POLYMER DEGRADATION AND STABILITY
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2026
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IF 8.1
Zhenyin Guo,Chen Peng,Kang Zhu,Hongtao Li,Xianru He
A single-molecule intumescent flame-retardant (ABDP) was designed and synthesized for the intrinsic flame-retardant modification of ethylene vinyl acetate rubber (EVM). Through peroxide-initiated radical reactions, ABDP was covalently grafted onto the EVM molecular chain, constructing a P–N flame-retardant network. The mechanical, thermal and fire performances of the resulting composites were systematically investigated. The composite containing 16wt % ABDP (ABDP16) facilitated the formation of a continuous and highly graphitized intumescent char layer in the condensed phase, reducing the peak heat release rate (PHRR) and peak smoke production rate (PSPR) by 52.1 % and 46.1 %, respectively, while markedly enhancing thermal stability and tensile strength. After magnesium hydroxide (MH) was introduced, the EVM16 composite achieved a limiting oxygen index (LOI) of 30.7 % and a V-0 rating in the UL-94 test, with the PHRR and PSPR reduced by 77.2 % and 70.6 %, respectively. Moreover, its fire-growth index (FGI) decreased from 13.1 to 1.53 kW/(m 2 ·s). The metal oxides generated from the decomposition of MH were anchored within the char layer, yielding a compact, continuous barrier that effectively suppressed gaseous-fuel transport and heat diffusion. This work provides a feasible flame-retardant molecular-design strategy for developing highly efficient, durable and eco-friendly intrinsically flame-retardant EVM composites.
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MICROCHIMICA ACTA
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2026
·Vol. 193
·期 3
·146
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IF 5.4
Li Ruiwen,Shen Hao,Shi Dandan,Yu Shaoning,Qian Guoqing
An aptamer-gated metal-organic framework-based biosensing platform for highly sensitive detection of multidrug-resistant bacteria (MDRB) has been developed. This biosensing platform utilizes aptamers as specific “gated” switches, which are integrated with the UiO-66-NH₂ MOFs to construct a “gated” sensing system loaded with 3,3′,5,5′-tetramethylbenzidine (TMB). The entry of target bacteria induces specific dissociation of sDNA/Apt, forming an aptamer-bacteria complex on the UiO-66-NH₂ surface while releasing TMB into the solution. Subsequently, the PCN-224-Mn nanozyme catalyzes the oxidation of TMB, generating a colorimetric signal. This biosensing platform demonstrates a broad linear range for detecting New Delhi metallo-β-lactamase-1 Klebsiella pneumoniae (NDM-1 KP) and multidrug-resistant Acinetobacter baumannii (MDR-AB), achieving ultra-high sensitivity with detection limits of 5 CFU/mL and 7 CFU/mL, respectively. The practical performance of this biosensing platform was evaluated through spiked recovery experiments. Its excellent recovery demonstrates that the method maintains high reliability and stability even when applied to complex real-world samples, providing an effective technical solution for addressing challenges in microbial detection in practical scenarios. Graphical
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Journal of Future Foods
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2026
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IF 10.6
Qi Fang,Chunyin Qin,Ying Peng,Zhuoqi Xu,Daxiang Li,Shanshan Hu
Chronic low-grade inflammation (CLI) is a common pathological basis for many major diseases, whose systemic regulatory mechanism remains unclear. Based on Pu-erh tea’s potential to improve gut inflammation and dysfunction in the “gut-liver/brain” axis, this study systematically explored the multi-target regulatory mechanisms of Pu-erh tea through establishing a dextran sodium sulfate-induced CLI model. The results demonstrated that CLI triggered an inflammatory cascade in the colon, liver, and brain, accompanied by liver metabolism disorders (downregulation of FXR/SREBP-1c) and gut-brain barrier damage (downregulation of ZO-1/Occludin). Pu-erh tea significantly reversed these pathological changes by reshaping the gut microbiota (increased levels of norank_f__Muribaculaceae, Lactobacillus, Akkermansia , and Dubosiella ) and promoting the biosynthesis of short-chain fatty acids (SCFAs, butyric acid and isobutyric acid), which stemmed from improved mitochondrial dysfunction. The “gut microbes-SCFAs-mitochondria” axis may hold promise as a potential strategy for phytochemicals to improve body inflammation.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xincheng Li,Yaoyu Wang,Shaolong Yao,Shunlong Li
Utilizing the extreme water-repellent properties of superhydrophobic coatings to prevent steel structures from being affected by water-based corrosive agents is considered an effective strategy. Nevertheless, they are often prone to insufficient durability and environmental resistance, hindering their long-term anti-corrosion performance. Herein, a facile and cost-effective method is proposed to construct a durable superhydrophobic coating for steel structures. Specifically, the coating utilizes pure epoxy resin as the adhesive base layer, constructs an intermediate layer with irregular micron-scale protrusions by spraying an epoxy resin mixture with stearic acid-modified SiO 2 microparticles, and applies stearic acid-modified TiO 2 nanoparticles onto the surface of the intermediate layer. The coating features a multi-scale micro/nano structure with hierarchical roughness and low surface energy, demonstrating promising superhydrophobicity with a WCA of 161.4° and a WSA of 3°. Consequently, the coating exhibits excellent self-cleaning and anti-fouling properties. The coating exhibits excellent mechanical durability, maintaining its superhydrophobicity after undergoing 200 tape peeling cycles, 200 g of sand impact, 28 m of sandpaper abrasion, or 80 Taber abrasion cycles. Meanwhile, the coating demonstrates exceptional chemical stability by preserving its superhydrophobic properties during prolonged immersion in various corrosive solutions. More importantly, the superhydrophobicity of the coating and the enhanced barrier effect resulting from the synergistic interaction of its components endow it with superior corrosion resistance. Under simulated acid rain corrosion conditions, the coating exhibits remarkable corrosion inhibition efficiency, with long-term retention of anti-corrosion performance. In summary, this study provides an effective strategy for long-term corrosion protection of steel structures, showing potential for practical applications.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Jize Li,Xinqi Chen,Jing Li,Siyao Luo,Zhikun Wang,Yutong Xia,Wenting Wang,Yuetong Cao,Yifan Li,Zhongqi Zhu,Tianwei He,Yumin Zhang,Genlin Zhang,Zhishi Qiu,Qingju Liu
Covalent organic frameworks (COFs) have emerged as promising photocatalysts for hydrogen production due to their unique optical absorption properties, tunable electronic structures, high porosity, and large specific surface areas. However, practical applications of conventional COFs are limited by critical limitations, including rapid photogenerated carrier recombination and reliance on noble metal co-catalysts. In this study, we propose an innovative defect-control strategy: using 3,5-dimethylbenzaldehyde (DMBA) as a modulator to precisely regulate defect density in TpPa-1-COF materials, which significantly enhances the photocatalytic hydrogen production performance. Notably, the noble-metal-free 7% D-TpPa-1 sample with a tailored defect structure exhibits exceptional catalytic activity, achieving a hydrogen production rate of 1.71 mmol g −1 h −1 (32-fold higher than pristine TpPa-1 at 0.053 mmol g −1 h −1 ), and maintaining excellent cycling stability. Additionally, the photocatalyst demonstrates a maximum apparent quantum efficiency of 5.38% under 420 nm light illumination at 40 °C. Theoretical analysis reveals that the defects acting as electron-donating groups effectively promote the separation of photogenerated charges, while a shift of the conduction band potential to more negative values significantly enhances the reducing performance. This work provides a novel strategy for designing high-performance noble-metal-free COF photocatalysts, as well as a new way for efficient solar-to-hydrogen energy conversion.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Siqing Liu,Liping Chen,Xingju Li,Ruxi Lin,Yunxin Zhang,Xiaojun Luo
Background β 2 −agonists, also known as β 2 −adrenoceptor agonists, are secreted by the adrenal medulla of the animal body and have a characteristic catecholamine structure. When inhaled, the drug rapidly relaxes the smooth muscles of the airways in asthma patients, improves ventilation, and temporarily increases alertness during exercise and helps relieve fatigue. However, the use of β 2 −agonists to improve physical performance in a short period of time can lead to extreme dependence and irritation, and there are still many unknown hazards. They are now on the World Anti−Doping Organization (WADA) prohibited list. Results Surface−enhanced Raman spectroscopy (SERS) can directly detect the characteristic peaks associated with β 2 −agonist compounds in a fast and sensitive manner. This study is the first to utilize a direct Raman detection technique, achieving successful acquisition of the fingerprint spectra of three target analytes (vilanterol, fenoterol, bambuterol) as well as the establishment of a corresponding fingerprint spectral analysis method. To further improve its performance, in this study, gold nanoparticles were synthesized via redox methods and integrated with covalent organic framework (COF) to construct a novel highly sensitive detection platform for β 2 −agonists. The Au−COF composite exhibits high adsorption performance and can significantly enhance the SERS signal of the target, thereby achieving low detection limits, including 9.25 × 10 −6 g·mL −1 for bambuterol, 9.76 × 10 −6 g·mL −1 for vilanterol, and 7.54 × 10 −6 g·mL −1 for fenoterol, which makes it promising for improving the overall sensitivity of β 2 −agonist detection. Significance This study develops a novel analytical method utilizing Au−COF composites for highly sensitive SERS detection. It pioneers the application of this strategy in the qualitative and quantitative analysis of trace β2-agonists. The research not only significantly expands the scope of Au−COF composites but also provides a technologically promising approach with substantial practical value for ensuring medical safety through clinical medication monitoring and for detecting banned substances in sports.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Xianghai Li,Xiaxia Yang,Shiyu Yan,Xiangyue Liu,Gang Yang
In recent years, the synthesis of inorganic materials and their morphology–property relationships have emerged as prominent research topics in the field of materials chemistry. This study employed a hydrothermal method to synthesize γ-AlOOH nanorods and nanosheets, which were subsequently coated onto Celgard 2325 separators. The effects of different morphologies of γ-AlOOH coatings on separator performance were analyzed comparatively. Compared to the Celgard 2325 separator, the γ-AlOOH-coated separator exhibited enhanced properties, with the Celgard 2325-nanorod separator demonstrating the best results, achieving an electrolyte uptake of 190.8%, a thermal shrinkage rate of only 1.7% at 160 °C, and an ionic conductivity of 0.75 mS cm−1. The assembled battery maintained a discharge specific capacity of 107.8 mA h g−1 at a rate of 5C, and after 300 cycles at 1C, the capacity retention was 79.6%, significantly outperforming the Celgard 2325 separator (66.1%) and the Celgard 2325-nanosheet separator (71.4%). These results elucidate the mechanism by which the γ-AlOOH morphology regulates the structural and electrochemical properties of composite separators, offering valuable insight for the design of next-generation, high-performance lithium-ion battery separators.
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Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 2
·121498
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IF 7.5
Qi Jia,Ling Han,Yuqing Niu,Sen Yan,Jingli Zhang,Tao liu,Hui Zhang
This study addresses plastic pollution and climate change by converting waste polyethylene terephthalate (PET) bottles into carbon dioxide (CO 2 ) capture aerogels. Using recycled polyethylene terephthalate (rPET) and chitosan (CS) as raw materials, we prepared a hierarchical porous aerogel through sequential swelling, cross-linking, and freezing of porous nanofibers. The resulting aerogel contains macropores (>50 nm), mesopores (2–50 nm), and micropores (<2 nm). Its CO 2 adsorption abilities was achieved synergistic physical-chemical method after modification with triethylenetetramine (TETA). The designed hierarchical pore structure was meticulously governed by humidity, cross-linking. The optimized aerogel (rPET/CS-2-B) with 9.51 mmol/g amines achieved a high CO 2 uptake of 3.11 mmol/g at 273 K. Under simulated flue gas (15 % CO 2 / 85 % N 2 ), the best-performing sample achieved CO 2 adsorption capacities as high as 2.99 mmol/g under dry conditions and 4.10 mmol/g under humid conditions. This work offers a novel strategy for waste upcycling and designing hierarchical porous materials for carbon capture.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
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IF 4.1
Xu Qian-Yue,Xie Si-Yu,Wang Hai-Bo
Herein, a colorimetric and smartphone dual-channel sensor has been constructed for the sensitive detection of acetone based on a chemically driven redox-cycling reactive system. In the redox-cycling system, o -phenylenediamine (OPD) acted as the colorimetric substrate. Initially, colorless OPD was oxidized by Cu 2+ ions to generate Cu + ions and light yellow 2,3-diaminophenazine (DAP). The Fenton-like reaction between hydrogen peroxide (H 2 O 2 ) and generated Cu + ions initiated the production of Cu 2+ ions and hydroxyl radicals (·OH). The resulting ·OH and reproduced Cu 2+ ions could further catalyze other OPD molecules, leading to the formation of more light yellow DAP molecules, with a distinct ultraviolet absorption peak appearing at 440 nm. And this process continued until all OPD was completely consumed in the cycling reaction system. Interestingly, acetone was introduced into the redox-cycling system, leading to a colorless solution and a reduction of absorbance intensity at 440 nm. Based on this phenomenon, a colorimetric sensor with excellent sensitivity and selectivity has been designed for the visual detection of acetone. The sensor exhibited a linear correlation with acetone concentrations within the range of 2 μM to 5 mM, achieving a detection limit of 0.5 μM. Notably, RGB color space analysis was performed for the quantitative detection of acetone with the assistance of a smartphone. The results were in good agreement with the data obtained via UV-visible absorption spectroscopy. Furthermore, the strategy realized the rapid detection of acetone in real tap water, river water, and lake water samples. Graphical abstract
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POSTHARVEST BIOLOGY AND TECHNOLOGY
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2026
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IF 7.3
Renli Ai,Kai Yan,Changyu Shao,Longfeng Wei,Qinqin He,Junxian Chen,Qinyi Hu,Yao Wang,Zhu Li
The exploration of effective biocontrol agents and the characterization of their functional components are crucial for precisely preventing and managing carrot postharvest disease. Herein, Aspergillus niger xj was shown to effectively inhibit the bacterial soft-rot pathogen named Pectobacterium aroidearum , with the functional compounds primarily localized in the extracellular fermentation broth. Correlation analysis between the inhibitory activity and content of 5-hydroxymethyl-2-furancarboxylic acid (HMFCA) across 224 atmospheric and room-temperature plasma mutant strains and original strain xj indicated that HMFCA was an important inhibitory agent. The bioactivity of the bio-derived HMFCA isolated from the positive mutant strain 350–28 was validated through assays. In vitro inhibitory assays revealed that the half-maximal effective concentration (EC 50 ) of HMFCA against P. aroidearum was 1121 ± 8 μg mL −1 , with a minimum inhibitory concentration of 1.25 mg mL −1 and a minimum bactericidal concentration of 2.5 mg mL −1 . Moreover, HMFCA exhibited considerable potential to impede the growth of P. aroidearum . Furthermore, in vivo inhibitory assays indicated that HMFCA could assist carrot in resisting the infection caused by P. aroidearum within 24 h at three concentrations: EC 20 , EC 50 , and EC 80. However, the required effective concentration markedly increased at 48 h. These findings indicated that A. niger exhibited biocontrol activity through the extracellular secretion of active secondary metabolites, which directly suppressed the growth and reproduction of P. aroidearum . In particular, HMFCA was a functional compound, which offered a promising approach for the targeted postharvest management of carrot.
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Materials Today Bio
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2026
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IF 11
Feiyang Wang,Yue Wang,Jiaqi Sheng,Kewei Zhang,Yu Cao,Xiang Han,Ke Yan,Xiaoqian Wang
Periodontitis and diabetes mellitus exhibit a well-established bidirectional relationship, creating a hostile microenvironment characterized by persistent inflammation, oxidative stress, and impaired osteogenesis. Conventional guided tissue regeneration (GTR) membranes often yield suboptimal regenerative outcomes under these diabetic conditions due to their passive, monolithic structure. To address this limitation, we developed a novel dual-functional bilayer nanofibrous membrane, termed Pn@Janus TPP, through rational structural design specifically tailored for diabetic periodontitis. This Janus membrane features an anisotropic architecture: a dense barrier layer effectively blocks the infiltration of fast-proliferating soft tissue cells, while an opposite porous layer is functionalized with a polyethylene glycol (PEG) hydrogel incorporated with nano-hydroxyapatite (nHA) to enhance hydrophilicity, sustained Ca 2+ release, and osteoconductivity. Critically, the integration of tea polyphenol-functionalized graphene oxide (TPG) provides potent reactive oxygen species (ROS)-scavenging capacity, effectively mitigating the exacerbated oxidative stress characteristic of the diabetic periodontitis milieu. Under AGE (100 μg/mL) and LPS (100 ng/mL) conditions in vitro, the membrane significantly promoted the adhesion and osteogenic/cementogenic differentiation of bone marrow mesenchymal stem cells (BMSCs), while concurrently exhibiting potent ROS-scavenging capacity. In vivo, Pn@Janus TPP implantation markedly enhanced alveolar bone regeneration in a diabetic rat periodontitis model, restored periodontal architecture, and reduced the expression of key pro-inflammatory cytokines (IL-6, TNF-α, iNOS, IL-1β), without inducing systemic toxicity. Transcriptomic and molecular analyses revealed that the therapeutic effects were mediated, at least in part, through the suppression of the IL-17/TRAF-6/NF-κB signaling axis. The innovative Janus structure, combining spatially resolved physical barrier function with bioactive immunomodulation and osteogenesis promotion, positions Pn@Janus TPP as a promising advanced biomaterial for managing the complex regenerative demands of diabetic periodontitis.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Da Teng,Pengxiang Qiu,Yingying Xu,Chunjie Zhu,Xiu Zhang,Leyi Liu,Chen Wei,Yalin Yu,Ningxuan Xue,Xinyu Gai,Yiyang Chen,Siyue He,Guanjie Lin,Fengling Liu,Jiayu Gu,Shuai Zhang,Zhaobing Guo
Ferrate(VI) (Fe(VI)) is a powerful oxidant for wastewater treatment, but its use is hindered by electron transfer limitations. To address this, we designed a NiFe-layered double hydroxide-carbon nanotube (NiFe-LDH-CNT) hybrid photocatalyst. The design is based on the hypothesis that incorporating conductive CNTs can enhance interfacial charge-transfer capability, thereby promote Fe(VI) activation. Under visible light, this catalyst enhances Fe(VI) performance by facilitating the formation of reactive high-valent iron intermediates, accompanied by the generation of reactive oxygen species. Compared with pristine NiFe-LDH, the CNT-integrated composite exhibits improved charge separation and accelerated interfacial electron transport, resulting in enhanced pollutant degradation efficiency. In addition, the catalyst remains stable and effective over time, even in complex water environments. This approach offers a practical way to enhance Fe(VI)-based water treatment processes.
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