APPLIED SURFACE SCIENCE
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2024
·
IF 6.3
Xiaoshun Wei,Xuechun Yang,Yun Guo,Yinzhong Liu,Lingchao Wang,Qingjie Wang,Lingli Cheng,Zheng Jiao
In this study, a novel UV-enhanced Mg-doped MOF-ZnO sensor was investigated for its efficient detection of n-butanol gas at lower temperatures. The composite samples were prepared by the co-precipitation method with the appropriate component ratio. The structure, morphology, and optical properties of the as-prepared samples were systematically analyzed through XRD, SEM, TEM, BET, XPS, and UV–vis characterizations. The gas-sensitive performances based on the pristine MOF-ZnO and Mg-doped MOF-ZnO sensor series with the doping levels of 1 %, 3 %, 5 %, and 7 % (wt%) were comprehensively evaluated by adopting the gas-sensitive system. Among them, the 3 % Mg:MOF-ZnO sensor has given prominence to the largest specific surface area and highest oxygen vacancy concentration demonstrating the most excellent gas-sensing performance. Furthermore, with the aid of UV excitation, the 3 % Mg:MOF-ZnO sensor had achieved the enhanced response value of 2049 that was 4.44 times higher than that of pristine MOF-ZnO to 100 of ppm n-butanol at a low temperature of 246 °C, additionally presented out the superior reproducibility with speedy response/recovery time (12/22 s), the theoretical detection limit as low as 200 ppb, as well as the excellent long-term stability and selectivity for n-butanol. This study offers a promising strategy for the well-development of high-performance n-butanol sensors.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
·
IF 11.3
Hailong Zhang,Qiannan Duan,Lehan Sun,Jianchao Lee,Weidong Wu,Chi Zhou,Hongfang Zhang,Zhongming Guo,Xiaodan Zhang,Xiang Tang,Duo Yun,Liang Yan,Lei Huang,Peng Wang,Baoxin Zhai
In the field of environmental monitoring, traditional spectroscopic techniques, despite their high sensitivity in heavy metal (HM) detection, are plagued by complex equipment and high costs. The emergence of artificial intelligence (AI) has driven the digitalization and intelligence of spectral analysis. However, the complexity of environmental samples and spectral overlap remain a major challenge. This study proposes a multi-component HM detection method that integrates ultraviolet-visible (UV-Vis) superimposed spectra with deep learning to address the issue of spectral overlap. By using combinatorial chemical probes to enhance the specificity of colorimetric reactions and conducting high-throughput experiments to collect spectra, a Transformer model is trained to extract qualitative and quantitative information in an end-to-end manner. During the method development phase, the model was trained using five representative HMs (Sb, Fe, Ni, Cd, Cu) to verify its recognition ability under complex conditions (average R² = 0.936, RMSE = 0.132 mg L −1 , MAE = 0.054 mg L −1 ). The method was then extended to detect ten HMs in real-world samples, demonstrating its scalability and robustness (average R² = 0.681, RMSE = 0.189 mg L −1 ). These results show that the method can simultaneously analyze multiple HMs and transition from spectral fingerprints to quantified ecological risk profiles. Additionally, the AI analysis software developed in this study automates the entire process from spectral input to multi-index detection and risk assessment, providing environmental regulatory authorities with minute-level response capabilities and facilitating proactive early warning for HM pollution control.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Guolin Zheng,Zhe Jiang,Yifan Cui,Man Zhou,Yuanyuan Yu,Ping Wang,Qiang Wang
Multifunctional textiles have attracted widespread attention with the improvement of awareness of health. Especially, the fluorine-free superhydrophobic and conductive cellulose fiber-based fabrics have received intensive interest due to their broad and high-value applications. Herein, the copper sulfide nanoflowers were in-situ deposited on cotton fabric followed by polydimethylsiloxane (PDMS) treatment for encapsulating CuS nanoflowers and obtaining superhydrophobicity, recorded as Cot@PTA@CuS@PDMS. Cot@PTA@CuS@PDMS possesses superhydrophobicity with contact angles of 153.0 ± 0.4°, photothermal effect, excellent UV resistance, good conductivity, and anti-fouling. Interestingly, the resistance of Cot@PTA@CuS@PDMS is significantly reduced from 856.4 to 393.1 Ω under simulated sunlight irradiation with 250 mW/cm 2 . Notably, the resistance can be slightly recovered after shutting off simulated sunlight. Besides, Cot@PTA@CuS@PDMS has efficient oil-water separation efficiency for corn germ oil and castor oil, respectively. Briefly, this work provides a novel, facile, and promising strategy to fabricate multifunctional fiber-based textiles with the reversible change of resistance under simulated sunlight irradiation, inspiring more scholars to control the resistance change of textiles by light irradiation.
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ChemistrySelect
·
2024
·Vol. 9
·期 30
·e202401714
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IF 1.9
Honggang Jiang,Jiahui Chen,Jiajun Zou,Yanyan Cui,Jiaoyan Ai,Lina Song,Baohua Liu
Graphical In this paper, UV-curable resins prepared from diols (EG and BDO), isophorone diisocyanate (IPDI) and hydroxyethyl acrylate (HEA) are used to toughen bisphenol A-type epoxy acrylate (EA). The test of mechanical properties and coating properties shows that the toughness of EA is improved. UV-curable oligomers were synthesized by the reaction of ethylene glycol (EG) or 1,4-butanediol (BDO) with isophorone diisocyanate (IPDI), and then terminated with hydroxyethyl acrylate (HEA). The chemical structures and molecular weight of the two oligomers were analyzed by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance ( 1 H NMR and 13 C NMR) and high performance liquid chromatography (HPLC). The obtained UV-curable oligomers were separately mixed with bisphenol A-type epoxy acrylate (EA) in different mass ratios. The resulting mixture was then mixed with the active diluent tetrahydrofuran acrylate (THFA) and the photoinitiator ethyl 2,4,6-trimethylbenzoylphosphonate (TPO-L) for UV curing. The curing reactions were performed at UV light intensity of 120 mW/cm 2 . The unsaturation conversion was monitored by real-time infrared spectroscopy (real-time FT-IR). The mechanical properties and coating properties of the UV-cured products were analyzed. The results showed that the synthesized UV-curable oligomers had good toughening effect on EA, and the tensile strength of EA was also improved.
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Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 1
·1-12
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IF 23.2
Guan Yanhua,He Haodong,Tang Dexi,Guo Pengfei,Han Xiaoqin,Zhang Haixia,Xu Jiayun,Dai Lin,Huang Zhanhua,Si Chuanling
Perovskite solar cells (PSCs) have become a promising solar energy utilization technology due to their high energy conversion efficiency and low preparation cost. However, the inherent instability under UV illumination limits their practical applications. In this work, we developed a new approach to fabricate functional cellulose paper (FTH paper) with high transparency, high haze, and UV-blocking, which can be used to extend the lifespan of PSCs. When the impregnation amounts of carboxymethyl cellulose and tannic acid were 16 wt% and 0.7 wt%, the light transmittance and UV-blocking performance reached 86.8% (at 600 nm) and 83.1% (at 320 nm), respectively, while maintaining a haze of 71.5%. After protonation and desalination treatment, the FTH paper exhibited good water resistance and mechanical properties (71.49 MPa, 2156 folding cycles). More importantly, FTH paper coating can significantly improve optical path length and the UV-stability (improved by 26% after 100 h) of PSCs. This study not only provides a simple and effective strategy to improve the properties of PSCs but also opens the way for high-value utilization of paper materials.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Weirui Zhang,Xiaofeng Cui,Wenjing Ji,Ming Huang,Na Zhang,Liwei Mi,Xianhu Liu
Thermoplastic polyurethane (TPU), with high strength and elasticity, is widely used in wind turbine blade protection. However, it struggles to resist particle erosion and UV aging in desert environments. In this study, UV-327 (A), UV-531 (B), and HALS622 (M) were combined to prepare UV-resistant UV-TPU/NW (ABM) film. The three anti-UV agents cover the main wavelengths, forming a three-dimensional protective network of “UV absorption, free radical scavenging, and cyclic regeneration.” ABM film shows tensile strength 39.71 MPa and elongation 935.48%, comparable to pure TPU (39.52 MPa, 939.58%). After 10 days of UV aging, the color difference (ΔE) and yellowness index (ΔYI) of ABM are 12.88 and 24.25, respectively, significantly lower than those of pure TPU (ΔE = 24.74, ΔYI = 47.69). After 20 days of UV aging, ABM film only has a few fine cracks on the surface, and the tensile strength and elongation at break remain at 31.50 MPa and 868.35%, respectively, much higher than those of pure TPU (17.66 MPa, 706.53%), with a low erosion rate of 1.52% (pure TPU 2.67%). Meanwhile, UV-TPU/(NW@G/C 1.0 ) electrothermal film based on ABM maintains a steady-state temperature of 81.16°C under 11 V after 20 days of aging. This demonstrates its potential for anti-icing applications on wind turbine blades.
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POLYMER
·
2025
·
IF 4.5
Yuxiang Yi,Hongfei He,Lu Liu,Na Sun,Keqing Zhou,Xiaodong Qian,Congling Shi,Yuan Hu,Bin Yu
Owing to their superior environmental stability and conductivity, Ionogels have emerged as strong competitors to hydrogels in flexible conductive materials. However, their practical applications are hindered by inadequate mechanical properties. Herein, we report a mechanically robust ionogel synthesized via photo-initiated free radical polymerization of acrylamide (Am) and hydroxyethyl acrylate (HEA) in the ionic liquid 1-butyl-3-methylimidazolium dihydrogen phosphate ([BMIm][DHP]). The resulting Am-co-HEA ionogel exhibits a microphase-separated structure, achieving a maximum tensile strength of 17.41 ± 1.268 MPa. By modulating the content of ionic liquid, the ionogel demonstrates a synergistic enhancement of strength and toughness (tensile strength: 8.11 ± 0.34 MPa, elongation at break: 748 ± 111%) and favorable ionic conductivity (1.19 mS/m), alongside dual responsiveness to mechanical strain and temperature variations. Furthermore, the Am-co-HEA ionogel exhibits enhanced fire safety and can be applied as a flame-retardant and alarm-integrated multifunctional coating on wood surfaces. The ionogel coating enables wooden strips to achieve the UL-94 V-0 rating while elevating the LOI to 31%. Upon flame exposure, the coating rapidly responds to fire threats, thereby significantly improving the fire safety of combustible wood materials.
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Journal of Macromolecular Science Part A-Pure and Applied Chemistry
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2017
·
IF 0.963
Xiao-Xiao Guan,Jian-Qun Gan,Guo-Kang Chen,Xiao-Mei Huang,Man-Geng Lu,Kun Wu,Li-Yan Liang,Jun Shi
A hyperbranched polyester polythiol(H20-SH) was synthesized and characterized by FTIR spectral analysis, 1H-NMR spectral analysis and GPC analysis. H20-SH was added into the formulation of UV-curable epoxy acrylate networks based on thiol-acrylate chemistry. The effects of H20-SH on polymerization kinetics, thermal and mechanical properties of thiol-epoxy acrylate networks were investigated by Real-time infrared spectroscopy, dynamic mechanical analysis (DMA), thermogravimetric (TGA), tensile test and water absorption characterization. Results show that epoxy acrylate resin with the addition of H20-SH massively reduces oxygen inhibition, improves the uniformity of cured films and enhances the tensile strength of the films. However, the thermal stability and glass transition temperature (Tg) decreases with the increasing amount of H20-SH.
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OZONE-SCIENCE & ENGINEERING
·
2020
·
IF 2.082
Wenlei Qin,Zhuang Lin,Lei Sun,Xiangjuan Yuan,Dongsheng Xia
The efficiency of the integrated UV/O3/persulfate (PS) process was preliminarily explored with the emphasis on the pollutant removal performance and reactive radical contributions in this study. The results demonstrated that the integrated UV/O3/PS process was significantly efficient with the pseudo-first-order rate constants of atrazine (ATZ) degradation increased by 18.7, 3.3 and 2.6 times compared to that in the O3/PS, UV/O3 and UV/PS processes, respectively. Hydroxyl radical (•OH) and sulfate radical (SO4•−) were corroborated to be the dominant reactive radicals in the UV/O3/PS process via the radical scavenger experiments. The increase of PS dosage in the UV/O3/PS process could contribute to the accelerated abatement of ATZ due to the enhanced formation of •OH and SO4•−. The UV/O3/PS process was demonstrated to be not susceptible to the impact of solution pH and could achieve a high removal efficiency of ATZ at each experimental pH condition (3.5 − 9.5). Compared to UV photolysis, O3 and •OH, SO4•− was confirmed to play a more important role and account for 57.3%−72.1% elimination of ATZ at the investigated pHs. Moreover, the O3/UV/PS treatment had a moderate resistance to the influence of water matrix components such as bicarbonate ions, providing a potential alternative for effective decontamination of organic contaminants in water treatment.
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Science China-Materials
·
2026
·
IF 7.7
Zhang Chen,Shi Guohong,Miao Jia-Tao,Liu Ren
Ionic conductive hydrogels have gained extensive attention in the field of intelligent sensing due to their good flexibility, tunable electrical conductivity, and multi-stimuli responsiveness. However, hydrogels easily freeze, dehydrate, or swell in external environments, thus losing their original structure and functions. Therefore, improving the environmental adaptability of conductive hydrogels remains a challenge. Herein, ionic hydrogels were encapsulated in real time via UV-assisted multi-material coaxial direct ink writing (DIW) 3D printing, and ionic conductive hydrogel sensors with array structures were prepared. The core ionic conductive hydrogel is isolated from the external environment by the hydrophobic photocurable polydimethylsiloxane (PDMS) shell resin. The sensor exhibits excellent environmental adaptability with stable sensing performance after 60 days in dry environments or underwater, accurate temperature monitoring across a wide range of −20–120 °C, reliable sensing capabilities at both high and low temperatures, and stable application in acid, alkali, and organic solvents. This work proposes a simple strategy for fabricating a new type of ionically conductive hydrogel sensor, which overcomes the environmental application limitations of traditional hydrogel sensors.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Qingyi Xie,Xiaolin Wang,Yuqing Wang,Jiamei Fu,Haiquan Sun,Fenglong Li,Minghui Cui,Junyi Zhou,Jin Zhu,Jing Chen
The incorporation of lignin into waterborne polyurethane (WPU) networks for the preparation of high-performance, multifunctional protective coatings represents a highly attractive yet challenging research direction. This study employed a highly reactive soluble modified lignin (MOLA) as a polyol and incorporated it into the main chain of a WPU polymer network. A series of bio-based waterborne polyurethanes (CLWPU–CO x ) with tailored molecular architecture was synthesized and found to exhibit corrosion resistance, UV blocking, UV-aging resistance, self-cleaning behavior, weather resistance, biodegradability, and non-biotoxicity. The influence of MOLA content on the chemical structure and properties of CLWPU–CO x was systematically investigated, and quantitative structure–property relationships between the MOLA loading ratio and material properties were established. The results indicated that MOLA simultaneously served as both a chemical and physical crosslinking site, thereby regulating the microphase separation of WPU. The resulting uniform internal structure and high crosslinking density endowed CLWPU–CO x with excellent hydrophobicity, water vapor barrier properties, gas barrier properties, and long-term outdoor durability, confirming its considerable potential for marine anti-corrosion protective coating applications. Download: Download high-res image (158KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Tong Luo,Chuanwei Lu,Chunpeng Wang,Tongqi Yuan,Fuxiang Chu,Jifu Wang
Eutectogels hold considerable promise soft electrodes for high-performance flexible triboelectric nanogenerator (TENG) due to their tunable mechanical properties and environmental stability. However, conventional eutectogels with single linear polymer chains often exhibit poor mechanical strength as well as undesirable migration of components (e.g., initiators), which compromise device stability and limit their environmental adaptability in high-performance energy harvesting. Here, lignin was molecularly engineered into branched lignin nanospheres (BLNS) functionalized with polymerizable acrylate groups. In a deep eutectic solvent system, BLNS simultaneously enabled rapid self-initiated UV polymerization (97.3% C C conversion) and constructed a robust, non-migrating crosslinked network, yielding triboelectric supramolecular eutectogels (SEG). Specifically, benefiting from branched backbone and nanoreinforcing effect of the BLNS, the resulting SEG achieved exceptional mechanical robustness (tensile strength of 1.76 MPa, toughness of 5.10 MJ/m 3 ) and strong adhesion (1.21 MPa). The SEG-based sensor exhibited a high ionic conductivity of 4.50 mS m −1 and a gauge factor of 3.3, while maintaining stable sensing performance over a wide temperature range (−30 to 80 °C) and under varying humidity conditions (30–90% RH), demonstrating excellent adaptability to harsh environmental conditions. As a proof-of-concept, a TENG was constructed using the SEG as the flexible electrode, with open-circuit voltage remaining stable over 6000 contact–separation cycles, underscoring the robustness and operational stability essential for reliable self-powered soft electronic systems. This work establishes a versatile strategy for designing multifunctional lignin-based materials for next-generation self-powered electronics.
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