International Journal of Electrochemical Science
·
2023
·Vol. 13
·期 2
·1556-1567
·
IF 1.5
Zhihong Yan,Bo Fu,Jincheng Chen,Tailin Liu,Kang Li
Bisphenol A (BPA) was successfully electrodeposited on glassy carbon electrode modified with the chitosan-graphene (Chit-GR/GCE) by multiple sweep voltammetry under ultraviolet (UV) irradiation. The experimental conditions of the BPA deposits and the probable oxidation mechanism were investigated. Two oxidation peaks (peakII=0.12 V, peakIII=0.20 V) appeared in a suitable potential range of 0.0V and 0.2V at the Chit-GR/GC eletrode in the presence of UV light, and it could be seen that the oxidation peak current increased with the increase of UV irradiation time. The emerging peakIII was reported firstly in the work, which showed that the Chit-GR modified electrode had catalytic activity on the oxidation of BPA. Based on the oxidation peak (III) of BPA oxidative porducts on the Chit-GR/GC electrode under UV irradiation, the electrochemical sensor was fabiracated for determination of BPA. The calibration curve was obtained in the range of 5.0 to 200.0 μM with the limit of detection of 0.34 μM (S/N=3) and the response sensitivity of 0.33 μA μM -1 , which was higher than those of the method of determining BPA based on the direct oxidtation of BPA (0.98 μM (S/N=3), 0.12 μA μM -1 ). It was applied successfully for determination of BPA in lake, soil and plastic bottle samples. The new strategy, based on anodic electrodeposition and photocatalytic oxidation of BPA oxidation porducts, was provided for determination of BPA under UV irradiation. It was green, evironmental and effective.
研究领域:
分析化学
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环境监测
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电化学传感
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污染物检测
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材料科学
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高影响因子
Sustainable Materials and Technologies
·
2024
·
IF 8.6
Wei Tan,Chunlong Zuo,Yin Tian,Lu Bai,Lina Jiang,Jieyun Zhao,Xiaoyu Liu,Yuanlin Ren,Xiaohui Liu
The white pollution caused by non-degradable plastics poses a serious threat to human society and the environment, thus developing biodegradable material is urgent. In this work, a novel phosphonitrile hybrid metal-polyphenol network was constructed and used for the preparation of flame retardant , UV resistant and antibacterial multifunctional polyvinyl alcohol composite (PVA@HCPD-Ag). The limiting oxygen index (LOI) value of PVA@HCPD-Ag was improved to 33.5%, while the peak heat release rate (PHRR) and total heat release (THR) decreased by 35.62% and 47.76%. Besides, the ultraviolet protection factor (UPF) value of PVA@HCPD-Ag was significantly improved from 4.63 of the original PVA to 482.79, while the tensile strength was increased by 10.23%. Furthermore, the inhibition efficacy of PVA@HCPD-Ag for E. coli and S. aureus was up to 98.12% and 99.99%. This work explored the synergistic flame retardant effect of in-situ reduced Ag 0 and phosphonitrile crosslinked polyphenol network and proposed an advanced strategy for developing high value-added functionalized PVA materials.
研究领域:
高分子材料科学
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功能材料
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纳米复合材料
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生物医用材料
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环境友好材料
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高影响因子
EUROPEAN POLYMER JOURNAL
·
2015
·
IF 3.005
Hongwei Zhang,Qijian Niu,Ning Wang,Jun Nie,Guiping Ma
In this research a thermo-sensitive drug loaded core–shell fibers were prepared by UV photo-polymerization combined with electrospinning technology. The biodegradable polymer polylactic acid (PLA) was used as the core with electrospinning and the N-isopropylacrylamide (NIPAM) was selected to be shell of the fibers via UV photo-polymerization, respectively. Combretastatin A4 (CA4) was used as the model drug loaded in PLA (core structure) to test the thermo-sensitivity of the core–shell fibers. SEM was performed to observe the morphology of the fibers. TEM was carried out to confirm the core–shell structure of the fibers. Furthermore, XPS and FTIR results demonstrated that the core–shell structure had been fabricated as designed. Water contact angle (WCA) test indicated that the fibers show different wettability when the temperature was below or above the lower critical solution temperature (LCST). Moreover, in vitro drug release test was conducted to explore the difference of the drug release when the temperature was at 25 °C and 40 °C. The cell culture studies showed that the prepared core–shell structure nanofibers have a potential application in the biomedical fields as tissue engineering.
研究领域:
生物材料
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药物递送
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组织工程
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高分子科学
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纳米医学
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高影响因子
ENVIRONMENTAL RESEARCH
·
2021
·
IF 6.498
Xiulei Fan,Zixuan Ma,Yefeng Zou,Jiaqiang Liu,Jun Hou
In recent years, tire wear particles (TWP), as the significant proportion of microplastics (MPs), has adsorbed much attention due to its widespread presence in aquatic ecosystem . Compared with typical MPs, TWP exists significant differences in composition, additives, characteristics and so on. With TWP and polypropylene (PP) as target MPs, Cd 2+ and Pb 2+ as target pollutants, the adsorption-desorption characteristics of heavy metal ions on original and aged MPs were studied. Compare with the PP, the S BET of TWP increased more significantly after the UV ageing process. Meanwhile, the zeta potential of TWP increased from −8.01 to −14.6 mV and PP from −5.36 to −9.52 mV, and the surface of the TWP were more negatively-charged. In addition, the hydrophilicity of MPs enhanced due to the increased oxygen-containing functional groups after ageing process. Compared with PP, the physicochemical properties of TWP changed more obviously during UV ageing processes. The adsorption results showed that the pseudo-second-order model could better describe the adsorption processes of Cd 2+ and Pb 2+ on MPs. Meanwhile, the orders of adsorption capacity of MPs for Cd 2+ and Pb 2+ were aged TWP > aged PP > original TWP > original PP. The phenomenon of adsorption confirmed that TWP had better vector effects for heavy metal ions than PP, and the ageing processes could enhance the adsorption capacity of MPs. Moreover, the desorption results demonstrated that, compared with PP, the TWP (with higher adsorption capacity) also had the better desorption capacity for heavy metal ions in simulated gastric fluid. Compared with PP, the TWP might cause a more serious hazard to aquatic environment and organisms. These investigations would contribute to assessing the potential environmental and biological risk of TWP, especially considering the effect of the ageing process.
研究领域:
环境科学
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生态毒理学
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微塑料污染
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水生生态系统
·
环境化学
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高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Jieni Liu,Leilei Wu,Fan Yinyin,Hongqian Hu,Yu Qiao,Qing Sun,Lihui Zhang,Dahui Liu
Fresh-cut purple yam is highly susceptible to enzymatic browning during storage, primarily driven by peroxidase (POD), while superoxide dismutase (SOD) serves as an oxidative-stress marker. This study investigated the effects of ultraviolet-C (UV-C), high-voltage electrostatic field (HVEF), and their combination (UV-HVEF) on browning inhibition and quality preservation. The combined treatment (UV-C at 68 W for 120 min followed by HVEF at 30 kV for 8 min) exhibited the strongest synergistic effect, achieving the highest L* value, total phenolics, flavonoids, and anthocyanins, along with the lowest browning degree after 8 days of storage. UV-HVEF induced tryptophan exposure and α-helix loss in these enzymes, leading to inactivation, while downregulating POD, phenylalanine ammonia-lyase (PAL), cinnamate-4-hydroxylase (C4H) expression and preserving p -coumaric acid at 54.56% higher than the control. Correlation analysis confirmed brightness positively correlated with phenolics and negatively with enzyme activities. Scanning electron microscopy revealed HVEF damaged starch granules, while UV-HVEF caused irregular morphology. Overall, UV-HVEF is an effective non-thermal strategy balancing enzyme inactivation with quality maintenance.
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产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Ma Yunlong,Fan Tao,Li Shufang,Zhu Feihao,Zhang Chu
Emergency online sealing of pipeline leaks poses significant
challenges
due to the complexity of pipeline structure, stress state, and conveying
medium. This study developed a magnetorheological adhesive and a synergistic
online sealing method combined with a magnetic device. The polymerization
process and molecular structural characteristics of the product were
analyzed using fourier transform infrared spectroscopy (FTIR), X-ray
photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and TG-DSC.
The curing mechanism involves the simultaneous radical-induced cationic
frontal polymerization of the epoxy group and free radical polymerization
of the alkenyl, finally forming a cross-linked network comprising
rigid bisphenol A segments and flexible polyethoxy segments. The effects
of reactant formulation ratios on polymerization behavior and mechanical
properties were systematically investigated. The cured product exhibited
a maximum tensile strength of approximately 35.9 MPa and a bonding
strength to metals of approximately 9.17 MPa while demonstrating typical
soft magnetic behavior with magnetization intensity proportional to
the magnetic filler content. Static pressure sealing tests and online
pressurized sealing tests were conducted. The flow field characteristics
of the leak sealing process were investigated using Fluent simulations,
and the sealing device was optimized accordingly. The emergency online
sealing can be successfully achieved for leakage diameters up to 10
mm and leakage pressures up to 1.5 MPa, with the entire sealing process
completed within 10–20 min. This study provides a feasible
and effective strategy for rapid, on-site emergency sealing of pipeline
leaks.
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高影响因子
Polymers
·
2026
·Vol. 18
·期 9
·1095
·
IF 5.8
Hu Lyu,Lei Wang,Yue Li,Guoliang Yu,Shudi Liu,Dongzhou Sun,Yuling Liang,Pengfei Huo,Dawei Zhang,Zhiqiang Ning,Xianzhi Kong
As space exploration activities and strategic deployments in polar regions continue to advance, higher demands have been placed on the low-temperature resistance of propellant binders. Here, high cis-1,4 content hydroxyl-terminated polybutadiene (HTPB) was successfully synthesized via an oxidative cleavage method using commercial cis-polybutadiene (BR). The microstructure, molecular weight, hydroxyl value, rheological behavior, thermal properties, and mechanical performance of the resulting cis-HTPB were systematically characterized. By adjusting the molar ratio of mCPBA to butadiene units, three cis-HTPB samples with varying molecular weights were obtained. The high cis-1,4 structure (93%) was preserved after modification. The synthesized cis-HTPB exhibited an ultra-low glass transition temperature (Tg) of approximately −100 °C and lower viscosity compared to commercial HTPB, indicating excellent low-temperature flexibility and processability. In addition, the cis-HTPB was further modified with acrylate groups to produce a UV-curable derivative (AcTPB). The cured AcTPB also retained a Tg near −100 °C, demonstrating its suitability for ultra-low-temperature applications and its promise as a photocurable binder for 3D printing propellant.
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PubMed
高影响因子
Applied Materials Today
·
2026
·
IF 7
Jinqing Li,Chen Chen,Ningli Pan,Lili Wang,Dawei Gao
Superhydrophobic cotton fabric made by H-MIL-100(Fe)/PDMS. • Excellent self-cleaning, UV shielding, and oil-water separation. • Efficient oil-water separation with stable cyclic performance. • Good mechanical and chemical durability for practical use. The discharge of oil-containing wastewater not only pollutes water bodies but also poses a threat to human health and the living environment. Therefore, the development of multifunctional textiles integrating stain resistance, UV protection, and efficient oil-water separation has become a research hotspot. In this study, iron-based metal-organic framework (MOF), NH 2 -MIL-100(Fe), was used as the core material. Hydrophobic H-MIL-100(Fe) was constructed through hydrothermal synthesis and surface modification with stearic acid (SA), and then compounded with polydimethylsiloxane (PDMS). A micro-nano hierarchical structured coating was fabricated on the surface of cotton fabric via a vibration-curing process. Experimental results showed that the coated cotton fabric exhibited superhydrophobicity (water contact angle, WCA = 156°, sliding angle = 8°) and self-cleaning properties. After mechanical friction or immersion in acid-base solutions (pH = 1–13), the WCA still remained at 142 ± 2°. The ultraviolet protection factor (UPF) reached 101.9. Oil-water separation tests indicated that the separation efficiency for four types of oil-water mixtures (n-hexane, ethyl acetate, toluene, and chloroform) was all over 97%, with a flux ranging from 3315 to 3500 L·m −2 ·h −1 . After 10 cycles of separation, the efficiency was still maintained at 98%, demonstrating excellent corrosion resistance and mechanical stability. In this study, the synergistic regulation of the micro-nano structure of MOF and the low surface energy of PDMS realized the multifunctional integration of cotton fabric, providing a new material solution for environmental remediation and outdoor protection. Download: Download high-res image (203KB) Download: Download full-size image
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Small
·
2026
·
IF 11.8
Xiaotian Ma,Hongyuan Sha,Qianzhen Zhang,Ruyi Niu,Xiya Wen,Xifa Long,Shilie Pan,Yun Yang
To address the increasing demand for UV optical devices, development of novel materials combining high birefringence with a broad UV transmission window is crucial. In this work, a targeted structural design strategy centered on introducing cation-ordered sites and optimizing hydrogen bond networks was proposed and executed, which successfully aligns the polarized [NO 3 ] and [SO 3 NH 2 ] groups in parallel and achieves synergistic enhancement of optical anisotropy. Guided by this strategy, four new UV nitrate sulfamates were synthesized. Among them, the calculated birefringence of K 2 (NO 3 )(SO 3 NH 2 ) (0.122 at 546 nm), Rb 2 (NO 3 )(SO 3 NH 2 ) (0.116 at 546 nm) and K 0.5 (NH 4 ) 1.5 (NO 3 )(SO 3 NH 2 ) (0.126 at 546 nm) display about 2.7-, 2.5- and 2.8-fold higher than that of Rb 1.7 (NH 4 ) 0.3 (NO 3 )(SO 3 NH 2 ) (0.045 at 546 nm), with these values exceeding all the birefringence reported to date for metal sulfamates, nitrate sulfamates and co-crystal. More importantly, this study elucidates how the regulation of cation-occupied cooperative hydrogen bond networks drives structural transformations and clarifies the underlying origins of birefringence and its enhancement. These findings provide valuable insights and guidance for the rational design of short-wavelength UV birefringent materials.
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PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Sheng Wang,Shang Gao,Gousheng Liu
A reactive flame-retardant acrylate monomer (PEDP) with a high phosphorus content has been synthesized through a straightforward process to improve the fire safety of UV-curable materials. In comparison to the traditional monomer PETA, the UV-cured PEDP (UV-PEDP) enhances the limiting oxygen index (LOI) from 28.7% to 31.9% and achieves a UL-94 V0 rating without any melt dripping. Meanwhile, UV-PEDP exhibits a 42.7% reduction in peak heat release rate (PHRR) and a 30.6% decrease in total heat release (THR) compared to UV-PETA in the cone calorimetry test (CCT). Mechanistic analysis attributes the improved flame retardancy to gas-phase quenching and dilution effects from phosphorus-containing decomposition products, as well as the formation of char in the condensed phase. The UV-PEDP demonstrates high transparency (exceeding 80% at 800 nm) and excellent hardness (above 93 Shore-D). Although there is a decrease of 27% in tensile strength and 30% in elongation, these trade-offs remain acceptable for many coating applications. This study presents an effective strategy to expand the safe use of UV-curable materials.
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高影响因子
ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Xiao Li,Xiaoyu Tan,Guiying He,Yuheng Chen,Mengting Yang,Guan Zhang,Baiyang Chen
While dissolved organic nitrogen (DON) is traditionally considered a crucial precursor of nitrogenous disinfection byproducts (N-DBPs) like dichloroacetonitrile (DCAN), the present study hypothesizes that dissolved inorganic nitrogen (DIN) and nitrogen-free organic matter (NFOM) can also serve as important precursors of DCAN. To validate this hypothesis, this study compared the DCAN yields from DIN coupled with NFOM versus those from DON during the ultraviolet (UV)/chlorine process. Under identical carbon, nitrogen, and chlorine dosage conditions, the levels of DCAN formation followed the order: NFOM + ammonia (NH 4 + ) > DON ≫ NFOM + NO x − (nitrate and nitrite), highlighting the significance of DIN and NFOM in DCAN formation. Among NFOMs, compounds with benzene rings generated more DCAN than those without benzene structures, indicating that the former should be prioritized for control. Among model DON compounds, the DCAN yields decreased with increasing number of carbon, suggesting a dilemma in regulation compliance and control efficiency. Hydroxyl radicals together with reactive chlorine species, reactive nitrogen species, and monochloramine contributed 57%, 37%, and 6% to DCAN formation, respectively, whereas UV alone had negligible effects. The evolutions of parent compounds and intermediate products showed various relations with DCAN formation, suggesting that the process might involve multiple pathways for N-DBPs. Overall, this study provides new insights into the formation mechanisms of DCAN and highlights the necessity to re-evaluate precursor control strategies by controlling DIN and aromatic NFOM alongside DON.
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PubMed
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 30
·27707-27717
·
IF 6.1
Yulu Liu,Jiamin Li,Yizhou Xiao,Yuchi Chen,Yunkai Zhou,Fangmei Zhou,Bingqi Zhu,Wenxiao Jiang,Xing Chen,Guangming Li
The application of biomass-derived carbon dots (CDs) in smart food packaging is often limited by their low photoluminescence quantum yield. Here, we report a one-pot hydrothermal synthesis of high-performance CDs from black tea waste using citric acid as a multifunctional modulator. FTIR, XPS, zeta potential, and TEM measurements collectively reveal that citric acid enhances photoluminescence primarily through surface passivation, accompanied by the formation of smaller and more uniform carbon cores with a narrower size distribution. This synergistic modulation, dominated by surface passivation, leads to a 25.5-fold quantum yield enhancement from 0.4% to 10.2%, a narrowed emission spectrum with full width at half maximum reduced from 105.59 nm to 64.95 nm, a prolonged fluorescence lifetime from 2.86 ns to 6.93 ns, and improved photostability. Leveraging these optimized properties, the as-prepared CDs are applied in two functional systems for food applications. As a fluorescent ink, they enable covert anti-counterfeiting patterns that are invisible under ambient light but emit bright blue fluorescence under UV excitation. Additionally, a nanocomposite coating incorporating these CDs significantly extends the shelf life of strawberries at room temperature, as evidenced by reduced weight loss, maintained firmness, and preserved soluble solids content over a six-day storage period. This work presents a citric acid-mediated strategy for upcycling agricultural waste into value-added carbon nanomaterials, advancing sustainable and intelligent food packaging technologies.
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PubMed
高影响因子
危险品化学品经营许可证（带存储）