JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2024
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IF 4.1
Duanyang Wu,Shengnan Zhang,Jing Xu,Wei Cheng
Carbamazepine (CBZ) is a ubiquitous persistent micropollutant in water. This study evaluated the degradation of CBZ by UV/Chlorine process. The influencing factors, such as chlorine dosage, solution pH, and water matrix constituents (Cl − , HCO 3 – and NOM) on CBZ removal were systematically investigated. The reactive HO•, Cl• and ClO• species were mainly responsible for the degradation of CBZ, and their contributions determined by probes (Benzoic acid, Nitrobenzene and 1,4-Dimethoxybenzene) varied with pH. Theoretical quantum calculations involving a total of 79 transition states suggested that HO• attack CBZ by hydrogen atom transfer (HAT) and radical adduct formation (RAF) mechanisms, while Cl• and ClO• proceed mainly through HAT and RAF mechanism, respectively. The reaction rates between CBZ and free radicals were calculated by evaluating the energy barriers and transition states. Furthermore, the proposed formation pathways and reaction mechanisms of main hydroxylated products and chlorine substituted products were unequivocally authenticated by transition states calculations. Overall, this study combined experimental and computational approaches to provide an in-depth degradation mechanism of CBZ in UV/Chlorine process.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2024
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IF 4
Caiyun Liu,Siye Gao,Jialin Ma,Yongliang Lu,Mario Prejanò,Yunkui Li
Increasing consumer demand for high-quality wines required the introduction of more comprehensive monitoring indicators for quality management, necessitating winemakers to strive for rapid, real-time, and affordable monitoring tools during winemaking. This study investigated the feasibility of cost-efficient and easy-to-implement ultraviolet-visible (UV-Vis) spectroscopy combined with chemometric methods to predictively monitor the evolution of wine color and phenolics throughout commercial fermentation. Fermentations on a winery scale were carried out with a daily analysis of the UV-Vis spectra, color, and phenolics. Furthermore, characteristic wavelengths were established by a self-compiled Python program to reduce redundancy in spectra. The optimized partial least squares (PLS) model predicted well with a residual prediction deviation (RPD) greater than 2.54, and the robustness was further verified by a robust external Bland-Altman method. UV-Vis spectroscopy can achieve objective monitoring of the practical fermentation profile, which can better help winemakers make decisions to improve wine quality and consistency.
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ACS Applied Polymer Materials
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2024
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IF 4.4
Lina Zhang,Kai Feng,Yizhe Liu,Fangrong Wu,Yubo Liu,Bo Yu,Xiaowei Pei,Lijia Liu,Chunhong Zhang,Yang Wu,Feng Zhou
Antifogging coatings are urgently needed in daily life. However, current research efforts seldom focus on enhancing the mechanical wear resistance of coatings or investigating their antifogging properties under wet and dry conditions. Herein, a robust dual-cross-linked polymeric antifogging coating was developed through the UV curing of poly[(methacryloxyethyl)dimethylheptylammonium bromide–acrylic acid] (pMDHAB–AA) and poly(ethylene glycol) diacrylate (PEGDA). Taking advantage of the dual-cross-linked structure and the delicate balance of hydrophilic–hydrophobic components in pMDHAB–AA, the coating presented durable antifogging performances, including long-time antifogging in hot vapor and numerous antifogging in an alternation of wetting and drying and robust mechanical wear resistance. In addition, based on the hygroscopic nature of the quaternary ammonium groups, the coating was endowed with oleophobicity underwater, an ultralow friction coefficient, and antibacterial and resistance-to-bacterial-adhesion performances. More importantly, the antifogging coating plays a crucial role in enhancing substrate transparency by reducing the diffuse reflection. This prepared material addresses current concerns related to antifogging coatings and holds significant potential for applications in various fields, including optical glass, medical devices, agricultural films, etc.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Fangqi Zhou,Hongjia Zhou,Qun Zhou,Ze-Xian Low,Yutang Kang,Shasha Feng,Zhaoxiang Zhong,Weihong Xing
Membranes with amphiphobic properties have shown significant advantages in the filtratimon of oily fumes, yet achieving stable, large-scale production of composite amphiphobic membranes still poses significant challenges. Herein, we present a scalable approach for the development of amphiphobic coatings for creating asymmetrically structured expanded polytetrafluoroethylene/polyphenylene sulfide (ePTFE/PPS) composite membranes. By adopting spray coating and UV curing, the amphiphobic coatings constructed on the ePTFE and PPS sides exhibited contact angles of 149° and 157° for corn oil and hexadecane, respectively. During a 100-h oil mist filtration test, the membrane maintained an oil interception rate above 99.7 %, and the filtration pressure drop decreased by 49 % compared with that of the original membrane. Our scalable manufacturing method creates an amphiphobic design that excels in liquid drainage, making it perfect for oil mist filtration with composite membranes, which is suitable for the industrial fabrication of amphiphobic gas purification membranes.
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ACS Applied Nano Materials
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2024
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IF 5.3
Ning Ding,Neng Hu,Junfeng Zhang,Huawei Xu,Liubang Meng,Xin Cai,Peter Müller-Buschbaum,Dongming Qi,Qi Zhong
Because of the detrimental effects of excessive exposure to solar ultraviolet radiation (UVR) on human skin health, wearable UVR detectors have attracted more and more attention. Inspired by the artwork “Tian-tsui hair pin with flora decoration” from the Palace Museum, a reversible and photochromic peony-shaped hairpin is designed to realize the visualized detection of solar UV radiation. It is prepared via electrospinning a mixed solution containing thermoplastic polyurethanes (TPUs) and Zn-MOF@WO3 onto microfiber nonwoven fabrics (MFNFs). Because of the enhanced UV responsive and photochromic capability from Zn-MOF@WO3 as well the excellent flexibility from TPUs and MFNFs, the obtained hairpin presents an excellent photoresponsive and wearable performance. When exposed to UV radiation from sunshine, the hairpin switches from white to light blue and finally to blue with radiation time. The colors light blue and blue can be used to indicate the UV radiation doses for the synthesis of vitamin D and the induction of erythema, respectively. With the assistance of oxygen in air, the hairpin recovers to its original state after being maintained in a dark atmosphere for 12 h. Even after six cycles of exposure to UV radiation and recovery in the dark, the photochromic performance almost remains unchanged. Only a minor reduction of 5% is observed. As a traditional wearable headdress in China, the peony-shaped hairpin prepared from the hybrid nanofibers not only presents oriental elegance but also is suitable for cyclical use in the daytime to monitor UV radiation for skin health management.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Weikang Shen,Haobo Wang,Zhouzhe Lan,Guangzhi Xu,Qinxue Ni,Qiufen Mo,Youzuo Zhang,Yan Wang
Gardenia fruit oil (GFO) is a new emerging edible woody oil with few investigations of its’ refinement process. In this study, different degumming, deacidification and bleaching technologies were introduced for realizing moderate refining of the GFO based on the preservation of bioactive micronutrients. Firstly, a simple multi-stage solid phase extraction (SPE) combined with a lab- affordable HPLC-UV instrument was developed for determinations of several vital biological constituents, such as crocetin, geniposide, polyphenols, phytosterols and squalene in the GFO. Satisfactory limit of detection (LOD), limit of quantification (LOQ), recovery, intra-day and inter-day precision were obtained. Subsequently, changes of those phytochemicals during three types of degumming, followed by three kinds of deacidification and then three ways of bleaching were investigated, offering insightful suggestions for achieving moderate refining of the GFO. Finally, the refined GFO might be suggested as a potential functional edible oil with valuable micronutrients. To our knowledge, this is the first study investigating moderate refinement techniques for GFO, as well as developing novel methods for phytonutrients analysis in the GFO.
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EUROPEAN POLYMER JOURNAL
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2024
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IF 5.8
Xiaoquan Li,Fuping Bian,Rui Huang,Jiyan Wei,Xuefeng Gui,Jiwen Hu,Shudong Lin
UV-curing technology is a new, green technology with the advantages of being efficient, energy-saving, and environmentally friendly; however, there is a general oxygen-inhibition problem during the UV-curing process, especially when silicone acrylates are applied to the UV-curing treatment. Herein, epoxy-based silicone prepolymers (ESP) containing Si-H bonds were prepared through the hydrosilylation reaction of poly(dimethylsiloxane-co-methylhydrosiloxane) (PDMS-PHMS) and allyl glycidyl ether (AGE) to graft epoxy groups onto silicone segments while retaining part of the Si-H bond. The epoxy groups in the prepolymers are capable of cationic photopolymerization, and the retained Si-H bonds in the prepolymers can generate highly reactive silyl radicals for initiating free-radical photopolymerization. The anti-oxygen inhibition ability of silicone acrylates was enhanced with the addition of ESPs. Through experimental investigation, it was found that ESP-3 grafted with 0.30% epoxy groups had the best effect on reducing oxygen inhibition, and the silicone acrylates were able to undergo UV curing in air without sticky surfaces when the added amounts of ESP-3 were at 20 wt%. The addition of ESP-3 has no major impact on the transparency and thermal performance of the UV-cured coatings and further enhances their hydrophobic properties. The free radical/cationic hybrid UV-cured silicone materials reduce the problem of oxygen inhibition, and the UV-cured silicone materials have great potential as hydrophobic and self-cleaning materials.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Haiqin Liu,Bowen Li,Sijie Gong,Haiyang Ding,Yimin Fan,Juan Yu
The construction of functional cellulose plastics possessing strong UV-blocking, hydrophilicity, and biodegradability is challenging. Therefore, we provide a novel strategy to successfully prepare sustainable and hydrophilic glucose-cross-linked cellulose (GC) plastics showing effective UV-blocking and excellent mechanical properties via hydroxyl-yne click reaction at room temperature. The results demonstrated that hydroxyl-yne click chemistry enabled efficient crosslinking of cellulose with glucose using 4-dimethylamino pyridine (DMAP) as a catalyst. Moreover, the DMAP residue imparted good UV-shielding properties to GC films exhibiting nearly 100 % UVC (200–275 nm) and 100 % UVB (320–275 nm) shielding ratios. The introduction of glucose imparted superior hydrophilicity (water contact angle of 40.3–43.2°) and improved water adsorption. Additionally, the mechanical properties of the GC films increased with the increasing crosslinking density, and the highest tensile stress was 94 MPa. The water-induced breaking and hydrogen bond reforming strategy led to a stress of 127 MPa and a strain of 25.6 % for the final GC2 film, which were excellent compared to those of the most reported cellulose films. Additionally, GC films were biosafe, exhibited improved oxygen barrier, and good biodegradability. Hence, this study provides a promising and efficient approach for preparing high-performance cellulose plastics.
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PubMed
高影响因子
Future Medicinal Chemistry
·
2017
·Vol. 9
·期 16
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IF 3.556
Kan Yang,Biao Gao,Xianjun Ming,Zhipeng Huang,Minghui Wang,Jibin Dong,Jinxin Wang
Aim: ASM, which hydrolyzes sphingomyelin into ceramide, is recognized as a therapeutic target for UV-induced skin damage. Direct inhibitors for this enzyme are rare. Here we synthesized several series of 1,3,6,7-tetrahydroxy-xanthone derivatives as novel ASM inhibitors. Results: Several compounds were more potent than the lead compound, among which 5b was found competitively inhibiting the enzyme and dose-dependently reducing ceramide generation. Furthermore, 5b and 5c showed excellent protective effect to skin keratinocytes against UV. Quantitative structure–activity relationship investigation revealed detail relationships between molecular structure and biological activity. Insight into the binding mode was precisely illuminated by molecule docking. Conclusion: This work would provide fresh ideas and strong supports for further development of ASM inhibitors and drug candidates for skin damage.
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PubMed
高影响因子
Frontiers in Materials
·
2022
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IF 3.985
Ma Guoru,Wang Xuan,Cai Wei,Ma Chao,Wang Xin,Zhu Yulu,Kan Yongchun,Xing Weiyi,Hu Yuan
Wood has been widely used since ancient times due to its biodegradability, good elasticity, impact resistance, and easy availability. However, the flammability of wood has vastly limited its applications and the fire hazard of wood has cost a great loss of life and property. Thus, it is important to improve the fire resistance of wood. Here, we used a phosphate acrylate monomer (PGMA) which was synthesized with phosphoric acid and glycidyl methacrylate by ring-opening reaction and melamine acrylic ester (MAAR) to make up a series of fireproof coatings with different proportions, and the fire resistance of wood has been investigated using the limiting oxygen index (LOI) test, back temperature test, and cone calorimeter test. When the wood was coated with the composite of 33.3% PGMA and 66.7% MAAR, the total heat release value decreased from 39.0 to 38.2 MJ/m2, and the total smoke release value decreased from 622 to 512 m2/m2, showing a remarkable improvement in fire resistance and smoke suppression. Thus, this easily prepared, cheap, and effective flame retardant coating can promote a wider application of wood.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2020
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IF 3.232
Tarun Kumar Patle,Kamlesh Shrivas,Ramsingh Kurrey,Seema Upadhyay,Rajendra Jangde,Ravishankar Chauhan
Here, we report an ultrasonic-assisted extraction (UAE) of phytochemicals from bark, leaves, sepals, fruits, and seeds of Dillenia pentagyna (Roxb) using different organic solvents such as chloroform, ethanol, and n-hexane. The preliminary phytochemical screening results showed that the ethanolic extract is enriched with phenolics, flavonoids , tannin , saponin , alkaloid, and terpenoids . The profiling of phytochemicals is carried out employing UV–Vis and Fourier-transform infrared (FTIR) spectroscopy analyses. The higher amount of phenolic compounds obtained in the ethanolic extract of bark and leaves as compared to other parts of the plant. Consequently, a higher amount of total flavonoid compounds unveiled in the bark of targeted species. The ethanolic extract of bark and leaves showed good free radical scavenging activity using DPPH with inhibition percentage of 90.58 ± 1.89% and 76.46 ± 1.58%, respectively, in comparison to standard ascorbic acid at 10 μg/mL. Moreover, the half-maximal inhibitory concentration (IC 50 ) value of bark and leaves are 5.64 and 6.54 μg/mL, respectively, in comparison to standard ascorbic acid . With the best of our knowledge, it is the first report pertaining to characterization and quantification of phenols and flavonoids as well as the investigation of the medicinal property in D. pentagyna .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2016
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IF 5.31
Junyun Huang,Xiaofang Li,Mengjie Ma,Dinglong Li
Di-(2-ethylhexyl) phthalate (DEHP) is an annexing agent that is widely used in the plastics industry. Due to the endocrine-disrupting effect of this compound, the development of an efficient method for degrading DEHP is important. In this study, DEHP was degraded by UV-activated peroxymonosulfate (PMS) oxidation. The influences of various parameters, including PMS dose, temperature, pH, metal ions, common anions and humic acid (HA), were examined. An increase in PMS dose and the presence of metal ions and common anions was observed to accelerate the reaction, while high pH and the presence of HA inhibited the reaction. In addition, seven transformation products were identified by liquid chromatography time-of-flight mass spectrometry (LC-TOF-MS), from which the reaction mechanism and degradation pathways were tentatively proposed. Direct oxidation, hydroxylation, cleavage of the ester bond and decarboxylation were observed in the degradation process. These findings may provide useful information for the treatment of this pollutant.
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危险品化学品经营许可证（带存储）