ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Zhichao Liu,Xulong Lv,Yanjie Liang,Qian Chen,Peng Zhang,Doudou Zhang,Xingliang Luo,Xuhui Xu
Deep ultraviolet (UV) mechanoluminescence (ML) materials hold broad application prospects in bright-field visualization detection, solid-blind imaging, and information storage due to their shorter emission wavelengths. However, current research on deep UV ML materials primarily focuses on trap control to suppress their reuse. Here, we enhance the deep UV ML of Gd 3+ ions by constructing a 4f-5d coupling between Pr 3+ ions and the 6 P 7/2 energy level of Gd 3+ ions in the wide-bandgap Lu 3 Al 2 Ga 3 O 12 with a garnet structure. The results suggest that the deep UV ML in Lu 3 Al 2 Ga 3 O 12 : Pr 3+ , Gd 3+ is trap-independent, and its self-recovery property originates from the continuous triboelectric charge transfer between polydimethylsiloxane and the ML particles. Sterilization experiments using deep UV ML against pathogenic E. coli highlight the potential of deep UV ML materials for continuous sterilization applications.
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Jiaqi Zhang,Ruixue Zhai,Jiawei Li,Chengyu Hong,Yiping Xu,Min Chen,Chao Zhou
Waterborne polyurethane coatings represented a viable substitute for conventional solvent-based coatings, primarily due to their eco-friendliness and straightforward application process. However, these coatings still encounter various issues such as corrosion, aging, and cracking during their actual application. In this research, a range of waterborne polyurethanes (MWPU) was developed by utilizing 4,4′-dicyclohexylmethane diisocyanate (HMDI) for the hard segment and polytetrahydrofuran ether diol (PTMG) as the soft segment, UV absorber benzimidazole (CR-455) as the functional monomer, and 2-mercaptobenzimidazole (MBI) as a corrosion inhibitor. A comprehensive investigation was conducted to evaluate the impact of varying MBI content on the characteristics of MWPU emulsions and films. The findings demonstrated that incorporating MBI led to enhancements in the comprehensive properties of MWPU films. Specifically, when the MBI content reached 1 wt%, MWPU exhibited optimal comprehensive performance, tensile strength reached 26.0 MPa, adhesion reached 2.02 MPa, water absorption measured at 3.2 %. It demonstrated excellent UV resistance and the anti-corrosion performance was additionally impressive, with the impedance modulus reaching 4120 Ω/cm 2 at a frequency of 10 −2 Hz. This can be mainly attributed to the unique benzimidazole structure in MBI and its ability to form chemical bonds with metal substrates. This innovative approach proposed in this study has the potential to expand applications for waterborne polyurethane in functional coatings.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Shiyu Fu,Shanxue Gao,Xinyi Zheng,Lei Chen
The pervasive challenge of plastic waste and its environmental impacts necessitates an understanding of microplastics' roles as vectors for contaminants. This study investigated the adsorption behavior of tetracycline, a widely used antibiotic, on conventional polyvinyl chloride (PVC) and biodegradable polylactic acid (PLA) microplastics, focusing on the effects of UV aging, particle size, and environmental factors such as pH, salinity, and humic acid concentration. Characterization techniques revealed that UV aging significantly altered the surface morphology and increased the adsorption capacity of both microplastic types, with aged PLA exhibiting superior tetracycline adsorption compared to PVC. Kinetic analyses suggested that the adsorption on PVC followed a pseudo-second-order model, while PLA was better represented by a pseudo-first-order model. Freundlich model provides a better fit for the adsorption behavior of tetracycline on both microplastics suggesting the multilayer adsorption mechanism. Acidic and neutral pH conditions enhanced tetracycline adsorption, whereas increased salinity reduced it, underlining the competitive interactions affecting adsorption dynamics. Additionally, low concentrations of humic acid were observed to promote the adsorption of tetracycline onto microplastics. These findings highlight the environmental risks posed by both traditional and biodegradable microplastics, particularly in relation to the transport of harmful contaminants in aquatic ecosystems.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Kui Wang,Wenhua Wang,Xudong Liu,Chang Yang,Yulin Liu,Xumin Li,Linghan Xiao,Guipeng Quan
s Ionogels, as a functional material with ionic conductivity, flexibility and environmental stability, are widely used in the field of flexible sensors. However, conventional ionogels often face problems such as insufficient adhesion and unstable sensing performance in wet or underwater scenarios. Hence, this study prepared a versatile ionogel sensor exhibiting environmental stability and strong adhesion, suitable for underwater sensing, via UV-initiated polymerization of tert-butyl acrylate (TBA), methoxyethyl acrylate (MEA), and 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA) monomers in 1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide ([BMIM][TFSI]) as the dispersion medium. Hydrophobic TBA and HFBA monomers effectively block water molecule penetration into the gel, granting excellent anti-swelling properties (mass retention > 90 % in various solvents). Fluorine-containing segments in the gel enhance thermal stability (only 2 % mass loss was observed after 21 days at 80 ℃) and impart underwater self-healing ability and high adhesion strength. The ionic liquid is uniformly distributed in the three-dimensional network structure of the gel, providing excellent electrochemical performance and endowing the gel with rapid response capability (response time of only 3 ms). This work provides a promising approach for the application of ionogel sensors in wearable devices in humid environments.
研究领域:
材料科学
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传感器与传感技术
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高分子化学
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柔性电子学
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环境稳定性
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Qiaorong Guo,Yuan Gui,Dongbin Wei,Feipeng Wang,Qiwen An,Yuguo Du
Both of chemical sunscreen 2,4-dihydroxyl benzophenone (BP-1) and physical UV-blocker titanium dioxide (TiO 2 ) nanocomposites are frequently found in aquatic environment, their environmental fates and potential risks should be concerned. The toxicity variation of the composite sunscreen BP-1-TiO 2 during UV-chlorine combined treatment was investigated in this study. It was found that the reaction mixtures exhibited dramatically increased acute toxicity after UV-chlorine treatment of BP-1-TiO 2 , implying the formation of toxic products. Totally, 21 transformation products were tentatively identified, including chlorinated/hydroxylated benzophenones (BPs), hydroxylated benzoyl benzoquinones, phenols, and benzoic acids. We proposed the plausible transformation pathways of BP-1, mainly including hydroxylation, oxidation, chlorination, decarboxylation and ring closing via electrophilic substitution, and Norrish I cleavage. Notably, cosmetic-grade TiO 2 (CG-TiO 2 ) nanocomposites promoted BP-1 transformation and toxic products formation during UV-chlorine combined treatment. The present results highlight that the coatings of CG-TiO 2 nanocomposites are not stable during UV-chlorine combined treatment, the naked TiO 2 would act as photocatalyst to promote BP-1 transformation and generate toxic products. These findings provide valuable insights for assessing potential environmental risks of sunscreen products.
研究领域:
环境科学
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毒理学
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水处理
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光化学
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纳米材料
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2016
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IF 5.393
Yurong Gu,Wenyi Dong,Cheng Luo,Tongzhou Liu
Hydrated electron (eaq–) induced reduction techniques are promising for decomposing recalcitrant organic pollutants. However, its vigorous reactivity with copresent scavenging species and the difficulty in minimizing the competitive reactions make the proportion of eaq– participating in pollutant decomposition low, reflecting by slow decomposition kinetics. In this study, a high photon flux UV/sulfite system was employed to promote eaq– production. Its feasibility in enhancing a notorious recalcitrant pollutant, PFOS, decomposition was investigated. The effective photon flux utilized for producing eaq– was 9.93 × 10–8 einstein/cm2·s. At initial solution pH 9.2, with DO about 5 mg/L, and at around 25 °C, 98% PFOS was decomposed within 30 min from its initial concentration of 32 μM. The kobs of PFOS decomposition was 0.118 min–1 (7.08 h–1), and about 8–400 folds faster than those obtained in other reductive approaches. In this system, PFOS decomposition showed can tolerate copresent 7 mg N/L of NO3–. Suggested by molecular orbitals and thermodynamic analyses, the mechanisms responsible for PFOS decomposition involve defluorination, desulfonation, and centermost C–C bond scission. By demonstrating a more practical relevant treatment process, the outcomes of this study would be helpful for facilitating future applications of eaq– induced reduction techniques for efficient recalcitrant pollutants decomposition.
研究领域:
环境科学
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化学
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DOI
PubMed
高影响因子
Silicon
·
2023
·Vol. 15
·期 13
·5691-5701
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IF 3.4
Wu Xinglong,Li Xiaolei,Zhong Jiaqi,Xu Xiaoli,Xu Baoyun,Ai Bo
Silicone resin is a coating material with good performance. The improvement of its thermal stability and hydrophobicity has always been the pursuit of researchers. In this paper, a series of novel UV-curable silicone resins containing perfluorocyclobutyl (PFCB) groups were prepared by co-hydrolytic polycondensation. The structures of the resin precursor MDT-SH were characterized by FT-IR and 1 H NMR. The heat resistance of them was studied by TGA and DSC, and results show that the PFCB groups can significantly improve the high temperature resistance of the resins. Contact angle tests showed that hydrophobicity of them was also enhanced by the PFCB groups.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
POLYMER BULLETIN
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2011
·Vol. 68
·期 4
·1009-1022
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IF 1.215
Han Wensong,Lin Baoping,Yang Hong,Zhang Xueqin
Using step by step polymerization process, the first- and second-generation hyperbranched polyesters were synthesized with N , N -diethylol-3-amine methylpropionate as branched monomer and pentaerythrite as a core molecule. The second-generation hyperbranched polyurethane acrylate oligomers containing carboxyl groups were obtained by further reacting with semiadduct urethane monoacrylate and maleic anhydride. The structures of the oligomers were investigated with elemental analysis, FT–IR, and NMR. UV–Vis spectra results showed that the oligomers had sharp absorption bands at about 207 nm. The glass transition temperatures were investigated by differential scanning calorimetry and showed in the range of −44.96 to −19.83 °C. Gel permeation chromatograph was used to observe the molecular weights and polydispersities of the oligomers. UV-curing properties were characterized by FT–IR with different curing time. In addition, the solubilities and viscosity of the oligomers were also examined.
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2018
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IF 2.955
Chengguo Liu,Cuina Wang,Yun Hu,Fei Zhang,Qianqian Shang,Wen Lei,Yonghong Zhou,Zhengchun Cai
A new polyfunctional acrylate monomer (COPERAA) was synthesized from castor oil and utilized as a sustainable reactive diluent for UV-curable materials. Firstly, experimental conditions for the synthesis of the monomer were optimized and its chemical structures were confirmed by FT-IR, 1 H NMR, and ESI–MS. Subsequently, the effect of COPERAA on biobased content, viscosity, and volumetric shrinkage of the obtained AESO resins were studied. After that the effect of COPERAA on thermal, mechanical, coating, and swelling properties of the resulting UV-cured bioresins were investigated. Furthermore, UV-curing behaviors of the resultant bioresins were evaluated by real-time IR. Compared with the petroleum-based trimethylolpropane triacrylate (TMPTA) diluent, the biobased COPERAA diluent showed better performance on the biobased content, volumetric shrinkage, adhesion, and final C C conversions of the resulting AESO materials and better compatibility with the AESO prepolymer. Therefore, the developed oil-based diluent shows promise to be applied in UV-curable materials.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 11
·3805-3811
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IF 6.4
Zaichun Sun,Yihao Wang,Bingchu Mei
Bismuth oxyhalides have attracted much attention in the field of optoelectronics because of their highly anisotropic crystal structure, tunable optical properties, and low toxicity. Few studies on the epitaxial growth of bismuth oxyhalides have been reported so far, however epitaxial thin films are suitable for investigating intrinsic properties and achieving device construction. In this study, we achieved the high quality epitaxial growth of BiOI thin film with thickness on the nanometer scale controllable via the deposition time. The bandgap of the BiOI exhibited a negative corelation with the film thickness owing to the quantum confinement effect. The as-fabricated photodetector based on the optimized thickness of the BiOI film exhibited high optoelectrical performance with a responsivity of 43.5 mA W−1 and normalized detectivity of 8.7 × 1010 Jones under the illumination of 405 nm laser. Furthermore, the photoresponse mechanism of the BiOI photodetector was tuned from a photoconduction to photogating effect depending on the thickness of the epitaxial thin film. The high crystallinity and continuous surface morphology contribute to the generation of the photogating effect of the BiOI film. This study enriches the investigation of bismuth oxyhalides and paves the way towards the design of efficient bismuth-based semiconductor optoelectronic devices.
研究领域:
材料科学
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光电材料
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半导体物理
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DOI
高影响因子
POLYMER BULLETIN
·
2021
·Vol. 79
·期 11
·9717-9740
·
IF 2.87
Wu Guangfeng,Song Xin,Yang Zhihui,Li Yingchun,Zhang Huixuan
Waterborne polyurethane (WPU) prepolymer with acrylate terminal was prepared by using hydroxyethyl acrylate as an end-capping agent. Modified gelatin (mGH) was prepared by grafting vinyl groups which were obtained from hydrolysis and condensation of vinyl trimethoxysilane onto the renewable natural polymer material cold-water fish skin gelatin. Due to the excellent biodegradability and mechanical properties of cold-water fish skin gelatin, mGH was introduced into the WPU backbone by covalent bonding to improve WPU comprehensive property. The vinyl groups in mGH and the acrylate ends in the WPU prepolymer were connected by UV curing to prepare biodegradable and renewable mGH/WPU chemical hybrid materials. The test results showed that the film-forming properties, the water resistance and thermal stability of WPU were improved by covalent bonding. Water contact angle increased from79.6° to 96.5°, and the maximum thermal degradation rate temperature increased from 340 to 400 °C. In addition, incorporation of mGH with high modulus improved the moduli and yield strength of WPU, in which the yield strength increased from 11.3 to 18.2 MPa. The degradation performance of mGH/WPU chemical hybrid materials was also evaluated that the degradation rate reached 68% in 0.6% lipase PBS solution and 56% in soil after 60 days. The study provides a novel polymerization method for preparing high biodegradable decorative coatings and prints of specialty metals, polymer plastics and certain types of woodware as well as medical scaffold materials. Graphical abstract
研究领域:
材料科学
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高分子化学
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环境科学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Yuejing Zeng,Jin Yang,Xiu Shen,Ruiyang Li,Zhiqiang Chen,Xiao Huang,Peng Zhang,Jinbao Zhao
A new lithiated-interpenetrating network gel-polymer electrolytes (LIPN-GPEs) is designed and fabricated by ultraviolet-irradiation radical polymerization . The LIPN-GPEs includes both cross-linked poly (lithiated 2-acrylamido-2-methylpropane sulfonic acid- co -polyethylene glycol acrylate) matrix C–P(AMPSLi-MPEGA) and polyacrylonitrile (C-PAN), which forms the interpenetrating framework. The interpenetrating network ensures the mechanical strength and flexibility that eliminates volume changes of lithium anode during lithium deposition/stripping process. Meanwhile, the LIPN-GPEs with better self-supporting nature and high ionic conductivity (2.5 × 10 −3 S/cm) can promote the movement of lithium ion resulting in more uniform distribution, which realizes uniform lithium deposition with stable SEI composition . Therefore, the LIPN-GPEs indicates excellent interfacial stability towards lithium anode. Symmetrical lithium metal cell yields low overpotential of 50 mV over 4000 h at 0.5 mA cm −2 . The LIPN-GPEs with optimized ratio exhibits wider electrochemical window (5.06 V vs. Li/Li + ) at ambient temperature, which also possesses unexceptional thermal stability with decomposition temperature up to 400 °C. Especially, when assembled with high-voltage cathode LiCoO 2 (LCO) and LiNi 0.5 Co 0 . 2 Mn 0 . 3 O 2 (NCM523) as coin cells, the LIPN-GPEs reveals cycling performance, reflecting good high-voltage resistance characteristic. This work testifies that LIPN-GPEs through a convenient ultraviolet-irradiation radical polymerization provides a candidate for lithium metal battery , which furnishes application prospects in wearable devices .
研究领域:
材料科学
·
电化学
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DOI
高影响因子
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