically improving separation efficiency. This work further demonstrates that the basic phenylamino groups selectively adsorb CO 2 through Lewis acid–base interactions, boosting CO 2 solubility and amplifying solubility differences with nonpolar gases. Additionally, the rigid spiro-bis-indane structure collaborates with these functional groups to tailor the microporous network, thereby optimizing gas transport properties. Graphical In this work, two diamine monomers containing two different polar groups (phenylamino group and hydroxyl group, respectively) were synthesized and then polymerized with 6FDA to prepare gas separation membranes. This study verifies the modification method applicable for carbon dioxide/nitrogen separation.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9
Ruifang Qi,Yue Zhao,Jinming Lei,Huixian Jia,Chenghong Feng
Metal-free covalent organic frameworks (COFs) often face a critical trade-off wherein high photocatalytic activity relies on complex, expensive designs while cost-effective alternatives lack efficiency and stability. To address these issues, a nitro-functionalized COF (COF-NO₂) was developed via a one-step condensation method for bisphenol A (BPA) degradation. The –NO₂ groups act as intramolecular electron traps, narrowing the bandgap and boosting charge separation. COF-NO₂ achieved 97.3% BPA degradation within 120 min ( k = 0.031 min −1 ) with over 85% efficiency across five consecutive cycles. Moreover, it exhibited high efficiency across a broad pH range (3−11) and showed broad-spectrum activity toward various bisphenols, including bisphenol S, bisphenol F, bisphenol C, and 4-chlorophenol. Quantitative structure–activity relationship analysis identified HOMO energy as the key descriptor governing degradation kinetics for bisphenols. In pretreated petrochemical wastewater, COF-NO₂ also attained over 75% BPA removal, demonstrating practical potential. This molecular design promoted ·O₂ − generation and selective bond cleavage in BPA, thereby enabling efficient mineralization and a 44% reduction in toxicity. A continuous-flow fluidized bed reactor was designed and achieved 97.4% BPA removal in 180 min through optimized light-flow coupling. Furthermore, low-cost g-C₃N 4 was introduced to integrate with highly active COF-NO₂, forming a composite that reduced material costs by 20% while maintaining over 80% degradation efficiency. This work presents a synergistic strategy combining molecular orbital engineering with heterojunction design, offering a feasible route to cost-effective and scalable metal-free COFs.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 4.3
Yujie Xie,Yeping Wu,Xiuli Zhao,Gaoming Li,Ping Zhang,Yinyu Zhang
Polyetheretherketone (PEEK) is widely employed across various applications due to its exceptional properties; however, its chemical inertness and low surface energy result in poor bonding performance and susceptibility to failure under thermal shock. While single surface treatments prove inadequate for optimal bonding, and although previous studies have confirmed that combined approaches enhance PEEK’s bonding strength, a systematic comparison and mechanistic understanding of different treatment combinations remain lacking. This study investigated the effects on PEEK’s bonding performance and thermal shock resistance using pairwise combinations of sulfonation etching, plasma treatment, and a catechol-based prepolymer coating, all applied with mechanical wiping. Results demonstrated that the combined sulfonation and plasma treatment produced a composite interface with nanoscale pits and polar functional groups, integrating mechanical interlocking and chemical bonding. This yielded a high room-temperature bonding strength of 4.18 MPa—a 736 % increase over untreated-PEEK—yet after 32 thermal shock cycles (−78.5 °C to 120 °C), the strength decreased by 25.36 %. In contrast, the plasma and catechol-based prepolymer coating combination formed an interfacial transition layer. Although its initial strength was 3.74 MPa, it showed no degradation after identical cycling, indicating superior thermal shock resistance. This study confirms, for the first time, the effectiveness of combined treatments in enhancing bonding durability under extreme thermal cycling. It further reveals that a coating-buffered interface maintains durability more effectively than one relying solely on direct adhesive-substrate contact. These insights offer valuable guidance for designing interfaces of difficult-to-bond polymers like PEEK in demanding environments, including aerospace applications.
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Frontiers in Pharmacology
·
2026
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IF 4.8
Linlin Chen,Kanglu Wu,Chenyi Shou,Lijun Zhang,Mengya Tu,Borui Wang,Yun Cai,Zihui Zheng,Jia Sun,Qinli Ruan,Jun Guo
Introduction: Bushen Huoxue (BSHX) decoction is a traditional Chinese medicine formula that has been utilized clinically to treat Diminished Ovarian Reserve. However, the underlying mechanisms by which BSHX decoction increases fertility from the perspective of systemic stress protective responses remain poorly understood. This study aims to investigate how BSHX decoction improves female fertility by improving systemic stress resistance in a fertility-defective Caenorhabditis elegans model.Methods: Bisphenol A (BPA) was utilized to create a fertility-defective C. elegans model. Brood size was used to evaluate fertility. Survival under heat stress was used to evaluate stress resistance. Loss-of-function mutants and fluorescent protein transgenic strains were used to evaluate gene function. Polymerase chain reaction and RNA interference were used to detect gene expression levels or protein function.Results and Discussion: BSHX decoction significantly increased the fertility of BPA-exposed nematodes by inhibiting the accumulation of RHO-1 proteins in proximal oocytes. BSHX enhanced the heat stress resistance of germ cells, which is mediated by the PMK-1 and JNK mitogen-activated protein kinases (MAPK) pathways in germ cells. BSHX upregulated the transcriptional level and fluorescent protein level of the innate peptide T24B8.5 via the PMK-1 MAPK pathway. PMK-1 MAPK, induced by BSHX, further activated the mitochondrial unfolded protein response (UPRmt) in the gonad and intestine. The UPRmt -regulated gene hsp-6 was required to maintain mitochondrial function by reducing mitochondrial ROS levels and elevating the mitochondrial membrane potential, ultimately increasing the female fertility. In addition, a combination of metabolites (salvianolic acid B, quercetin, and asperosaponin VI), derived from the BSHX decoction, significantly enhanced the fertility of BPA-exposed nematodes through a mechanism highly similar to that of the BSHX decoction. Therefore, BSHX decoction increases fertility through the PMK-1 MAPK pathway and hsp-6-mediated UPRmt in BPA-exposed C. elegans.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2026
·Vol. 27
·期 2
·705
·
IF 4.9
Di Chen,Aoyun Meng,Zhen Li,Jinfeng Zhang
Designing and constructing heterojunctions has emerged as a pivotal strategy for improving the photocatalytic efficiency of semiconductors. In this study, we report the controlled synthesis of an Au/Zn3In2S6Schottky junction through a combination of hydrothermal and in situ photodeposition methods. The structural, morphological, and photoelectrochemical properties of the catalyst were meticulously characterized using a suite of techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), photoelectrochemical (PEC) measurements, and electron spin resonance (ESR) spectroscopy. The optimized 3% Au/Zn3In2S6composite exhibited a remarkable enhancement in both photocatalytic activity and stability, achieving a 90.4% removal of bisphenol A (BPA) under UV–visible light irradiation within 100 min. The corresponding first-order reaction rate constant was approximately 1.366 h−1, nearly 4.37 times greater than that of the pristine Zn3In2S6. This substantial improvement can be attributed to several key factors, including increased BPA adsorption, enhanced light absorption, and the efficient charge separation facilitated by the Au/Zn3In2S6heterojunction. Photogenerated holes, superoxide radicals, and hydroxyl radicals were identified as the primary reactive species responsible for the BPA degradation. This work highlights the potential of metal-modified semiconductors for advanced photocatalytic applications, offering insights into the design of highly efficient materials for environmental remediation.
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Journal of Environmental Sciences
·
2026
·
IF 6.3
Lihui Zhao,Can Jin,He Liu,Zhaozhe Yang,Yupeng Liu
Bisphenol A (BPA), a widespread endocrine-disrupting compound, necessitates efficient activation of peroxymonosulfate (PMS) for its degradation. Conventional carbon-based catalysts frequently exhibit limited efficiency, poor stability, and potential environmental risks. Bamboo-derived porous carbon material (BCM) and bamboo-derived porous carbon material loaded with Fe (BCM-Fe) serve as effective catalysts for activating PMS to degrade BPA. The BCM/PMS system achieved a BPA removal efficiency of 94.44 % within 150 minutes, while the BCM-Fe/PMS system attained 97.8 %. Quenching experiments and electron paramagnetic resonance (EPR) analysis identified non-radical singlet oxygen (¹O₂) as the dominant reactive species. Density functional theory (DFT) calculations demonstrated that atomically dispersed Fe species on BCM-Fe significantly enhanced PMS adsorption energy and activation kinetics compared to BCM. Both catalysts exhibited excellent reusability, confirming their potential as practical and sustainable catalysts. This study provides fundamental insights for designing efficient, environmentally benign carbon-based catalysts for advanced oxidation processes.
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BIOSENSORS & BIOELECTRONICS
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2026
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IF 10.5
Qi Feng,Jiaying Wang,Zileng Yu,Zhipeng Zhang,Huizi Zheng,Jiao Qu,Xiaolin Zhu
To address the growing environmental risks associated with emerging contaminants and limited rapid toxicity assessment tools, we developed a mediator-free microbial electrochemical biosensor using Escherichia coli nucleotide metabolism. This biosensor enables the direct detection of electroactive metabolites without exogenous mediators by utilizing the oxidation peak current as a sensitive toxicity indicator. An electrode was modified with a nanocomposite of carboxylated multi-walled carbon nanotubes and zinc oxide (MWCNT-COOH/ZnO), which significantly enhanced the electrochemical signals. Mechanistic studies revealed that the detection signal originated from the oxidation of guanine and xanthine. The biosensor was used to detect four bisphenol analogues and two per-/polyfluoroalkyl substances. The toxicity followed the order of bisphenol AF > bisphenol A > bisphenol F > bisphenol S, suggesting that bisphenol AF posed a higher toxicity risk than bisphenol A. The half-maximal inhibitory concentration (IC 50 ) for perfluorooctanesulfonic acid was 1011.13 μM, and its substitute, 6:2 fluorotelomer sulfonic acid, exhibited significantly lower toxicity at equivalent concentrations. The biosensor was further applied to actual water samples from the Yitong River, revealing generally low toxicity (inhibition rate <30 %) with higher inhibition rates observed at densely populated urban sites. This biosensor is characterized by simple operation, fast response, low cost, and independence from water turbidity or color, thereby offering an efficient and sensitive analytical platform for both toxicity assessment of emerging contaminants and safety evaluation of real water samples.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 21.1
Jiewen Qin,Zunfu Hu,Yuntao Liu,Guanlin Zhu,Zibao Gan,Chong-Chen Wang,Xiuwen Zheng
Introducing nitrogen or carbon defects (V N or V C ) in g-C 3 N 4 improves the electronic properties of metal active sites, enhancing Fenton-like catalytic efficiency. However, the combined introduction of V N and V C are rarely studied, and understanding their synergistic effects is important. Herein, this study proposes a precise synthesis strategy by combining Co single atom active centers with graphitic carbon nitride containing carbon/nitrogen double defects (V C, N ) to obtain Co-V C, N /CN-2 catalyst. This catalyst can efficiently activate peroxymonosulfate (PMS) to degrade paracetamol (PCM), achieving nearly 100 % non-radical degradation pathway. Moreover, the V C, N of Co-V C, N /CN-2 can regulate the electron density around Co atoms, optimizing charge separation and migration. Based on a series of experiments and density functional theory (DFT) calculations, it has been confirmed that there is a strong synergistic effect between Co single atom reaction sites and V C, N and the introduction of double defects can enhance photocatalytic efficiency, with a degradation rate exceeding 85 % in 15 cycles. This research offers a scalable method for creating stable single-atom catalysts and insights into electronic structure-mediated non-radical catalysis, advancing high-efficiency water purification system design.
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WATER RESEARCH
·
2026
·
IF 12.4
Junye Ma,Xuan Li,Wanchao Yu,Xingyi He,Baoliang Chen,Chiheng Chu
Electron transfer coupled to molecular O 2 activation drives ROS formation and underpins pollutant removal processes. Yet in heterogeneous matrices electron transfer is typically confined to nano-micrometer distances, which limits ROS efficacy. Here, we show that black carbon (BC) can bridge spatial gaps between electron source and O 2 , enabling centimeter-scale ROS generation. Using a solidified agarose reactor that mimics restricted transport, BC mediated electron transfer from zero-valent iron (ZVI) to distal zones, producing hydroxyl radicals ( • OH) and hydrogen peroxide (H 2 O 2 ) up to 18 mm from the ZVI source within 30-day experimental period; H 2 O 2 reached 28.6 ± 3.6 µM and • OH reached 103.3 ± 3.2 nM with rice-straw BC (300 °C) at 3 mm and then plateaued beyond 12 mm. Mechanistic analyses revealed that surface redox-active functionalities, rather than the polyaromatic conductive backbone, control BC’s electron-shuttling performance. Consistent with this mechanism, low-temperature BCs (≤500 °C), which retain more oxygenated surface moieties, gave up to 61.0-fold higher ROS yields than high-temperature (900 °C) samples. Furthermore, chemical oxidation of high-temperature BC reinstated these oxygenated groups and increased its electron-accepting and -donating capacities (to as high as 2.81 mmol e⁻ g -1 and 1.59 mmol e⁻ g -1 ), producing corresponding rises in ROS output. Because ROS were generated over an expanded spatial region, BC/ZVI composites accelerated degradation rates of phenol, bisphenol A, and diuron by 5.4–9.8-fold. Overall, BC functions as an effective electron shuttle that extends interfacial redox reactivity across centimeter scales, offering a sustainable approach to overcome electron-transport limitations in environmental remediation.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 4.6
Fangzhou Wu,Yonglei Xing,Huijuan Liu,Xiaoyong Jin,Gang Ni
Peroxymonosulfate (PMS)–based advanced oxidation processes (AOPs) are promising for pollutant removal, whereas metal-doped carbons risk ion leaching. Here we report a metal-free selenium–nitrogen co-doped porous carbon (Se–N/C) that efficiently activates PMS for phenol (Ph) degradation. Selenium was chosen for its larger atomic radius and high polarizability, which modulate electronic structure and create active sites. Se–N/C achieved complete removal of parent Ph (Ph peak disappearance) within 10 min with a total organic carbon (TOC) reduction of 52 %, and a pseudo-first-order rate constant about twentyfold higher than nitrogen-doped carbon. Radical scavenging tests and electron paramagnetic resonance (EPR) confirm a dual pathway involving radical (O 2 •− ) and non-radical ( 1 O 2 ) species. Density functional theory (DFT) indicates that co-doping tailors the electronic configuration, strengthens PMS adsorption (adsorption energy −3.07 eV), and enhances electron transfer. The catalyst remains active in the presence of common anions (SO 4 2− , Cl − , NO 3 − , and H 2 PO 4 − ) and humic acid, evidencing environmental tolerance. X-ray photoelectron spectroscopy and Raman spectroscopy identify graphitic nitrogen and C–Se–C as key centers, while selenium's antioxidative character supports cycling stability. This work provides a scalable, environmentally benign route for wastewater treatment and clarifies structure–activity relationships in PMS activation.
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JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Zongkai Li,Xiaoqing Wang,Qianqian Wang,Zhi Li,Qiuhua Wu,Chun Wang
Endocrine-disrupting bisphenols as endocrine disrupting chemicals present significant risks to the human endocrine system. Developing accurate and highly sensitive methods for detecting trace levels of bisphenols in food is crucial to ensure food safety and prevent health risks. Herein, a hydroxyl-functionalized covalent organic framework (TD-COF) was synthesized using 4,4′,4′'-triaminotriphenylmethane and 3,3′-dihydroxy-[1,1′-biphenyl]-4,4′-dicarbaldehyde as monomer. TD-COF demonstrates superior adsorption ability for bisphenols compared with hydroxyl-free COF, which can be primarily attributed to the presence of hydrogen bonding and π-π interactions. By combining high performance liquid chromatography-mass spectrometry and solid phase extraction technology based on TD-COF, a method for analyzing four bisphenols in river water and chicken was established. Under optimal conditions, the method exhibits a low detection limit (river water: 0.03-0.15 ng mL -1 , chicken: 1.4-3.5 ng g -1 ), satisfactory spiked recovery (river water: 87.0-107%, chicken: 88.5-105 %) and good relative standard deviations (river water: 4.5-6.5%, chicken: 4.0-5.7%).
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