RSC Advances
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2025
·Vol. 15
·期 16
·12713-12722
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IF 4.6
Xiaofei Li,Yinao Jiao,Yupeng Li,Cheng Pan,Guozhi Fan,Yifei Long,Qunpeng Cheng,Haitao Yang
To extend the applications of phase-change materials to multiple scenarios, Fe3O4 nanoparticles were deposited on the surface of mica with a layer-like structure using a simple method, and composite phase-change materials (CPCMs) with dual-driven energy conversion performance were subsequently obtained via vacuum impregnation. The addition of boron nitride (BN) and cellulose nanofibers (CNFs) endowed the CPCMs with higher thermal conductivity (0.85 W m−1 K−1) and lower specific heat capacity (1.42 MJ m−2 K−1), thereby constructing an effective heat transfer channel. The photothermal conversion efficiency of the CPCMs reached up to 88.36%. The magnetic Fe3O4 nanoparticles endowed the CPCMs with magnetic responsiveness, enabling the phase transition process to complete within just 112 s under a magnetic field. With a high phase-change material loading (82.65%), the CPCMs maintained excellent thermal stability during the energy conversion process. These results provide guidance for the preparation of CPCMs with multiple types of efficient energy conversion.
研究领域:
材料科学
·
能源转换技术
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DOI
PubMed
高影响因子
DYES AND PIGMENTS
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2017
·
IF 3.473
Yan Wang,Ziwei Liu,Xiaoyu Lu,Guanhong Lu,Jing Sun
A facile and rapid method is reported to effectively in synthesizing high performance graphene based mica-titania antistatic pearlescent pigment. Znic powder is firstly introduced to prepare the composite pearlescent pigment as a reduction catalyst. Through a comparative analysis with previous Argon annealing reduction method, it can obviously increase 100–4600 fold antistatic performance of mica-titania pearlescent pigment at room temperature in a short time. The minimum volume resistivity of as-prepared composite pigments is 12 kΩ cm and decreases about 10 4 times than that without graphene. The composite pearlescent pigment samples also remain the silver white pearlescent effect, as well as that of raw mica-titania pigment. The stability of titanium chemical state and reduced graphene oxide have been proved by Raman and X-ray photoelectron spectroscopy tests. Since the method is efficient, relatively environmental friendly and low cost, it could be expected to satisfy a large-area application of antistatic pearlescent pigment.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
DESALINATION
·
2023
·
IF 9.9
Qiuhui Shi,Na Zhang,Dong Wang,Jiaojiao Zhang,Yiming Li,Zhining Wang
Dye recovery and desalination efficiency in textile wastewater treatment are of great significance, but the traditional treatment technologies cannot meet these two requirements simultaneously. In this study, a novel loose NF membrane was prepared by the assembly of PEI-modified mica (PEI-mica) and cellulose nanofibers (CNFs) on hydrolyzed polyacrylonitrile (HPAN) substrate via facile vacuum filtration. The combination of PEI-mica nanosheets and CNFs constructed a thin and loose “brick-mud” structure via electrostatic attraction and hydrogen bonding. The 2D nanochannels among the stacked PEI-mica nanosheets well-tailored by CNFs allowed the transport of water molecules and salt ions while resisting dye molecules. Due to the well-designed lamellar structure along with the excellent hydrophilicity , the PEI-mica/CNFs membrane possessed high water permeability (62.18 LMH/bar) and superior dye/salt separation efficiency, with outstanding dye retentions (i.e., Coomassie Brilliant Blue R250: 99.66 %, Congo Red: 98.89 %, and Evans Blue: 98.64 %) and low salt rejections (e.g., NaCl: 3.42 % and Na 2 SO 4 : 15.63 %). Besides, the composite membrane also showed good antifouling properties and operation stability, indicating its promising potential for practical textile wastewater treatment.
研究领域:
环境工程
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材料科学
·
水处理
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DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2023
·
IF 9.1
Dingxuan Zhao,Jiqiang Hu,Dongqing Wang,Jinchuan Yang,Hanqi Zhang,Bing Wang
High performance composites not only pursue high strength , light weight, but also need to have multifunctional characteristics. To further improve curing efficiency and mechanical properties of phthalonitrile resin (PN75) and give full play to its excellent thermal and dielectric properties , mica as reinforcement was introduced into PN75 to form particle-filled resin (Mica/PN75) and CFRP (Mica/PN75/CF) composites. The introduction of mica reduced the curing temperature of PN75 and improved the curing efficiency. The thermal stability of resin and composites was further improved. The bending strength of the two groups of mica reinforced resin increased by 44.87% and 55.97%, and the dielectric constant decreased from 3.3 to 2.7 and 2.5, respectively. The bending strength of the composites was increased by up to 19.9%, and the glass transition temperature of composites was increased by up to 26 °C after reinforcement. The multidirectional reinforcement of PN75 by mica was studied and analyzed in this work.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Junshan Liu,Na Qi,Shengjuan Dong,Shikao Shi,Jiye Wang,Lianshe Fu
Synthetic-mica materials have shown multifunctional performances due to their distinctive adhesion and cation exchange ability. In this work, a novel Eu 3+ -doped synthetic-mica named as barium tetrasilicate fluorphlogopite (BaMg 2 Si 4 O 10 F 2 ) phosphor was prepared by the high-temperature solid state reaction process for the first time. The as-prepared mica samples possess a distinct lamellar structure , as indexed by X-ray diffraction, scanning and transmission electron microscopy means. The photoluminescence results manifest that the phosphor can generate bright red emission at 614 nm corresponding to the characteristic 5 D 0 → 7 F 2 transition of Eu 3+ as excited with UV light, and the luminescence intensity is nearly 9-fold in comparison with that in original fluorphlogopite. The more fantastic result is that the emission intensity at 373 K still retains 95 % in respect to that at ambient temperature, demonstrating the phosphor system with excellent optical thermal stability. The optimal BaMg 2 Si 4 O 10 F 2 :8%Eu 3+ phosphor powder has been used to discern the latent fingerprints on the surface of diverse non-porous and semi-porous substrates, which reveal the superior visibility as irradiated with 254 nm UV light. The Eu 3+ -doped BaMg 2 Si 4 O 10 F 2 synthetic-mica is a promising phosphor material for latent fingerprint identification application.
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2020
·
IF 3.306
Xiangming Fang,Guanhong Lu,Asad Mahmood,Zhihong Tang,Ziwei Liu,Linlin Zhang,Yan Wang,Jing Sun
A novel ternary mica/TiO 2 /Fe 2 O 3 composite pearlescent pigment has been designed for the photocatalytic oxidation of gas-phase acetaldehyde in the application of indoor air purification. The mica/TiO 2 /Fe 2 O 3 -x (MTF-x, x = m Fe2O3 : m TiO2 = 0.5–2: 100) composites were synthesized by a sol-gel assisted hydrothermal method. The MTF-1.5 composite shows optimal photocatalytic performance, which is 1.8 times photodegradation efficiency and 2.2 times CO 2 mineralization efficiency higher than those of pure TiO 2 . The enhanced photocatalytic performance of MTF-x (x = 0.5–2) composites could be associated with enhanced reflectivity of mica, which eventually improved the light absorption properties. Also, the presence of TiO 2 /Fe 2 O 3 heterostructure facilitated charge separation in the MTF ternary composite. Besides, superoxide radical was proven as the decisive active species for the degradation of gaseous acetaldehyde. This work provides a systematic approach to develop a potential multi-functional pearlescent pigment to purify indoor air.
研究领域:
材料科学
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环境科学
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 25
·
IF 1.86
Linlin Wang,Yuelong Liu,Gousheng Liu
Hydrophobic mica particles were prepared by piranha solution activation, silanization, and copolymerization with acrylate monomers. Its surface morphology, hydrophilic properties, and thermogravimetric analysis changed differently in comparison with those of pristine mica. Scanning electron microscopy (SEM) showed that the modified (001) mica surface changed from flat to coarse. Thermogravimetric curves demonstrated that silane coupling agents and the grafted polymer were anchored on the modified-mica surface. The alternating surface polarity state was verified by different dispersion performances in the solvents. SEM images showed that the polypropylene (PP)/modified-mica composites had a better quality compatibility than the PP/untreated-mica composites. The PP/polymer-grafted-mica composites had improved mechanical properties, including stretching, tension, and impact properties. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44985.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 43
·20174-20186
·
IF 4.682
Wang Yafang,Dang Wanbin,Yao Cheng,Tian Cuiyu,Lu Zhaoqing
Traditional mica-based composites are limited to the application in high-voltage electric insulation by their underdeveloped breakdown strength and mechanical robustness. Herein, a novel double-network mica-based composite film was fabricated by introducing aramid nanofiber (ANF) and nanofibrillated cellulose (NFC), which cooperatively enhanced interfacial adhesion and reinforcing effect. The ANF-NFC/mica@PDA composite film exhibited high mechanical strength (~ 28.76 MPa), excellent dielectric breakdown strength (~ 33.45 kV/mm) and positive mechanical flexibility. Moreover, the composite represented stable dielectric property at high temperature, which meant the ANF-NFC/mica@PDA composite film could be applied in more complex environments. This work provides a new route toward manufacturing superior performance mica-based composites for the electrical insulation field.
研究领域:
材料科学
·
电气工程
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DOI
高影响因子
JOM
·
2023
·
IF 2.6
Da Yaling,Liu Jianxing,Xue Xiangxin
An ultraviolet (UV)-curing polymer coating is an environmentally friendly coating with no volatile organic compound emissions, which can be used for surface protection of steel. However, pure organic polymer coatings cannot meet the needs of practical applications because of their low hardness, poor thermal stability, and high shrinkage rate. In this paper, different contents of mica particles were mixed into epoxy acrylates to prepare UV-curing organic–inorganic composite coatings. The inorganic material was used to enhance the thermal stability and corrosion resistance performance to solve part of the problems faced by a pure organic polymer coating. This paper discusses the UV-curing process of the composite coating, the distribution of particles in the matrix resin, the mechanical properties of the coating, and its thermal stability and corrosion resistance. The results show that the prepared composite coatings show significant improvements in thermal stability and corrosion resistance. Compared with the epoxy acrylate coating, the T 10 of the mica-added composite coating with mica was increased by more than 100°C. At 15 g addition (373,070 Ω cm 2 ), there was a 35 times improvement in the total impedance after immersion in 3.5 wt.% NaCl solution for 24 h compared to that of the epoxy acrylate coating (10,799 Ω cm 2 ).
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DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Zhongli Zhang,Zhensheng Wu,Shuai Zheng,Haitao Yang,Fuqiang Tian
Aromatic polyimide (PI) is widely used in aerospace, microelectronics, and transformer insulation due to its excellent performance and design flexibility. With the rapid development of the military industry, the insulation layer of Tesla transformer windings demands low dielectric, high heat resistance, high breakdown strength, and aging resistance. This paper studies the performance of polyimide insulation film based on theoretical calculation and experimental methods. We used molecular simulation technology and density functional theory (DFT) to study the microscopic electrical and optical properties of polyimide molecules with eight structures, which saved time for subsequent experimental design. Then, we studied ordinary polyimide film, fluorinated polyimide film, and polyimide film with mica filler using experimental methods. We also analyzed the dielectric, electrical, and ageing properties of polyimide composites and finally prepared polyimide composites with excellent comprehensive performance.
研究领域:
材料科学
·
电气工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Xiangming Fang,Guanhong Lu,Asad Mahmood,Yan Wang,Xiao Wang,Xiaofeng Xie,Zhihong Tang,Jing Sun
The photocatalytic application of TiO 2 is limited due to low light harvesting abilities in the whole solar spectrum and fast recombination of the photoinduced electron-hole pairs. Herein, we report a TiO 2 -based ternary composite photocatalyst (MT@rGO-x; x = 0.05–0.2) with a pearlescent color effect, which incorporates a mica reflection core and a rGO multifunctional shell as cocatalysts. The micro flake composites were synthesized by a facile precipitation route and applied first to photodegrade gaseous acetaldehyde. MT@rGO-0.1 composite has optimal performance, which is 2.5 times photodegradation efficiency and 3 times CO 2 mineralization efficiency higher than those of pure TiO 2 . The enhanced photocatalytic performance of MT@rGO composite is associated with effectively improved light harvesting of TiO 2 by mica reflection. The presence of rGO facilitates the separation of electron-hole pairs and pollutant absorption. In addition, the superoxide radical was proved as the decisive active species for the photodegradation of acetaldehyde by electron spin resonance analyses and radical quenching tests. Our MT@rGO photocatalyst is expected to be applied as a functional and decorative additive of car paint, which is subject to photodegradation due to air pollutants.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Zenghui Wu,Guoan Tai,Runsheng Liu,Chuang Hou,Wei Shao,Xinchao Liang,Zitong Wu
The emergence of borophene has triggered soaring interest in the investigation of its superior structural anisotropy, a novel photoelectronic property for diverse potential applications. However, the structural instability and need of a metal substrate for depositing borophene restrict its large-scale applications toward high-performance electronic and optoelectric devices. van der Waals epitaxy is regarded as an efficient technique for growing superb two-dimensional materials onto extensive functional substrates, but the preparation of stable and controllable borophene on nonmetallic substrates is still not reported. Here, we demonstrate that borophene films can be synthesized onto a mica substrate by van der Waals epitaxy, where hydrogen and NaBH4 are respectively used as the carrier gas and the boron source. The lattice structure of the as-synthesized borophene coincides with the predicted α′-boron sheet. The borophene-based photodetector shows an excellent photoresponsivity of 1.04 A W–1 and a specific detectivity of 1.27 × 1011 Jones at a reversed bias of 4 V under illumination of a 625 nm light-emitting diode, which are remarkably superior to those of reported boron nanosheets. This work facilitates further studies of borophene toward its attractive properties and applications in novel optoelectronic devices and integrated circuits.
研究领域:
材料科学
·
纳米技术
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）