JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Xueyun Wei,Lanrui Yang,Zhuomin Zhang,Gongke Li
Trace disinfection by-products (DBPs) in aquatic products may have serious impact on human health via direct or indirect consumption. However, the accurate and sensitive quantification of trace chlorophenol DBPs in complex aquatic products still remains a great challenge. In this work, the defective MIL-101(Fe)-NH 2 enrichment medium was prepared for developing a selective membrane solid phase extraction (M-SPE) technology for quantifying trace chlorophenol DBPs in fish, coupled with high performance liquid chromatography-ultraviolet-visible spectroscopy (HPLC-UV). The established analytical method showed good selectivity, sensitivity and accuracy, achieving the limits of detection from 0.03 to 0.15 ng/mL and the recovery from 80.0% to 117%, achieving sensitivity comparable to that of HPLC-mass spectrometry (MS)-based methods. The validated method was successfully applied to quantify chlorophenol DBPs in grass carp and crucian carp, offering a selective and sensitive alternative for monitoring chlorophenol DBPs in fish, with practical advantages for routine analysis via compatibility with widely available HPLC-UV.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Mengmeng Zhang,Zhihui Sui,Qi Zhang,Longyu He,Bingchi Zhang,Bin Zu,Fang Hu
In this study, a multifunctional waterborne polyurethane (WPU) coating was prepared via a one-pot method to impart flame retardancy, hydrophobicity, antibacterial activity, UV resistance, and enhanced mechanical strength. The WPU system was functionalized with bis-hydroxypropyl fluorosiloxane (HPFSi), hydroxyl-terminated oligophosphate (Exolit OP550), and curcumin, successfully yielding a stable, multi-component curcumin/Exolit OP550/fluorosilicone-modified WPU (CPFSiWPU) emulsion. This emulsion was subsequently applied to hemp fabrics, which then underwent systematic characterization and performance evaluation. The CPFSiWPU coated hemp fabric exhibited outstanding flame-retardant performance, with a limiting oxygen index (LOI) of 36% and an 86.5% reduction in the peak heat release rate (PHRR). The material also demonstrated significant antibacterial efficacy against S. aureus and E. coli , attributable to the incorporation of curcumin. Furthermore, it achieved a high ultraviolet protection factor (UPF) of 51.2 and pronounced hydrophobicity, with a water contact angle of 147.03°. Notably, substantial enhancements in mechanical properties were observed, including increases in breaking strength (277 N in the warp direction and 272 N in the weft) and breaking elongation (25.4% in the warp and 26.9% in the weft). Importantly, the coated fabric's bending rigidity was significantly reduced by 21.8%, while the static and dynamic friction coefficients decreased by 56.4% and 50.5%, respectively, indicating a substantial improvement in softness and hand feel. This work presents a highly promising strategy for multifunctional textile finishing, thereby significantly enhancing the functional value and practical applicability of hemp fabrics.
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Journal of Coatings Technology and Research
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2026
·
IF 3.4
Jiang Ziqing,Zhang Pingbo,Fan Mingming,Jiang Pingping,Chen Shijun
Biomass-derived vanillin and ethylenediamine were used as raw materials to synthesize Schiff base chain extenders, which were then incorporated into waterborne polyurethane (WPU) systems to fabricate a series of multifunctional composite films (VWPUs) with tunable Schiff base contents. Research results indicate that all VWPU films exhibit excellent mechanical properties, self-healing capabilities, significant UV resistance, and moderate thermal stability. Among them, the VWPU-2 film demonstrated the best repair effect. Benefiting from the dynamic reversible nature of the Schiff base bond (C=N), the material achieved noticeable healing of surface scratches after 2 h of static storage at 60 °C. After 6 h of repair, the mechanical property self-healing efficiency reached 93.5%. Furthermore, the aromatic ring and phenolic hydroxyl structure in vanillin molecules enhance the polyurethane film's absorption capacity in the 280–400 nm wavelength range, resulting in reduced UV transmittance. This study provides a novel and sustainable design approach for constructing multifunctional water-based polyurethanes with both self-healing and UV resistance, where Schiff base dynamic bonds and vanillin-derived functional groups synergistically realize self-healing and UV resistance, opening new avenues for the development of high-performance, eco-friendly polymer materials. Graphical
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ENVIRONMENTAL RESEARCH
·
2025
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IF 7.7
Xiang-mei Zhong,Xiang Fu,Yu-qiong Gao,Yang-yang Liu,Xue-ting Ren,Ji-yue Li,Lei Li,Nai-yun Gao
This study comparatively investigated the degradation kinetics and mechanisms, changes in toxicity, and formation of disinfection byproducts (DBPs) for two pharmaceutical contaminants (PCs), emtricitabine (FTC) and trimethoprim (TMP), using the medium-pressure UV/nitrate (MPUV/NO 3 − ) process. Alkaline conditions markedly enhanced direct MPUV photolysis of both FTC and TMP, with FTC being more susceptible than TMP. The presence of 2 mM NO 3 − enhanced degradation rate (k obs ) by 1.2–2.3-fold for FTC and 1.8–10.8-fold for TMP under MPUV across different pH conditions, attributed to •OH and reactive nitrogen species (RNS) generation. Under the MPUV/NO 3 − process, both FTC and TMP showed a decrease in k obs with increasing pH. Their k obs initially increased with NO 3 − concentration but plateaued at higher levels. Structural differences led to distinct reactive species dominating FTC and TMP degradation. Anions and humic acid inhibited FTC and TMP degradation to varying degrees. Based on LC/TOF/MS analysis and DFT calculations, the cytosine moiety in FTC and the pyrimidine ring in TMP were identified as vulnerable sites, leading to the proposed degradation pathways. Most FTC transformation products showed increased developmental toxicity but decreased mutagenicity. Nitrated TMP products exhibited notably higher developmental toxicity. The Vibrio fischeri inhibition assay showed that the MPUV/NO 3 − process had the ability to control toxicity. Pretreatment with MPUV/NO 3 − enhanced the formation of trichloronitromethane during post-chlorination. Additionally, chloramination outperforms chlorination in controlling DBPs formation and their associated toxicity. Overall, this study provides critical insights into the transformation pathways and ecological risk assessment of PCs in nitrate-rich wastewater under polychromatic UV irradiation.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Jingxuan Yang,Dongxu Qu,Jue Wang,Yangtao Wu,Lingjun Bu,Yuanxi Huang,Shiqing Zhou
The N-Br bond in monobromoamine (NH 2 Br) can be cleaved by UV irradiation to generate Br • and subsequently HO • , resulting in an advanced oxidation condition (i.e., UV/NH 2 Br). This study investigated the degradation of six contaminants of emerging concern (CECs) in the UV/NH 2 Br process, including the phenolic hydrocarbons phenol and bisphenol A (BPA), the amines aniline and sulfadiazine (SDZ), and the persistent organic pollutants ibuprofen (IBP) and carbamazepine (CBZ). The results showed that UV/NH 2 Br process significantly improved the degradation of CECs following pseudo-first order kinetics, and the degradation of CECs was enhanced with the increase of NH 2 Br dosage. UV/NH 2 Br was more efficient in degrading CECs containing phenolic hydroxyl groups (100 %), followed by those containing amine groups (> 95 %). The degradation efficiency was influenced by the pH value and was highest at pH 7. It was found that low concentrations of Cl − (< 0.5 mM ) and HCO 3 − (< 0.5 mM) promoted the degradation of SDZ and IBP, but further increases in Cl − and HCO 3 − (0.5 ∼ 5.0 mM) resulted in inhibition. SDZ and IBP degradation was inhibited by photo absorption competition and free radical depletion in natural organic matter and actual water. Probe experiments showed that reactive bromine species (RBS), reactive nitrogen species (RNS), and hydroxyl radical (HO • ) played a dominant role in CEC degradation. During the degradation of IBP by UV/NH 2 Br, hydroxylation, bromination , and quinylation were proposed as the primary reaction mechanisms. As compared to HOCl disinfection, NH 2 Cl disinfection after the UV/NH 2 Br process produced lower concentrations of disinfection by-products (DBPs).
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 16
·7722-7732
·
IF 3.3
Liran Tian,Xiangwei Song,Tianjiao Liu,Anfeng Li,Yang Ning,Xiuyi Hua,Deming Dong,Dapeng Liang
Based on the specific identification ability of aptamers towards a target, a combined UV-Visible with fluorescence detection method for acetamiprid was designed. In the absence of acetamiprid, AuNPs were uniformly distributed and had a good quenching ability for Rhodamine B's fluorescence at a higher NaCl concentration. In the presence of acetamiprid, a few AuNPs lost their protective effect and aggregated, meanwhile, the absorption peak of the UV-vis spectrum gradually redshifted from 520 nm to 680 nm. Additionally, the quenching effect of AuNPs on Rhodamine B was diminished when aggregation took place. Thus the presence of acetamiprid could be clearly determined using a UV-vis or fluorescence method. The combination of the two routes had a wider detection range and a detection limit as low as 0.0559 μM. This method was successfully used to determine acetamiprid in spiked lake water samples and would be a potential simple method for the determination of acetamiprid residues in natural water bodies.
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INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Ning Zhang,Wenda Wang,Man Zhou,Yuanyuan Yu,Ping Wang,Qiang Wang
The development of multifunctional, stable, and secondarily reactive surface coatings is highly desirable, regardless of the surface structure and chemistry of the textile. However, it has remained a great challenge until now. Commonly used strategies for textile surface functionalization are limited to certain types of fibers or weak and unreliable surface bonds, as well as colored surfaces. Herein, a supramolecular assembly strategy involving phase-transited lysozyme (PTL) and tannic acid (TA) is proposed, which can be used to functionalize various textiles through simple padding and drying. This coating has been shown to withstand 50 washing cycles and 100 rubbing cycles. The PTL/TA coating not only effectively improves the antibacterial properties of textiles (with a 99% bacteriostatic rate), but also enhances UV resistance and antioxidant properties. Additionally, the PTL/TA coating can serve as a secondary reaction platform to prepare X-PTL/TA@fabrics with various functionalities. For instance, sol-gel functional finishing can be employed to achieve hydrophobic modification of fabrics. Furthermore, electroless deposition of Cu on the coating surface can impart infrared stealth and electromagnetic shielding properties to the fabric. PTL/TA coatings exhibit promising practical application prospects as a bridge between various textiles and multifunctionality.
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Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 26
·8971-8981
·
IF 6.4
Zheng Yuan,Jun Yan,Feng Gao,Jue Cheng,Junying Zhang
It is a challenge to develop polyurea with high-performance and multifunctionality because the integration of functions often comes at the expense of mechanical properties. This work synthesized a novel diisocyanate with a pyrene side chain, followed by reacting with poly(propylene oxide) diamine to prepare polyurea elastomers (PPU-x). Herein, thanks to the strong π–π stacking effect between pyrene groups and the anchoring effect of the amino group, the maximum tensile strength of PPU-x reached 41.4 MPa. The large conjugate structure of pyrene groups also gave PPU-x outstanding fluorescence and UV shielding performance. More noteworthy is the fact that graphene can be well dispersed in PPU-x with such high polarity via π–π interactions, which caused the dielectric constant of graphene-modified PPU-x nanocomposites to be three times that of PPU-0.3. Furthermore, this nanocomposite was used to make a triboelectric nanogenerator. Under the action of 0.5 N, the output voltage can reach 80 V, which is expected to be used to monitor weak signals of the human body. This work opens up a new strategy for the development of high-performance polyurea and its graphene-modified multifunctional polyurea nanomaterials with wide potential applications.
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Journal of Water Process Engineering
·
2023
·
IF 7
Wei Zhang,Qing Long,Guifeng Li,Zigong Ning,Lu Lu
Hydrated electron reduction in an ultraviolet (UV)-sulfite system and electrochemical oxidation on a boron doped diamond (BDD) anode both are efficient processes for the degradation of perfluorooctanoic acid (PFOA). However, hydrated electron reduction has inherent deficiency in the mineralization (i.e., converting organic carbon into CO 2 ) of PFOA. Furthermore, toxic byproducts such as partially hydrodefluorinated carboxylic acids (HDCAs) and perfluorosulfonic acids (PFSAs) might give secondary pollution if the wholly hydrodefluorination of PFOA is not achieved. BDD electrochemical oxidation can obtain a high mineralization efficiency, but it leads to a low defluorination (i.e., transforming C−F bonds into F − ions) efficiency due to the generation of toxic volatile fluorinated alkanes. Herein, we report a coupled process that is hydrated electron reduction as pre-treatment and BDD electrochemical oxidation as post-treatment to achieve a complete defluorination and mineralization of PFOA, the results demonstrate that 50 mg/L PFOA can be 100 % deluorinated and mineralized under 5 h UV-sulfite reduction followed by 10 h electrochemical oxidation. This coupled process strongly inhibits the production of the toxic volatile fluorinated pollutants and quickly converts the residual toxic sulfite in UV-sulfite system to the sulfate. Mechanism investigation demonstrates that BDD oxidation is able to transform HDCAs and PFSAs formed by hydrated electron reduction to the perfluorocarboxylic acids (PFCAs) with shorter carbon chain than PFOA, which can be further defluorinated and mineralized.
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POLYMER TESTING
·
2022
·
IF 4.931
Yuan Nie,Ruitong Liu,Na Yao,Tianxiang Deng,Ruyu Yan,Shouhai Li,Mei Li,Xiaohua Yang,Haiyang Ding,Lina Xu
Novel functional dynamic covalent-bonded polymer networks (DCPN) containing dynamic disulfide bonds were prepared from castor oil via a simple process. Firstly, UV-curable castor-oil-based polyurethane acrylate (COPUA) containing disulfide bonds and unsaturated double bonds was synthesized, then added with glycidyl methacrylate (GMA) to reduce viscosity (named COPUA-GMA) and mixed with different proportions of glycidyl esters containing unsaturated double bonds to form a series of UV-cured polymers named COPUA-GMA-EP. FTIR and NMR demonstrated the target pre-polymers and DCPNs were successfully synthesized. The DCPNs possessed controllable mechanical properties. Tensile tests showed the polymers had a range of tunable stiffness and flexibility. The COPUA-GMA-EP-2 copolymerized system containing 50 wt% COPUA-GMA had relatively excellent tensile strength of 11.8 MPa and elongation at break of 72.3%. Thermal analysis showed that DCPNs had excellent thermal stability, and COPUA-GMA-EP-2 had higher crosslinking density. Importantly, COPUA-GMA-EP-2 displayed excellent shape memory properties with Rf of 98.9% and Rr of 79.0%. Meanwhile, this DCPN exhibited certain self-healing properties. The DCPNs will be widely applied with good prospects owing to their excellent UV-curable, eco-friendly and shape memory properties.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Xiaoquan Li,Fuping Bian,Shi Li,Xuefeng Gui,Mingfeng Yao,Jiwen Hu,Shudong Lin
UV-curing technology is an efficient, energy-saving and eco-friendly technology, which has been widely used in industrial production and daily life. However, UV curing is difficult to achieve with thick coatings, coloured coatings, and shadowed regions of coatings, which greatly limits the applicability of this process. As reported herein, UV/moisture dual curable siloxymethyl-modified silicone acrylate (SMSA) prepolymers were synthesized through the two-step sequential hydrosilylation of pentaerythritol tetraacrylate (PETTA), hydride-terminated polydimethylsiloxane (H-PDMS) and trimethoxysilane (TMOS). The prepolymer contains UV-curable acrylate groups and moisture-curable siloxymethyl groups, and thus it can be readily cured via exposure to UV light , moisture, or a combination of UV light and moisture. Combining the advantages of UV and moisture curing, the prepolymer is capable of curing rapidly and overcomes the problem of UV curing about shadowed areas and thick coatings. This combined UV/moisture dual curing process also solves the problem of oxygen inhibition and poor adhesion of conventional UV-curable silicone materials. The properties of UV/moisture dual cured coatings were characterized and found to exhibit excellent transparency, heat resistance , as well as hydrophobicity . The transparencies of these coatings are over 93% even the thicknesses are up to 100 µm. The coatings remain stable when temperatures reach up to 296.5 and 317.2 °C. The water contact angles of coatings are between 97° and 103°, and surface energies of the coatings vary from 25.43 to 21.27 mN/m. The UV/moisture dual cured coatings also have excellent resistance to smudge and fingerprints. Therefore, they will be suitable for the preparation of anti-smudge and anti-fingerprint coatings.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Guolin Zheng,Yifan Cui,Zhe Jiang,Man Zhou,Yuanyuan Yu,Ping Wang,Qiang Wang
Surface hydrophobicity is generally created by lower surface energy materials. However, it is predictable. Simultaneously, it is rare to construct a self-healing surface hydrophobicity using hydrophilic materials, which is an emerging and significant aspect. Herein, we for the first time fabricated the unpredictable surface hydrophobicity on the cotton fabric surface by utilizing chitosan and tannic acid (labelled as Cot@PTA@PTA-CS), in which chitosan played the decisive role. Interestingly, the surface hydrophobicity of Cot@PTA@PTA-CS could be recovered under the heating treatment. Notably, using the hydrophilic materials realizes the unpredictable surface hydrophobicity with self-healing characteristics, which is an advanced work in contrast to the conventional predictable surface hydrophobicity created by fluorine-free hydrophobic or fluorinated materials. Then, Cot@PTA@PTA-CS was treated with polydimethylsiloxane to obtain surface superhydrophobicity, regarded as Cot@PTA@PTA-CS@PDMS. Cot@PTA@PTA-CS@PDMS and Cot@PTA@PTA-CS all exhibited good hydrophobicity after mechanical abrasion. Moreover, Cot@PTA@PTA-CS@PDMS exhibited good repellency to 95 °C water, diiodomethane, ethylene glycol, and dimethyl sulfoxide. So, the surface free energies of modified cotton fabrics were calculated. Besides, the modified cotton fabrics also possessed excellent UV resistance, anti-oxidation activity, photothermal effect, and self-cleaning. Finally, Cot@PTA@PTA-CS@PDMS was used for the high-efficient oil/water separation. Briefly, this work provides a novel and feasible strategy for creating unpredictable surface hydrophobicity with self-healing performance by chitosan and tannic acid, inspiring more scholars to fabricate hydrophobic surface by hydrophilic materials.
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危险品化学品经营许可证（带存储）