INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Zhichao Ren,Hongquan Yu,Jinsu Zhang,Xiangping Li,Sai Xu,Baojiu Chen
For the first time, nanotubes of Y3Ga5O12:Cr3+ (referred to as YGO:Cr3+) and Y3Ga5O12:Cr3+/Yb3+ (referred to as YGO:Cr3+/Yb3+) were produced via a single-needle electrospinning method. The nanotubes of YGO:Cr3+ and YGO:Cr3+/Yb3+ have outer diameters between 190 and 210 nm, whereas the inner diameter ranges between 70 and 80 nm, and the wall thickness ranges from 50 to 60 nm. The temperature sensitivity of YGO:0.02Cr3+ nanotubes was examined by studying how the Cr3+ lifetime changes with temperature. In the temperature range of 303 to 723 K, the peak values of Sa and Sr were 0.274 and 0.0067 K–1, respectively. Temperature sensing properties of YGO:0.02Cr3+/yYb3+ (y = 0.01, 0.02, and 0.05) nanotubes were evaluated via the FIR technique utilizing nonthermally coupled energy levels. The I970/I708 in the YGO:0.05Cr3+/0.01Yb3+ nanotubes displayed a maximal Sr value of 0.013 K–1 at 633 K, which exceeds that of other Cr3+-doped NIR phosphors previously reported and is promising for high-temperature measurements.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2023
·Vol. 109
·期 1
·86-96
·
IF 2.5
Miao Jinghao,Song Xiaolei,Duan Zhenxin,Lin Lin,Chen Rui,Guo Wenyu,Li Bingbing,Song Ying,Han Ying,Ran Xu
Organic dye contamination in water was a non-negligible threat to the environment. Mesoporous Al 2 O 3 nanofibers had been ideal and effective adsorbents for dye adsorption. Based on cost, security, and practicability, in this work, mesoporous Al 2 O 3 nanofibers with ribbon-like structure were prepared by electrospinning technology employing aluminum nitrate (AN) and polyvinyl butyral (PVB) as starting materials. Spinning solution was acquired by mixing the AN aqueous and PVB ethanol solutions. During the calcination of as-spun nanofibers at 600–1200 °C, mesopores emerged due to the decomposition of PVB. The evolution of pore structure and microstructure of fibers were characterized. Samples prepared at 800 °C had the highest BET surface area (96.2 m 2 ·g −1 ) and the strongest adsorption capacity for Congo red (230.41 mg·g −1 ). Adsorption processes fitted well with pseudo-2nd-order and Freundlich isotherm models. Ideal reuse performance of fibers favored their practical applications in water treatment technologies. Graphical Abstract
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
Journal of Functional Biomaterials
·
2023
·Vol. 14
·期 5
·248
·
IF 4.8
Ching-Wen Lou,Chun-Yu Hung,Mengdan Wei,Tingting Li,Bing-Chiuan Shiu,Jia-Horng Lin
A significant amount of research has been conducted on applying functional materials as surgical sutures. Therefore, research on how to solve the shortcomings of surgical sutures through available materials has been given increasing attention. In this study, hydroxypropyl cellulose (HPC)/PVP/zinc acetate nanofibers were coated on absorbable collagen sutures using an electrostatic yarn winding technique. The metal disk of an electrostatic yarn spinning machine gathers nanofibers between two needles with positive and negative charges. By adjusting the positive and negative voltage, the liquid in the spinneret is stretched into fibers. The selected materials are toxicity free and have high biocompatibility. Test results indicate that the nanofiber membrane comprises evenly formed nanofibers despite the presence of zinc acetate. In addition, zinc acetate can effectively kill 99.9% ofE. coliandS. aureus.Cell assay results indicate that HPC/PVP/Zn nanofiber membranes are not toxic; moreover, they improve cell adhesion, suggesting that the absorbable collagen surgical suture is profoundly wrapped in a nanofiber membrane that exerts antibacterial efficacy and reduces inflammation, thus providing a suitable environment for cell growth. The employment of electrostatic yarn wrapping technology is proven effective in providing surgical sutures with antibacterial efficacy and a more flexible range of functions.Keywords:HPC;zinc acetate;electrostatic wrapping yarns;surgical sutures
研究领域:
生物医学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Fei Bi,Zhemei Zheng,Rongrong Li,Ruiying Du,Li Zhao,Shanshan Xiao,Liyan Wang,Xiangting Dong
Photocatalytic composite membranes (BPMs) are preferred materials for wastewater treatment due to their high photocatalytic activity and ease of recovery. However, conventional blending modification methods for preparing BPMs often lead to drawbacks such as uneven distribution of photocatalysts, low loading efficiency, facile detachment of photocatalysts, poor reusability, and a limited specific surface area of the membranes. These issues significantly diminish their photocatalytic activity and restrict their practical applications. To address these challenges, this thesis introduces a novel preparation method for PVP-modified PVDF/BiOBr photocatalytic membranes, using a combination of electrospinning and solvothermal techniques. This approach enhances the stability of BiOBr microspheres on the PVDF nanofiber membranes, effectively tackling the issue of loading powder photocatalysts. These membranes, composed of PVDF nanofibers and uniformly sized BiOBr microspheres, exhibit a significant specific surface area of 15.69 m 2 /g. The modified PVDF/BiOBr photocatalytic membranes demonstrate remarkable degradation efficiencies: 100 % degradation of Rhodamine B (RhB) in 25 min, 93.8 % degradation of tetracycline (TC) in 30 min, and 74.6 % degradation of hexavalent chromium ions (Cr 6+ ) in 60 min. Moreover, after five cyclic experiments, the photocatalytic degradation rate of sample M 3 remains above 99 % with a minimal loss rate of only 0.5 %. The method developed for preparing PVDF/BiOBr photocatalytic membranes represents a universally applicable and straightforward strategy for fabricating advanced membrane materials. This preparation technique not only provides innovative design ideas and fabrication methods for new photocatalytic materials but also extends to other functional materials. The PVDF/BiOBr photocatalytic membrane materials hold great promise in offering technical and theoretical support for photocatalytic wastewater treatment.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 11
·2161
·
IF 4.967
Long Li,Xiuyu Liu,Lanfu Li,Sentao Wei,Qin Huang
In this work, rosin-based composite membranes (RCMs) were developed as selective sorbents for the preparation of dencichine for the first time. The rosin-based polymer microspheres (RPMs) were synthesized using 4-ethylpyridine as a functional monomer and ethylene glycol maleic rosinate acrylate as a crosslinking. RCMs were prepared by spinning the RPMs onto the membranes by electrostatic spinning technology. The optimization of various parameters that affect RCMs was carried out, such as the ratio concentration and voltage intensity of electrospinning membrane. The RCMs were characterized by SEM, TGA and FT-IR. The performances of RCMs were assessed, which included adsorption isotherms, selective recognition and adsorption kinetics. The adsorption of dencichine on RCMs followed pseudo-second-order and adapted Langmuir–Freundlich isotherm model. As for the RCMs, the fast adsorption stage appeared within the first 45 min, and the experimental maximum adsorption capacity was 1.056 mg/g, which is much higher than the previous dencichine adsorbents reported in the literature. The initial decomposition temperature of RCMs is 297 °C, the tensile strength is 2.15 MPa and the elongation at break is 215.1%. The RCMs have good thermal stability and mechanical properties. These results indicated that RCMs are a tremendously promising adsorbent for enriching and purifying dencichine from the notoginseng extracts.Keywords:rosin-based composite membranes;dencichine;electrostatic spinning technology;notoginseng extracts
研究领域:
药学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
Chinese Physics B
·
2015
·Vol. 24
·期 11
·118501
·
IF 1.603
Chang-Bai Liu,Ying He,Sheng-Lei Wang
In this work, pure α-Fe2O3 and Er2O3-Fe2O3 nanotubes were synthesized by a simple single-capillary electrospinning technology followed by calcination treatment. The morphologies and crystal structures of the as-prepared samples were characterized by scanning electron microscopy and x-ray diffraction, respectively. The gas-sensing properties of the as-prepared samples have been researched, and the result shows that the Er2O3-Fe2O3 nanotubes exhibit much better sensitivity to ethanol. The response value of Er2O3-Fe2O3 nanotubes to 10 ppm ethanol is 21 at the operating temperature 240°, which is 14 times larger than that of pure α-Fe2O3 nanotubes (response value is 1.5). The ethanol sensing properties of α-Fe2O3 nanotubes are remarkably enhanced by doping Er, and the lowest detection limit of Er2O3-Fe2O3 nanotubes is 300 ppb, to which the response value is about 2. The response and recovery times are about 4 s and 70 s to 10 ppm ethanol, respectively. In addition, the Er2O3-Fe2O3 nanotubes possess good selectivity and long-term stability.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yaru Li,Xiaoyan Liu,Jiwei Zhang,Haitao Yu,Jingwei Zhang
In order to more effectively alleviate the volume extension and shrinkage of the Si anode during Li intercalation/deintercalation processes, and also to improve the electron and ion transport dynamics, carbon coated Si-porous carbon composite fibres with a sandwich structure were prepared using a sacrificial template (ZIF-8) to construct mesoporous carbon, combined with electrospinning technology and subsequent hydrothermal carbon coating. The carbon fibre skeleton and carbon-coated sandwich structure provide support for the volume extension and shrinkage of Si, avoiding Si from directly contacting with the electrolyte, and forming a stable solid electrolyte interphase film. Furthermore, the polyvinylpyrrolidone spinning solution assists ZIF-8 to obtain a mesoporous structure inside the carbon fibre, which improves the specific surface area and pore volume of the composite material. In this case, the mesoporous structure also helps to alleviate the volume extension and shrinkage of Si during the charging /discharging processes and improves the transmission dynamics of lithium ions and electrons. Benefit from the unique structural features, this anode composite material exhibits enhanced electrochemical properties for Li-ion batteries, with a reversible specific capacity of 1114 mAh g −1 at 1 A g −1 , and demonstrates a capacity retention rate of 66% with a specific capacity of 740 mAh g −1 after 400 cycles.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2023
·
IF 6.1
Xiaoxiao Chen,Diedie Wei,Li Zhang,Zhouai Luo,Hao Guo,Hui Xu,Yingkun Fu,Yanlai Feng,Hongqin Yu,Jianxin He
Directional water transport (DWT) textiles, possessing moisture-wicking and evaporative fast-drying capabilities, help in creating a comfortable microenvironment for the human body. However, fabricating synthetic materials that follow Murray’s law and replicate the pore gradient of vascular plants remains challenging, thereby impeding the achievement of a good combination of moisture conduction, fast drying, and osmosis resistance. In this study, DWT membranes comprising three layers of pore/wetting gradients were constructed using a straightforward electrospinning/netting technique. The inner and intermediate layers, comprising hydrophobic polyurethane (PU) and hydrophilic PU-hydrolyzed polyacrylonitrile (PU-HPAN) nanofibers with average diameters of 1.83 µm and 255 nm, respectively, were prepared via electrospinning. Furthermore, the superhydrophilic outer layer (HPAM) comprised HPAN and a blend of acrylic acid/acrylamide with an average diameter of 76 nm. This layer was prepared via the electro-netting of dilute solution with high electrical conductivity, resulting in a spontaneous and continuous water transport, coupled with rapid drying. The DWT membranes exhibited an ultrahigh one-way transport capability (R) of 1270%, achieving an evaporation rate of 0.86 g h −1 . Additionally, they demonstrated rapid drying within 16 min, effectively preventing reverse osmosis under pressure. Therefore, these membranes can be applied for moisture wicking, water extraction, and micro fluidic control.
研究领域:
材料科学
·
生物工程
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产品关联
DOI
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Yanbin Zhang,Xifei Yin,Chenghu Zhang,Ying Li,Yinghui Sun,Jie Bai
Dry reforming of methane (DRM) provides an effective method for converting the two main greenhouse gases to hydrogen and carbon monoxide. In this work, Co-CeO2 and CoM-CeO2 (M = Ru, Pd, Pt) catalysts prepared by electrospinning technology were used for DRM. Due to the excellent catalytic performance of Pt itself, the CoPt-CeO2 catalyst had the highest DRM catalytic performance at 850 °C, with a methane (CH4) conversion of 94.12%, and remained stable in 24 h stability testing with almost no carbon deposition. The surface properties of the samples were characterized by Brunauer–Emmett–Teller (BET), temperature programmed reduction with H2 (H2-TPR), temperatureprogrammed desorption of CO2 (CO2-TPD), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results indicated that part of the reason for the excellent catalytic performance exhibited by adding noble metals to the catalyst is closely related to the high dispersion of active metals. More importantly, the addition of noble metals significantly increased the medium and strong alkaline sites of the catalysts. The abundant oxygen vacancies in CeO2 itself and the increased alkaline sites of noble metals were conducive to the CO2 adsorption and dissociation and the oxidation of deposited carbon. Moreover, the addition of noble metals promoted the interaction between the active metal and support. The results of this study provide a reference for the design of high-performance Co-based DRM catalysts.
研究领域:
催化化学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaobao Gong,Ping Gao,Yu Ji,Mingle Ding,Jianyong Yu,Shichao Zhang,Bin Ding
Two-dimensional (2D) nanoscale building blocks have gained significant interest in fields ranging from energy and environment to healthcare. Nevertheless, designing such large-sized nanoarchitectured materials based on environmentally friendly solvents has been regarded as a long-standing challenge. Here, the green electrospinning/netting technique employing water/ethanol as solvent is reported to assemble nanofibers and nanowires into 2D nanoarchitectured nanofiber/networks. Manipulation of the simultaneous injection and phase separation of jets and droplets from the Taylor cone enables the formation of nanofibers and nanowire (∼30 nm) networks on a large scale. Benefiting from the simplicity and universality, a wide variety of environmentally friendly 2D nanofiber/networks including waterborne polyurethane, ethanol-soluble polyamide, polyvinyl butyral, polyacrylic acid, and polyvinyl pyrrolidone have been fabricated. The developed nanofiber/nets membranes exhibit unique nanostructure, robust mechanical properties, and satisfactory application performances in areas of gas–solid separation (filtration efficiency of 99.9 % and resistance of 103.8 Pa), liquid–solid separation (rejection efficiency of 99.3 % and permeate flux of 3554.1 L m −2 h −1 ), and gas–liquid separation (waterproofness of 105 kPa and breathability of 3858 g m −2 d −1 ). This research could provide insights into the design and development of high-performance 2D nanomaterials for wide separation applications.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2024
·Vol. 26
·期 37
·5177-5186
·
IF 2.6
Zhichao Ren,Hongquan Yu,Xiangping Li,Jinsu Zhang,Sai Xu,Baojiu Chen
One-dimensional (1D) Y3Ga5O12:Pr3+ nanotubes (YGG:Pr3+ NTs) were prepared via single-nozzle electrospinning at 30% ambient humidity. The outer diameters of the YGG:Pr3+ NTs are between 190 and 210 nm, and the wall thickness is 35–45 nm. The nanotube consists of single-crystal YGG:Pr3+ nanoparticles. The optical properties of YGG:Pr3+ NTs with different Pr3+ concentrations, particularly their temperature-sensitive properties, were investigated. The YGG: 0.5% Pr3+ NTs exhibit the highest sensitivity of approximately 7.90 × 10−3 K−1 within the temperature range of 303–453 K.
研究领域:
材料科学
·
物理学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Feihong Gao,Xingyou Hu,Bin Sun,Chiqiang Liu,Lei Yang,Xili Hu,Lijun Qu,Francisco Fernández-Martínez,Dongming Xing,Xueji Zhang,Chaoyu You
Perovskite quantum dots demonstrate significant potential for application in flexible displays and wearable devices owing to their exceptional optoelectronic properties. However, the continuous, large-scale, and stable production of perovskite fluorescent fiber based structures, particularly filaments and yarns, remains a formidable challenge due to their inherent susceptibility to moisture and heat, which calls for an advancement of the current spinning technology. In this work, a two-nozzle electrospinning technique was proposed, and CsPbX 3 @polyacrylonitrile (PAN) (X = Cl, Br, I) perovskite luminescent filaments with exceptional stability and safety have been fabricated, meeting the requirements for knittable and wearable applications. These filaments demonstrate intense and narrow-band photoluminescence (with a photoluminescence quantum yield of 53.8 % and a full-width at half-maximum of 27 nm), as well as exceptional stability against water (>90 days), ultraviolet irradiation, high temperatures (85 °C), and acid-base corrosion (pH from 1.5 to 9). The filaments demonstrate minimal release of lead ions (1.997 %) with a cell viability rate of 97.725 %, suggesting low cytotoxicity. Furthermore, favorable mechanical properties of the individual filament of CsPbX 3 @PAN (including a tensile strength of 2.99 N which can be further enhanced to 14.37 N through twisting into yarns) make it suitable for seamless integration into weaving and knitting processes. All the merits of our samples present promising potential in multifunctional applications such as pattern displays, anti-counterfeiting measures, information encryption, and personalized design.
研究领域:
材料科学
·
纺织工程
·
光学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）