SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Hua Zhang,Zhenxin Wu,Tianhua Ren,Fanli Meng
When utilizing metal oxide semiconductor (MOS) sensors for gas mixtures detection, challenges such as low detection accuracy and susceptibility to interference from ambient humidity often arise. This research presents a method for effectively identifying gas mixtures in the presence of humidity interference. Using a single commercial sensor MQ3, dynamic response data for methanol-ethanol mixture was collected across various relative humidity levels through dynamic temperature modulation. Dynamic temperature modulation allows the sensor response to be extended in the time domain to include both gas concentration and humidity information. The linear discriminant analysis (LDA) method was used to suppress the humidity interference in the response, and the gas concentration information was retained to the greatest extent. Subsequently, the data was transformed into a two-dimensional matrix using the gramian angular field (GAF) algorithm, which was then fed into the self-developed multi-head feature extraction convolutional neural network (MFE-CNN) for concentration prediction. Experimental results demonstrate that this approach effectively reduces the impact of humidity interference, outperforming other control strategies. This method is anticipated to serve as a novel strategy for the detection of gas mixtures in the presence of humidity interference.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Yong Zhu,Fengyan Chen,Bingmin Wu,Yishan Tong,Kunbo Ning,Zhiyuan Zhen,Jihang Chen
Polysaccharide-based supramolecular self-assembled hydrogels are promising biomaterials owing to their biocompatibility and dynamic controllability. This study was to explore the use of a polysaccharide (PSP) isolated from a well-known Chinese herb, Polygonatum sibiricum Red. (Huangjing) in the supramolecular self-assembled hydrogel. PSP was characterized as a neutral fructan with a backbone of →1)-β-D-Fru f -(2 → and →1,6)-β-D-Fru f -(2 → units bearing O-6–substituted branches. PSP/Chitosan (PSP/CS) hydrogels were prepared with different PSP concentrations (4, 6, 8, 10, 12 wt%), forming 3D network porous structure composed of nanofiber chains, with the pore size ranging from 0.67 to 13.67 μm. Increasing PSP content markedly enhanced gel strength and stability, as evidenced by higher storage modulus (G'), increased compressive modulus (0.03–0.75 kPa), and improved thermal stability (maximum degradation-rate temperature from 290 to 302 °C). In addition, PSP/CS hydrogels exhibited high swelling (2673 ± 65%) and water retention (78.26 ± 1.58%) properties. Hydrogen bonding was the predominant driving force for self-assembly. Furthermore, PSP/CS hydrogel preliminarily showed good cytocompatibility toward Caco-2 cells. In conclusion, these findings clarify the structure–assembly–property relationships of PSP/CS hydrogel and suggest a design strategy for exploiting fructan polysaccharides in advanced biomaterials.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Nuo Xu,Jiachen Li,Xinru Zhang,Qian Liu,Minman Tong,Liangliang Dong,Hong Meng,Lijun Liang
Two-dimensional (2D) metal-organic framework (MOF) materials with ultrathin layers, uniform micropores, and extraordinary physicochemical properties exhibit unique mass transport behaviours, enabling them as emerging building blocks for fabricating mixed matrix membranes (MMMs) for hydrogen purification. However, because of the low loading and disordered orientation of 2D MOF materials, high-performance transport paths are often blocked by multisegment polymer matrices, resulting in undesirable hydrogen separation performance. Herein, we report a spin-coating technique for fabricating highly oriented ZIF-7@polybenzimidazole (PBI) MMMs with an ultrahigh 80 wt% of ZIF-7 loading. Through the synergetic manipulation of the spin-coating speed, size, and dispersion of ZIF-7 plates, a high-density distribution of oriented and selective ZIF-7 nanochannels was constructed, enabling the preferential transport of hydrogen molecules. Compared with traditional MMMs with random orientations, the highly oriented ZIF-7@PBI MMM achieved a H 2 permeability of 4505 Barrer and H 2 /CO 2 selectivity of 18.7, surpassing the performance of existing membranes by 8 to 800 times. This study offers great potential for maximising the performance of oriented membranes and provides a viable pathway for developing high-efficiency membranes for various gas separation applications.
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Haiyang Shao,Chen Wang,Miaomiao Zheng,Yafei Cheng,Lihai Fan,Haiyang Yan,Xiaocheng Lin
To advance industrial acid recovery via diffusion dialysis, the crucial step is to engineer anion exchange membranes (AEMs) with superior acid permeability and selectivity. Herein, a PIM-1-based AEM was fabricated via liquid bromine-induced bromination followed by a non-crosslinking alkylation with 1-methylimidazole, which preserves the rigid polymer backbone and intrinsic microporosity. The optimized, mechanically robust membrane exhibited a specific surface area of 549 ± 18 m 2 g −1 , providing abundant free volume for rapid proton transport, and a pore size distribution precisely centered between 0.40 and 0.75 nm, enabling selective acid recovery via size sieving in a typical HCl/FeCl 2 wastewater system. This membrane achieved a proton dialysis coefficient of 59.4 ± 4.3 × 10 −3 m h −1 and a selectivity of 74.4 ± 2.7 over Fe 2+ , outperforming the commercial DF-120 AEM by sevenfold and fourfold, respectively. This work provides a scalable, non-crosslinking functionalization route to fabricate mechanically robust AEMs from PIMs, leveraging their preserved microporosity for efficient and selective acid recovery.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
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IF 19.9
Mengjia Shi,Zirui Jia,Shuang Xu,Zhenguo Gao,Guanglei Wu
Constructing heterogeneous structures to precisely regulate the interface characteristics and loss mechanisms of materials is the key to performance improvement. This study proposes a strategy of constructing the NiS 2 -CdS P-N heterojunction with Porous carbon nanofibers (PCNFs) as the supporting skeleton, and deeply investigates the influence of the interface regulation mechanism of the P-N heterojunction on the absorption performance. The study clarified the structural reconstruction information such as bond parameter distortion, atomic occupation deviation, and lattice disorder caused by the Built-in electric field (BIEF) of the P-N heterojunction through X-Ray Diffraction (XRD) refinement. With the help of Density functional theory (DFT) calculation, the performance regulation mechanism of the heterojunction was revealed at the atomic/electronic scale. A carrier migration model between NiS 2 and CdS was constructed, and the absorption mechanism was analyzed. By utilizing the BIEF and space charge region formed by NiS 2 and CdS, the equivalent impedance is regulated. Ultimately, the cooperative optimization of material impedance matching and energy dissipation is achieved, providing new ideas and development of high-performance electromagnetic wave (EMW) absorbing materials. This research provides theoretical support for the subsequent shift of absorbing materials from empirical synthesis to precise design.
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BIOMEDICAL CHROMATOGRAPHY
·
2026
·Vol. 40
·期 3
·e70382
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IF 1.7
Linghao Zhao,Wei Yang,Shengjin Cui,Jingang Luo,Yaxin Cao,Nan Yan,Hongying Wang
Interference is a significant source of laboratory errors that can cause erroneous measurement results. In clinical practice, all the measured results should exclude the influence of interference. In this study, the ion exchange high-performance liquid chromatography of hemoglobin A1c (HbA1c) was evaluated via three brands of HbA1c analyzers, and 12 endogenous and 24 exogenous substances were added to hemoglobin solutions with different HbA1c levels to simulate the corresponding clinical samples. After the potential interfering substances were screened via interference screening testing, the interference concentration thresholds of each potential interfering substance were determined on the basis of dose–response experiment. When these substances exceed the interference concentration thresholds, elevated HbA1c values are caused by endogenous cholic acid and low pH, whereas exogenous ethanol increases HbA1c measurements in samples with low values. However, HbA1c measurements decreased in samples with high values. Although there are some differences in the thresholds of interferent concentrations between different brands of analyzers, the differences are not significant. On the basis of the detailed interference concentration thresholds and interference substances, this evidence can be provided to clinical laboratory experts and help them interpret and determine the testing results of clinical laboratories.
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ELECTROANALYSIS
·
2026
·Vol. 38
·期 2
·e70115
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IF 2.6
Haixu Wang,Tingwei Zhang,Zhen Sun,Xiaonan Qi,Rongsong cao,Chuanlai Jiao
Efficient bifunctional electrocatalysts are crucial for the advancement of rechargeable zinc-air batteries (ZABs). In this article, we successfully synthesized a high-performance catalyst R-CoOOH@FeOOH through the oxygen evolution reaction (OER). Additionally, in situ Raman characterization results indicate that CoFe@NC-w undergo electrochemical reconstruction during the OER, leading to the formation of CoOOH and FeOOH species. This dynamic structural evolution is responsible for the enhanced OER activity of the catalyst. This transformation endowed the catalyst with exceptional OER activity. In addition, the catalyst exhibited exceptional performance in the oxygen reduction reaction, which shows a half-wave potential of 0.86 V vs. (RHE) reversible hydrogen electrode. When integrated into a ZAB, the catalyst delivers a low charging potential of 2.3 V at a high current density of 50 mA cm −2 , accompanied by an excellent long-term durability of 600 h. These findings offer viable strategies for the development of high-performance catalysts for ZAB.
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POLYMER COMPOSITES
·
2026
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IF 4.9
Qingfeng Sun,Qingguang Bao,Shan Cheng,Ning Wang,Jingyao Feng,Zhenghui Liu,Nan Li,Xigao Jian
MXene materials have shown considerable promise for application in fiber interface modification. However, current research remains largely focused on MXene deposition methods, with relatively little attention given to modification techniques for MXene materials. During MXene deposition, interlaced agglomeration often occurs, causing voids on carbon fibers and weakening composite interfacial properties. Therefore, modifying MXene to prevent interlayer bonding is essential for improving interfacial performance. This study combines flexible, multi-active-group CD-MOF with high-strength MXene via in situ growth, synthesizing a modified “soft-exterior, rigid-interior” MXene-MOF hybrid. An APTES-MOF-MXene-MOF interlayer was further constructed. Characterizations (XPS, Raman, SEM) confirmed that the interlayer introduced oxygen-containing groups, enhancing surface activity, roughness, and resin infiltration. The alternating soft–rigid structure also alleviated the modulus mismatch between fiber and resin, reducing stress concentration. Mechanical tests showed that the interlayer improved interlaminar shear, flexural, and tensile strengths by 58.94%, 34.91%, and 18.55%, respectively, along with enhanced dynamic thermomechanical properties. Failure behavior and interfacial mechanisms were investigated, demonstrating that this approach effectively suppresses MXene agglomeration and significantly enhances interfacial performance, offering a viable strategy for CFRTP improvement. Highlights A MOF-MXene-MOF sandwich heterostructure was synthesized. APTES-MOF-MXene-MOF greatly strengthens CF/PPESK composite's interfacial bonding. APTES-MOF-MXene-MOF interfacial layer efficiently relieves stress concentration.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2026
·
IF 9.2
Nabi Bux,Danruo Luo,Shan Qian,He Guo,Sadam Hussain Tumrani,Razium Ali Soomro,Guodong Zhang,Qiuling Ma,Jian Zhou,Tiecheng Wang
The wide occurrence of sulfonamide antibiotics in water environments poses a great threat to ecological system and human health. Cobalt-based catalysts are well known for advanced oxidation processes (AOP), but the synergistic role of heteroatoms is still uncertain. In this work, a new type of heterogeneous Co based catalyst with sulfur as the ligand (Co@S-N-C) was transferred through a straightforward one-pot pyrolysis approach for efficient activating peracetic acid (PAA) to degrade sulfadiazine (SDZ). Systematic characterization confirmed that the co-doping by S and N in carbon induced the formation of several cobalt species (Co 0 , Co 2+ , and Co 3+ ) and built a unique electronic structure featuring in abundant defects and large specific surface area. The Co@S-N-C/PAA system exhibited exceptional catalytic efficacy, accomplishing total SDZ degradation in 25 min and a substantial mineralization rate of 78.2% within 90 min, markedly surpassing the performance of single heteroatom-doped catalysts (Co@N-C and Co@S-C). Mechanistic investigations indicated that •OH and CH 3 COO• contributed 66.4% and 34.1% to SDZ degradation, respectively. DFT calculations revealed that S-N co-doping increased the electron transfer from low-valent cobalt sites to PAA, promoting O-O bond splitting. The catalyst exhibited excellent stability with 71% activity retention and minimal Co leaching (5%) after four cycles. Based on these results, five primary degradation pathways for SDZ were proposed, and the results of ecotoxicity analysis showed that the transformation products were less toxic. Overall, this work provides significant insights into the development of high-performance dual-heteroatom-doped catalysts to form the PAA-mediated AOP for wastewater treatment.
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BIOSENSORS & BIOELECTRONICS
·
2026
·
IF 11.8
Xue Wang,Lin He,Zihan Li,Zongqian Hu
In modern medicine, glycemic control is critical for the health of individuals with diabetes. Over decades of care, patients with diabetes have relied on glucose meters for monitoring and on insulin or adjunct hypoglycemic agents for glycemic control. Frequent blood sampling and injections increase infection risk, restrict patient mobility, and generate substantial single-use medical waste. We present a simple, user-friendly closed-loop blood-glucose management system. The system integrates a highly sensitive glucose sensor and a controllable drug-release module within a dual-mode microneedle array, coupled with a miniature electrochemical workstation, thereby enabling dynamic glucose monitoring, precise drug delivery, and stable glycemic control with minimal patient intervention. The system's design demonstrates potential for achieving closed-loop glucose management. Preliminary proof-of-concept studies in diabetic mouse models yielded positive trends in relevant data. This work establishes an engineering framework integrating dual-mode microneedle devices with portable bioelectronic devices, providing a technical foundation for future mid-to-long-term closed-loop glucose management.
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POLYMER
·
2026
·
IF 5.1
Yubin Luo,Liu Zhong,Shengyong Yang,Kanstantsin S. Livanovich,Haoqun Hong,Dong Xie
This study systematically investigates how solvent–monomer hydrogen bonding influences the stereoregularity of chain segments in the free-radical polymerization of vinyl acetate (VAc). Combining density functional theory (DFT) calculations, Fourier transform infrared spectroscopy (FTIR), and polymer property analysis, we examined the correlation among solvent hydrogen bond strength, polymer stereoregularity, and material performance. Three solvents with different hydrogen bond donor abilities—methanol (MeOH), trifluoroethanol (TFE), and hexafluoroisopropanol (HFIP)—were selected for study. FTIR spectra reveal that stronger hydrogen bonding causes a gradual red shift in the C=O absorption peak, confirming solvent–monomer complex formation. DFT results further show that increasing solvent fluorination shortens the solvent–VAc coordination distance and enhances hydrogen bond energy (MeOH < TFE < HFIP), consistent with the observed rise in syndiotactic stereoregularity of the resulting poly(vinyl alcohol) (PVA). Experimentally, stronger hydrogen bonding yields PVA with higher molecular weight, crystallinity, and improved thermal and mechanical properties. By integrating theoretical insight with experimental validation, this work demonstrates that solvent design can effectively regulate stereoregularity in free-radical polymerization, offering a feasible strategy toward synthesizing high-performance PVA materials.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Xu-Han Liu,Zhe Zhai,Ling-Ling Tao,Nan-Yu Chen,Yong-Xian Cheng
Intranasal vaccination is promising against respiratory infections but hindered by the mucus barrier. To overcome the adhesion-penetration dilemma, we developed a virus-inspired hybrid nanoparticle (GHNP) by functionalizing a cationic polymer/lipid core (HNP) with Ganoderma lucidum polysaccharide (GLP). By tuning the surface modification density of GLP, GHNP achieved balanced mucosal interaction and penetration, with an optimal GLP-to-HNP mass ratio of 1:24. The optimized GHNP(1/24) (∼104 nm, +27 mV) markedly enhanced mucus penetration via its virus-mimetic pseudo-zwitterionic interface. This led to improved antigen uptake under mucin barrier conditions by 79-fold in dendritic cells and 25-fold in macrophages. In a murine intranasal immunization model, the intrinsic immunostimulatory activity of GLP, mediated through TLR2/4 activation, further potentiated the immune response, eliciting robust mucosal and systemic immune responses. Specifically, GHNP(1/24) elevated bronchoalveolar sIgA 1.5-fold and serum IgG 1.6-fold compared to antigen alone, while maintaining a balanced IgG1/IgG2a profile. This work establishes a modular platform that bridges structural biomimetics and carbohydrate immunoengineering, offering a tunable, dual-functional strategy for advanced mucosal vaccine design that surpasses the capabilities of traditional delivery systems which often address either adhesion or immunostimulation alone.
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