JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Sui Xingyu,Hu Zhengwen,Peng Lin,Shu Yong,Jiang Luming,Zhao Guixiang
With the rapid progress of urbanization and industrialization, water pollution has become an increasingly serious issue, particularly due to dye wastewater, which contains numerous harmful substances and is difficult to treat effectively. Dye wastewater contains many harmful substances and is difficult to treat effectively. Traditional treatment methods are often inefficient and economically unsustainable. In contrast, membrane separation technology offers high separation efficiency and environmental benefits, making it a promising approach for water purification. Therefore, in this paper, the hydrophilic modification of PVDF membranes was carried out by adding ZIF-8 and chitosan(CS), and at the same time, the membranes were endowed with the ability of light self-cleaning. ZIF-8, a metal–organic framework (MOF) material, was synthesized using water as the solvent through the reaction of zinc nitrate with 2-methylimidazole. The PVDF membranes were modified by physical co-mingling, and ZIF-8/CS/PVDF composite membranes with different contents of ZIF-8 and CS were prepared by the submerged precipitation phase transition method. The performance test results demonstrated that the composite membranes doped with ZIF-8 and CS exhibited significant improvements in water contact angle, pure water flux, and dye wastewater treatment performance. Notably, the modified membranes showed exceptional dye removal efficiency and enhanced resistance to membrane fouling. Furthermore, the results of photocatalytic self-cleaning experiments revealed that the modified membranes effectively degraded Congo red and methylene blue dyes under Xenon lamp irradiation, highlighting their excellent photocatalytic self-cleaning capability. These findings suggest that the ZIF-8/CS/PVDF-modified membrane holds great potential for water treatment and self-cleaning applications, achieving up to 93.06% dye rejection and a pure water flux of 95.89 L m −2 h −1 , more than double that of the pristine PVDF membrane.
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产品关联
DOI
高影响因子
China Foundry
·
2025
·Vol. 22
·期 5
·534-544
·
IF 2.3
Gu Yue,Duan Wen-yan,Wang Gong,Liu Bing-shan,Liu Xiao-dong,Li Shan
Ceramic cores fabricated by stereolithography exhibit great potential in casting turbine blades. Previous research on ceramic core molding was primarily conducted using vertical printing techniques, which not only resulted in lengthy molding durations but also compromised the mechanical strength. In this work, silica (SiO 2 ) ceramic cores, with fine complex geometric shapes, were fabricated using 65vol.% ceramic slurry by digital light processing (DLP) with different printing angles. Printing angles significantly impact the surface accuracy, shrinkage, printing efficiency of green bodies, as well as the microstructure and mechanical properties of sintered ceramic core samples. As the printing angle in the green body increases, the bonding area decreases, surface roughness on the XY plane worsens, shrinkage in the Z direction becomes more pronounced, and the printing efficiency declines. Similarly, an increase in the printing angle in the sintered body leads to a reduction in bending strength. At a printing angle of 30°, the printing time is reduced to half of that at 90°, which improves the molding efficiency. Meanwhile, the obtained bulk density of 1.71 g·cm −3 , open porosity of 24%, and flexural strength of 10.6±1 MPa can meet the requirements of sintered ceramic cores. Therefore, designing and optimizing the printing angles can achieve the balance between shrinkage, printing efficiency, and flexural strength.
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高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Yang Guangxin,Hao Subin,Zhang Zhou,Yuan Wang Zhang,Li Ming-De,Dang Li
Research on multifunctional luminescent materials is highly intriguing due to their wide-ranging applications in display technology, data security, and bioimaging. Nonetheless, achieving dual-mode delayed luminescence materials that simultaneously integrate thermally activated delayed fluorescence (TADF) and organic room-temperature phosphorescence (RTP) using pure organic small molecule remains a significant challenge. Herein, we report a host-guest system composed of polyaromatic hydrocarbons (PAHs) as guest emitters embedded within a benzophenone (BP) matrix, which successfully realizes efficient dual emission of TADF and RTP. The charge-transfer (CT) state functions as an “energy redistribution hub”, playing a critical role in promoting both reverse intersystem crossing (RISC) and internal conversion (IC), thereby enabling the coexistence of TADF and RTP. Ultrafast spectroscopic analysis confirms that the decay of anion and cation radicals occurs on a comparable timescale, supporting the CT-mediated mechanism. The developed material exhibits several characteristics, including an ultralong RTP lifetime, tunable emission from green to near-infrared, and high photoluminescence quantum efficiency. Notably, these properties are retained even in nanocrystalline form, demonstrating their strong potential for bioimaging applications. This study provides an effective strategy for designing purely organic dual-mode luminescent materials and opens up promising avenues for their future applications.
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DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
·
IF 15.7
Cui Xinyue,Xie Guanshui,Ran Guangliu,Liu Yuqiang,Ma Xueqing,Zhang Gendi,Kong Qiumin,Zhang Wenkai,Li Hongxiang,Cheng Pei,Ouyang Dan,Qiu Longbin,Bo Zhishan
Perovskite/organic tandem solar cells are a promising strategy to surpass the efficiency limits of single-junction devices, yet their performance is restricted by recombination losses in the organic subcells. Here, we investigate these losses by tracking film evolution from the very initial stage of organic film formation. We strategically manipulated donor and acceptor ratios to modulate film growth characteristics, while employing in situ techniques to monitor the real-time crystallization dynamics. Our research findings underscore that the variance in donor content within the organic blend exerts a fine-tuning effect on the solution-to-solid transformation process. When the donor content is inadequate, the acceptor molecules tend to aggregate, disrupting molecular packing and lowering crystallinity. These morphological changes hinder exciton dissociation, thereby leading to charge recombination and deteriorating overall device performance. Optimizing film morphology and crystallization reduces recombination losses, enabling perovskite/organic tandem solar cells with a record 26.42% power conversion efficiency.
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DOI
PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Tian Xiuzhi,Xiao Jiale,Bai Haozhe,Aissa Fatima Ait,Li Wei,Zhao Dou,Jiang Xue
A sustainable and scalable strategy for fabricating high-quality chito-oligosaccharide (COS)-functionalized boron nitride nanosheets (COS-g-BNNSs) was first developed via COS-assisted ball milling combined with ultrasonication. The method achieved an 85% yield of COS-g-BNNSs with an aspect ratio of ~ 400, layers of 10 ~ 15 and minimal structural defects. COS grafting (15 wt%) introduced hydrophilic -NH 2 and -OH groups, ensuring pH-independent aqueous stability (pH < 3 or > 4) through synergistic steric hindrance and electrostatic repulsion. The amphoteric nature of COS-g-BNNSs (pHzpc = 3.8) facilitated nanosheets’ homogeneous dispersion in carboxymethyl cellulose (CMC), forming vertically aligned thermal pathways via hydrogen bonding. The resulting CMC/COS-g-BNNSs nanocomposite films exhibited exceptional thermal and mechanical properties: a through-plane thermal conductivity of 2.44 W/(m·K) (60-fold higher than that of pure CMC), tensile strength of 16.5 MPa (302% improvement), and Young’s modulus of 41.1 MPa (856% enhancement), while retaining flexibility (48.3% elongation). Thermal management tests demonstrated a 20 °C reduction in the operating temperature of COS-g-BNNSs-incorporated circuits, alongside stable performance under cyclic bending. This eco-friendly approach utilized water-based purification and biodegradable components, positioning the COS-g-BNNSs/CMC nanocomposites as promising substrates for flexible electronics, balancing high thermal conductivity, mechanical robustness, and environmental sustainability.
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高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2021
·Vol. 146
·期 6
·2445-2462
·
IF 4.626
Usman Muhammad,Yu Haojie,Wang Li,Titinchi Salam,Khan Amin,Naveed Kaleem-ur-Rehman,Nazir Ahsan,Elshaarani Tarig,Fahad Shah,Amin Bilal ul
Ferrocene (Fc)-based polymers have promising application in burning rate catalysts (BRCs) for solid composite propellants, and some of them have already been practically used. However, they have some drawbacks such as high migration during a long-time storage. Copolymers of poly(2-(methacryloyloxy) ethyl ferrocene carboxylate- co -glycidyl methacrylic acid)s (P(FHEMA -co- GMA)s) were synthesized to overcome the migration problem of Fc-based BRCs as well as to boost the burning rate (BR) of ammonium perchlorate (AP)-based propellants. The structures of the obtained P(FHEMA -co- GMA)s were confirmed by proton nuclear magnetic resonance ( 1 H NMR) and Fourier transform infrared (FT-IR) spectroscopy. Cyclic voltammetry (CV) method was used to study their electrochemical behavior, and the P(FHEMA -co- GMA)s showed redox behavior for the existence of the Fc units. Because of the formation of integrated network structures, the P(FHEMA -co- GMA)s have good anti-migration performances. The BR catalytic property of P(FHEMA -co- GMA)s were investigated by thermogravimetry (TG) and differential thermogravimetry (DTG). They showed competent catalytic effects on the thermal decomposition of AP.
研究领域:
材料科学
·
电化学
·
推进剂技术
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DOI
高影响因子
Journal of Ocean University of China
·
2022
·Vol. 21
·期 5
·1237-1243
·
IF 1.179
Hou Jin,Ye Yongcheng
Copper oxide-loaded zeolite 4A nanocomposites (CuO-zeolite NCs) were successfully prepared by modifying zeolite 4A with CuSO 4 aqueous solution as the copper source. Zeolite 4A showed an important role in hosting copper oxide, and CuO-zeolite NCs exhibited a controlled release of copper ions. XRD patterns confirmed the appearance of new diffraction peaks of copper oxide at 35.83° and 38.83°. CuO nanosheets formed on the surface of zeolite 4A were about 30–40nm thick over a width of 200–300nm. CuO-zeolite NCs were primarily composed of Cu, Si, Al and O, as measured by XPS. Cu 2p 3/2 and Cu 2p 1/2 peaks were fitted into two main peaks centered at 934.7eV and 954.6eV, which were attributed to Cu (II). Zeolite 4A and CuO-zeolite NC displayed reversible Langmuir isotherm (type-I) characteristics and showed maximum adsorption quantities of almost 200 cm 3 g −1 at a relative pressure of 1.0 by CO 2 adsorption-desorption experiments. The antibacterial efficiencies of the CuO-zeolite NC were 99.4%, 96.7%, and 96.8% against Pseudoalteromonas tetraodonis ( P. tetraodonis ), Micrococcus luteus ( M. luteus ), and Shewanella putrefaciens ( S. putrefaciens ), respectively. These values showed that nano CuO-loaded zeolite 4A acted as a strong bactericide against marine bacteria. CuO-zeolite NCs can be further applied to marine antifouling coating.
研究领域:
材料科学
·
微生物学
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 16
·21188-21196
·
IF 2.478
Sun Ying,Liu Hongbo,Liu Fangchao,Liu Gang
Recently, it is shown that the thin films of BiFeO 3 –BaTiO 3 –SrTiO 3 have ultrahigh-energy storage density. However, the energy storage properties of BiFeO 3 –BaTiO 3 –SrTiO 3 ternary bulk ceramics have not been studied. In this work, the BiFeO 3 –BaTiO 3 –SrTiO 3 ceramics have been prepared by a conventional solid-state reaction method and the dielectric and electrical energy storage properties have been studied in detail. The ceramic with the composition of 0.25BiFeO 3 –0.30BaTiO 3 –0.45SrTiO 3 is experimental evidenced to be the best with the highest dielectric permittivity in the ternary system. To suppress the dielectric loss and leakage current, 0.25BiFeO 3 –0.30BaTiO 3 –0.45SrTiO 3 has been doped with Mn. Mn-doped ceramics have the same perovskite structure but the fine grains are formed and the number of pores decreases. Mn-doping reduces dielectric loss, enlarges the thermally stable zone of the dielectric, and improves the electrical energy storage density simultaneously. 2 mol% Mn-doped 0.25BiFeO 3 –0.30BaTiO 3 –0.45SrTiO 3 has the most optimized electrical energy storage properties. The energy storage density is 1.33 J/cm 3 and the efficiency is 88.5% at 185 kV/cm. The discharge energy density is 2.7 times that of undoped 0.25BiFeO 3 –0.30BaTiO 3 –0.45SrTiO 3 and 90% stored energy can release in 120 ns.
研究领域:
材料科学
·
电介质物理学
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高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2021
·Vol. 40
·期 1
·85-92
·
IF 3.603
Li Zhi-Yun,Song Yi-Hu,Zheng Qiang
Payne effect and its associated weak overshoot are of importance for understanding and regulating the softening of rubber nanocomposites under large amplitude oscillations. Herein, Payne effect in diverse filled vulcanizates is investigated for generalizing the common characteristics. Master curves of strain amplitude dependent storage modulus are created with respect to microscopic strain amplitude of the matrix, revealing a matrix-dominated elastic nonlinearity being independent of type and dispersity of filler, crosslinking density and sol fraction of matrix and filler-rubber interfacial interactions. However, carbonaceous fillers with higher affinity to the rubber matrices yield lower strain amplification and higher overshoot behavior in comparison with siliceous silica. The investigation would be illuminating for preparing rubber nanocomposites with optimized reinforcement and softening performances.
研究领域:
材料科学
·
高分子科学
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DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 6
·8448-8456
·
IF 9.9
Xiong Xiaosong,Qiao Qiao,Zhou Qi,Cheng Xinbing,Liu Lili,Fu Lijun,Chen Yuhui,Wang Bin,Wu Xiongwei,Wu Yuping
Metallic lithium is regarded as one of the most promising electrode materials to break through the energy density bottleneck of current commercial lithium-ion batteries. However, the practical implementation of lithium metal anode is limited by the unstable electrode interface significantly, which directly induces a low Coulombic efficiency, short cycling lifespan, and dendritic lithium growth behavior. In this study, via in situ electropolymerization, lithiophilic and conformal polyaniline layer is developed to improve the initial lithium nucleation and plating process, reducing the interface charge transfer resistance and promoting uniform lithium plating/stripping behavior. Meanwhile, the polyaniline layer exhibits good adhesion to the substrate. As a result, the Li/Cu half cell delivers a high Coulombic efficiency of 99.1% for 400 cycles at 1.0 mA·cm −2 with polyaniline layer. In addition, long-term stable cycling at a current density of 1.0 mA·cm −2 for 1300 h has been achieved for lithium metal anode. This strategy provides a new perspective for the practical lithium metal batteries.
研究领域:
材料科学
·
电化学
·
电池技术
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DOI
高影响因子
POLYMER BULLETIN
·
2020
·Vol. 78
·期 4
·2067-2083
·
IF 2.014
Shan Changli,Ning Chuang,Lou Jingjie,Xu Wei,Zhang Yingqiang
A series of UV-curable waterborne fluorinated polyurethane (UV-WFPU) were prepared successfully based on novel fluorinated side chain extender (F-TMP). The structure of F-TMP and particle size of UV-WFPU dispersions, contact angle (CA) and surface free energy, morphology, and damping property of UV-WFPU films were characterized through Fourier transform infrared spectroscopy, nanoparticle size analysis, contact angle test, scanning electron microscope and dynamic mechanical analysis (DMA), respectively. The results indicated that UV-WFPU dispersions had a particle size between 49.01 and 61.52 nm. The latex particle size and tan δ value of UV-WFPU films increased with the increase in F-TMP contents. The studies of surface properties confirmed that UV-WFPU films based on F-TMP had outstanding hydrophobicity properties. The highest CA of water and lowest surface free energy of UV-WFPU films reached 96.2° and 21.17 mJ/m 2 , respectively. Meanwhile, the DMA results showed UV-WFPU films possessed great damping property which had the broad temperature range enhanced by F-TMP, with a maximum value at 190.4 °C. The results of mechanical properties showed that the addition of fluorine increased in the tensile strength of the film. And these films have potential application values in the technical fields of damping, anti-corrosion and dust prevention.
研究领域:
材料科学
·
化学工程
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 23
·21379-21388
·
IF 2.22
Chang Jian,Li Hua,Yang Lei,Liu Hezhou
Surface electrolyte-philic functionalization of carbon aerogels (CAs) by surface-initiated electrochemically mediated atom transfer radical polymerization (SI-eATRP) of hydrophilic polymer brushes of poly(N-vinylpyrrolidone) (PVP) was successfully carried out. The modified composite electrode is more hydrophilic with better wettability in an aqueous electrolyte than the pristine CAs. The modified electrodes possess a higher specific capacitance of 279 F/g, excellent rate performance, and good cycling stability due to combining the advantages of both CAs and hydrophilic property. In addition, this study confirmed that higher electrode/electrolyte contact area lead to higher charge/discharge rates during the energy storage progress. Through the simple modification method, hydrophilic CAs with excellent properties were obtained which have promising application in energy conversion and storage fields.
研究领域:
材料科学
·
能源存储
·
化学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）