SURFACE & COATINGS TECHNOLOGY
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2025
·
IF 6.1
Mengmeng Zhang,Zhihui Sui,Lijian Sun,Qi Zhang,Yikun Xu,Lihua Deng,Fang Hu
Functional thermoregulation fabrics have emerged as a significant area of research and development within the textile industry, garnering extensive attention in recent years. Herein, dodecyl alcohol/paraffin wax-styrene-acrylate emulsions (DD/PW-TiO₂/FSiWSA) were prepared using the core-shell emulsion polymerization method and used for the finishing of linen fabrics. To address the issues of low solid content, insufficient stability, and poor water resistance in water-based styrene-acrylic emulsions (WSA), nano-TiO₂ was first modified with 3-methacryloxy propyl trimethoxysilane (KH-570). Subsequently, KH-570 modified nano-TiO₂ and organic fluorosilicon were simultaneously introduced into the polymer skeleton. The structural characteristics of DD/PW-TiO₂/FSiWSA were studied. The results shows that the DD/PW-TiO₂/FSiWSA coating increases the water contact angle (WCA) of linen fabric from 0° to 131.95°, while also providing excellent stain resistance. The modified fabric has excellent anti-UV properties, and the UV protection factor is as high as 56.16. Moreover, the modified fabric exhibited excellent antibacterial activity against A. niger and S. aureus . Encouragingly, the modified fabric has excellent heat storage and temperature regulation capability, with a peak phase transition temperature of 23.6 °C, a latent heat of fusion of 25.36 J/g, and a 65.9 % increase in thermal conductivity. The coating is universal and can enhance the hydrophobicity of materials such as cotton fabrics, polyester cotton, paper, cardboard and wood, with a WCA range of 115.56° ~ 131.72°. Therefore, this multifunctional coating will lead cellulose materials towards diverse applications.
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高影响因子
Chemical Engineering Journal Advances
·
2025
·
IF 7.1
Tianhong Wang,Jiahui Xu,Anhong Cai,Jibo Xiao,Peng Wang,Min Zhao,Xianfeng Huang
Organic phosphonates detected frequently in water bodies pose severely environmental risks, and the cleavage of their C-P bonds to converse orthophosphate (PO 4 3- ) serves as a prerequisite step for achieving deep phosphorus elimination. Although the in situ generation of Cu(III) via Cu(II)/oxidant system for selective phosphonates degradation has been studied, the oxidation efficiency is constrained by sluggish Cu(II)/Cu(I) reduction, especially under acidic conditions. In this study, the introduction of UV irradiation accelerated the Cu(I)/Cu(II)/Cu(III) cycle in Cu(II)/peroxymonosulfate (PMS) process, enabling efficient and selective oxidation of 1,1-diphosphonic acid (HEDP, a typical phosphonate) into PO 4 3- across a wide pH range. UV-driven trace Cu(II)/PMS system can convert 90% of HEDP into PO 4 3- within 10 min at the pH range of 4-10, which was significantly higher than the conversion efficiency of HEDP by UV/PMS, Cu(II)/PMS and UV/Cu(II)/H 2 O 2 processes. The decomposition of HEDP was enhanced with increasing Cu(II) and PMS concentrations. Notably, mechanistic investigation revealed that Cu(III)-induced intramolecular electron transfer was the key contributor during the UV/Cu(II)/PMS-driven decomposition of HEDP into PO 4 3- . The experimental results of competitive ligands clearly suggested that the high selectivity of HEDP oxidation by UV/Cu(II)/PMS was closely related to the complexation of Cu(II) with HEDP. Additionally, although natural organic matter and inorganic anions to some extent affected HEDP degradation, UV-driven trace Cu(II)/PMS system still exhibited satisfactory results in treating HEDP in actual wastewater. This study proposes a strategy for efficient phosphonate removal under varying pH conditions, which provides new insights for practical wastewater treatment applications.
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Journal of Physical Chemistry Letters
·
2025
·
IF 4.6
Ronghuan Liu,Zhaojin Wang,Zi-Wei Zheng,Xiaobing Tang,Renjun Guo,Xuanyu Zhang,Peter Müller-Buschbaum,Hai Zhou,Kai Wang,Xiao Wei Sun
Methylammonium lead chloride perovskite (MAPbCl3), with its wide bandgap of ∼3 eV, exhibits unique advantages for near-UV to UV optoelectronic devices. However, the fast crystallization kinetics and significant solubility differences of MAPbCl3 precursors in solvents cause discontinuous films with high surface defect densities, severely limiting device performance. This study introduces a solution mediated dissolution recrystallization strategy to address the aforementioned issues, namely, employing a CsAc/methanol solution to dynamically reconstruct preformed MAPbCl3 films. During this process, Cs+ doping regulates the crystallization kinetics and suppresses the formation of pinholes caused by nonequilibrium crystallization, and Ac– anions passivate grain boundaries and surface defects through coordination. This synergistic approach yields dense, high-quality Cs0.35MA0.65PbCl3 polycrystalline films. The resulting self-powered photodetector demonstrates exceptional performance under 405 nm laser excitation: an on/off ratio of 1.38 × 106, responsivity of 0.278 A/W, detectivity of 3.49 × 1012 Jones, and a response time of 16 μs. These metrics significantly surpass those of previously reported solution-processed counterparts. This work offers a new pathway for fabricating high-quality chloride-based perovskite films and facilitates their application in optoelectronic devices such as transparent solar cells and radiation detectors.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Xianrui Tong,Weijie Zhu,Zichen Qin,Yan Li,Pengyao Guo,Jiapeng Lu,Dongxiao Sun,Zhiqiang Dong,Lei Ding,Jiangya Ma
This study proposed a UV-initiated strategy for the synthesis of magnetic ion exchange resins. Two novel magnetic resins were successfully prepared by suspension polymerization method using 1-iodohexane as a long carbon chain alkylating agent under low-pressure ultraviolet (UV) initiation conditions. The polymerization reaction time of resin was significantly reduced to 2 h due to the UV initiation. MGD resin properties exhibited high synthetic stability and good reproducibility. The prepared resin particles possessed rich micropores and mesopores structure with a particle size of 50–250 um. The long carbon chain alkylating agent (1-iodohexane) could improve increasingly the adsorption capacity for phosphate (69.65 %) compared with the short carbon chain alkylating agent (dichloroethane). Site energy analysis found that the concentrated distribution of high-energy sites and surface homogeneity of resins contributed to their high adsorption capacity. DFT calculations, characterizations of resins before and after adsorption, and stoichiometric experiments revealed the electrostatic attraction and ion exchange dominated the removal mechanisms of phosphate adsorbed on prepared resins. DFT results indicated longer chain lengths enhanced both the non-electrostatic and electrostatic components of the adsorption energies. Therefore, compared to thermal initiation, low-pressure UV initiation offered advantages such as high efficiency, rapidity, low-carbon and environmental friendliness for the preparation strategy of a new generation of high-performance magnetic resin.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 47
·e56268
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IF 2.7
Zhenjie Yuan,Siqi Huang,Wenduo Chen,Dazhi Jiang
By combination of UV curing and frontal polymerization, interpenetrating polymer networks (IPNs) based on diglycidyl ether of bisphenol-A (DGEBA) epoxy resin and polydicyclopentadiene (PDCPD) were prepared by UV-induced simultaneously frontal polymerization in this paper. Compared with the net DGEBA cured polymer, the tensile strength, elongation at break and impact strength of the IPNs were simultaneously improved. The maximum tensile strength and elongation at break of the IPNs reached 100 MPa and 4.64%, respectively, and the maximum impact strength reached 7.34KJ/m 2 with an improvement of 115.2% over that of the net DGEBA cured polymer. Thermogravimetric analysis (TGA) results revealed that the IPNs could enhance the thermal stability. Data of the differential scanning calorimetry (DSC) and TGA testing shows that the IPN shows a single glass transition temperature ( T g ) which is between the T g of DGEBA and DCPD, indicating homogeneous phase and highly cross-linked IPN formed. Morphologies and molecular structure of the IPNs polymer were observed by scanning electron microscope (SEM) and characterized by Fourier transform infrared spectroscopy (FTIR), respectively, whose results also proved the formation of ideal IPNs structures.
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ACS Applied Polymer Materials
·
2024
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IF 4.4
Hua-Xin Huang,Xin-Yi Ouyang,Jia-Le Zhang,Chen-Chen Lu,Peng Li,Wei Wu,Robert K Y Li,Xiao-Ming Ren,Hui Zhao
Ultraviolet (UV) shielding materials have garnered widespread applications in biological protection, aerospace, intelligent coating, and other fields. However, they are vulnerable to external friction scratches due to prolonged exposure, which leads to a decline in their UV shielding ability, further limiting their long-term applications. In this work, a series of waterborne polyurethane–polydopamine nanocomposites with excellent self-healing and UV shielding properties were prepared, among which using waterborne polyurethane with Diels–Alder thermally reversible cross-linked networks as the substrate and polydopamine (PDA) nanoparticles as the UV shielding agent. The developed nanocomposites can achieve a good self-healing effect at 120 °C in 30 min, and the self-healing efficiency can reach more than 68%. Adding PDA nanoparticles can enhance the mechanical and UV shielding properties of the nanocomposite. The nanocomposite with 0.5 wt % PDA contents has both the highest tensile strength and elongation at break, with values of 9.9 MPa and 667.27%, respectively. UV–vis tests exhibit that the residual amount of methylene blue solution under the protection of the nanocomposite film containing 2 wt % PDA content could reach 63.81%, concluding that the as-prepared nanomaterials have excellent UV shielding properties. This study offers an idea for the production of excellent and durable UV shielding materials with self-healing properties.
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Journal of Water Process Engineering
·
2024
·
IF 6.3
Yu-qiong Gao,Xiang-mei Zhong,Xue-ting Ren,Fu-xiang Tian,Nai-yun Gao,Cong Li
This study systematically investigated the degradation of metronidazole (MNZ) using a medium-pressure UV (MPUV)/chlorine/TiO 2 process. Under the optimal concentrations of 150 μM chlorine and 100 mg/L TiO 2 , the MNZ degradation efficiency reached 90.7 % within 6 min with a pseudo-first-order rate constant of 0.3661 min −1 , along with a synergistic factor of 1.99. The contribution rate of •OH ranges from 54.6 % to 60.0 % under various chlorine concentrations, indicating its primary role in the degradation of MNZ. Additionally, h vb + and O 2 ●– also contributed due to their promoting effect on •OH formation. Typically, acidic conditions favored MNZ degradation, with Cl − having a minor effect, NO 3 − showing a slight promotional effect, and HCO 3 − and HA inhibiting MNZ degradation. The potential degradation pathways of MNZ were proposed based on LC/TOF/MS analysis. Compared to MPUV/chlorine, MPUV/chlorine/TiO 2 was superior in controlling the formation of disinfection by-products. Acute toxic changes in Escherichia coli , in conjunction with Toxicity Estimation Software Tool, revealed that the bioconcentration factor, mutagenicity and acute toxicity of most intermediate products were lower than that of MNZ, although some intermediates showed an elevated risk for developmental toxicity. These findings indicated that the MPUV/chlorine/TiO 2 process is an efficient and safe treatment method for MNZ-contaminated water remediation.
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2024
·
IF 5.4
Yanhao Liu,Shubin Li,Jiang Zhu,Lili Fan,Lu Wang
The use of hydrogels to mimic natural cartilage implantation can effectively solve the current problems of insufficient cartilage donors and low rate of injury healing. In particular, injectable hydrogels are less invasive in clinical applications and better able to fill uneven injury surfaces. Here, we prepared NorCS and CS-SH by modifying chitosan with 5-norbornene-2-carboxylic acid and N-Acetyl-L-cysteine, respectively. Dual-network hydrogels were prepared by using UV-triggered thiol-ene click reaction between NorCS and CS-SH and the metal coordination between SA and Ca 2+ . The prepared hydrogels can be cross-linked quickly and exhibit excellent degradability, self-healing and injectable properties. At the same time, the hydrogel also showed good cytocompatibility and could significantly restore the motor function of mice. This study provides an effective strategy for preparing injectable hydrogels capable of rapid cross-linking.
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PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xindan Yi,Runying Gao,Xiaohui Liu,Yongming Chen,Birong Zeng,Yiting Xu,Conghui Yuan,Lizong Dai
A kind of phosphorus-doped carbon dots with flame retardancy was made from biphenylamine and guanidine phosphate by a simple hydrothermal method. The surface chemical structure, morphology, and optical property of the as-synthesized MPD-GP-CQDs were characterized by Fourier transform infrared spectrometry, Field emission transmission electron microscopy, and fluorescence spectroscopy, respectively. And then the MPD-GP-CQDs were added to poly(vinyl alcohol) (PVA) to prepare functional PVA composite film. The effect of MPD-GP-CQDs with different additions on the thermal, optical, and mechanical properties as well as flame retardancy of PVA composite film were explored by thermogravimetric analysis, differential scanning calorimetry, UV–vis spectroscopy, universal tensile test, vertical combustion test (UL-94), limiting oxygen index (LOI), microcalorimeter, etc. It showed that the addition of MPD-GP-CQDs not only endowed PVA film with flame retardancy but also improved its UV shielding and mechanical properties. The phosphorus content played a key role in the modification. As the added MPD-GP-CQDs increased, the flame retardant performance gradually increased. When 12.5% MPD-GP-CQDs was added, the UL-94 vertical combustion test rating of the MPD-GP-CQDs-PVA composite film reached VTM-0, and the LOI value was 30.8%. In addition, the transmittance of the MPD-GP-CQDs-PVA composite film in the UV-A band decreased to 35.3%, showing good UV shielding effect. These results suggested that the phosphorus-doped composite carbon dots had potential application in the development of some polymer materials such as multifunctional PVA films.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qianzhen Zhang,Ran An,Abudukadi Tudi,Jiongquan Chen,Xiaoqin Ma,Xifa Long,Zhihua Yang,Shilie Pan,Yun Yang
Developing new short-wavelength nonlinear optical (NLO) crystals has always been a significant and challenging area of research. Herein, guided by the cooperative optimization strategy, three new rare-earth metal borate fluorides, K 2 GdB 3 O 6 F 2 , Rb 2 LuB 3 O 6 F 2 , and Cs 2 LuB 3 O 6 F 2 , are rationally designed and fabricated by synergically assembling advantageous functional groups. Among them, a structural evolution from centrosymmetric K 2 GdB 3 O 6 F 2 to non-centrosymmetric Rb 2 LuB 3 O 6 F 2 and Cs 2 LuB 3 O 6 F 2 reveals that the [B 3 O 6 ] group contributes to the control of structural symmetry, owing to its sensitivity to the coordination of rare earth metal polyhedra. Notably, all the three title compounds exhibit short cutoff edges less than 200 nm, with Cs 2 LuB 3 O 6 F 2 displaying a large experimental frequency doubling effect of 1.5 × KH 2 PO 4 . The type-I shortest phase-matching wavelengths for Rb 2 LuB 3 O 6 F 2 and Cs 2 LuB 3 O 6 F 2 are evaluated to be 210 and 202 nm, respectively, indicating their potential for direct output of 213 coherent lights through a fifth harmonic generation process of Nd: YAG laser. This study provides new insights into the rational design and development of short-wavelength NLO materials by exploring the sensitivity of the [B 3 O 6 ] groups to the surrounding coordination environment, thereby fostering innovation in the field of NLO materials.
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CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yuanyuan Zhang,Leiyun Li,Zihan Pan,Yunjie Zhu,Yanan Shao,Yinghui Wang,Kefu Yu
Sulfate radical (SO 4 − ) based advanced oxidation processes are effective for the removal of antibiotics including sulfonamides from freshwater. However, few studies were focused on the degradation of sulfonamides in marine aquaculture water and seawater, as well as the impact of transformation products on seafood such as fishes. In this work, sulfamethoxazole (SMX) was treated with UV/persulfate (UV/PS) system in different water samples. Chloride ions (Cl − ) had an inhibitory effect possibly due to the consumption and mutual quenching of reactive radicals. A slight promotion by bromide ions (Br − ) was observed and should be related not only to the transformation of Br , but also to the properties of the SMX itself. Bicarbonate ions (HCO 3 – ) significantly inhibited degradation as it is a scavenger of SO 4 − and HO in UV/PS. Sulfate ions (SO 4 2− ) showed a negligible impact on SMX degradation. The active sites of SMX were calculated to be the N1 and C7 atoms of the isoxazole ring, as well as the C9, C13 and N3 atoms of the benzene ring. Seven organic transformation products were identified by LC-MS/MS. Bromate (BrO 3 − ) and chloromethane as the potential human carcinogens were not detected from the reaction system of UV/PS with SMX in marine aquaculture water and seawater. Preliminary analysis of toxicity by the EPI Suite model, absorbable organic halogen (AOX) analysis and growth inhibition of Chlorella vulgaris proved that the UV/PS process could be used as a new disinfection method and it is relatively safer than traditional UV/NaClO disinfection.
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ACS Applied Polymer Materials
·
2022
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IF 4.855
Yanan Miao,Zuwu Tang,Qingwei Zhang,Aikebaier Reheman,He Xiao,Min Zhang,Kai Liu,Liulian Huang,Lihui Chen,Hui Wu
Hydrogels have drawn intensive attention as emerging materials for various applications in wearable sensors, soft robotics, and implantable devices. However, fabricating hydrogels with UV-shielding and antioxidant properties still remains a challenge. Herein, we prepared biocompatible 3-allyloxy-2-hydroxypropyl-lignin/polyacrylic acid (AHP-lignin/PAA) hydrogels with self-adhesion, conductivity, UV shielding, and antioxidant activity as wearable sensors by the incorporation of lignin into PAA. The structure, lap shear strength, and biocompatibility were characterized using the UV–vis spectrometer, universal testing machine, and cell test. The hydrogels showed strong adhesion to various substrates. The AHP-lignin/PAA hydrogels had excellent UV shielding and free radical scavenging capacity. Meanwhile, AHP-lignin/PAA hydrogels exhibited excellent sensitivity to tiny changes in low pressure. Notably, the hydrogels could adhere to the skin well without any other adhesives to monitor the movement signals of the body motion accurately. The biocompatible AHP-lignin/PAA hydrogels with self-adhesion, conductivity, UV shielding, and antioxidant activity offer great potential applications in wearable sensors.
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