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学者姓名：郭红霞
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摘要 ：
聚砜膜具有良好的耐高温性、耐酸碱性能和高的机械性能等,被广泛用于膜分离领域.但由于聚砜膜的表面疏水性,使其在水处理等方面的应用受到一定限制.针对聚砜膜的有机-无机改性,综述了近年来采用无机纳米粒子,如金属氧化物纳米粒子、表面修饰的氧化物纳米粒子、二维(2D)层状材料、金属有机共价材料(MOFs)和其他纳米粒子对聚砜膜的杂化改性及其研究进展,并对存在的问题和应用进行评述和展望.
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| GB/T 7714 | 张梦蕾 , 贾萌萌 , 秦振平 et al. 聚砜有机-无机杂化改性膜的研究进展 [J]. | 膜科学与技术 , 2021 , 41 (3) : 153-161 . |
| MLA | 张梦蕾 et al. "聚砜有机-无机杂化改性膜的研究进展" . | 膜科学与技术 41 . 3 (2021) : 153-161 . |
| APA | 张梦蕾 , 贾萌萌 , 秦振平 , 崔素萍 , 张雪红 , 郭红霞 . 聚砜有机-无机杂化改性膜的研究进展 . | 膜科学与技术 , 2021 , 41 (3) , 153-161 . |
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摘要 ：
Isophorone diisocyanate (IPDI) was encapsulated successfully within double-layered shells, and final microcapsules showed outstanding self-healing functions in cement paste. The well-dispersed microcapsules had a diameter of 347.0 +/- 103.4 mu m, shell thickness of 3.1 +/- 0.4 mu m, and core fraction around 74.8% +/- 1.9% by weight. The diameters of microcapsules were adjustable by varying agitation rates. The beginning weight-loss temperature of microcapsules was 200 degrees C, implying good thermal stability. The final microcapsules affected slightly the workability and setting time of fresh self-healing cement paste. Although the mechanical strength of hardened self-healing cement paste was decreased with the increase of microcapsule concentrations, the open porosity was improved obviously from 33.5% (control samples) to 31.8% when 5.0% by weight of microcapsules was introduced. The interfaces of microcapsules were compatible enough with cement paste without obvious delamination. Especially, the self-healing cement paste showed outstanding self-healing functions in open air when 10.0% by weight of microcapsules was introduced. (C) 2021 American Society of Civil Engineers.
关键词 ：
Isocyanates Isocyanates Microcapsules Microcapsules One-component One-component Self-healing cement paste Self-healing cement paste
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| GB/T 7714 | Dawei, Sun , Wenxu, Ma , Jikun, Ma et al. Workability and Crack Recovery Performance Investigation of IPDI Microcapsules-Based Self-Healing Cement Paste [J]. | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2021 , 33 (7) . |
| MLA | Dawei, Sun et al. "Workability and Crack Recovery Performance Investigation of IPDI Microcapsules-Based Self-Healing Cement Paste" . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING 33 . 7 (2021) . |
| APA | Dawei, Sun , Wenxu, Ma , Jikun, Ma , Qianjin, Mao , Mingzhang, Lan , Ziming, Wang et al. Workability and Crack Recovery Performance Investigation of IPDI Microcapsules-Based Self-Healing Cement Paste . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2021 , 33 (7) . |
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摘要 ：
一种聚合物固态聚电解质的改性方法，属于固态聚电解质隔膜技术领域。本发明采用PEO改性的纳米TiO2，然后与聚环氧烷‑聚苯醚类共聚物复合，有效地改善了无机颗粒与PEO聚合物基体的相容性，使得TiO2纳米颗粒更加均匀地分散在有机聚合物基体中，提高PEO链段的运动能力，进而有效降低了聚合物的结晶度，提高了其离子电导率。
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| GB/T 7714 | 郭红霞 , 秦周阳 , 程一辰 et al. 一种聚合物固态聚电解质的改性方法 : CN202110122226.9[P]. | 2021-01-28 . |
| MLA | 郭红霞 et al. "一种聚合物固态聚电解质的改性方法" : CN202110122226.9. | 2021-01-28 . |
| APA | 郭红霞 , 秦周阳 , 程一辰 , 李明晔 , 王子莹 , 刘孟茜 et al. 一种聚合物固态聚电解质的改性方法 : CN202110122226.9. | 2021-01-28 . |
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摘要 ：
In order to obtain low-cost and excellent adsorption materials, this paper used calcium acetate and water glass as raw materials to synthesis hydrated calcium silicate gel by precipitation method. The performance and structure of hydrated calcium silicate gel were systematically studied by X-ray photoelectron spectroscopy, fourier transform infrared spectroscopy, specific surface area analyzer and scanning electron microscope. Studies have shown that, non-crystal hydrated calcium silicate gel (CSH) were successfully prepared, and the removal rate of lead ion using CSH reached more than 90%. The adsorption process is consistent with the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, and the limit adsorption capacity reaches 263.17 mg·g-1. The acid treatment experiment proved that the adsorption capacity of lead ion using CSH was satisfactory, and the adsorption rate remained at >60% after 5 cycles. The research may provide a low-cost, high-efficiency and high stability adsorbent.
关键词 ：
adsorption properties adsorption properties adsorption stability adsorption stability calcium silicate hydrate gel calcium silicate hydrate gel synthesis synthesis
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| GB/T 7714 | Liu Shijie , Cui Suping , Guo Hongxia et al. Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel. [J]. | Materials , 2021 , 14 (4) . |
| MLA | Liu Shijie et al. "Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel." . | Materials 14 . 4 (2021) . |
| APA | Liu Shijie , Cui Suping , Guo Hongxia , Wang Yali , Zheng Yan . Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel. . | Materials , 2021 , 14 (4) . |
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摘要 ：
Cement based materials are especially vulnerable to serious temperature changes in saline land or marine environments, resulting in the degradation of structures and properties. As the main binding components in cement based materials, the investigation of the C−S−H gel structure and water molecules behaviors enabled the detail damage mechanism of cement-based material under different temperatures. In this study, C−S−H gel models were successfully constructed with the final chemical formula of (CaO)1.65(SiO2)(H2O)1.79. Systematical research works were performed on the structures and properties of both C−S−H gel and water molecules in different local environments by molecular dynamics (MD) under temperatures ranging from 100 K to 500 K. Subsequently, the time correlation function (TCF) and mean square displacement (MSD) methods were introduced to explore the dynamic properties of various chemical bonds. The volume expansion of C−S−H gel under higher temperatures resulted from stretched bond length between silicon atoms and oxygen atoms, and variation of corresponding bond angles. In addition, higher temperatures promoted the prolonged hydrogen bond length, thus reduced the number of hydrogen bond. Moreover, the polarization of water molecules was weakened gradually under higher temperatures, but water molecules’ orientation fluctuated obviously along the out of plane directions of interlayer region. Additionally, MSD results revealed that water molecules showed temperature dependent diffusion behaviors in different chemical environments. © 2020 Elsevier Ltd
关键词 ：
Bond length Bond length Bond strength (chemical) Bond strength (chemical) Calcium oxide Calcium oxide Cements Cements Degradation Degradation Hydrogen bonds Hydrogen bonds Molecular dynamics Molecular dynamics Molecules Molecules Silica Silica Silicon oxides Silicon oxides
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| GB/T 7714 | Sun, Dawei , Wang, Yali , Ma, Wenxu et al. C−S−H gel structure and water molecules behaviors under different chemical environments in a range of temperatures [J]. | Materials Today Communications , 2021 , 26 . |
| MLA | Sun, Dawei et al. "C−S−H gel structure and water molecules behaviors under different chemical environments in a range of temperatures" . | Materials Today Communications 26 (2021) . |
| APA | Sun, Dawei , Wang, Yali , Ma, Wenxu , Lan, Mingzhang , Wang, Ziming , Sun, Shibing et al. C−S−H gel structure and water molecules behaviors under different chemical environments in a range of temperatures . | Materials Today Communications , 2021 , 26 . |
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摘要 ：
As a unique characteristic two-dimensional transition metal dichalcogenide, molybdenum disulfide (MoS2) has become a promising membrane material for organic solvent nanofiltration (OSN) due to its good separation performance and stability. In this work, an MoS2 tubular ceramic membrane is prepared via an in situ hydrothermal method, exhibiting quite good stability in organic solvent. The 3D nanoflower-like structure of the MoS2 layer endows the modified membrane with an excellent OSN performance. With separation of a methanol solution of Evans blue (EB), the methanol flux was 403.1 L m-2 h-1 MPa-1 and the rejection of EB was 98.1%. The adhesion structures at the surface of MoS2/Al2O3 were evaluated using density functional theory, and an interfacial distance of 3.2 Å was obtained. Considering non-bond S-O interactions in addition to van der Waals forces, the work of adhesion (0.55 J m-2) and charge transfer process between the MoS2 layer and the ceramic substrate indicate good stability. The MoS2 tubular ceramic membrane maintains separation stability after performing in organic solvents of DMF for 80 h under cross-flow. © 2021 the Partner Organisations.
关键词 ：
Adhesion Adhesion Ceramic membranes Ceramic membranes Charge transfer Charge transfer Density functional theory Density functional theory Electron transport properties Electron transport properties Layered semiconductors Layered semiconductors Methanol Methanol Molybdenum compounds Molybdenum compounds Nanofiltration Nanofiltration Organic solvents Organic solvents Stability Stability Sulfur compounds Sulfur compounds Transition metals Transition metals Van der Waals forces Van der Waals forces
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| GB/T 7714 | Liu, Tongtong , Qin, Zhenping , Liu, Qiaohong et al. In situ growth of a tubular MoS2membrane on a ceramic tube with improved organic solvent nanofiltration performance [J]. | Materials Chemistry Frontiers , 2021 , 5 (7) : 3184-3191 . |
| MLA | Liu, Tongtong et al. "In situ growth of a tubular MoS2membrane on a ceramic tube with improved organic solvent nanofiltration performance" . | Materials Chemistry Frontiers 5 . 7 (2021) : 3184-3191 . |
| APA | Liu, Tongtong , Qin, Zhenping , Liu, Qiaohong , Li, Xuejian , Liu, Yue , An, Quan-Fu et al. In situ growth of a tubular MoS2membrane on a ceramic tube with improved organic solvent nanofiltration performance . | Materials Chemistry Frontiers , 2021 , 5 (7) , 3184-3191 . |
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摘要 ：
The magnetic property of soft magnetic material is much dependent on its shape and anisotropy. In this work, the flake-like FeNi3 particles with 3D-network structure have been synthesized through hydrazine reduction at ambient condition in the presence of sodium lignosulfonate (SLS). The morphology and crystalline structure of the FeNi3 nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and energy dispersion spectrum (EDS). Both of the static and dynamic magnetic property of the FeNi3 particles were investigated. The results indicated that the morphology of the FeNi3 particles changed from spherical to flake shape with increasing SLS concentration or reaction time. The possible mechanism on the variation of particles morphology was proposed. The static magnetic property indicated that the flake-like FeNi3 showed a higher saturation magnetization and coercivity than that of the spherical particles. Dynamic magnetic performance showed that the flake-like FeNi3 particles also exhibited significantly higher real part (μ') and imaginary part (μ') of the complex permeability than the spherical particles, especially in the range 0.6–1.0 GHz. © 2021 The Society of Powder Technology Japan
关键词 ：
Binary alloys Binary alloys High resolution transmission electron microscopy High resolution transmission electron microscopy Iron alloys Iron alloys Iron metallography Iron metallography Magnetic bubbles Magnetic bubbles Magnetic properties Magnetic properties Morphology Morphology Nanocrystalline materials Nanocrystalline materials Nanoparticles Nanoparticles Nickel metallography Nickel metallography Nitrogen compounds Nitrogen compounds Saturation magnetization Saturation magnetization Scanning electron microscopy Scanning electron microscopy Sodium Sodium Soft magnetic materials Soft magnetic materials Spheres Spheres Synthesis (chemical) Synthesis (chemical)
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| GB/T 7714 | Guo, Hongxia , Li, Mingye , Qin, Zhenping et al. Shape-controlled synthesis of flake-like FeNi3 nanoparticles based on sodium lignosulfonate [J]. | Advanced Powder Technology , 2021 , 32 (3) : 755-763 . |
| MLA | Guo, Hongxia et al. "Shape-controlled synthesis of flake-like FeNi3 nanoparticles based on sodium lignosulfonate" . | Advanced Powder Technology 32 . 3 (2021) : 755-763 . |
| APA | Guo, Hongxia , Li, Mingye , Qin, Zhenping , Li, Fan , Zhang, Xuehong , Wu, Wenzheng et al. Shape-controlled synthesis of flake-like FeNi3 nanoparticles based on sodium lignosulfonate . | Advanced Powder Technology , 2021 , 32 (3) , 755-763 . |
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摘要 ：
Molybdenum disulfide (MoS2) is widely used in membrane separation because of its outstanding chemical and structural stability. In this study, MoS2 nanosheets were in-situ grown on a tubular ceramic substrate through one-step hydrothermal synthesis with the graphene quantum dots (GQDs) incorporated in the precursor solution. The growth of the MoS2 nanosheets was inhibited due to the combination with GQDs through the Mo-O bond. Therefore, the number of transport channels in the MoS2/GQDs composite membrane were increased to improve the permeability. The results indicated that the MoS2/GQDs composite membrane have excellent permeances for both the aqueous solution and organic solvent. Moreover, the MoS2/GQDs composite membrane can be continuously operated in cross-flow filtration device for 100 h because the in-situ hydrothermal method has greatly improved the stability of membrane. The results indicated that the MoS2/GQDs composite membrane exhibits great potential in nanofiltration.
关键词 ：
Ceramic substrate Ceramic substrate Graphene quantum dots (GQDs) Graphene quantum dots (GQDs) in-situ hydrothermal in-situ hydrothermal Molybdenum disulfide (MoS2) Molybdenum disulfide (MoS2) Nanofiltration Nanofiltration
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| GB/T 7714 | Liu, Yue , Qin, Zhenping , Zhang, Xuehong et al. In-situ growth of graphene quantum dots modified MoS2 membrane on tubular substrate with high permeability for both water and organic solvent [J]. | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 . |
| MLA | Liu, Yue et al. "In-situ growth of graphene quantum dots modified MoS2 membrane on tubular substrate with high permeability for both water and organic solvent" . | JOURNAL OF MEMBRANE SCIENCE 627 (2021) . |
| APA | Liu, Yue , Qin, Zhenping , Zhang, Xuehong , Wang, Naixin , Liu, Tongtong , Cui, Suping et al. In-situ growth of graphene quantum dots modified MoS2 membrane on tubular substrate with high permeability for both water and organic solvent . | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 . |
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摘要 ：
Organic solvent nanofiltration is a promising separation technology for removing solute from an organic medium. However, the fabrication of organic solvent nanofiltration membranes with stable separation performance is still a challenge. Herein, a hydrophobic polyelectrolyte multilayer membrane was prepared through a layer-by-layer self-assembly and counterion exchange method. Poly(diallyl dimethyl ammonium chloride) (PDDA)/polyacrylic acid (PAA) multilayer was self-assembled on the surface of the hydrolyzed polyacrylonitrile substrate through electrostatic interaction. Simultaneously, calcium silicate hydrate (CSH) nanoparticles were in situ grown during the multilayer formation process due to the incorporation of precursor in polyelectrolyte solutions. Therefore, the surface roughness of the membrane was enhanced and the anti-swelling property of the polyelectrolyte multilayer was also improved. The hydrophilic [(PDDA/PAA-CSH)2.5]+Cl− membrane was then converted to the hydrophobic membrane through the counterion exchange between Cl− and perfluorooctanate (PFO−) ions. The obtained [(PDDA/PAA-CSH)2.5]+PFO− membrane has a water contact angle of 118°, which can be used to separate dyes from ethanol. Both the separation performance and stability of the polyelectrolyte multilayer membrane were improved through the in situ growth of calcium silicate hydrate nanoparticles and counterion exchange by perfluorooctanate ions. Therefore, this strategy may open a new avenue to prepare organic solvent nanofiltration membranes. © 2020 Elsevier B.V.
关键词 ：
Calcium silicate Calcium silicate Chlorine compounds Chlorine compounds Contact angle Contact angle Hydrates Hydrates Hydration Hydration Hydrophobicity Hydrophobicity Ions Ions Multilayers Multilayers Nanofiltration Nanofiltration Nanofiltration membranes Nanofiltration membranes Nanoparticles Nanoparticles Organic solvents Organic solvents Polyelectrolytes Polyelectrolytes Self assembly Self assembly Silicate minerals Silicate minerals Surface roughness Surface roughness
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| GB/T 7714 | Lu, Yahua , Qin, Zhenping , Wang, Naixin et al. Counterion exchanged hydrophobic polyelectrolyte multilayer membrane for organic solvent nanofiltration [J]. | Journal of Membrane Science , 2021 , 620 . |
| MLA | Lu, Yahua et al. "Counterion exchanged hydrophobic polyelectrolyte multilayer membrane for organic solvent nanofiltration" . | Journal of Membrane Science 620 (2021) . |
| APA | Lu, Yahua , Qin, Zhenping , Wang, Naixin , An, Quan-Fu , Guo, Hongxia . Counterion exchanged hydrophobic polyelectrolyte multilayer membrane for organic solvent nanofiltration . | Journal of Membrane Science , 2021 , 620 . |
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摘要 ：
一种高性能聚合物有机溶剂纳滤膜及其制备方法，属于膜分离技术领域。将嵌段聚醚酰胺(PEBAX)聚合物溶于溶剂得到PEBAX溶液，然后向该溶液中加入环糊精(CD)，用滤布过滤以除去杂质，静置脱泡，得到嵌段聚醚酰胺‑环糊精铸膜液；采用铸膜液在截留分子量小于等于20kDa的超滤膜基膜上制备膜；然后在交联剂中交联。本发明提升了膜的渗透通量，而且也提升了膜的分离性能。
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| GB/T 7714 | 郭红霞 , 刘紫洋 , 秦振平 et al. 一种高性能聚合物有机溶剂纳滤膜及其制备方法 : CN202010336413.2[P]. | 2020-04-24 . |
| MLA | 郭红霞 et al. "一种高性能聚合物有机溶剂纳滤膜及其制备方法" : CN202010336413.2. | 2020-04-24 . |
| APA | 郭红霞 , 刘紫洋 , 秦振平 , 崔素萍 , 贾萌萌 , 安全福 . 一种高性能聚合物有机溶剂纳滤膜及其制备方法 : CN202010336413.2. | 2020-04-24 . |
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