JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Xinying Gong,Junyi Ma,Yang He,Yuxin Dong,Yuanjun Tong,Jiayu Mao,Mao Li,Dongmei Wang,Zhengjun Gong
As widely used plastic additives, organophosphate flame retardants (OPFRs) widely coexists with microplastics (MPs) in agricultural soil, where MPs could act as carriers, increasing their environmental risk. However, the combined effects of UV aging and soil dissolved organic matter (DOM) on OPFR adsorption to MPs remains unclear. This study investigated the adsorption kinetics and mechanisms of six OPFRs on polyvinyl chloride (PVC) and polystyrene (PS). Results showed that OPFR adsorption positively correlated with their hydrophobicity (log K ow ), dominated by hydrophobic interaction and partition. Kinetic studies indicated chemisorption governed adsorption, following pseudo-second-order kinetics. Upon UV aging, PVC exhibited increased affinity for polar/medium-polar OPFRs (triethyl phosphate, tributyl phosphate, and tris(2-butoxyethyl) phosphate), attributed to hydrophilic microzones formation, while PS preferentially adsorbed non-polar OPFRs (triphenyl phosphate and tris(2-ethylhexyl) phosphate) due to increased surface roughness and abundant binding sites. For soil DOM, it competitively inhibited OPFRs adsorption via hydrogen bonding on PVC but enhanced the OPFRs adsorption on PS through π-π interactions, acting as a molecular bridge. These findings highlight the critical role of polymer type, UV aging, and DOM in regulating OPFRs fate in soil. This will enhance our understanding of the environmental risks caused by the combined pollution resulting from MPs in soil environment.
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高影响因子
Journal of Physical Chemistry Letters
·
2024
·
IF 4.8
Wenfeng Sun,Shaolong Liu,Caizheng Wang,Xiaotao Zu,Sean Li,Xia Xiang
Lead-free perovskites are considered to be candidates for next-generation photodetectors, because of their excellent charge carrier transport properties and low toxicity. However, their application in integrated circuits is hindered by their inadequate performance and size restrictions. To aim at the development of lead-free perovskite-integrated optoelectronic devices, a CsAg2I3/silicon (CAI/Si) heterojunction is presented in this work by using a spatial confinement growth method, where the in-plane growth of CAI microbelts with high-quality single-crystal characteristics is primarily dependent on the concentration of surrounding precursor solution. The fabricated photodetectors based on the CAI/Si heterojunctions exhibit a broad-spectrum detection capability in the ultraviolet–visible–near-infrared (UV-vis-NIR) range. In addition, the photodetectors show good photoelectric detection performance, including a maximum responsivity of 48.5 mA/W and detectivity of 1.13 × 1011 Jones, respectively. Besides, the photodetectors have a rapid response of 6.5/224 μs and good air stability for over 2 months. This work contributes a new idea to design next-generation optoelectronic devices with high integration density.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Wentao He,Hailiang Cao,Xiaoyu Wu,Zhijun Ruan,Xiaotao Wang
Developing full bio-based polyvinyl alcohol (PVA) film with exceptional flame retardancy and improved UV-shielding property remains a major challenge. Here, bio-based phytic acid (PA) and tannic acid (TA) were incorporated into PVA by a simple solution blending method. Due to the inherent flame retardant characteristics and synergistic flame retardant role of PA and TA, the resulting PVA composite film presented outstanding flame retardant performance. Specifically, the PVA/PA/TA film exhibited excellent self-extinguishing behavior, achieving UL-94 VTM-0 level and a high limiting oxygen index of 45.3%. Compared with pristine PVA film, the peak heat release rate and total heat release showed reductions of 57% and 64%, respectively. Furthermore, contributed to the abundant hydrogen bond sites in the molecular structures of PA and TA, multiple hydrogen bond networks were constructed. The elongation at break of PVA/PA/TA film improved to 250.2% from 153.0% for PVA film, increasing by 63.5%. Additionally, due to the UV absorbing functional groups existing in PA and TA, the PVA/PA/TA film presented enhanced UV-shielding property. This work paves the way for fabricating advanced PVA films for packaging and electronics by a simple, sustainable and effective approach.
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NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Zhiru Suo,Fushun Li,Yanjun Zhao,Yuan Zhuang,Binbin Huang,Chen Qu,Yifan Ren,Wenhui Li,Chuandong Wu,Jiemin Liu
The discharge of antibiotics into the environment has emerged as a pressing global issue. In particular, the removal of refractory mixed antibiotics requires advanced technologies with high adsorption efficiency and powerful degradation ability. In this study, we synthesized a heterogeneous core–shell Fe3O4@C catalyst as an efficient microreactor for adsorbing and degrading mixed antibiotics of sulfadimidine (SM2) and enrofloxacin (ENR) in aqueous solution under UV–Fenton conditions. The effects of different experimental conditions on the removal of antibiotics were investigated through L9(43) orthogonal experiments, and the synergistic effect and degradation mechanisms were systematically revealed. The results showed that the Fe3O4@C Fenton system demonstrated significantly enhanced catalytic activity, with hydroxyl radical (OH˙) concentrations of approximately 6.2 and 6.7 times higher than those observed in the Fe3O4 and Fe3O4 + AC Fenton systems, respectively. Moreover, the degradation pathway and mechanism analysis revealed that the adsorption and degradation behavior of the two mixed antibiotics in the Fe3O4@C Fenton system could be better described using pseudo-secondary kinetic models. The substantial improvement clearly indicates that the Fe3O4@C composite serves as a highly efficient microreactor for H2O2 decomposition in the Fenton process, thus providing a new avenue for the degradation of mixed antibiotics in water.
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Journal of Coatings Technology and Research
·
2026
·
IF 3.4
Chen Linyang,Xing Zheng,Liu Weiwei,Luo Jing
In this article, a series of acrylic ester copolymer hyperdispersants with different chemical structures (anchoring segments and solvated segments) were designed and synthesized by free radical polymerization and used to disperse mica in UV-curable systems. The influence of anchoring segments and solvated segments of the polyacrylic hyperdispersant on the dispersion of mica in UV-curable coating as well as the coating properties was systematically investigated. The dispersion performance of the hyperdispersants was investigated by rheology measurement, mechanical property, and anticorrosion property (via electrochemical impedance spectroscopy and neutral salt spray test) of the UV-curable coatings. It was found that the optimum anchoring segment and solvated segment of the polyacrylic hyperdispersant for dispersing mica in UV-curable systems were N-isopropylacrylamide (NIPAM) and butyl methacrylate (BMA), respectively. With the addition of p(BMA- co -NIPAM), the viscosity of the UV-curable resin system with mica decreased obviously. Moreover, the negative effect of mica on the mechanical properties of the UV-curable coatings was significantly mitigated, and the coating exhibited outstanding anticorrosion performance. The electrochemical low-frequency impedance value of the coating remains above 10 9.0 Ω cm 2 for 40 days without any decrease. After 1,200 h of neutral salt spray testing, only slight pitting corrosion was observed on the coating surface.
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PLANT CELL TISSUE AND ORGAN CULTURE
·
2026
·Vol. 165
·期 1
·12
·
IF 2.8
Erst Anna A.,Kotsupiy Olga V.,Tomoshevich Maria A.,Banaev Evgeny V.
For the first time, a mixoploid plants and callus cultures of Rhodiola rosea L. were established. Flow cytometry analysis revealed that seed treatment with 1000 µM colchicine for 24 hours induced mixoploidy in 30% of the samples, while the remaining 70% remained diploid. The combination of 5 µM thidiazuron and 5 µM α-naphthaleneacetic acid resulted in a 100% callus induction rate from cotyledonary leaves and supported callus growth up to 50 g/L dry weight. The phenylpropanoids identified in the rhizomes of in vitro plants (control, 2n) were rosavin, rosin, unidentified phenylpropanoids (PP1, PP2, and PP3), and cinnamyl alcohol. In the mixoploid calluses, the same phenylpropanoids were detected, with the exception of PP1. In the diploid calluses, no phenylpropanoids were detectable within the sensitivity limits of the analytical method used. ANOVA confirmed the significant influence of both UV exposure and cinnamyl alcohol concentration on phenylpropanoid accumulation in mixoploid calluses, with levels reaching up to 484 mg/100 g dry weight. Rosin was identified as the major phenylpropanoid in mixoploid calluses under standard conditions. However, after 72 hours of UV irradiation and cinnamyl alcohol supplementation, PP3 became the dominant compound. This study demonstrates that combining polyploidization, biotransformation, and elicitation is a promising alternative strategy for enhancing metabolite production in Rhodiola rosea cell cultures. Moreover, the targeted application of these stress factors can serve as a tool for ‘metabolic engineering’ in its callus culture. This approach may facilitate the sequential scale-up of metabolite biosynthesis in bioreactors to meet industrial demands.
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高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Sung-Hyo Jung,Sung-Hak Hong,Heejin Yang,Chang-Gu Lee
UV 222 /hBN exhibited 3-fold higher k PFOA than UV 254 /hBN under equal UV fluence. • UV 222 induced relatively higher C hole than UV 254 with strengthened light activity. • Acidic pH enhanced PFOA adsorption and hole utilization particularly under UV 222 . • UV 222 /hBN demonstrated greater robustness against water matrices than UV 254 /hBN. Hydrophobic hexagonal boron nitride (hBN) has attracted attention as a promising material for the UV-C light-driven photocatalysis of aqueous per - and polyfluoroalkyl substances (PFASs). Far UV-C light centered at 222 nm (UV 222 ) could provide a suitable irradiation source for contending wide band gap of hBN, serving as an alternative to conventional 254 nm UV-C (UV 254 ). This study investigated the first application of a KrCl lamp emitting UV 222 in combination with hBN to degrade perfluorooctanoic acid (PFOA) and compared it with UV 254 under equal UV fluence. UV 222 demonstrated superior hBN activation performance, with UV 222 /hBN exhibiting a higher PFOA degradation rate constant and more extensive chain shortening and defluorination than UV 254 /hBN. These enhancements were attributed to the higher light absorbance of hBN under UV 222, supported by the higher photocurrent response, as well as contributions from direct photolysis. Photogenerated holes were identified as the main reactive species, and their concentration was estimated to be 2.7 times higher in UV 222 /hBN than in UV 254 /hBN. Notably, acidic pH conditions enhanced PFOA adsorption, thereby promoting hole utilization, and the photocatalytic promotion effect was more pronounced under UV 222 than under UV 254 . Moreover, the inhibitory effect of natural water matrix components, including inorganic ions and natural organic matters, was also minimal in UV 222 /hBN. This study demonstrated that far UV-C serves as an effective hBN activation source, offering a viable engineering strategy for the photocatalytic treatment of PFASs. Download: Download high-res image (124KB) Download: Download full-size image
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POLYMER DEGRADATION AND STABILITY
·
2026
·
IF 8.1
Jiaqi Geng,Ruiping Wang,Jiajia Zhang,Siqi Huo,Miaojun Xu,Zhiyong Zhang,Zhichao Tian,Bin Li
Polypropylene (PP) is highly flammable and prone to ultraviolet (UV) aging, limiting its durability. Conventional intumescent flame retardants (IFR) require high loadings (20-30 wt%), which deteriorate mechanical properties. Herein, a low-basicity N-alkoxyamine compound (CDMP) is designed as a multifunctional synergist for IFR-modified PP. With only 0.3 wt% CDMP and 19.7 wt% IFR, the composite achieves a limiting oxygen index (LOI) of 33.0% and a vertical burning (UL-94) V-0 rating, while reducing total heat release (THR) and total smoke production (TSP) by 22.2% and 37.6%, respectively. After 120 h UV exposure, the composite shows minimal surface damage and a lower carbonyl index growth rate (87.2% of neat PP), indicating enhanced UV resistance. Meanwhile, elongation at break and impact strength are significantly improved compared to PP/IFR. Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) analysis reveals that CDMP generates nitroxyl radicals, which quench free radicals during both photo-oxidation and combustion. This synergy between IFR and CDMP enables simultaneous enhancement of flame retardancy, UV stability, and mechanical performance in PP.
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Bao Guo,Hongjun Kang,Huiyang Zhao,Xinzhi Wang,Yang Li,Songtao Lu
Low-adhesion superhydrophobic coatings have been considered an effective strategy for mitigating dust accumulation on photovoltaic surfaces, while their long-term outdoor stability under ultraviolet irradiation remains a major challenge. In this work, a dense fluorocarbon layer was deposited onto a SiO 2 –ZnO composite coating by magnetron sputtering to construct a transparent and UV-resistant superhydrophobic dust removal surface. The as-prepared SZ/CF coating exhibits a high water contact angle of 162.8°, a dust removal efficiency of 99.14%, and an average transmittance of 89.67%. After 300 h of UV-B accelerated aging, the coating still maintains superhydrophobicity (150.8°) and high dust removal efficiency (97.01%), demonstrating excellent ultraviolet durability. Mechanistic analysis indicates that the formation of a three-dimensional cross-linked fluorocarbon network suppresses photo-oxidation and preserves the integrity of the low-surface-energy interface. This work provides an effective strategy for developing durable transparent superhydrophobic coatings for long-term photovoltaic dust removal applications.
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高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Ge Hongwei,Liu Fanqi,Mo Wenjie,Shen Rongji,Zhou Li,Zeng Yanning
Epoxy vitrimers combining recyclability
with advanced
functional
properties represent a key direction for sustainable high-performance
polymers. Herein, we report the design and synthesis of biobased epoxy
vitrimers derived from biobased epigallocatechin gallate (EGCG), a
major green tea polyphenol. An EGCG-based epoxy monomer (EGCG-EP)
was synthesized and subsequently cross-linked with a bifunctional
thiol-containing cross-linker via epoxy-thiol “click”
chemistry, producing a series of epoxy vitrimers (EGB- x ). The abundant aromatic structure of EGCG imparts exceptional multifunctional
properties, including intrinsic flame retardancy (UL-94 V-0 rating,
LOI up to 28.5%), broad-spectrum UV-blocking (full shielding in the
200∼400 nm range), strong antioxidant activity (radical scavenging
efficiency >95% within 10 min), and effective antibacterial activity
against both Staphylococcus aureus and Escherichia coli . Meanwhile, the dynamic boronic
ester bonds enable rapid stress relaxation, efficient self-healing
(95% efficiency), and complete reprocessability under mild conditions
without compromising mechanical performance. The EGB- x also exhibits excellent thermal stability, solvent resistance, and
chemical recyclability, allowing for nondestructive recovery of carbon
fibers from its composites.
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COMPOSITES PART B-ENGINEERING
·
2026
·
IF 14
Tongjun Yang,Rongli Li,Mingtao Ding,Lihua Zhang,Haibo Xie
The development of mechanically robust, antimicrobial, and UV-shielding poly(lactic acid) (PLA) film is highly desired as food packaging materials. Herein, aldehyde-functionalized chitin nanocrystals (ChNCs-PVMA) with immobilized AgNPs (Ag@ChNCs-PVMA), were prepared and applied as multi-functional biomass-based nanofillers for PLA. The surface-grafted poly(vanillin methacrylate) (PVMA) chains not only effectively improve the interfacial interaction between the nanocrystal and PLA, but also act as reductant and stabilizer for the in situ synthesis of AgNPs by the abundant aldehyde groups. The incorporation of Ag@ChNCs-PVMA nanofillers into PLA matrix displays reinforcing, antimicrobial, and UV-shielding functions. The PLA/Ag@ChNCs-PVMA-5 film achieves complete absorption of UVC (200-275 nm) and UVB (275-320 nm), and ∼90% absorption at the region of UVA (320-400 nm), while maintaining good transparency. Furthermore, the PLA/Ag@ChNCs-PVMA-5 film exhibit excellent antimicrobial activity against E. coli and S. aureus . These interesting results support the composite films to be applied in food packaging, demonstrating prolonged preservation time of strawberries.
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2026
·
IF 7.1
Jian Gao,Jialong Wang,Jiejin Song,Yue Xing,Yuzhao Hou,Fengchao Wang,Jinghui Du,Jiang Wu,Liming Wang
The illegal addition of statins to tea-based products presents significant analytical challenges due to the complexity of the matrices involved. To address these challenges, we developed an ionic liquid-assisted magnetic solid-phase extraction (IL-MSPE) method coupled with HPLC-UV for the simultaneous determination of five statins. This protocol facilitates the rapid batch extraction of analytes within 6 min. The method demonstrated excellent linearity (R 2 ≥ 0.999, 0.1 to 20 μg/mL) and sensitivity, with limits of detection ranging from 0.022 to 0.054 μg/mL, and recovery rates between 89.2% and 117.5%. Density functional theory provided insights into a synergistic “dual-site” recognition mechanism, which is driven by π–π stacking, hydrogen bonding, and electrostatic interactions. Importantly, the method's compliance with green chemistry principles was validated by AGREE (0.77) and MoGAPI (90) metrics. Overall, this proposed workflow represents a reliable and high-throughput tool for monitoring unauthorized statin adulteration.
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