Environmental Chemistry and Ecotoxicology
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2026
·
IF 12.3
Xin Li,Zuo Tong How,Xiaochen Wu,Chenye Wang,Jian Xu,Changsheng Guo,Ying Zhang,Xiaoxian Yang,Jinzeng Gu,Rui Qin,Like Chen
Organic ultraviolet filters (OUVFs) are widely used in personal care products and are recognized as emerging contaminants. On tropical island such as Hainan Island, intensive tourism and high OUVFs usage amplify their environmental release. However, integrated information on their sources, removal performance, and ecological risks in tropical island wastewater treatment systems remains limited. Therefore, this study aims to elucidate the occurrence patterns, dominant source contributions, and removal efficiencies of OUVFs in wastewater treatment plants (WWTPs) with various treatment configurations on Hainan Island. The overall detection frequency of 14 target OUVFs across 21 influents was 53.1%, with total concentrations ranging from 21.2 to 303.6 ng/L. Benzophenone-3 and butyl methoxydibenzoylmethane (BMDBM) together accounted for 66.4% of total concentrations. Positive matrix factorization identified outdoor water recreation-related sunscreen use (48.1%), composite inputs from human metabolism and textile washing (38.1%), and daily personal care and cleaning product use (13.8%) as the three major source categories. While WWTPs integrating enhanced biological treatment and high-efficiency solid-liquid separation technologies could achieve near complete removal of OUVFs. The removal of individual OUVF was influenced by various water quality parameters and their physicochemical properties. Hydrophilic OUVFs such as benzophenone-4 are poorly removed with even negative removal, resulting in WWTPs effluents acting as a secondary OUVF source to the aquatic environment. While the environmental risk quotient assessment indicated low short-term ecological risks (RQ < 0.1), the Environmental Health Prioritization Index identified BMDBM as a high-priority compound requiring close attention. These findings provide insights relevant to wastewater management in tropical island regions experiencing similar tourism-related pressures and sensitive coastal environments.
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Journal of Food Measurement and Characterization
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2026
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IF 3.6
Zhang Jianhui,Liang Jiaxin,Wang Qun,Yip Tszho,Lyu Qinghua,Wang Ling
Grape seed extract (GSE) is a polyphenol-rich dietary ingredient, and its compositional complexity poses challenges for precise product quality assessment. At present, GSE quality control mainly relies on spectrophotometric assays that measure bulk indices, such as total polyphenols and total procyanidins. However, these methods cannot readily distinguish low-oligomeric procyanidins from highly polymerized components due to the lack of structural resolution. To enable more specific characterization of key constituents, this study developed and validated an ultra-performance liquid chromatography-ultraviolet detection (UPLC-UV) method for the simultaneous quantification of five phenolic markers: gallic acid (GA), (+)-catechin (C), procyanidin B2 (PCB2), (−)-epicatechin (EC), and procyanidin C1 (PCC1). Using this method, we systematically compared 14 industrial raw materials from different manufacturers and five commercial dietary supplements. The results showed that, among industrial raw materials with label-declared total procyanidins ≥ 95%, the measured concentrations of the target oligomeric markers differed markedly across samples. Analysis of commercial finished products further showed that substantial between-product differences in key components remained evident even after label-context normalization. These findings indicate that chromatographic quantification of structurally specific markers, used as a complement to conventional total-content indices, would provide more detailed compositional information and thereby serve as a valuable supplementary analytical approach for routine quality control of GSE and related products.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.8
Tong Chen,Xiaoqin Tang,Ziyu Wei,Jinrong Xu,Guangwei Huang,Hecheng Meng,Hui Su,Yongzhi Hu
To enable rapid prediction of the skin-whitening efficacy of dandelion ethanol extract, quantitative prediction models for ABTS and DPPH radical scavenging activities, tyrosinase inhibition rate, and whitening activity index were developed using ultraviolet-visible (UV–Vis) spectroscopy combined with chemometric methods. The underlying mechanisms were further investigated through Fourier transform infrared spectroscopy (FT-IR), liquid chromatography-tandem mass spectrometry (LC-MS/MS), and molecular docking studies. The results demonstrated that UV–Vis spectroscopy combined with feature extraction exhibited robust predictive performance for all whitening-related indicators. The optimal prediction correlation coefficients ( R p 2 ) for each indicator exceeded 0.85, and the residual predictive deviation ( RPD ) values in the validation set were greater than 2.5. Compared to raw spectra, the application of feature extraction could significantly enhance the performance of predictive models. The functional group information obtained from FT-IR, characteristic ultraviolet absorption wavelengths, and LC-MS/MS analysis collectively indicated that flavonoids and phenolic acids were the primary active components contributing to the whitening efficacy. Molecular docking analysis revealed that flavonoids and phenolic acids exhibited stable binding interactions with key target proteins, indicating their potential role in inhibiting melanin synthesis and contributing to the whitening efficacy. This study presented a rapid and reliable approach for evaluating the whitening activity of dandelion ethanol extract. Furthermore, the underlying mechanisms were elucidated through an integrated analysis combining spectroscopic characterization, component identification, and molecular mechanisms. These findings could provide methodological support for the efficient evaluation of whitening efficacy in traditional Chinese medicine and contribute to a deeper understanding of its mechanistic basis.
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PubMed
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ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Zhimin Cui,Yongyun Mao,Dandan Gao,Jiyang Xie,Wanbiao Hu
Stimuli-responsive hydrogels with reversible property switching are highly desired for soft electronics, but achieving this with a single stimulus remains challenging. Herein, a novel PAM/CMC@Fe 3 + dual-network hydrogel is engineered via a UV-triggered Fe 3 + /Fe 2 + valence cycle. UV light reduces Fe 3 + to Fe 2 + , producing a soft adhesive state, while subsequent air oxidation re‑oxidizes Fe 2 + to Fe 3 + , restoring the tough solid state. By simply tuning the Fe 3 + ‑to‑citrate ratio, mechanical properties and self‑healing efficiency are effectively programmed, navigating the trade‑off between mechanical integrity and healability. Taking advantage of this photosensitivity, the gel serves as a high‑performance bio‑ink for photocuring 3D printing. More importantly, its photo‑tunable adhesion enables an optically modulatable triboelectric nanogenerator (TENG) as an adaptive sensor. The gel acts as an intelligent triboelectric layer whose output signals are dynamically tuned by light, achieving a peak power density of ∼2.6 nW/cm 2 . This work demonstrates the gel's potential in wearable e‑skin for motion monitoring and robotic tactile perception, establishing a versatile platform from fundamental dynamic chemistry to functional device integration for next‑generation adaptive soft electronics.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2026
·Vol. 41
·期 3
·828-833
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IF 1.4
Guo Jun,Huang Biwu,Huang Wenbin,Wu Yang
A novel epoxy-based silicon (VECSR) was synthesized from polymethylhydrosiloxane (PMHS) and 1,2-epoxy-4-vinylcyclohexane (VEC) via the hydrosilylation reaction. The structure of VECSR was characterized by FT-IR and 1 H-NMR. A series of UV-curable materials were prepared by blending different ratios of VECSR and alicyclic epoxy resin (2021P) and UV curing with triarylsulfonium hexafluoroantimonate salts solution (UVI-6976) as the photoinitiator, and then were tested for performance. The experimental results showed that when the content of VECSR was 10%, the comprehensive mechanical properties of the UV-curable material were the best, i e , the UV-curable sample with a tensile strength of 48.55 MPa, an elongation at break of 3.2%, the UV-curable film with a flexibility of 3 mm, and an impact strength of 20 kg·cm. Compared to a single 2021P system in the absence of VECSR, the UV-curable materials containing VECSR exhibited better hydrophobicity and thermal stability.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.8
Xi Li,Jia Long,Yiyang Qin,Jiyuan He,Renjie Yang,Guimei Dong
This study systematically investigated the adsorption of polycyclic aromatic hydrocarbons (PAHs) (naphthalene (NAP), phenanthrene (PHE), benzo[ ghi ]perylene (BghiP)) on UV-aged polyvinyl chloride (PVC) microplastics (MPs) in single/coexistent systems, clarifying their competitive adsorption mechanisms via macroscopic experiments and microscopic spectroscopy. UV aging modified PVC's physical structure and enhanced its PAHs adsorption capacity. The adsorption process may be jointly controlled by physical pore filling and interfacial chemical interactions, and the relative contribution of the latter tends to increase after UV aging. In competition, adsorption affinity followed BghiP > PHE > NAP (matching hydrophobicity) with pore-filling as a key factor. Two-dimensional correlation spectroscopy (2D-COS) revealed different response priorities of C Cl and C H bonds in single and competitive adsorption systems, and selective Cl-π polar coupling between polarized C Cl bonds and PAH conjugated planes further governs the benzene-ring vibration response sequence: BghiP > NAP > PHE. UV aging regulates the adsorption pathways and kinetics of PAHs on PVC MPs but does not alter the competitive priority determined by PAHs' intrinsic physicochemical properties. These findings provide new insights into the composite pollution behavior and ecological risks of MPs in natural environments.
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PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
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2025
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IF 3.2
Li Die,Wang Ting,Zhao Ruike,Wang Weiqun,Zhang Yu,Long Ai,Bi Haojie,Wang Hanying,Wang Daoshuang,Shi Jingpei,Li Yupeng,Lyu Lechun
Post-inflammatory hyperpigmentation (PIH) is a reaction process caused by an increase in melanin or abnormal melanin distribution due to inflammatory skin diseases, skin disease treatments, and external stimuli. Ultraviolet radiation can exacerbate PIH. It stimulates melanocytes, increases melanin production and deposition, and deepens the color and prolongs the duration of PIH. This study aims to investigate the inhibitory effects of Coelonin, an extract from Dendrobium officinale, on melanin production and its underlying mechanisms. Through molecular docking analysis, we found that Coelonin has significantly stronger binding capabilities to tyrosinase (TYR) and melanocortin 1 receptor (MC1R) than kojic acid, a well-known whitening agent. This stronger binding ability suggests that Coelonin may inhibit melanin production by regulating the activity of melanin metabolism-related proteins, thereby exerting its whitening effect. Compared with kojic acid, Coelonin demonstrates superior binding characteristics at the molecular level, providing stronger evidence for its potential as a whitening active ingredient. In cell experiments, Coelonin had no significant effect on the proliferation of B16-F10 melanoma cells within the concentration range of 20–40 µM, but it could significantly reduce the intracellular reactive oxygen species (ROS) levels and inhibit TYR activity and melanin production. Western blot results showed that Coelonin could downregulate the expression of TYR, MITF, TRP-1, and TRP-2 proteins. In in vivo experiments, a guinea pig model of PIH was established by Ablative Fractional Resurfacing CO₂ Laser (AFR CO 2 ) combined with UV-B irradiation. It was found that Coelonin treatment could significantly improve skin pigmentation, reduce melanin granule deposition, and did not cause skin inflammation or hyperplasia and other side effects. This study indicates that Coelonin is an efficient and safe melanin synthesis inhibitor and has the potential to be developed as a plant-derived skin whitening agent.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
·
IF 14.3
Hao Li,Hao-Jie Yan,Hui-Song Hu,You-Lin Zhang,Qin-Hao Zhang,Xian-Ze Meng,Lian-Kui Wu,Fa-He Cao
Ultraviolet (UV) irradiation and coupled environmental degradation cause premature failure of marine coatings, thereby exacerbating metal corrosion processes. Developing coatings that integrate both weather resistance and durability remains a significant yet challenging endeavor. Herein, we report a multifunctional intelligent coating (GO-HHU-T-EP) through the triple synergistic incorporation of graphene oxide (GO), cerium-based metal-organic framework (HHU), and Tinuvin 1130 (T). The GO-HHU-T heterostructure is synthesized via a facile and sustainable strategy. Density functional theory (DFT) and molecular dynamics (MD) simulations reveal that the GO-HHU-T composite with excellent dispersibility significantly enhances the coating’s compactness. Given its UV absorption and radical scavenging mechanisms, GO-HHU-T-EP coating maintains structural integrity with 95.9% and 80.9% retention of tensile strength and interfacial adhesion after UV aging. Furthermore, GO-HHU-T-EP coating confirms outstanding corrosion resistance ( Z f =0.01Hz 6.4 × 10 9 Ω cm 2 ) after 100-day immersion in aggressive solutions, demonstrating a 37647.1 times improvement over EP coating. The intelligent heterostructure enables active protective properties for the GO-HHU-T-EP coating via environmental stimulus responsiveness. Projected density of states (PDOS) indicates that the adsorption mechanism originates from strong hybridization interactions between Fe and Ce/O atom orbitals. This work presents a promising design strategy for next-generation marine coatings that integrate anti-UV aging, mechanical enhancement, active protection, and long-term durability.
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POLYMER DEGRADATION AND STABILITY
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2025
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IF 7.4
Tao Mao,Suhui Xie,Lei Chen,Hang Xiao,Peng Wang
Cellulose aerogel shows huge potential to substitute petroleum-based building insulation materials because of its renewability and biodegradability. However, it is priority to address its low strength, flammability and hydrophilicity. In this work, we synthesized a xylooligosaccharide-derived flame-retardant crosslinker (XS) and fabricated the high-strength, flame-retardant, hydrophobic and UV‐shielding composite aerogel using XS and methyltrimethoxysilane (MTMS). XS and MTMS reacted with cellulose to form dual chemical crosslinking structure during baking and chemical vapor deposition, respectively. The composite aerogel showed low density (19.58 mg/cm 3 ), high porosity (98.76%) and compressive modulus (742.9 kPa). The high strength made it withstand 14800 times its weight without deformation. The composite aerogel achieved outstanding hydrophobic, UV‐shielding and thermal insulation properties. Its water contact angle, ultraviolet protection factor and thermal conductivity were 144.9 o , 1253.1 and 24.6 mW/(m·K), respectively. The satisfactory hydrophobicity also endowed composite aerogel with continuous oil-water separation capability. The isolation effect of P/N/Si-containing polyaromatic char layer and dilution effect of nonflammable gases endowed composite aerogel with excellent flame retardancy. Its LOI value and UL-94 rating reached 34.9% and V-0, respectively. This study provides new ideas for synthesizing biobased flame-retardant crosslinkers and fabricating multifunctional cellulose aerogels for building insulation application.
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WATER RESEARCH
·
2025
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IF 12.4
Mengge Fan,Yangjian Zhou,Jialing Luo,Yanpeng Gao,Junlang Qiu,Xin Yang
With drinking water disinfection techniques evolving from chlorination/chloramination to advanced oxidation processes, the conundrum of disinfection byproducts (DBPs) formation that remains for decades is becoming more challenging. This study focuses on the formation of unknown halogenated coupling byproducts, an important class of DBPs neglected in previous investigations, from UV/Chlorine reaction of phenols in presence of halides. To prioritize the highly toxic compounds, the effect-directed analysis strategy involving nontargeted identification with high-resolution mass spectrometry was utilized. The presence of bromide was found to enhance the formation of known DBPs, total organic halogens, and the overall toxicity of treated water. In contrast, iodide at environmentally relevant concentration exhibited minimal effects on the DBP formation and toxicity. Assisted with density functional theory calculation, a series of halogenated coupling byproducts were identified in the reaction involving bromide. The formation mechanisms of halogenated coupling byproducts consist of halogen substitution, free-radical-mediated electron transfer, hydroxylation, among others. As indicated by computational toxicity evaluation, these halogenated coupling byproducts were surprisingly harmful in human thyroperoxidase activity inhibition and aquatic toxicity. This study provides new insights into the DBP formation during UV/Chlorine reaction, and the findings unveiled the emergence of highly toxic halogenated coupling byproducts especially in presence of halides.
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JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
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2026
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IF 3.6
Jiawei Pan,Jie Cheng,Caili Yu,Xiang Xu,Faai Zhang
To improve the mechanical properties, eco-friendliness, and anti-corrosion properties of waterborne polyurethane (WPU) coatings, a nano-ZnO-modified rosin-based waterborne polyurethane (ZnRWPU) was synthesized via a prepolymerization method. The synthesis involved reacting silane coupling agent KH550-modified nano-ZnO (KH550@ZnO) with rosin-based acrylate glycol diol and isophorone diisocyanate (IPDI). The structure of the polyurethane was characterized by fourier transform infrared (FT-IR) spectra and X-ray powder diffractometer (XRD), ultraviolet spectra (UV–vis) for UV absorption capacity, thermogravimetry (TG) for thermal stability, water contact angle and water absorption for water resistance, and electrochemistry for corrosion resistance of the coating. The results showed that nano-ZnO could effectively improve the hydrophobicity, thermal stability, and UV protection of ZnRWPU, and the corrosion resistance of ZnRWPU in acid alkali and salt corrosion solutions were all increased compared with the RWPU without nano-ZnO. The optimal corrosion resistance was observed when the amount of nano-ZnO was 0.6 wt%. The successful integration of rosin with nano-ZnO modification offers a viable strategy for designing a new generation of high-performance, bio-based WPU coatings. Highlights Enhanced hydrophobicity and water resistance of the coating. Improved UV-blocking capability and thermal stability. Superior corrosion resistance in acidic, alkaline, and saline environments. Optimum overall performance achieved at 0.6 wt% nano-ZnO loading.
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Journal of Materials Chemistry C
·
2026
·
IF 5.1
Jian Luo,Chenkai Jin,Juan Cai,Yan Lei,Juncheng Huang,Chao Fang,Lixin Song,Haining Na,Jin Zhu
Carbon nitride materials are promising for photocatalysis and optoelectronics owing to their earth-abundant composition and tunable electronic structure, yet they often suffer from limited charge separation and poor photothermal stability. However, achieving high-temperature luminescence retention together with long-term UV durability, especially in polymer-processable forms, remains challenging. Here, we introduce a dual-alkali co-doping concept (K/Na) that enables a carbon nitride phosphor with simultaneously improved thermal endurance and UV durability, and we further demonstrate its processability into transparent polymer composites. We report a potassium/sodium co-doped carbon nitride (CN–K/Na) synthesized by a solid-state route using 3-AT, NaOH, and KOH. Structural analyses indicate that K/Na incorporation modulates the local structure of the CN framework, which is consistent with synergistic regulation of defects and charge transport. The co-doped material shows a narrowed optical bandgap (2.23 eV), enhanced photoluminescence, and an increased TRPL lifetime (τ_avg ≈ 1.42 ns, from multi-exponential fitting), and significant thermal stability, retaining 90.8% emission at 475 K and ~75% at 625 K. Under extended UV exposure, the emission exhibits a non-monotonic evolution, reaching 1.7× of the initial intensity and maintaining 43% after 192 h, indicating notable optical durability. When incorporated into a polymer matrix, CN–K/Na effectively suppresses UV-induced degradation of PMMA, maintaining stable emission with minimal spectral drift. The improved UV durability of the composites is consistent with UV attenuation by the filler and reduced photodegradation of the polymer matrix. These results establish K/Na co-doping as a practical and scalable route to robust carbon nitride luminescent materials and UV-durable transparent composites for optoelectronic applications.
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