JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Shumin Li,Wenjun Su,Zeyang Di,Suyue Zhong,Junjie Ma,Jian Li
Membrane separation has emerged as a competitive energy-efficient approach for carbon capture and flue gas treatment. Membrane materials and structures are the core of gas separation membranes, which collectively govern gas molecular mass transfer and separation behaviors. Two-dimensional (2D) graphene oxide (GO) porous nanosheets hold great promise for gas separation due to their nanoscale thickness and structural tunability, but they are often limited by low permeability. Herein, we propose a supramolecular strategy to fabricate ZIF-L/GO/Pebax mixed matrix membranes with intercalated network architectures for efficient CO 2 /N 2 separation. Leaf-like ZIF-L expands the interlayer spacing of GO nanosheets and constructs high-speed continuous gas transport pathways within the membrane. This unique intercalated structure provides abundant CO 2 -philic sites, significantly enhancing CO 2 solubility and enabling highly selective gas molecular sieving. Moreover, hydrogen bonds and chelation coordination interactions between ZIF-L/GO and polymer matrix ensure excellent interfacial compatibility while reinforcing structural stability. This supramolecular structural engineering approach effectively mitigates the limitations of traditional membranes, achieving CO 2 permeability of 1000.8 Barrer and CO 2 /N 2 selectivity of 45, exceeding the 2008 Robeson upper bound and approaching the 2019 limit. Additionally, the membrane displays superior mechanical properties and long-term operational stability, providing a promising avenue toward high-performance materials for efficient CO 2 capture.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Nano
·
2026
·
IF 7.6
Hao Chen,Liang Li,Xuefang Lu,Shunze Huang,Man Xia,Jianzhong Xu,Xiwei Lai,Zewenhui Zhang,Xin Qian,Tianyu Xu,Feng Huang,Richeng Lin
Ultrathin scintillators are key components of high-spatial-resolution X-ray detectors in medical imaging, high-precision nondestructive inspection, and high-energy physics. Currently, the spatial resolution of X-ray imaging detector generally is enabled by high-light-yield scintillators with minimal optical scattering. However, suppressing optical scattering losses typically require the scintillation layers thinner than a few tens of micrometers, which is difficult to obtain through conventional top-down mechanical thinning. Here, a bottom-up method that rapidly growing inch-sized, Eu 3+ /Tb 3+ doped lanthanide oxychloride (LaOCl) films via chemical vapor deposition (CVD) is proposed to obtain large-area ultrathin scintillators. The doping Eu 3+ /Tb 3+ ions act as luminescent activators and provide strong red and green scintillation through efficient f-f intra-configurational transitions, which are shielded from the host lattice by the outer 5s 2 5p 6 electron shells, resulting in sharp emission lines and high quantum efficiency. The layered crystal structure of LaOCl further facilitates anisotropic growth, enabling precise control of film thickness from a few atomic layers up to the micrometer scale. The growing LaOCl:Eu 3+ film with thickness of approximately 30 μm shows a photoluminescence quantum yield (PLQY) of 99.3%, and demonstrating an ultralow X-ray dose-rate detection limit of 143.41 nGy s −1 , owing to efficient energy transfer from the LaOCl host to the activator ions. Furthermore, the growing LaOCl:Eu 3+ /Tb 3+ films exhibit excellent linear response and radiation hardness under X-ray exposure, retaining above 95% of their initial intensity after prolonged cyclic irradiation at 27.8 μGy s −1 for 24,000 s. These results demonstrate CVD-grown LaOCl:Ln films as a promising platform for high-resolution and low-dose X-ray imaging detection. An ultrathin scintillator film is fabricated via an unconventional bottom-up chemical vapor deposition–driven evaporation growth method. The oriented attachment and layer-by-layer stacking of LaOCl:Ln 3+ crystal nuclei enables the fabrication of centimeter-scale ultrathin films with controllable thickness. The doping Eu 3+ and Tb 3+ act as luminescent activators, generating intense red and green emissions through efficient 4f-4f intra-configurational transitions. Owing to the effective shielding of the outer 5s 2 5p 6 electron shells, these transitions exhibit sharp emission lines and exceptionally high quantum efficiency. For LaOCl:Eu 3+ films with a thickness of approximately 30 μm, the photoluminescence quantum yields achieves a near unit of 99.3%, demonstrating an ultralow X-ray detection limits of 143.41 nGy s −1 and outstanding radiation stability. Download: Download high-res image (333KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Food Bioscience
·
2026
·
IF 6.2
Zhongqin Li,Jiazhen Shi,Yinghua Song,Yue Tang,Lian Xia,Yuangen Wu
Butylated hydroxyanisole (BHA) is a synthetic phenolic antioxidant widely used in edible oils and fat-containing foods. Excessive BHA poses significant risks to human health, thus making rapid and sensitive detection of BHA crucial for health protection. Herein, the Ag 2 CO 3 nanozyme was prepared by the simple precipitation method, which exhibits both laccase-mimic and oxidase-mimic activities. It was found that the oxidase-mimic activity of Ag 2 CO 3 facilitated the conversion of TMB to its blue oxidized form (oxTMB), and subsequent addition of BHA resulted in the formation of a characteristic purple adduct. Additionally, BHA effectively suppressed the laccase-mimic activity of the Ag 2 CO 3 nanozymes. Therefore, a novel colorimetric sensor was constructed using the dual-enzyme-mimic activities as a sensing signal for rapidly detecting BHA in edible oil. The colorimetric sensor achieves limits of detection (LOD) for BHA as low as 1.1 μM in the laccase-mimic channel and 0.08 mM in the oxidase-mimic channel, both of which are substantially lower than the maximum permissible BHA level in edible oils stipulated in Chinese National Food Safety Standard GB 2760. The sensor developed in this work shows great promise for application in the field of edible oil detection.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Minghong Dai,Yafang Chen,Peng Wang,Dianming Chu,Zhaoying Li,Wenjuan Bai,Yan He
Coalescence induced by the dynamic evolution of catalysts under catalytic environments has long been a challenge in the growth of carbon nanotubes (CNTs). Herein, this study reports a catalyst "hijacking" strategy, which leverages the time-dependent difference during the crystalline-to-amorphous transformation of catalysts to activate the catalytic activity of small-sized crystalline nanoparticles, preventing their coarsening via Ostwald ripening. Simultaneously, the retained nanoparticles exhibit higher density and optimized electronic structures, extending the catalytic lifetime. The successful synthesis of the catalyst relies on the efficient utilization of Mo in open cavities, where the isolated open cavities restrict excessive coalescence of the active components, and the doping of Mo atoms induces the transformation of the active components from amorphous to crystalline. In this structure, the semi-confined space, surface negative charge, and affinity to solvents facilitate the formation of small-sized NPs by isolating and dispersing metal ions. Meanwhile, Fe-Mo bonds significantly prolong the length of CNTs. The combination of Fe and Mo promotes gradual crystallization of NPs, suppresses excessive coalescence of the active components, and optimizes the adsorption energy of C 3 H 6 , thereby extending the catalyst lifetime. Additionally, the bonding between Mo and C atoms favors bulk diffusion of C within Fe NPs, avoiding excessive C deposition inside the NPs and enhancing structural stability. As a result, the CNTs grown with this catalyst exhibit a small tube diameter as low as 5.68 nm and a high ratio (M product /M catalyst ≈14), demonstrating promising application prospects. Download: Download high-res image (212KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2026
·
IF 7.4
Ziyi Wang,Fenglong Chen,Wei Fan,Yuzhe Guo,Yingnuo Liu,Jiaxin Li,Litao Tian,Rui Lu,Yulun Xie,Jingmei Xu
The composite membranes were fabricated using electrospinning technology. • 1/SPCeS/1 showed the highest proton conductivity (224.27 mS cm −1 at 90 °C). • 1/SPCeS/1 showed good mechanical properties and oxidation stability. In this work, sulfonated poly (arylene ether ketone sulfone) (SPAEKS) polymers were prepared via condensation polymerization, and sulfonated dopamine-modified cerium oxide (SPD@CeO 2 ) nanoparticles were integrated into the polymer matrix. An array of composite membranes was fabricated using electrospinning. The fillers and composite membranes were analyzed through various characterization methods. The obtained 1/SPCeS/1 (with 1 wt% SPD@CeO 2 added to the spinning solution) fiber composite membrane exhibited good performance. With the intrinsic free radical scavenging effect of CeO 2 and the synergistic effect of sulfonated dopamine, the oxidative stability of 1/SPCeS/1 reached 97.65%, the proton conductivity was 224.27 mS cm −1 (90 °C, 100% RH), and the peak power density reached 794.92 mW cm −2 , which were all verified to be superior to the corresponding values of the pure membrane. The results indicated that the combination of functional nanoparticles and electrospinning technology effectively enhanced the overall performance of the proton exchange membrane. This strategy fully aligns with the core principles of green chemistry, namely using low-toxicity raw materials, adopting mild and energy-saving preparation routes, reducing harmful organic solvents, and providing a sustainable and environmentally friendly alternative to conventional perfluorinated proton exchange membranes. Download: Download high-res image (305KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
OPTICS COMMUNICATIONS
·
2026
·
IF 2.7
Haiyu Tian,Haidong Qi,Yongjun Zhang,Yaxin Wang,Xiaoyu Zhao,Renxian Gao
Surface-enhanced Raman scattering (SERS) is a powerful surface analysis technique that significantly amplifies the Raman scattering signals of molecules adsorbed onto metallic nanostructures, enabling highly sensitive detection of the analytes. The development of low-cost, high-performance SERS substrates through facile and straightforward fabrication methods represents a challenging and highly rewarding endeavor. Here, we develop a suspended sandwich Ag/SiO 2 /Ag nanopore array structure based on template-assisted method with significant plasma coupling effects, which shows an ultra-low detection limit (LOD of 2.91 × 10 −11 mol/L) for 4-MBA molecules, excellent sensitivity (EF = 5.76 × 10 8 ) and high uniformity and stability. COMSOL simulation confirms the electromagnetic coupling in the sandwich structure in addition to the hotspots along the nanopore brims. The proposed SERS substrate enables quantitative detection of glyphosate with the concentration down to 4.66 × 10 −9 mol/L and fulfills the requirements for monitoring pesticide residues.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Building Engineering
·
2026
·
IF 8.1
Zhaoyang Sun,Cuiyi Chen,Bin Xu,Zixuan Yang,Binmeng Chen
Four HPMC samples are synthesized with molecular weight ranging from 35 to 450 kDa. • Long-chain HPMC causes τ s to peak then drop, while τ d rises monotonically. • Longer-chain HPMC enhances flocculation but deteriorates floc structure. • τ s is governed by competing polymer-bridging and steric-hindrance effects. • τ d increases with HPMC dosage and chain length via stronger polymer interactions. Hydroxypropyl methylcellulose (HPMC), one of the most commonly used viscosity-modifying admixtures (VMAs), is extensively employed in fresh cement-based materials. Indeed, the chain length of HPMC greatly influences the rheological behavior of cement pastes. Here, four HPMC samples with distinct molecular weights ( M w ) from 35 to 450 kDa were chemically synthesized to systematically elucidate how chain length governs the rheology of cement pastes and to reveal the underlying mechanisms. Results show that HPMC with shorter chains (H1, H2, and H3 with M w < 220 kDa) induces a monotonic increase in both τ s and τ d with increasing dosage. In contrast, long-chain HPMC (H4 with M w = 450 kDa) causes τ s to rise from 29 to 114 Pa and then decrease beyond 0.3%, reaching 59 Pa at 0.5%, while τ d continues to increase from 45 to 148 Pa. This divergence in τ s suggests a dual role of adsorbed HPMC: longer chains (H4) may simultaneously intensify interparticle attraction through polymer bridging and enlarge particle separation via steric hindrance, the latter eventually overriding the former at higher dosages. The continuous increase in τ d is attributed to the strengthened polymer-polymer interactions with increasing chain length and concentration, promoting the formation of a more rigid polymer network in the interstitial solution that resists applied shear stress. Overall, this work establishes a systematic mechanistic framework describing how HPMC chain length modulates the rheology of cement paste.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Ruimin Wang,Changkun Ding,Yu Zhang,Jing Li,Yutong Liu
Collagen is an ideal raw material for biological fibers, yet achieving long-range structural order and the resultant high-strength fibers without toxic crosslinkers remains a major challenge. This work integrates ultrasonic fragmentation with dialysis concentration to induce a stable lyotropic liquid crystalline (LC) collagen dope at a concentration as low as 3.3%, which is significantly lower than previously reported. Ultrasonic treatment reduced collagen fragment length to 10–30 nm, lowering steric hindrance and enhancing molecular mobility, thereby promoting nematic LC formation. Rheological analysis revealed that at 3.7%, the spinning dope exhibited a characteristic viscosity plateau in the low shear rate range of 1–5 s −1 , indicating shear-induced alignment of nematic LC domains, which defines the optimal spinning window. Using 4.0% LC dope and an optimized ethanol flow rate of 0.30 mL/min in microfluidic spinning process, the resultant collagen fibers achieved a high tensile strength of 2.21 cN/dtex and a thermal denaturation temperature of 120.8 °C. Increasing the spinning dope concentration progressively reduced lateral molecular packing distance, transformed the fiber surface from grooved to smooth, and enhanced thermal stability. This study establishes a rational, crosslinker-free strategy to fabricate high-performance pure collagen fibers with superior mechanical and thermal properties, providing critical theoretical and technical support for their application in absorbable surgical sutures and regenerative medicine. Download: Download high-res image (219KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2026
·Vol. 15
·期 16
·2829
·
IF 6
Jianchao Deng,Tianyu Chen,Jin Huang,Chunsheng Li,Xiao Hu,Xue Zhao,Yanyan Wu,Shengjun Chen,Yongqiang Zhao
The quality of yellowfin tuna is highly vulnerable to microbial proliferation, which accelerates quality deterioration and spoilage throughout storage. In this study, the dynamic changes in biogenic amines (BAs), total volatile basic nitrogen (TVB-N), and total plate count (TPC) across a different storage temperature range of 0 to 25 °C were studied, followed by a shelf-life prediction based on kinetic models. The TPC, TVB-N, and most BAs increased significantly with increasing storage time and temperature. Correlation analysis was used as an exploratory approach and showed that only histamine and cadaverine exhibited significantly positive correlations (|r| ≥ 0.6,p< 0.05) with TPC and TVB-N within the present dataset. Histamine was selected as a candidate BA indicator for kinetic modeling because only this BA changed significantly during storage at different temperatures. Utilizing histamine, TPC, and TVB-N, preliminary kinetic equations for shelf-life estimation were developed using first-order kinetics and the Arrhenius equation. Among the tested indicators, TPC showed relatively greater temperature sensitivity and preliminary within-batch agreement. These results provide preliminary reference data for further validation of tuna during the refrigeration process.
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2026
·Vol. 16
·期 8
·725
·
IF 4.5
Hongtao Xie,Limi Yan,Shijian Lu,Pengcheng Xiang,Dongliang Liu,Lili Wang
The electrocatalytic reduction of CO2into value-added chemicals offers a promising route to mitigate greenhouse gas emissions, yet the uncontrollable structural reconstruction and surface rearrangement of electrocatalysts during operation often lead to severe activity degradation. Herein, we reveal that Bi2O2SO4(BSO) undergoes an irreversible phase transformation into Bi2O2CO3(BCO) nanosheets accompanied by the partial reduction of Bi3+to metallic Bi0under cathodic potentials. A series of BCO/BSO heterojunction catalysts with tunable compositions are synthesized via a mild in situ ion-exchange method. To circumvent the detrimental effects of this dynamic reconstruction, we devise a pre-activation strategy that deliberately completes the structural evolution prior to electrocatalysis. The optimized 20%-BCO/BSO heterojunction achieves a remarkable Faradaic efficiency of 98.4% for formate production in a flow cell at elevated potentials, with >95% FE(HCOOH)over a wide potential window (−0.8 to −1.7 V vs. RHE). In situ infrared spectroscopy elucidates that the reconstructed interface can promote CO2adsorption, stabilize the *OCHO intermediate, and facilitate HCOOH desorption. This work provides experimental evidence of the reconstruction behaviour of bismuth-based catalysts and offers a rational design method for constructing structurally stable heterojunction electrocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Chenxuan Ai,Xueli Yang
MOF-derived ZnO and Au-ZnO materials were synthesized via a coprecipitation method. • The response value of 0.5 wt% Au-ZnO to 100 ppm n-butanol is 649.77 at 250 °C. • Response time is just one second, enabling real-time detection of n-butanol. • This sensor has a low detectable concentration, excellent selectivity and stability. N-butanol is a flammable volatile organic compound (VOCs) posing potential threats to human health and environmental quality, making its real-time detection critically important. Although Au-functionalized MOF-derived ZnO has been investigated for gas sensing, the influence of Au loading on surface-defect regulation and n-butanol sensing behavior remains insufficiently understood. Herein, porous ZnO rhombic dodecahedra derived from ZIF-8 were functionalized with controlled Au loadings of 0.25, 0.5, and 0.75 wt%. The optimized 0.5 wt% Au-ZnO sensor exhibited a response of 649.77 and a response time of 1 s towards 100 ppm n-butanol at 250 °C, with the response being approximately 3.6 times that of pristine ZnO. A measurable response of 1.41 was obtained at 50 ppb, representing the lowest experimentally verified concentration in this study. The sensor also demonstrated good selectivity, repeatability, and long-term stability. XPS analysis showed that the 0.5 wt% Au-ZnO sample possessed the highest relative oxygen-vacancy content of 34.8%. DFT calculations further suggested a stronger adsorption tendency of n-butanol on the Au-ZnO surface than on pristine ZnO. These results demonstrate that controlled Au loading provides a favorable balance among interfacial charge modulation, oxygen-vacancy regulation, catalytic activity, and adsorption-desorption kinetics. The dodecahedral structure of the MOF-derived ZnO confers high sensitivity to n-butanol on the sensor, providing uniform anchoring sites for gold nanoparticles (Au NPs). Through Schottky barrier modulation, catalytic effects and oxygen vacancy enhancement, the modification with Au NPs further improves the capture efficiency and signal amplification for n-butanol concentrations in the ppb range. Download: Download high-res image (231KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2026
·
IF 12.7
Jiale Ma,Ying Huang,Hanjie Huang,Meng Zong
The as-prepared N-doped porous carbon microwave absorption material derived from Zn-benzimidazole (Zn-BIM) exhibits excellent electromagnetic wave absorption performance, achieving a minimum reflection loss (RL m ᵢ n ) of −57.33 dB with an effective absorption bandwidth (EAB) of 8.72 GHz at a matching thickness of only 2.41 mm. • The effects of Zn 2+ /BIM molar ratio and concentrated NH 3 ·H 2 O dosage on the microstructure and electromagnetic wave absorption performance of Zn-BIM derived carbon are systematically investigated. • The ethanol solvent and strong alkaline conditions facilitate the formation of low-crystallinity Zn-BIM frameworks with abundant defects. Such structure endows the material with abundant defect sites, heterogeneous interfaces and porous structures, thereby enhance its electromagnetic wave absorption capability. • After high-temperature pyrolysis, the Zn-BIM derived N-doped porous carbon effectively optimizes impedance matching and strengthens dielectric loss, realizing synergistic regulation of microwave absorption performance through impedance matching, dipole polarization, interfacial polarization and conductive loss. With the rapid proliferation of electronic devices and microwave communication technologies, severe electromagnetic interference (EMI) and electromagnetic radiation pollution have become pressing issues, urgently requiring the development of high-efficiency microwave absorbers with broad bandwidth and strong attenuation capability. Metal-organic frameworks (MOFs)-derived carbon materials have emerged as promising candidates for advanced microwave absorption by virtue of their tunable morphology, large specific surface area, and controllable heteroatom doping. Herein, hierarchical N-doped porous carbon microwave absorbers were successfully fabricated via a facile ethanol-mediated solvothermal route combined with high-temperature pyrolysis, using a Zn-benzimidazole (Zn-BIM) coordination polymer as the precursor, while concentrated NH 3 ·H 2 O served simultaneously as the alkaline regulator and N source. The microstructure, carbon defect density, and microwave absorption performance were systematically optimized by modulating the Zn/BIM molar ratio and NH 3 ·H 2 O dosage. The optimized sample delivered exceptional microwave absorption performance at a Zn/BIM molar ratio of 1:2 and NH 3 ·H 2 O dosage of 9 mL, achieving a minimum reflection loss (RL min ) of −57.33 dB at 2.41 mm and a broad effective absorption bandwidth (EAB) up to 8.72 GHz, well satisfying the requirements of practical electromagnetic protection applications. The superior absorption performance originates from the synergistic contribution of optimized impedance matching, conductive loss, dipole polarization, and abundant interfacial polarization induced by the hierarchical porous structure and N-doping. This facile and eco-friendly strategy provides a feasible reference for the rational design of high-efficiency microwave absorbers toward 5G/6G electromagnetic protection, aerospace radar stealth, and precision electronic device interference shielding. In this work, N-doped porous carbon materials were fabricated via high-temperature pyrolysis of Zn-BIM coordination polymers, using ethanol as the solvent and concentrated NH 3 ·H 2 O as the alkali source. The molar ratio of Zn 2+ to BIM ligand and the dosage of NH 3 ·H 2 O were systematically regulated. Experimental results reveal that the as-prepared material delivers excellent microwave absorption performance. When the molar ratio of Zn 2+ to BIM ligand is 1:2 and the NH 3 ·H 2 O dosage of 9 mL. Its minimum reflection loss (RL m ᵢ n ) reaches −57.33 dB, and the effective absorption bandwidth is up to 8.72 GHz. The superior absorption performance originates from the synergistic effect of multiple scattering induced by the structure defects. This work provides a new strategy to design lightweight microwave absorbers with strong absorption and broad bandwidth. Download: Download high-res image (417KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）