Advanced Fiber Materials
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2024
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IF 17.2
Wang Lin,Huang Tengxiao,Xu Xiaowei,Bu Nitong,Wu Zhenzhen,Zhao Yunpeng,Zhou Ya-Qin,Chen Su,Chen Yong,Pang Jie
Excess biological fluids around skin wounds can lead to infections and impede the healing process. Researchers have extensively studied dressings with varying water contents for wound care. However, hydrophilic and hydrophobic-hydrophilic dressings often face challenges such as slow fluid transfer and excessive retention. This study introduces an innovative approach involving the use of superhydrophobic–hydrophobic–hydrophilic dual-gradient electrospun nanofibers to form a 3D biomimetic nanofiber scaffold (3D BNSF). The 3D BNSF is composed of hydrophobic polycaprolactone and thermoplastic polyurethane, along with antibacterial, superhydrophobic nano-chitin particles. In vitro and in vivo experiments have demonstrated that this scaffold exhibits excellent antibacterial properties and compatibility with cells, facilitating complete wound healing and regeneration. This study offers a new perspective on the targeted acceleration of wound healing, with the potential to become an alternative strategy for clinical applications. Graphical Abstract
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CATALYSIS SURVEYS FROM ASIA
·
2025
·
IF 2.3
Jiang Huanjin,Yang Jie,Wang Wenhao,Fang Hailong,Chen Jixiang
TiO 2 supported Ni 3 Sn 2 intermetallic compound (IMC) catalysts were prepared by the coprecipitation method using resorcinol–formaldehyde resin (RF) and sodium dodecyl sulfate (SDS) as templates, and they were tested for in situ hydrodeoxygenation (HDO) of methyl palmitate using methanol as the hydrogen donor in the aqueous phase. It has been found that introducing SDS and RF enhances specific surface area, pore volume and pore diameter and reduces the Ni 3 Sn 2 IMC particles and their electronic interaction with TiO 2 . In in situ HDO of methyl palmitate, the catalysts prepared with co-introducing RF and SDS exhibit higher activity than that without templates and those separately introducing RF and SDS. The catalyst activity is mainly related to the Ni 3 Sn 2 IMCs particles size and the degree of the electronic interaction between Ni 3 Sn 2 and TiO 2 . The catalyst with introducing a suitable amount of RF and SDS gives the n-pentadecane yield of 87.3% at 330 °C, and it is slightly deactivated after reaction for five times due to carbon deposition and the sintering of Ni 3 Sn 2 IMC particles.
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METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
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2025
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IF 3.1
Liu Jiang,Tang Chaobo,Yang Jianguang,Nan Tianxiang,Zhu Qiang,Tang Shiyang,Fan Xiao-Bin
Arsenic is removed in the refining process of crude antimony in traditional antimony smelting, which produces a lot of arsenic-alkali-residue (AAR). This study proposes a two-stage roasting process to retain arsenic during volatile roasting of antimony sulfide concentrates. Calcium oxide was employed to retain arsenic in the calcine at low temperature, while antimony was volatilized into the fume as antimony trioxide at high temperature. The feasibility was verified by thermodynamic calculations. The effects of different factors on the volatilization efficiency of antimony and the retention efficiency of arsenic were investigated. Moreover, the leaching toxicity of arsenical calcine was tested. The volatilization efficiency of antimony and retention efficiency of arsenic were 93.06 and 70.12 pct at optimized conditions, respectively. The leaching concentration of arsenic in the arsenic retention calcine (below 5 mg·L −1 ) was far less than the leaching concentration of arsenic in AAR (915 mg·L −1 ).
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JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 15
·6627-6643
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IF 3.5
Zheng Dawei,Zhu Yingming,Wu Kejing,Liu Shengqiang,Fu Pengcheng,Lu Houfang,Liang Bin
Polymeric thermal insulation materials, especially polyurethane foams (PUF), are widely used in buildings to diminish the energy penalty but highly flammable. To reduce the flammability and smoke release of polyurethane foams without sacrificing the inherent properties, we report an efficient strategy involving pulsed chemical vapor deposition (Pulsed-CVD) and spray atomization to generate a phosphorous/SiO 2 nanolayer with a thickness below 200 nm on polydopamine modified rigid polyurethane foams. Due to the unique multilayers structure, the resultant composites showed an extra-ordinary thermal conductivity of 31.9 mW m −1 K −1 and enhanced compressive strength of 42%. Notably, the surface-treated PUF was hard to ignite in vertical test and had a very high limited oxygen index (LOI) value of 34.3%. Cone calorimetry (CC) results revealed that the total heat release (THR) and the total smoke release (TSR) were reduced by 32.9% and 64.3%, respectively. And the close-cell char structure was perfectly retained after CC test. The mechanism research suggested that silica and phosphorus promoted char formation, limited heat release and thermal degradation during combustion. These results indicate the strategy with a mild process has potential for industrialization with superior fire safety and structure stability in polymeric insulation materials. Graphical abstract The polydopamine (PDA)-coated commercial polyurethane foam was treated through the pulsed-CVD and spray atomization strategy, the surface was decorated with flame retardant layers, and the flame and fumes were efficiently suppressed by instant char-forming and dense surface carbon barrier without sacrificing its inherent properties.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Li Yanming,Deng Ming,Zhang Xuanyu,Xu Ting,Wang Ximeng,Yao Zhiwei,Wang Qiangqiang,Qian Lei,Xiang Chaoyu
Even though lead halide perovskite has been demonstrated as a promising optoelectronic material for next-generation display applications, achieving high-efficiency and stable pure-red (620~635 nm) emission to cover the full visible wavelength is still challenging. Here, we report perovskite light-emitting diodes emitting pure-red light at 628 nm achieving high external quantum efficiencies of 26.04%. The performance is attributed to successful synthesizing strongly confined CsPbI 3 quantum dots with good stability. The strong binding 2-naphthalene sulfonic acid ligands are introduced after nucleation to suppress Ostwald ripening, meanwhile, ammonium hexafluorophosphate exchanges long chain ligands and avoids regrowth by strong binding during the purification process. Both ligands enhance the charge transport ability of CsPbI 3 quantum dots. The state-of-the-art synthesis of pure red CsPbI 3 quantum dots achieves 94% high quantum efficiency, which can maintain over 80% after 50 days, providing a method for synthesizing stable strong confined perovskite quantum dots.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2025
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IF 0
Liu Pengxiao,Gao Shuai,Li Ying,Hou Bin,Liu Ning,Du Zhen,Lu Jing
This study investigated the aging and pollution behavior of acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) microplastics (MPs) exposed to residual chlorine in tap water distribution systems. The ABS and PC MPs in the aging processes were analyzed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Results revealed that 0.4 mg/L residual chlorine could induce morphological changes, increase surface oxygen-containing functional groups, and enhance the hydrophilicity of MPs at the CT value of 9216 mg·min/L. Additionally, both ABS and PC MPs released dissolved organic matter (DOM) into water, with higher DOM concentrations observed in the presence of residual chlorine. Besides, this interaction also led to the formation of trichloromethane (TCM). And the TCM production increased with higher MPs concentrations, smaller particle size, and longer chlorine exposure time.
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JOURNAL OF FLUORESCENCE
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2025
·
IF 3.1
Chen Dongxun,Lv Xulong,Liang Yanjie
In this work, Dy 3+ -doped Bi 2 SiO 5 nanoparticles with uniform spherical morphology and narrow size distribution have been successfully synthesized using a facile template-assisted approach. The effects of sintering temperature and Dy 3+ doping concentration on the phase composition, morphology, and luminescence properties of Bi 2 SiO 5 :Dy 3+ nanophosphor are systematically investigated through X-ray diffraction, scanning electron microscopy, and photoluminescence (PL) spectroscopy. X-ray diffraction results confirm that the synthesized Bi 2 SiO 5 :Dy 3+ nanospheres exhibit a pure tetragonal phase. Meanwhile, the phosphor particles are composed of monodisperse nanospheres with an average diameter of approximately 265 nm. Upon excitation at 388 nm, intense photoluminescence is noted in the blue ( 4 F 9/2 → 6 H 15/2 ) and yellow ( 4 F 9/2 → 6 H 13/2 ) spectral regions due to the characteristic emissions of Dy 3+ ions. Temperature-dependent PL spectra reveal that the optimized Bi 2 SiO 5 :2.5%Dy 3+ nanospheres maintain extraordinary luminescence thermal stability, retaining 81.0% of its emission intensity at 423 K compared to 303 K. The phosphor also showed remarkable color stability, with CIE chromaticity coordinates shifting minimally from (0.377, 0.413) at 303 K to (0.373, 0.407) at 423 K. This newly developed Bi 2 SiO 5 :Dy 3+ nanospheres exhibit commendable PL properties, enabling them as promising candidates for yellow phosphors in LEDs and display applications.
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Advanced Fiber Materials
·
2024
·
IF 17.2
Meng Xiangwei,Yu Meijie,Wang Chengguo
The exploitation of antennas with both electromagnetic stealth and efficient power transmission is of great significance in the information age. Therefore, from the perspective of multi-component composite and microtopography engineering, Ni/C@ZrO 2 ternary nanofibers are synthesized through electrospinning and subsequent carbonization. Profiting from the reasonable selection of components and exquisite micro-structure, the synergistic effect is fully developed, with the simultaneous achievement of perfect impedance matching and superior attenuation capacity. Precisely speaking, compared with carbon nanofibers and binary nanofibers, Ni/C@ZrO 2 exhibits the minimum reflection loss values of − 60.1 dB at 11.0 GHz, an ultrawide bandwidth up to 7.6 GHz at 3.3 mm, and radar cross-section values less than − 20 dBm 2 at most observation angles. A patch antenna with Ni/C@ZrO 2 acted as dielectric substrate is designed and displays efficient transmission efficiency, which means the theoretical feasibility of research on stealthy information transmission equipment, and enhances the competitiveness in comparison with other absorbent candidates. Hence, this study successfully prepares a high-performance electromagnetic wave absorbent, and sheds light on the future development of fibrous functional materials.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-16
·
IF 10.6
Hu Honglei,Zheng Shuting,He Chenxi,Zheng Yinfei,Wei Qiming,Chen Siwen,Wu Zede,Xu Yikai,Zhao Bingxia,Yan Chenggong
Radiotherapy-induced immune activation holds great promise for optimizing cancer treatment efficacy. Here, we describe a clinically used radiosensitizer hafnium oxide (HfO2) that was core coated with a MnO2 shell followed by a glucose oxidase (GOx) doping nanoplatform (HfO2@MnO2@GOx, HMG) to trigger ferroptosis adjuvant effects by glutathione depletion and reactive oxygen species production. This ferroptosis cascade potentiation further sensitized radiotherapy by enhancing DNA damage in 4T1 breast cancer tumor cells. The combination of HMG nanoparticles and radiotherapy effectively activated the damaged DNA and Mn2+-mediated cGAS-STING immune pathway in vitro and in vivo. This process had significant inhibitory effects on cancer progression and initiating an anticancer systemic immune response to prevent distant tumor recurrence and achieve long-lasting tumor suppression of both primary and distant tumors. Furthermore, the as-prepared HMG nanoparticles “turned on” spectral computed tomography (CT)/magnetic resonance dual-modality imaging signals, and demonstrated favorable contrast enhancement capabilities activated by under the GSH tumor microenvironment. This result highlighted the potential of nanoparticles as a theranostic nanoplatform for achieving molecular imaging guided tumor radiotherapy sensitization induced by synergistic immunotherapy.
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Science China-Chemistry
·
2024
·Vol. 67
·期 5
·1672-1679
·
IF 10.4
Mo Ziwei,Wei Shouhao,Xie Daibin,Zhu Kaihua,Li Hongxiong,Lu Xin,Liang Lirong,Du Chunyu,Liu Zhuoxin,Chen Guangming
Efficiently harvesting low-grade heat is crucial for sustainable energy management. Thermocells (TECs), inducing heat-to-electricity conversion via the thermogalvanic effect, have thus drawn tremendous attention in recent years. This study introduces a self-assembly approach for fabricating aerogel sheet electrodes (ASEs) tailored for TECs. The crafted ASEs retain a remarkable porous architecture with approximately 95% porosity, even with their slimmed-down thickness. Results reveal that the electrode composition has minimal influence on the thermopower of TECs. Notably, the porous ASE with tunned composition demonstrates an optimal effective surface area for the thermogalvanic effect, resulting in enhanced output current density. This balances the desirable traits of electrode compactness with abundant redox active sites, positioning it favorably against conventional bulky electrode designs. The TECs utilizing the optimized ASE achieve a peak output power of 22.10 µW cm −2 under a temperature difference of 30 K. Furthermore, a tubular TEC device is readily assembled and specially designed for harvesting heat energy from hot fluids. These findings underscore the potential of composite electrodes in the realm of low-grade heat harvest, paving the way for broader applications in sustainable energy solutions.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2024
·
IF 2.8
Xiong Neng,Jiang Lin-Li,Chen Jia-Yu,Lin Lei,Huang Jin-Rong,Shen Qi,Xue Ya-Ping,Zheng Yu-Guo
Hydrogenation plays an important role in the production of bulk and fine chemicals. In the present work, the hydrogenation process of 1-cyanocyclohexaneacetic acid (1-CA), a key intermediate in the chemo-enzymatic synthesis of the antiepileptic drug gabapentin, was investigated. The catalysts were screened, the operating parameters for the 1-CA hydrogenation were determined by response surface methodology, and the effects of biological impurities on the reaction and catalysts were investigated. The reaction temperature, reaction solution pH and reaction time were identified as the main factors for hydrogenation by single-factor experiments. Under the optimal reaction conditions: reaction temperature 110 °C, solution pH 12.33, reaction time 3.74 h, hydrogen pressure 2 MPa and stirring speed 500 rpm, the substrate conversion reached 100%, and the total product yield reached 96.40%, which was very close to the prediction (96.88%). It was demonstrated that biological impurities greatly affect the reaction rate of hydrogenation, as well as the activity and reusability of the catalyst, in which protein impurities lead to catalyst deactivation through cumulative deposition on the catalyst surface and within the pores.
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Journal of Food Measurement and Characterization
·
2024
·
IF 2.9
Li Meng,Huang Juliang,Chen Yiming,Liu Chang,Wu Xiuli
In this study, the principle of alkali-solution and acid-isolation was used for the extraction of red adzuki bean protein (AP). The extraction conditions were optimized by response surface methodology to obtain the optimal extraction of AP with the highest yield of 87.1%. The solubility, water-holding capacity, oil-holding capacity, foaming and emulsification properties were explored. The results were as follows: The maximum solubility was 73.85% at pH 10.0. The water holding capacity decreased first and then increased with the increase in temperature, and the oil holding capacity tended to be the opposite. The foaming capacity and foaming stability increased with the increase of the concentration, while the emulsifying capacity tended to increase first and then decrease, and reached the maximum value of 71.71 m 2 /g when the protein concentration was 0.8% (w/v). Xylose, maltose and maltodextrin were used to modify AP by glycosylation reaction. The results showed that the glycosylation modification could effectively improve the solubility, foaming properties and emulsification properties of AP, which provided theoretical support for the future utilization of AP.
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