CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Jun Zhang,Shuai Wang,Xin Chen,Wei Zhao,Lianghu Su
Photo-assisted advanced oxidation processes (AOPs) are promising for removing emerging contaminants. A UV/periodate system (UV/PI) was evaluated for the degradation of two organophosphate esters, trimethyl phosphate (TMP) and tris(2-chloroethyl) phosphate (TCEP), and an aromatic phosphine oxide comparator, triphenylphosphine oxide (TPPO), under 254 and 365 nm irradiation. Under matched conditions, UV/PI markedly outperformed UV or periodate alone and followed pseudo-first-order kinetics. Multiple lines of evidence including radical quenching, iodide quenching and iodine speciation, high-resolution mass spectrometry, and quantum-chemical analysis, indicate that hydroxyl radicals (•OH) dominate TMP and TCEP removal, whereas iodine-centered radicals (RIS; IO 3 •/IO 4 • − ) drive TPPO transformation. The process remained effective across pH 6.0–8.5 and retained substantial activity in natural waters despite inhibition by natural organic matter and common anions. Pathway analysis revealed hydroxylation, iodination, dechlorination, and aromatic ring-opening routes. Screening-level computational toxicity estimates suggest comparable or reduced risk for most products, with transient increases for some iodinated intermediates. At 254 nm, the electrical energy per order (EEO) was approximately 270, 304, and 100 kWh·m −3 ·order −1 for TMP, TCEP, and TPPO, respectively; the lower TPPO EEO reflects selective radical attack. In matched cross-AOP tests, UV/PI gave the highest TPPO removal rate, whereas UV/persulfate was faster for the aliphatic OPEs; comparisons are substrate- and system-specific rather than universal. Overall, UV/PI emerges as a selective, non-catalytic, photo-assisted process that links structure to reactivity and energy demand. The 365 nm results demonstrate feasibility with UVA LEDs/sunlight.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mengmeng Wei,Leihua Jia,Dandan Fu,Zhenhua Shi,Masrina Mohd Nadzir,Junsheng Wang,Yipaerguli Yiminniyazi,Li Fan,Qiran Wang,Fude Liu,Bo Wang,Jinjun Yang
Poly(L-lactic acid) (PLA) is a biodegradable, biocompatible, and mechanically strong biomacromolecule with broad applicability across multiple areas. Nevertheless, its high flammability, tendency to melt-drip during burning, and inherently low crystallization rate limit its practical use. To address these issues, a halogen-free bio-based Schiff base flame retardant (VDPC) derived from vanillin and containing nitrogen and phosphorus was synthesized. With the incorporation of 10 % VDPC into the PLA, the composite achieved a limiting oxygen index (LOI) of 31.6 %, representing an increase of 56.4 %, and attained a V-0 rating in the UL-94 vertical burning test without dripping. Additionally, the peak heat release rate (pHRR), total heat release (THR), and carbon dioxide production (CO 2 P) reduced by 15.9 %, 36.8 %, and 29.7 %, respectively, confirming significantly enhanced fire safety. These improvements are attributed to synergistic flame-retardant mechanisms operating in both the condensed phase–through the formation of a relatively continuous and dense char layer–and the gas phase–via radical quenching by phosphorus–oxygen species. Furthermore, the composite showed accelerated crystallization rate, exceptional UV-blocking performance, and improved hydrophobicity. This study presents a sustainable and multifunctional flame-retardant system and demonstrates a viable approach to extending the utility of PLA-based materials in demanding applications.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shengwei Cheng,Jinhui Lin,Jundong Si,Jie Yin,Longgui Zhang,Xiangchen Fang,Yan Zhang
Branched poly(butylene succinate- co -terephthalate) (PBST)-based composites, a kind of bioplastic incorporated with lignin and other auxiliary agents with excellent mechanical properties, were obtained through melting processing in this work. Wherein, the epoxy group in multifunctional styrene-acrylic-epoxy-based random oligomer chain extender Joncryl ADR-4468 (ADR) could react in situ with hydroxyl in lignin and branched PBST. Additionally, Zn 2+ from zinc stearate (ZnSt) could form metal coordination bonds with the oxygen-containing functional groups of lignin and branched PBST. The in situ reaction and metal coordination bonds could improve the compatibility of the two. The tensile strength and the elongation at break could reach 18.6 MPa and 1224.7%, respectively, because of the increased compatibility. Moreover, the composites also exhibited hydrophobicity, excellent UV resistance, and visible light barrier properties. It is expected to have broad application prospects in the fields of agricultural mulch film and packaging.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Xiao Bai,Hui Zhang,Junpin Lin,Guang Zhang
Si-carbon composites have been considered as next generation lithium-ion battery anodes, with a view to sufficiently exerting the respective superiorities of high specific capacity of Si as well as excellent mechanical flexibility and electrical conductivity of carbon. However, direct blending of carbon with Si cannot obtain a synergy composite, resulting in inferior cycle properties during charge–discharge due to huge volume changes and deficient electron-conducting channels from the unavoidably aggregated Si. Herein, the composition of carbon fibers (CNFs) with Si nanoparticles (SiNPs) has been performed through UV-ozone surface modification followed by electrostatic self-assembly. It is found that solvent-free UV-ozone exposure of CNFs for 20 min successfully introduces carboxylic groups, as conventional acid treatment for 12 h. Besides UV-ozone surface modification provides an efficient and scalable route, the distribution and functionalization of CNFs can be also modified to effectively combine with amino-functionalized SiNPs. As a result, such Si-CNF composites containing 70.0 wt% SiNPs are able to exhibit excellent cycle performance with high coulombic efficiency of 74.8% at the 1st cycle and high specific discharge capacity of 1063 mAh g −1 at the 400th cycle.
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PROGRESS IN ORGANIC COATINGS
·
2017
·
IF 2.858
Hongping Xiang,Xiaowei Wang,Lu Xi,Haihui Dong,Peng Hong,Jiahui Su,Yanyan Cui,Xiaoxuan Liu
A series of UV-curable flexible hyperbranched polyurethane acrylate (F-HBPUA) with various generation numbers and soft chains are successfully developed by modifying different generations of hydroxyl terminated hyperbranched polyurethane (HBPU-OH) with diverse soft chains contained semiadduct urethane monoacrylate. The influence of generation number and soft chain on the performances of F-HBPUA and its UV-cured freestanding film is studied. The degree of branching of F-HBPUA from the second to the fifth generation is proved to be 0.74, 0.79, 0.82 and 0.94, respectively. The glass transition temperature of F-HBPUA increases with increasing generation number but it decreases with the increase of soft chain length. The thermal stability of F-HBPUA improveswith higher generations while the longer soft chain is only beneficial to the heat resistance at below 300 °C. As the increase of generation number and chain length, the UV-curing time of F-HBPUA film is significantly shortened from 12 s to 3 s, the flexibility of the UV-cured film is greatly increased from 4 mm to 1 mm, adhesion is improved to 3 grades. This novel flexible hyperbranched polyurethane acrylates can be applied to coatings, membranes and 3D print parts with excellent flexibility.
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高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Yichang Wang,Sixiang Wang,JungHyeon Yoo,DaeHo Yoon,Tianrong Li,Yuhua Wang
In situ fabrication of lead halide perovskite quantum dots (PQDs) is important for narrow-band emitters for LED displays due to the simple work procedure and convenient usability; however, the growth of PQDs is not readily controllable in the preparation, resulting in low quantum efficiency and environmental instability of PQDs. Here, we demonstrate an effective strategy to controllably prepare CsPbBr3 PQDs in polystyrene (PS) under the regulation of methylammonium bromide (MABr) via electrostatic spinning and thermal annealing techniques. MA+ slowed down the growth of CsPbBr3 PQDs and acted as a surface defect passivation reagent, which was proved by Gibbs free energy simulation, static fluorescence spectra, transmission electron microscopy, and time-resolved photoluminescence (PL) decay spectra. Among a series of prepared Cs1–xMAxPbBr3@PS (0 ≤ x ≤ 0.2) nanofibers, Cs0.88MA0.12PbBr3@PS shows the regular particle morphology of CsPbBr3 PQDs and the highest photoluminescence quantum yield of up to 39.54%. The PL intensity of Cs0.88MA0.12PbBr3@PS is 90% of the initial intensity after immersing in water for 45 days and 49% of the initial value after persistent ultraviolet (UV) irradiation for 27 days. A high color gamut containing 127% of the National Television Systems Committee standard with long-time working stability was also obtained on light-emitting diode package measurements. These results demonstrate that MA+ can effectively control the morphology, humidity, and optical stability of CsPbBr3 PQDs in the PS matrix.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.5
Xiaojun Fu,Ke Wang,Jingxin Chen,Yonghong Ge,Danshi Zhu,Jianrong Li,Bin Liu,Hongbo Mi
With the escalating environmental concerns associated with non-biodegradable, petroleum-derived materials, the development of eco-friendly coating alternatives has become imperative to replace conventional commercial fruit waxes, such as morpholine-emulsified formulations. This study presented the development and characterization of a composite film composed of titanium dioxide (TiO₂), rice bran wax (RW), and chitosan (CHI), and evaluated the potential of its emulsion as a postharvest coating for fruit preservation. The TiO₂/RW/CHI film exhibited enhanced mechanical and thermal performance, including improved tensile strength and thermal stability, particularly at 0.07% TiO₂. In addition, the film with 0.09% TiO₂ demonstrated favorable water solubility, as evidenced by a contact angle of 38.4°, indicating ease of cleaning from fruit surfaces. Notably, the TiO₂/RW/CHI coating can effectively promote the oxidative degradation of ethylene under ultraviolet irradiation, thereby reducing weight loss, maintaining lower soluble solids content, and delaying textural softening of cherry tomatoes during storage. These results suggest that the TiO₂/RW/CHI emulsion coating is a promising eco-friendly alternative for extending the shelf life and maintaining the quality of postharvest fruits.
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Wasim Ullah Khan,Zhiqi Ye,Mebrouka Boubeche,Tong Liu,Zhenbin Guo,Yueli Zhang
In the progress of LED phosphors, the chemical stability, thermal stability, and color purity was not usually given due attention. However, the most critical problems of WLEDs are the deficit in the red-spectral region, stability, low color-rendering index (CRI) and high correlated color temperature (CCT) limit its efficiency for vivid application. Herein, the Ca 3 YGa 3 B 4 O 15 : x Sm 3+ (CYGB: x Sm 3+ ) were prepared by a solid-state route. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), diffuse reflection spectroscopy (DRS), and as well as photoluminescence (PL) spectra are used to exemplify the resulting samples. The structure and the Sm 3+ dopants in the cation-borate phosphors were quantified, signifying the importance at Ca and Y sites. Under ultraviolet radiation-induced bright deep-red emissions with high color-purity up to 97.5%. The energy-migration (EM) between the Sm 3+ ion was investigated both empirically and theoretically in the region of Sm 3+ contents. Several theoretical-models were employed to simulate the lifetime of Sm 3+ at various-concentrations, and the processes were investigated as a forced-electric dipole. The chemical-stability of CY 0.95 GB:0.05Sm 3+ has also been investigated in this work. Interestingly, the CY 0.95 GB:0.05Sm 3+ showed exceptional thermal-quenching resistance of>91.2% intensity at 400 K. The WLED containing CY 0.95 GB:0.05Sm 3+ blended with the BAM:Eu 2+ and CYAB:Tb 3+ phosphor demonstrated low CCT ≈ 3843 K and high CRI ≈ 91.9. These findings were healthier than the industrial WLED having Y 3 Al 5 O 12 :Ce 3 + and blue-LED.
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高影响因子
EUROPEAN POLYMER JOURNAL
·
2021
·
IF 4.598
Yue Li,Zhencai Qu,Kun Wu,Peng Lv,Huifa Meng,Haoting Zheng,Jun Shi,Mangeng Lu,Xiaomei Huang
In this work, a bio-derived char-forming strategy for surface fireproofing was developed. Specifically, a vinyl-modified tannic acid, (VTA) was synthesized by a ring-opening reaction between tannic acid and glycidyl methacrylate. Integration of epoxy acrylate resin, VTA and tri-(glycidyl methacrylate) phosphate (TGMA), a novel UV-curing coating was prepared, which rendered the PET sheets with superior fireproofing effect. PET samples that were surface coated with the designed UV-curing agent displayed a UL-94 V-0 rating. The peak heat release rate (peak HRR) for combustion of PET was reduced by 10.66% upon application of the flame-retardant coating in cone calorimetry tests. However, the total smoke release (TSR) increased by 48.28% due to pyrolysis of tannic acid produces 1,2,3-benzenetriol and carbon dioxide, plus the triol underwent partial combustion with the formation of large amount of particulates. The thermal behavior of cured coating revealed that the presence of high carbon content aromatic tannic acid promoting cationic crosslink and char formation ability. When 40% VTA was added into a coating, the pyrolysis char yield increased by 36.88%. Furthermore, the capability of inhibit heat transfer with the presence of VTA significantly decreased the maximum rate of weight loss for the coating by 85.97%. The increase in the VTA content promoted crosslinking density of the coating, which leads to good rigidity, outstanding abrasion resistance and remarkable water fastness.
研究领域:
高分子材料
·
阻燃化学
·
表面工程
·
绿色化学
·
材料科学
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 39
·
IF 1.866
Yang Yang,Huali Luo,Jinlong Yang,Daofen Huang,Shuxue Zhou
Construction of a highly hydrophilic polymer surface with excellent long-term stability underwater is a great challenge. In this paper, a facile ultraviolet (UV) curing technique was employed to realize the three-dimensional (3D) grafting of poly(ethylene glycol) diacrylate (PEGDA, molecular weight: 400, 600, and 1000 g/mol) on a bisphenol A epoxy acrylate (BEA) sheet. The cross section morphology, surface chemical composition, and wettability of the sheets were monitored using an optical microscope, an attenuated total reflectance Fourier transform infrared spectroscope, and a water contact angle analyzer, respectively. The PEGDA-grafted epoxy sheets displayed a highly hydrophilic surface and meanwhile possessed excellent stability underwater, despite the molecular weight of PEGDA. In contrast, the PEGDA/BEA blend sheets are easily damaged underwater, due to strong swelling. In addition, the PEGDA1000-grafted BEA sheet demonstrated good antifouling performance in a natural marine environment. Nevertheless, its long-term antifouling is not satisfactory, being presumably due to hydrolysis or biodegradation of the PEG segments. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43972.
研究领域:
高分子科学
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材料工程
·
表面改性
·
海洋防污涂层
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Jiang Chang,Weimin Guo,Lixin Sun,Qiang Wang,Jingyuan Zhang,Xiaoyu Zhao,Xiangrui Meng,Kuo Zhang,Qiu Fu,Lijian Sun
A simple and scalable method is used to prepare multifunctional bio-based films. • Natural gardenia yellow was first used as a UV and blue light absorber. • The films exhibit high transparency and excellent protection against harmful light. • Integrated fire safety and antibacterial properties were achieved. • The films exhibit excellent mechanical strength and biodegradability. The integration of multiple functionalities into a single material system, while simultaneously ensuring sustainable processing and high transparency, remains a critical challenge in materials design. Herein, a multifunctional cellulose film is developed through a supramolecular engineering strategy that orchestrates the synergistic interplay of carboxymethylated cellulose, gardenia yellow (GY), and phosphorylated chitosan (PCS). The process involves alkali/urea assisted regeneration of cellulose into hydrogel matrix, followed by incorporation of a pre-assembled GY-PCS complex. The resulting films exhibit exceptional optical management capabilities, achieving light shielding efficiencies of 52.5–69.9% for UV-A, 55.6–68.3% for UV-B, and 72.5–91.1% for high-energy blue light (HEBL). The films demonstrate superior blue light filtering performance compared to commercial counterparts. Encouragingly, the films exhibit high transmittance of 90–90.8% and low haze of 1.8–2.0% at 600 nm. In practical applications, the films effectively block blue light radiated by illumination system, computer screen and smartphone screen. Notably, the incorporation of PCS imparts ideal flame-retardant properties, increasing the limiting oxygen index (LOI) from 19.2% to 32.1%. Moreover, the films exhibit excellent antimicrobial activity. Benefiting from the synergistic hydrogen-bonding network, the tensile strength of the films achieves a substantial increase ranging from 11.1% to 18.7%. This simple strategy would direct cellulose films toward diversified applications.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 27
·14368-14379
·
IF 3.9
Fan Zhiqiang,Chen Zhaohui,Li Li
To enhance the application potential
and added value of an independently
developed self-lubricating poly(vinyl alcohol) (PVA) interventional
microcatheter, a novel strategy for in situ formation of acrylamide/sodium
alginate (AM/SA) hydrogel coating on the surface of the PVA microcatheter
via UV light initiation was proposed. And the comprehensive effects
of key parameters including composition, light intensity, irradiation
time, and photoinitiator concentration on drug loading, release profile,
adhesion, and lubricity of the coating were systematically studied.
By adjusting the UV light intensity (20–50%), exposure time
(3–20 min), and initiator concentration (0.125–1%),
the thickness of the hydrogel coating could be controlled in the range
of 13.4 to 791 μm, significantly improving the drug loading
and release capacity of the microcatheter, from 283.45 μg/g
of pure PVA to 2070.11 μg/g, and the cumulative release within
24 h could reach 80.13%. The hydrogel coating also exhibited excellent
interface stability, achieving high adhesion energy of 201 J/m 2 at the photoinitiator concentration of 0.5%. With moderate
SA content, e.g., 5%, the surface friction coefficient of the catheter
was significantly reduced to 0.04, representing a reduction of ∼21%
compared to pure PAM coating and also better than that of pure PVA
(0.0596). This AM/SA hydrogel coating integrated the triple functionality
of drug loading, controlled drug release, and surface lubrication,
markedly enhanced the multifunctional integration and application
value of PVA catheter, and would provide a new strategy for developing
high-performance interventional medical devices used in the field
of short-term nonvascular luminal interventional procedures.
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高影响因子
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