Polymers
·
2019
·Vol. 11
·期 3
·458
·
IF 3.164
Wei Wang,Baikai Zhang,Shuai Jiang,Huiyu Bai,Shengwen Zhang
The major challenge in preparing polymer nanocomposites is to prevent the agglomeration of inorganic nanoparticles (NPs). Here, with regenerated cellulose (RC) films as supporting medium, UV-shielding and transparent nanocomposite films with hydrophobicity were fabricated by in situ synthesis of CeO2NPs. Facilitated through the interaction between organic and inorganic components revealed by X-ray diffraction (XRD) and Fourier transformation infrared spectroscopy (FTIR) characterization, it was found that CeO2NPs were uniformly dispersed in and immobilized by a cellulose matrix. However some agglomeration of CeO2NPs occurred at higher precursor concentrations. These results suggest that the morphology and particle size of CeO2and the corresponding performance of the resulting films are affected by the porous RC films and the concentrations of Ce(NO3)3·6H2O solutions. The optimized nanocomposite film containing 2.95 wt% CeO2NPs had more than 75% light transmittance (550 nm), high UV shielding properties, and a certain hydrophobicity.
研究领域:
材料科学
·
纳米技术
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Lijia Zhao,Shupeng Sun,Su Zhang,Zhi Liu,Baoyu Huang,Nan Wang,Jianwei Zhang,Xiaogan Li
The hollow ZnO @ TiO 2 heterostructured nanospheres were synthesized by hydrothermal method using carbon nanospheres as sacrificed templates. With UV activation, the response of ZnO @ TiO 2 based chemiresistive-type sensors to 10 ppm formaldehyde is 11.02 at room temperature which is 5.48 times larger than that of the pure hollow ZnO. The response and recovery time significantly reduced to 14 s and 16 s. Selectivity, stability and repeatability of the hollow ZnO @ TiO 2 based sensor under UV-activation have also been examined. The sensing mechanism of the sensor to formaldehyde have been investigated by AC impedance spectroscopy , in-situ DRIFTS , and DFT theoretical calculation.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
Journal of Coatings Technology and Research
·
2018
·Vol. 16
·期 1
·179-188
·
IF 1.619
Yuan Yan,Chen Miao,Zhou Qiaohua,Liu Ren
Multiarm cardanol-based oligomers with a cyclotriphosphazene core were prepared through a nucleophilic substitution reaction; the structures of oligomers were fully characterized and confirmed through Fourier transfer infrared spectrometry, 1 H nuclear magnetic resonance (NMR), 31 P NMR, and gel permeation chromatography. The designed multiarm bio-based acrylates (AECC) were successfully prepared by epoxidizing the unsaturated aliphatic chain of cardanol segments with m -chloroperoxybenzoic acid and acrylating epoxy groups. The synthesized oligomers contain rigid phosphazene/benzene rings as “hard cores” and long aliphatic chains as “flexible shells.” Compared with commercial hyperbranched polyurethane acrylate (CN2302) and acrylated epoxidized soybean oil, cured AECC coatings and films exhibited not only greater hardness, excellent adhesion, higher glass transition temperatures, and excellent mechanical properties but also good thermal stability and biodegradability. We successfully obtained a high-performance UV-curing resin that has a high biorenewable material content and can meet basic daily requirements.
研究领域:
材料科学
·
化学工程
·
可再生资源利用
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Xie Yangxuan,Li Xinmei,Wu Liping,Zhang Peihao,Zhang Aixiang
To address the issues of poor wettability, low separation flux, and limited functionality in traditional separation membranes, this study developed an eco-friendly, multifunctional composite membrane based on polylactic acid (PLA/PVP-PDMS/Fe 2 O 4 /TiO 2 ) by combining electrospinning with electrostatic spraying technology. Through morphological and structural characterization, it was demonstrated that the composite membrane exhibits a multiscale rough structure, combining magnetic responsiveness with UV resistance. The results demonstrate that the composite membrane exhibits outstanding oil–water separation performance, achieving a separation flux of up to 4882.15 L·m −2 ·h −1 and a separation efficiency of 99.53%. With a water contact angle as high as 155.5° and a rolling angle as low as 4.5°, it displays superhydrophobic properties and excellent anti-fouling characteristics. In addition, this composite membrane demonstrates excellent potential for treating wastewater in corrosive environments, maintaining a hydrophobic angle above 150° across various corrosive conditions.
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Honggang Jiang,Jiahui Chen,Jiajun Zou,Yanyan Cui,Lina Song,Baohua Liu
Diols (PCD and IPCD) were synthesized by the reaction of propylene carbonate (PC) with ethylenediamine (EDA) or 2-methyl-1,5-pentanediamine (DAMP), respectively, and the diols were then reacted with isophorone diisocyanate (IPDI), and finally were terminated with hydroxyethyl acrylate (HEA) to obtain ultraviolet (UV)-curable oligomers (HPD and HDPD). The chemical structures of the oligomers were analyzed by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (1H NMR). The two oligomers were separately mixed with the diluent tetrahydrofuran acrylate (THFA) and the photoinitiator ethyl (2,4,6-trimethylbenzoyl) phenylphosphonate (TPO-L) to form homogeneous mixtures. The UV-curing reaction of the mixtures was carried out under UV light intensity of 120 mW/cm2, and the unsaturation conversion was monitored by real-time infrared spectroscopy (real-time FT-IR). The thermal stability of UV-cured product was analyzed, and the mechanical properties, surface properties, and three-dimensional (3D)-printed samples of the UV-cured HPD and HDPD were compared with those of UV-cured bisphenol A-type epoxy acrylate (EA). The results showed that UV-cured HPD and HDPD had excellent heat resistance. Compared to UV-cured EA, UV-cured HPD and HDPD exhibited higher tensile strength and flexibility and better transparency and surface properties.
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产品关联
DOI
高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
·
2020
·
IF 3.448
Chuankai Yang,Miaorong Zhang,Wei Wang,Yao Wang,Jianguo Tang
A colorimetric platform based on enzyme-inorganic hybrid nanoflowers was used for ultraviolet-visible detection of hydrogen peroxide (H 2 O 2 ). The hybrid nanoflowers were prepared via incubation at room temperature using horseradish peroxidase (HRP) and copper phosphate (Cu 3 (PO 4 ) 2 ) as the organic and inorganic components, respectively. HRP/Cu 3 (PO 4 ) 2 hybrid nanoflowers (HRP-HNFs) showed linear H 2 O 2 detection range from 100 nM to 100 μM, moreover, HRP-HNFs exhibited good selectivity for H 2 O 2 detection due to the specificity of HRP. In addition, HRP-HNFs have good reusability, excellent color stability and long-term storage stability, which indicate HRP-HNFs are promising for catalysis and biomedical applications.
研究领域:
生物化学
·
分析化学
·
纳米材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Jiangya Ma,Jun Shi,Houcheng Ding,Guocheng Zhu,Kun Fu,Xue Fu
This work presents a preparation process and flocculation performance evaluation of a novel cationic polyacrylamide PADC synthesized by low-pressure ultraviolet (UV) initiation. Flocculant of PADC was polymerized with acrylamide (AM), diallyl dimethyl ammonium chloride (DMDAAC) and coconut diethanolamide (CDEA) in homogeneous aqueous solution under the irradiation of low-pressure UV, and 2-hydroxy-4′-(2-hydroxyethoxy)-2-methylpropiophenone (Irgacure2959) was used as photo sensitizer. The factors that affect polymerization were investigated; these include monomer concentration, initiator dosage, mass ratio of m AM : m DMDAAC and irradiation time. Structures and morphologies were characterized by Fourier transform-infrared (FTIR) spectroscopy, nuclear magnetic resonance hydrogen (1H NMR) spectra, scanning electron microscope (SEM), and thermo gravimetric and differential thermal analysis (TG-DTA). The flocculation performance was evaluated by removing high turbidity kaolin suspension; flocculation mechanism was also correspondingly analyzed. Experimental results show that the PADC efficiently removes the suspended particles efficiently by charge neutralization and bridging effect in an environment with wide range of pH.
研究领域:
环境科学
·
高分子化学
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DOI
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 24
·245709
·
IF 3.953
Ping Rong,Yi Liu,Shiyong Gao,Huiqing Lu,Shuai Ren,Lin Li,Xinzhi Ma,Qicheng Zhou,Junpei Chen,Jinzhong Wang
A novel CaIn2S4 with three-dimensional octahedral nano-blocks (ONBs) are successfully synthesized on fluorine-doped tin oxide (FTO) substrate by a simple hydrothermal method. The CaIn2S4 ONBs are uniform grown and scattered on the whole FTO substrate with high regular and symmetric morphology as well as average diagonal length of about 600 nm. Based on the as-synthesized CaIn2S4 ONBs, a photodetector (PD) is fabricated. Satisfyingly, it is found that the CaIn2S4 ONBs PD achieves a broad-band response ranging from ultraviolet (UV) to visible ( vis) light at zero bias voltage. It is also significant that the CaIn2S4 ONBs PD enables a fast response, in which the rise time and decay time are less than 0.15 and 0.2 s, respectively. Furthermore, the morphological evolution of the CaIn2S4 ONBs and plausible UV/vis detection mechanism of the CaIn2S4 ONBs PD are discussed.
研究领域:
材料科学
·
光电材料
·
纳米技术
✓ 已验证
DOI
高影响因子
POLYMER
·
2026
·
IF 5.1
Yanan Sun,Zhuoming Duan,Kexin Huan,Minhua Li,Yanli Shi,Weili Gao,Haifeng Jia,Yuetao Liu
UV-curable silicone rubber exhibits promising prospects in fields such as flexible electronics and advanced coatings due to its high processing efficiency and patternability. This study developed a synergistic crosslinking strategy that combines Michael addition and UV curing to prepare high-performance dual network silicone rubber and achieve curing within seconds. The system comprised key components: trifluoropropyl-grafted acrylic silicone resin (PAT-SR), pentaerythritol tetraacrylate (PET4A), and aminopropyl silicone oil (ASO). Initially, the primary amine groups of ASO underwent a catalyst-free Michael addition with the acrylate groups in PAT-SR and PET4A, forming a malleable, partially cross-linked prepolymer. Subsequently, the material was cured within seconds via free radical polymerization of the residual acrylate groups upon UV irradiation. The trifluoropropyl group imparted outstanding hydrophobicity and chemical resistance to the material. PET4A, acting as a rigid cross-linking center, significantly enhanced the mechanical strength; the sample ASO 0.7 /PA 0.4 -FSR achieved a tensile strength of 0.92 MPa and an elongation at break of 612%. Furthermore, the material demonstrated good interfacial compatibility with various functional fillers. This research provides a simple and efficient novel strategy for preparing high-performance dual-network silicone rubber materials that combine excellent comprehensive properties with high processability, holding broad application potential in areas such as anti-fouling, protective coatings, and flexible electronics.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Yuwei Pan,Qi Wang,Minghua Zhou,Jingju Cai,Yusi Tian,Ying Zhang
In this study, UV irradiated photochemical reactions of oxalate (Ox) with premagnetized-Fe 0 (pre- Fe 0 ) as the catalyst was used to degrade sulfamethazine (SMT). Magnetic field promoted the release of iron ion from Fe 0 thus enhanced SMT and Ox removal in UV/pre- Fe 0 /Ox process. X-ray photoelectron spectroscopy demonstrated that the presence of UV and Ox promoted the transformation of Fe 3+ to Fe 2+ on Fe 0 , which enhanced the surface bound •OH (•OH surf ) generation. Ox inhibited the formation of iron (hydro)xides and enhanced the hydroxylation of Fe 0 surface. •OH surf was mainly responsible for SMT removal (44%), while UV direct photolysis and •OH in the solution both caused around 28% SMT removal. The process with Ox exhibited much higher efficiency in SMT degradation than that added with H 3 PO 4 , citric acid and ethylenediaminetetraacetic acid, which greatly expanded the chelate-modified Fenton processes and their treatment efficiency.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 20
·期 16
·2307786
·
IF 13.3
Jiefei Sui,Pengpeng Liu,Yifan Jia,Ruiling Guo,Lixia Bao,Jin Zhao,Lulu Dong,Yufei Wang,Weichao Lin,Yijing Liu,Jiliang Wang
To date, transforming environmental energy into electricity through a non-mechanical way is challenging. Herein, a series of photomechaelectric (PME) polyurethanes containing azobenzene-based photoisomer units and ionic liquid-based dipole units are synthesized, and corresponding PME nanogenerators (PME-NGs) to harvest electricity are fabricated. The dependence of the output performance of PME-NGs on the structure of the polyurethane is evaluated. The results show that the UV light energy can directly transduce into alternating-current (AC) electricity by PME-NGs via a non-mechanical way. The optimal open-circuit voltage and short-circuit current of PME-NGs under UV illumination reach 17.4 V and 696 µA, respectively. After rectification, the AC electricity can be further transformed into direct-current (DC) electricity and stored in a capacitor to serve as a power system to actuate typical microelectronics. The output performance of PME-NGs is closely related to the hard segment content of the PME polyurethane and the radius of counter anions in the dipole units. Kelvin probe force microscopy is used to confirm the existence of the PME effect and the detailed mechanism about the generation of AC electricity in PME-NGs is proposed, referring to the back and forth drift of induced electrons on the two electrodes in contact with the PME polyurethanes.
研究领域:
材料科学
·
能源技术
·
光电转换
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Wei Li,Xingxing Ni,Xinhai Zhang,Yang Lei,Jie Guo,Jie Jin,Bo You
Self-healing superhydrophobic coatings are attracting interest, but it still remains a great challenge to develop facile and fast self-healing strategies for superhydrophobic coatings. In this work, a novel environmentally friendly self-healing superhydrophobic coating based on an ultraviolet (UV)/near-infrared light (NIR) dual-responsive action was fabricated by blending UV-responsive microcapsules with NIR-responsive carbon nanoparticles (NPs), hydrophobic silica NPs, and waterborne silicone latex. The UV-responsive microcapsules were simply prepared through the electrostatic adsorption of negatively charged TiO2 NPs onto a positively charged microcapsule surface. The UV–NIR dual-responsive properties were mainly reflected in the healing of the superhydrophobic property for coatings through NIR or UV light irradiation. The self-healing process could be repeated many times, which can be attributed to the continued release of fluorine silane (FAS-13) loaded in the UV-responsive microcapsules to the coating surface. The combinations of NIR and UV responses endow the coating with the characteristics of fast healing and large-area healing when damaged by the external environment. In addition, the self-healing superhydrophobic coating film has excellent oil, corrosion, and wear resistance, satisfying the requirements for realistic outdoor applications.
研究领域:
材料科学
·
表面化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）