Nano-Micro Letters
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2026
·Vol. 18
·期 1
·171
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IF 36.3
Dai Xin-jian,Wang Xin,Hu Ji-hang,Jiang Pan,Wang Xiao-qing
Highly elastic, fatigue-resistant, and conductive lamellar wood sponges are developed via a cell wall reconfiguration strategy.
The strain-induced conductivity changes in lamellar wood sponge enable tunable electromagnetic interference shielding effectiveness and high-sensitivity pressure sensing (0.72 kPa −1 ).
The wood sponge exhibits a low through-plane thermal conductivity of 0.037 W m −1 K −1 , which is compression-tunable for smart thermal management.
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FOOD CHEMISTRY
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2026
·
IF 9.8
Run Ji,Hao Guo,Xu Yang,Lepei Wang,Xiuling Zhang,Hui Zhang
This study used chitosan (CS) and gelatin (GL) as base materials and employed emulsion encapsulation technology to prepare films with citrus essential oil (CEO) as an antimicrobial agent. The results showed that the CEO emulsion was uniformly distributed throughout the interior and surface of the film, promoting the formation of a thicker and rougher layered porous structure, which significantly improved the film's elongation at break and water resistance. Additionally, the addition of the CEO emulsion significantly improved the film's thermal stability, enhanced its UV resistance, antioxidant properties, and antibacterial performance. In practical applications, the CG/WO-7 % composite film inhibited the respiration of blueberries, reduced weight loss and nutrient loss, enhanced their antioxidant enzyme activity, and suppressed the excessive accumulation of ROS. Compared with the control group, the treatment with CG/WO-7 % film extended the shelf life of blueberries by 3 days, from 5 days to 8 days.
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JOURNAL OF CHROMATOGRAPHY A
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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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Materials Today Communications
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2026
·
IF 4.9
Xingcan Lu,Shuaijie Li,Zijian Feng,Xuan Wang,Ze Chen,Chaojun Yang,Songlin Chen,Shaoyang Liu,Yu Li
Epoxy resin-hollow glass microsphere composites (EHC) exhibit low density and excellent mechanical properties, making them promising candidates for marine/aerospace applications. However, their high flammability severely restricts broader use. To improve flame retardancy while maintaining low density, ammonium polyphosphate-coated hollow glass microspheres (APP-HGM) were utilized to fabricate flame-retardant epoxy composites (EAHC). EAHC achieved improved flame retardancy and maintained low density, but it suffered from insufficient flame-retardant efficiency and notable mechanical degradation. To address these drawbacks, SmMn 2 O 5 mullite nanoparticles (SMO) were further incorporated to fabricate the multi-component flame-retardant epoxy composite (SMO-EAHC). Systematic characterizations including thermogravimetric analysis (TG), limiting oxygen index (LOI), vertical burning (UL-94) and cone calorimeter test confirmed that APP-HGM serves as both a flame-retardant filler and a lightweight matrix component, while SMO catalyzes the decomposition of APP and promotes the formation of compact char layers. SMO-EAHC achieved a LOI of 27.6% and a UL-94 V-1 rating, and presented remarkable reductions of 58.81%, 38.67%, 73.65% and 62.96% in peak heat release rate (pHRR), total heat release (THR), peak smoke production rate (pSPR) and total smoke production (TSP) compared with unmodified EHC. Meanwhile, SMO-EAHC exhibited a compressive strength of 23.84 MPa, representing a 32.08% improvement relative to EAHC, while maintaining a low density of 0.66 g/cm³ . In summary, this work proposes a targeted two-step modification strategy, involving APP-HGM functionalization followed by SMO complementation, to address the flammability of EHC. This strategy realizes the balanced integration of flame retardancy, lightweight characteristic and pressure resistance, providing technical support for the application of polymer composites in extreme environments.
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Journal of Future Foods
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2026
·
IF 10.6
Danfei Liu,Yuyang Chen,Xiaoxuan Li,Wenxuan Zhou,Changfan Zhang
This study developed a multifunctional freshness indicator film based on black wolfberry anthocyanins (BWA) and a Houttuynia essential oil Pickering emulsion for monitoring pork freshness. The film was fabricated using a polyvinyl alcohol/guar gum blend system via a casting method, followed by screen-printing of a chitosan-stabilized Houttuynia essential oil Pickering emulsion onto its surface. The film showed improved mechanical strength (tensile strength up to 32.35 MPa) and ammonia-responsive color change from purplish-red to bluish-green during 4 °C pork storage, correlating with TVB-N (17.73 mg/100g) and TVC (5.98 lg CFU/g) by day 6. Structural analyses (SEM, FTIR, XRD) confirmed hydrogen bonding and enhanced film compactness. A ResNet18 model trained on 305 film images achieved 97.3% classification accuracy and was integrated into a PyQt5-based visual platform. This work integrates natural pigments, antibacterial Pickering emulsions, and deep learning for real-time meat freshness monitoring. However, the film's color stability under prolonged storage and its sensitivity to environmental humidity require further optimization. Future studies should focus on scaling up production and validating the system for diverse meat products under varying storage conditions.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
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2026
·
IF 4.7
Gao Yuxuan,Kong Qiyu,Wang Jun,Sun Fengwei,Liu Xinyu,Wang Deliang,Li Jiangao,Yang Zhen
Developing organic type I photosensitizers (PSs) that generate less oxygen-dependent reactive oxygen species (ROS) has long been recognized to be an appealing yet significantly challenging task in the field of photodynamic therapy (PDT), owing to the high oxygen dependency of conventional PDT, which impairs its overall therapeutic efficacy, particularly in hypoxic solid tumors. Herein, a molecular fluorination strategy to finely regulate PSs with bright near-infrared (NIR) fluorescence and superior type I ROS generation ability was exploited. Benefited from the improved donor-acceptor interaction, promoted intersystem crossing process, and increased spin-orbit coupling (SOC) constant, the optimal TIBT-5F simultaneously exhibits broad absorption with a larger molar extinction coefficient in the visible-light region, bright NIR fluorescence emission and stronger type I ROS generation efficiency, making TIBT-5F a promising candidate for precise NIR fluorescence-guided PDT. The as-prepared TIBT-5F nanoparticles (NPs) can quickly accumulate in the tumor site, effectively produce both type II and type I ROS and prominently suppress the tumor growth under a safe white light irradiation (40 mW/cm 2 ) with minimized systemic toxicity. This study thus offers a new insight into constructing advanced type I PSs for precise fluorescence imaging-guided tumor theranostics.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Tongfei Gao,Zhuangzhuang Dong,Jianhua Xiong,Hongxia Hao,Xiantao Shen,Wenge Tang,Zhen Tong,Chuixiu Huang
The widespread abuse of amphetamine-type stimulants (ATS) poses severe threats to public security and health, necessitating rapid and accurate on-site detection of ATS specially at crime scenes for criminal detection and illicit drug control. However, detection of complex samples at crime scenes by surface-enhanced Raman scattering (SERS) is still a challenge because of the matrix effect. Flat membrane-based liquid-phase microextraction (FM-LPME) enables efficient separation and sufficient sample clean-up. FM-LPME was used to overcome the matrix effect on SERS, and a sensing platform of FM-LPME-SERS was developed for rapid and accurate detection of ATS. The effect of key operation factors on FM-LPME performance was investigated. ENB and NPOE were identified as efficient supported liquid membrane solvent. For SERS, silver nanoparticles synthesized by sodium citrate reduction displayed superior enhancement in SERS signal, and the SERS signal for ATS could be further improved by sodium bromide. Finally, a quantitative model based on partial least squares regression was established to analyze the FM-LPME-SERS sensing data, which displayed satisfactory analytical performance for blood spot, urine, and wastewater samples with acceptable detection limit (0.011-0.570 μg mL -1 ), high repeatability (RSD ≤ 13%), and satisfactory accuracy (90-114%). This method was successfully applied to analyze wastewater samples from a drug production site provided by the Public Security Bureau in XX Province. Therefore, FM-LPME-SERS is a powerful tool for on-site detecting ATS in complex samples, which is of great importance for forensic science and public security. We believe this work will expand the applicability of SERS for complex samples.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Kun Zhang,Han Yan,Xiaoduo Chen,Zusen Chen,Xiaonan Feng,Ya Hu,Zheqian Chen,Xiaoyuan Guo,Chuanzi Gao,Yanzhou Bao,Jizhou Wu,Bintian Zhang
Cationic per- and polyfluoroalkyl substances (PFAS) are emerging environmental contaminants of growing concern, yet rapid and reliable sensing strategies remain scarce due to limited molecular selectivity and poor resistance to false-positive signals. Herein, we report a portable electrochemical sensor for perfluorooctane sulfonamide quaternary ammonium (PFOSAmS) based on a molecularly imprinted poly(4-hydroxybenzoic acid) membrane integrated onto a disposable screen-printed electrode. Molecular electrostatic potential analysis reveals strong anionic sites within the imprinted polymer that favor electrostatic attraction to the cationic headgroup of PFOSAmS, while the aromatic backbone provides hydrophobic domains complementary to the perfluorinated chain. The formation of imprinted cavities effectively enhances the selectivity for PFOSAmS over structurally related PFAS. Specific binding of PFOSAmS generates a dual electrochemical response, characterized by a decrease in probe current and a positive shift in redox potential, enabling intrinsic discrimination of false-positive signals. Nonspecific adsorption only reduces interfacial electron transfer without affecting the redox potential, whereas binding within the imprinted cavities disturbs the local electrostatic and dielectric environment, leading to a characteristic potential shift. Under optimized conditions, the sensor exhibits a detection range from 50 pM to 5 µM with a detection limit of 7 pM (5.1 ng/L). Selectivity evaluation against 20 potential interferents, including seven representative PFAS, confirms negligible influence. Practical detection of PFOSAmS in tap, bottled, and river water samples further demonstrates the robustness of the sensing platform. This work establishes a rapid, low-cost, and false-positive-resilient analytical tool for sensitive and accurate detection of cationic PFAS.
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MOLECULES
·
2026
·Vol. 31
·期 6
·
IF 5.1
Jichao Liu,Xiuzhuang Li,Jiaojiao Yu
Fluoroquinolones (FQs) are a kind of antibiotics, which are widely used in animal husbandry and aquaculture. However, the abuse of FQs can result in residues in foodstuffs of animal origin. Therefore, it is essential to establish a sensitive and accurate detection method for determination of FQs in food samples. An effective sample pretreatment method is a crucial procedure for enrichment of trace target compounds from complex matrix before HPLC analysis. As an emerging kind of sample pretreatment methods, magnetic solid-phase extraction (MSPE) has attracted much interest due to its characteristics including low cost, simplicity, and rapidity. In this study, a novel fluorinated magnetic covalent organic framework (Fe3O4@PDA@COF) was fabricated, which was used as an adsorbent in MSPE as well as coupled with HPLC to determine FQs in food samples. Under optimal conditions, the developed Fe3O4@PDA@COF-MSPE-HPLC-UV method possessed a wide linear range (1–250 µg·kg−1) and low limits of detection (0.5–0.7 µg·kg−1) with good linearity (R2≥ 0.9938). Additionally, the method has been used to adsorb FQs from chicken samples. The recoveries of target FQs in spiked samples were 84.2–106.7% with relative standard deviations (RSDs) below 7.8%. These results demonstrated that the established method provides an efficient and sensitive solution for monitoring FQ residues in foodstuffs.
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Lingya Fei,Xiaoting Ye,Jingyu Yu,Baoliang Chen,Xiaoying Zhu
Metal–organic frameworks (MOFs), with ultrahigh surface areas and tunable pore architectures, are promising for advanced separation membranes; however, despite advances in defect engineering for catalysis and adsorption, its potential in membrane separations remains largely unexplored. Here, we introduce a defect engineering strategy for the Zr-MOF MIP-202(Zr) through precise regulation of defect density. The defective MIP-202(Zr) was integrated with graphene oxide (GO) nanosheets via vacuum-assisted self-assembly to form hierarchical composite membranes. Notably, the defective composite membrane exhibited a two-fold increase in water permeability (up to 36.74 L m −2 h −1 bar −1 ) compared to the defect-free counterpart, while maintaining high rejection (>95%) for multiple model dyes, overcoming the conventional permeability–selectivity trade-off. The introduced defects created open sites and enhanced mass transport, collectively improving membrane hydrophilicity and water permeability. This work demonstrates defect engineering as a transformative strategy for designing high-efficiency MOF-based membranes, with significant implications for sustainable wastewater treatment and resource recovery.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Sijia Sun,Dong Jiang,Hengsong Zheng,Ziyuan Cheng,Jie Wang,Yusuke Yamauchi,Mingzhu Pan
Rational structural design is crucial for enhancing thermal conversion efficiency and is therefore essential for advanced thermal-management applications. However, simultaneously achieving high electrical conductivity and low thermal conductivity in thermoelectric (TE) materials through oriented structural design remains a long-standing challenge. Herein, a PEDOT: PSS/MXene-based TE unit is fabricated via a top-down strategy using oriented wood cellulose fibrils as a natural scaffold. The inherent long-range alignment of cellulose fibrils enables the formation of a continuous, directionally conductive network that facilitates the rapid transport of thermally excited charge carriers, leading to remarkably high electrical conductivity. Meanwhile, the hierarchical micro/nanopores (0.1–50 μm) derived from the cellulose framework induce strong phonon scattering, resulting in ultralow thermal conductivity and pronounced temperature gradients under heat stimuli. Subsequently, the TE unit exhibits an excellent Seebeck coefficient (10.051 μV K −1 ), high electrical conductivity (1776 S m −1 ) at elevated temperatures, and a sufficiently low thermal conductivity (0.032 W m −1 K −1 ). When coupled in series with an n- type MXene unit, the resulting self-powered high-temperature warning device demonstrates a broad sensing range (100–400 °C) and a rapid thermal response (~1.3 s). This oriented structural framework, derived from rational design principles, offers scalability for integration with diverse thermal conversion composites, providing new insights into the design of advanced functional architectures for practical thermal management and self-powered sensing applications.
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HYDROMETALLURGY
·
2026
·
IF 6.3
Huazhen Cao,Canjiang Li,Junfeng Kong,Lining Yu,Anyang Tang,Jingnan Zheng,Zhengzheng Liu,Huibin Zhang,Guoqu Zheng
Zinc vacuum smelting slag contains valuable metals, including gallium (Ga), germanium (Ge), and indium (In). However, their highly dispersed distribution presents significant challenges for efficient recovery. This study developed a sustainable stepwise leaching strategy, combining sulfuric acid (H 2 SO 4 ) leaching with acetic acid (HAc) leaching, for the efficient recovery of Ga, Ge, and In from refractory zinc vacuum smelting slag. The complex occurrence states of Ga, Ge, and In in the slag and their transformation behaviors during leaching behaviors were systematically investigated. During H 2 SO 4 leaching, zinc (Zn) recovery reached up to 96.3% under optimal conditions, while the valuable metals (Ga, Ge, and In) became enriched in the H 2 SO 4 post-leach residues. The enrichment mechanism of Ga, Ge, and In in the post-leach residues was elucidated and found to involve hydrolysis and replacement processes. Subsequently, the H 2 SO 4 post-leach residues were treated with HAc to recover Ga, Ge, and In, achieving recoveries of 83.3%, 91.2%, and 91.4%, respectively. Through a cyclic leaching process (five cycles), the concentrations of Ga, Ge, and In in solution were increased to 0.72 g/L, 5.14 g/L, and 2.71 g/L, respectively. This green and efficient process offers a technically feasible and environmentally benign strategy for recovering valuable metals from secondary resources, thereby promoting resource circularity and waste valorization in the zinc industry.
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危险品化学品经营许可证（带存储）