CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Wenxu Zhang,Zirui Ma,Mengyue Zhang,Zhanpeng Yu,Liangliang Wu,Ying Tang,Lianchun Zhao,Guofu Ma,Ziqiang Lei
The persistent coexistence of heavy metals and organic pollutants in aquatic systems has emerged as a critical challenge in global environmental remediation strategies. The study of materials for simultaneous and efficient removal of multiple pollutants is particularly important. In this study, a three-dimensional reticulated multifunctional adsorbent material, ADS-Gel-1 (α-CD/CMS-P(AA- co -SS)) was constructed based on free radical polymerization using α-cyclodextrin (α-CD) and carboxymethyl chitosan (CMS) as the dual raw materials. Performance tests showed that the material exhibited rapid adsorption kinetics ( t ≤ 150 min) for a wide range of pollutants including antibiotics, dyes and heavy metal ions in a complex aqueous environment (pH 3–9), and the adsorption of norfloxacin (NOR), tetracycline hydrochloride (TC), procaine (Pr), methylene blue (MB), Mn(II) and Cu(II) followed the Langmuir model. The adsorption process is a spontaneous reaction, and the adsorption process is exothermic. The maximum adsorption amounts of NOR, TC, Pr, MB, Mn(II) and Cu(II) reached 861.48, 617.08, 829.84, 1667.52, 1054.87 and 1226.00 mg/g, respectively. The adsorption mechanism involves multiple synergistic effects such as host-guest inclusion, π-π stacking, metal coordination and hydrogen bonding networks. In addition, ADS-Gel-1 maintained the removal rate above 49.06 % in five reusable cycles. It provides a novel functional material design strategy for environmental remediation.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Shuyang Zhou,Zhongyu Ren,Lin Yang,Chenglin Zhu,Wenxiu Xie,Xueyang Feng,Qi Jing
Tetracycline (TC) has attracted significant attention due to its persistence and widespread occurrence in aquatic environments, making the development of efficient removal strategies essential. In this study, an Fe-ZIF-67@CNF/CS composite aerogel with high-efficiency adsorption and catalytic performance was developed. Fe²⁺ doping introduced additional catalytically active sites while preserving ZIF‑67’s excellent adsorption performance, and the 3D porous nanofiber/chitosan (CNF/CS) aerogel effectively anchored Fe‑ZIF‑67 to prevent aggregation and enhance water stability. Both adsorption and PMS-catalyzed experiments demonstrated excellent TC removal, with a maximum adsorption capacity of 500.2 mg·g −1 and 91.2 % degradation within 30 min under low catalyst loading, across a broad pH range. These outstanding performances stem from adsorption-catalysis synergy: adsorption is driven by electrostatic attraction, hydrogen bonding, π-π stacking, and coordination, while degradation proceeds via rapid ROS generation under bimetallic Fe/Co synergy following adsorption enrichment. Based on the temporal contributions of adsorption and catalysis, the system mechanism for synergistic TC removal was elucidated. LC-MS analysis of TC degradation intermediates identified three degradation pathways and assessed their potential hazards. This work proposes a novel strategy for enhancing TC removal efficiency in water by optimizing adsorption-catalysis synergy.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 30
·1-13
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IF 2.8
Huang Yi-Rui,Li Wei,Wang Ze-Hong,Jian Xiao-Jian,Zhou Zi-Zhe,Jia Xiang-Xiang,Liu Hong-Yu,Lu Yi-Fan,Wang Jun-Chuan,Wu Xiang-Feng,Wang Hui,Zhou Er-Peng
Chiral optoelectronic sensors detect chirality by selectively binding with chiral substrates, causing changes in electrical signals, which have attracted wide attention for their chiral recognition ability. In this study, the Ti 3 C 2 /ZIF-67/D-His electrochemical sensors were successfully synthesized. Firstly, ZIF-67/D-His was obtained using hexahydrated cobalt nitrate, dimethylimidazole, and D-histidine (D-His). Then, the ZIF-67/D-His film was grown on the surface of the Ti 3 C 2 film using a spin-coating method. By changing the spin-coating cycles, the influence of the ZIF-67/D-His film thickness on the detection performance was studied. The results showed that when the spin-coating cycle was three, the electrochemical sensor (Ti 3 C 2 /ZIF-67/D-His-3) exhibited good detection performance for D-Ala with a detection limit of 1.1 μM, and additionally demonstrated an excellent selective detection ability for D-Ala, with a significant difference in the differential pulse voltammetry (DPV) current intensity between D-Ala and L-Ala solutions. Besides, the detection curve for D-Ala showed a linear relationship with the concentration of the D-Ala solution. Furthermore, the Ti 3 C 2 /ZIF-67/D-His-3 electrochemical sensor demonstrated good stability and could be reused multiple times after simple cleaning. The Ti 3 C 2 /ZIF-67/D-His prepared in this work shows promising application potential in the area of electrochemical sensors.
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Nanoscale
·
2025
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IF 5.1
Jialong Jiang,Shida Han,Yuan Ji,Hong Wu,Shaoyun Guo
The coupled problems of heat dissipation and electromagnetic compatibility need to be addressed urgently in highly miniaturized and integrated electronic devices. Herein, polydimethylsiloxane (PDMS) composites featuring core-sheath FeCo@vertically aligned carbon fiber (VACF) arrays were prepared via magnetic field-assisted vertical alignment, combined with in-situ high-temperature growth and infiltration processes. Within the composite, the VACF arrays provide efficient phonon transport pathways in the through-plane direction, while the magnetic FeCo alloy shells function to isolate the VACF arrays, optimizing impedance matching and enhancing electromagnetic wave absorption loss. By regulating the FeCo alloy content, the through-plane thermal conductivity and total electromagnetic interference (EMI) shielding effectiveness of the composite reached 42.03 W/(mK) and 41.6 dB, respectively, while the reflection effectiveness was only 1.5 dB. This work demonstrates the FeCo@VACF/PDMS composite that simultaneously achieves ultrahigh through-plane thermal conductivity and absorption-dominant EMI shielding, providing a novel approach to designing high-performance, multifunctional thermal interface materials.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lingtong Li,Ting Shen,Juan Liang,Jiaxiu Guo
A novel self-assembled Mn 3 O 4 @Bi 5 O 7 I/BiOI (Mn 3 O 4 -BBOI) bi-heterojunction photocatalyst was synthesized via a facile one-step hydrothermal method and systematically characterized to investigate its optoelectronic properties. The photocatalytic performance was evaluated through the degradation of NO in a continuous-flow microreactor. Results indicate the successful construction of two distinct interfacial structures within the Mn 3 O 4 -BBOI system: an interface between Mn 3 O 4 and the Bi 5 O 7 I/BiOI heterostructure, and an internal interface between Bi 5 O 7 I and BiOI. These interfaces exhibit lattice distortions and vacancies, which are critical for promoting charge separation. Specifically, Mn 3 O 4 acts as an electron acceptor, facilitating the transfer of electrons from I⁻ in the bismuth-based substrate to Mn 3 + in Mn 3 O 4 , thereby optimizing the generation and recombination dynamics of charge carriers. The Mn 3 O 4 -BBOI photocatalyst demonstrates stable performance, achieving 56–60 % NO removal efficiency under light irradiation, along with excellent suppression of toxic NO₂ byproducts. Introduction of a small amount of water vapor (5 vol%) increase the NO removal efficiency to the instantaneous maximum value of 65 %, although the inhibitory effect on NO₂ is slightly attenuated. Mechanistic studies reveal that superoxide radicals (•O 2 ⁻) serve as the primary active species responsible for the oxidation of NO to nitrite/nitrate (NO 2 ⁻/NO 3 ⁻), while hydroxyl radicals (•OH), generated via the reaction between •O 2 ⁻ and adsorbed H 2 O, contribute secondarily to the oxidation process.
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Journal of Energy Storage
·
2025
·
IF 9.8
Linxun Li,Jing Peng,Liu Yang,Houbin Liu,Zhenyu Li,Guilong Yan,Chunxia Zhao,Li Wang,Xungai Wang,Xuezhong Zhang,Yuanpeng Wu
Solid-solid phase change materials (SSPCMs) are widely recognized as highly promising candidates for applications in the field of thermal energy storage and management. However, due to their limited functionality and weak mechanical strength, progress in exploring the practical applications of SSPCMs has been limited to date. Here, we propose a green and environmentally friendly strategy for manufacturing photothermal composite SSPCM with high latent heat and mechanical strength. A triethanolamine-containing polymer promotes cross-linking and the formation of hydrogen bonds between molecules. Additionally, SSPCM is doped with carboxylated carbon nanotubes (CNTs-COOH) to synthesise composite phase change materials. This method enables the composite phase change material to exhibit high phase change enthalpy (101.2 J/g), excellent flexibility, outstanding tensile strength (~43.0 MPa), and significant tensile strain (1160.0 %). Furthermore, owing to intermolecular cross-linking and the presence of CNTs-COOH, these composites also exhibit excellent shape stability, shape memory functionality, self-healing capability, and high thermal conductivity. Finally, photothermal characterization demonstrated that incorporating 5 % CNTs-COOH into the phase change material yielded a photothermal conversion efficiency of 83.04 %. Based on this result, a sustainable heating strategy was developed, enabling cyclic daytime heat storage and nighttime heat release.
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SOLID STATE SCIENCES
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2025
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IF 3.3
Tuo Ping,Dashuang Wang,Can Wang,Xiaobin Gong,Zhilan Du,Xinfang Zhang,Yuxin Zhang
Scalable synthesis of hierarchical architectures with targeted interface engineering enables dual-functional materials for efficient microwave absorption and oxygen evolution reaction (OER). A bio-template-directed sulfurization strategy constructs Ni x S y @diatomite core-shell hybrids. Sulfur-modulated interfaces enhance both electromagnetic dissipation and electrocatalytic kinetics. The porous diatomite/Ni-S gradient structure achieves ideal impedance matching and multi-phase polarization, yielding outstanding microwave absorption: 93.5 dB minimum reflection loss at 15.86 GHz and an ultra-wide 6.66 GHz bandwidth (covering C/Ku bands). Moreover, it exhibits superior OER performance with a low overpotential (258 mV@10 mA cm −2 ) and Tafel slope of 82.62 mV dec −1 in alkaline solution, outperforming the commercial RuO 2 . High electrochemical surface area further supports enhanced kinetics. Crucially, bio-inspired design ensures thermodynamic stability (<1 % mass loss, 20–400 °C) and durability for high performance of microwave adsorption, also bionic architecture improves the active sites density of the electrode to enhance water splitting. This work bridges scalable synthesis, interfacial optimization, and dual functionality for next-generation electromagnetic protection and energy conversion systems.
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MATERIALS CHEMISTRY AND PHYSICS
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2025
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IF 4.7
Jiayi Cheng,Zuyao Wang,Weizhong Yang,Yuan Ma,Miaomiao He
Bacterial resistance has seriously threatened public health security, high-entropy alloys (HEAs) present an unprecedented opportunity for the removal of drug-resistant bacteria due to their unique cocktail effect and tailorable physicochemical properties. Based on this, Zn–Fe–Mo–Co–Ni HEA (ZFMCN) is proposed as an antibacterial strategy against drug-resistant bacteria owing to the released antibacterial ions and near-infrared (NIR) light activated ROS generation. In vitro antimicrobial experiments demonstrated that ZFMCN can effectively eliminate the drug-resistant Escherichia coli ( EIEC ) and the methicillin-resistant Staphylococcus aureus (MRSA) by virtue of its ability to release antimicrobial ions and generate reactive oxygen species (ROS) under NIR irradiation with antibacterial rates of 92.81 ± 1.54% ( EIEC ) and 98.52 ± 1.22% (MRSA) respectively. Meanwhile, ZFMCN also has favorable cytocompatibility. Thus, we have developed a ZFMCN alloy that demonstrates potential as a promising antimicrobial agent against drug-resistant pathogens, while also establishing a foundation for subsequent research on promoting tissue healing.
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Jie Zhou,Jingyi Zhu,Zhaozhong Yang,Yuqi Sun,Shuang Wang,Jiayu He,Xiaogang Li,Liangping Yi
The failure of traditional acid systems to retard reaction rates has posed challenges for acid fracturing in ultra-deep carbonate reservoirs. Microencapsulated acid can address the retardation issue by targeting release at distal fractures, but existing formulations lack sufficient pressure resistance to meet operational demands, and their controlled-release mechanisms in complex environments remain unclear. This study employed emulsion polymerization to prepare high-temperature and high-pressure resistant microencapsulated acid, incorporating benzene rings via the addition reaction of N -hydroxymethyl acrylamide with isocyanate monomers containing aromatic rings to enhance thermal and pressure resistance. Trimethylolpropane tri-acrylate was used as a trifunctional crosslinker to simultaneously improve thermal stability. The effects of varying benzene ring content on the microcapsules' morphology, thermal resistance, pressure tolerance, load rate, and shear resistance were investigated, leading to the optimal product MA-TDI-2. It exhibited the highest sphericity and smoothness, with a thermal resistance of 199.4 °C, pressure resistance of 69 MPa, and shear tolerance of 170 s −1 . These properties ensure targeted release in distal fractures, occurring only at 180–200 °C and 55.2–69 MPa. Post-release, the point etching exhibited greater non-uniformity compared to the planar etching of gelled acid. Finally, the hierarchical influence of environmental factors on controlled release was determined as pressure > temperature > salinity, where high pressure directly crushes the shell to promote release, high temperature softens and enlarges shell pores to accelerate release, and high salinity causes shell shrinkage to inhibit release. The developed product and elucidated release mechanisms can advance the application of microencapsulated acid in ultra-deep acid fracturing.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yuanyuan Guo,Wanqing Wu,Chengzhuo Li,Yu Zhou,Van Thanh Pham,Qinggong Zheng
Hydrogen (H 2 ) storage in cluster hydrates is a safe and effective method. However, the strict formation conditions of pure hydrogen hydrates and the obstruction of gas-liquid mass transfer have seriously hindered the effective application of hydrogen hydrates. To enhance the formation of hydrogen hydrates, it was proposed to use metal-organic framework materials as kinetic promoters to enhance the formation of H 2 /1,3-DIOX hydrates. The experimental conditions in this paper were 271.65 K, 13.2 MPa and 9.2 MPa with 5.56 mol% 1,3-DIOX. Adding 2000 ppm MOF-808 to the composite system increased the volume capacity of hydrogen storage by 77.56% and shortened the t 90 time by 59.76%. When the gas-liquid ratio is 3.40, the weight capacity of hydrogen storage can be 0.53 ± 0.01 wt%. Five cycles later, the MOF-808 structure remained intact. The research results obtained in this paper are highly significant to guide the application of metal-organic framework materials in hydrogen hydrates.
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JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Chuang Liu,Ying Li,Yu Zhang,Shiyu Li,Jun Dang
The discovery of tyrosinase modulators from natural products has long been hampered by limitations in screening efficiency and accuracy. In this study, a novel online screening system for tyrosinase was constructed based on HPLC technology that enables high-throughput recognition of active constituents in complex matrices. Applying this HPLC-tyrosinase system to Dracocephalum heterophyllum ( D. heterophyllum ), three active peaks were precisely captured, which were subsequently isolated and structurally characterized as caffeic acid, verbascoside, and rosmarinic acid. Enzyme activity assays revealed that caffeic acid (IC 50 = 1.08 mM) and rosmarinic acid (IC 50 = 0.41 mM) markedly inhibited tyrosinase activity, whereas verbascoside exhibited activating properties (EC 50 = 0.24 mM). The action mechanisms and bioactivities of these compounds were further elucidated through density functional theory calculations, molecular docking analysis, and in vivo validation. Collectively, the online HPLC-tyrosinase activity screening system established in this work not only provides a theoretical basis for the high value-added development of D. heterophyllum , but also delivers a high-throughput, precision tool for discovering natural tyrosinase inhibitors, demonstrating robust application potential in the fields of cosmetic science, food preservation and pharmaceutical development.
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JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Xuemeng Xu,Xiaxing Feng,Shuang Wang,Yuhong Lin,Bing Wang,Yaming Sun,Chenchen Song,Lijun He,Ke Zhang
Aflatoxin B 1 (AFB 1 ) and its biosynthetic precursors usually coexist and pose a significant risk to food safety, but the simultaneous and accurate detection remains challenging due to their diverse structures and trace levels as well as complex food matrix. Herein, we proposed a novel triphenyl ionic liquid-modified multipods periodic mesoporous organosilica (mp-PMO-IL(ph) 3 ) with controllable pods, serving as an adsorbent of dispersive solid-phase extraction (DSPE), and then combined with high performance liquid chromatography for simultaneous and accurate determination of AFB 1 and its two typical biosynthetic precursors with varied structures and polarity. The multipods and hierarchical pore structure as well as multifunctional groups endowed mp-PMO-IL(ph) 3 with excellent extraction recovery of above 90.6% and satisfactory extraction selectivity for three analytes from different cereals. Under optimal conditions, the developed method was validated and showed wide linearity of 0.9-120 ng g -1 (r 2 ≥ 0.9974) and low limits of detection of 0.18-0.30 ng g -1 . The recoveries of three analytes in seven cereal samples spiked at three different concentrations (1.0, 5.0 and 25.0 ng g -1 ) were 93.1% to 106.9% with relative standard deviations ≤ 6.9%. This study introduces a promising and novel approach for accurate determination of trace AFB 1 and its precursors in complex food matrix.
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