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学者姓名：王乃鑫
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摘要 ：
In this study, a facile strategy for in situ growth of covalent triazine frameworks (CTFs) membrane on alpha-Al2O3 substrate was presented. An intact CTFs based composite membrane was obtained in a solvothermal growth process. The structure and property of the CTFs composite membranes were investigated. The results indicated that CTFs could grow in the pores of the alpha-Al2O3 substrate to modify the transport channel. Due to the sieving effect of the CTFs aperture, the prepared CTFs composite membrane exhibited superior rejection for different types of dyes (>97%) with extremely low rejection for salts (<20%). Moreover, the CTFs composite membrane had a high permeability (448 L m(-2)h(-1) MPa-1) and good stability for dye desalination. This approach demonstrated the great potential of CTFs membranes for dye/salt separation.
关键词 ：
Covalent triazine frameworks Covalent triazine frameworks Dye/salt separation Dye/salt separation High permeability High permeability In situ growth In situ growth Nanofiltration Nanofiltration
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| GB/T 7714 | Wang, Xiangqiong , Wang, Naixin , Ni, Hongxu et al. In situ growth of covalent triazine frameworks membrane on alumina substrate for dye/salt separation [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2022 , 280 . |
| MLA | Wang, Xiangqiong et al. "In situ growth of covalent triazine frameworks membrane on alumina substrate for dye/salt separation" . | SEPARATION AND PURIFICATION TECHNOLOGY 280 (2022) . |
| APA | Wang, Xiangqiong , Wang, Naixin , Ni, Hongxu , An, Quan-Fu . In situ growth of covalent triazine frameworks membrane on alumina substrate for dye/salt separation . | SEPARATION AND PURIFICATION TECHNOLOGY , 2022 , 280 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Acetic acid, as one of the top 50 important chemicals, has been broadly applied for production of cellulose acetate, polyvinyl acetate, as well as synthetic fibers and fabrics, and so on. However, the acetic acid production always involves in water which should be removed. Thus, energy-efficient and environmental-friendly dehydration of acetic acid is highly required in current chemical industry. In this study, we proposed a 'hard-crosslinking-soft' strategy to construct a kind of organic-inorganic hybrid membrane by doping aminated silica (SiO2-NH2) nanoparticles into the polyelectrolyte complex (PEC) membrane for dehydration of acetic acid. The addition of SiO2-NH2 nanoparticles plays two roles: one is as the 'hard' part to overcome the over-swelling issue of 'soft' PEC membrane; another is creation of more free volume for water passing through. As a result, the proposed hybrid membrane could simultaneously augment the permeability and selectivity of the pervaporation membrane, breaking the notorious 'trade-off' restriction of separation membranes. The preparation parameters and operation condition on the performance of the membrane were detailed studied. The optimized membrane offers a flux of 1225 g/m2h and a separation factor of 1442 in dehydration of 10 wt% water/acetic acid mixtures at 50 degrees C, with pervaporation separation index of 1.77 x 106 g/m2h, among the top-tier separation performance. Besides, the prepared membrane could stably work for 144 h due to the chemical crosslinking by glyoxal, promising for the practical application for acetic acid dehydration.
关键词 ：
Acetic acid dehydration Acetic acid dehydration Organic-inorganic hybridization Organic-inorganic hybridization Pervaporation Pervaporation Polyelectrolyte complex Polyelectrolyte complex
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| GB/T 7714 | Jin, Cheng-Gang , Yin, Ming-Jie , Wu, Jia-Kai et al. Development of high-performance and robust membrane via 'hard-crosslinking-soft' technique for dehydration of acetic acid [J]. | JOURNAL OF MEMBRANE SCIENCE , 2022 , 643 . |
| MLA | Jin, Cheng-Gang et al. "Development of high-performance and robust membrane via 'hard-crosslinking-soft' technique for dehydration of acetic acid" . | JOURNAL OF MEMBRANE SCIENCE 643 (2022) . |
| APA | Jin, Cheng-Gang , Yin, Ming-Jie , Wu, Jia-Kai , Zhang, Wen-Hai , Wang, Naixin , An, Quan-Fu . Development of high-performance and robust membrane via 'hard-crosslinking-soft' technique for dehydration of acetic acid . | JOURNAL OF MEMBRANE SCIENCE , 2022 , 643 . |
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摘要 ：
Graphene oxide (GO) has been considered as a promising material to develop advanced nanofiltration membranes to resolve the current worldwide water scarcity issue, benefiting from its extraordinary physicochemical properties. However, loose-GO-nanosheet-stacking rendered membrane compaction during operation significantly harms the mass transfer of GO membranes. Here, we proposed an ice-crystal templating approach to simultaneously tailor the two mass transfer channels of GO membranes, i.e., nanochannels originated from the interlayer spacing and microporous defects arising from poorly stacking of nanosheets. The tunability of the ice-crystal templating strategy was verified by low-field nuclear magnetic resonance (LF-NMR) coupled with X-ray diffraction patterns technique. The result demonstrated that the interlayer spacing can be precisely tuned from 7.5 to 9.3 A while the volume of microporous defects can be adjusted from 2.9% to 24.6%. Thus, the optimized GO membrane (M2) was utilized for desalination of dye/NaCl mixtures and accomplished a high separation performance, for example, high water permeability of similar to 22.6 LMH/bar (10-fold enhancement compared with traditional GO membranes), 100% rejection to EB dyes, 19% rejection to NaCl, and long-term running stability (180 h). Therefore, the innovative ice-crystal templating fabrication techniques opens the door for the design of high-efficiency 2D material-based membranes. (C) 2021 Elsevier Ltd. All rights reserved.
关键词 ：
Dye/salt separation Dye/salt separation Graphene oxide membrane Graphene oxide membrane Ice-crystal templating Ice-crystal templating Interlayer spacing Interlayer spacing
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| GB/T 7714 | Zhang, Wen-Hai , Yin, Ming-Jie , Jin, Cheng-Gang et al. Ice-crystal templating approach for tailoring mass transfer channels in graphene oxide membranes for high-performance dye/salt separation [J]. | CARBON , 2021 , 183 : 119-127 . |
| MLA | Zhang, Wen-Hai et al. "Ice-crystal templating approach for tailoring mass transfer channels in graphene oxide membranes for high-performance dye/salt separation" . | CARBON 183 (2021) : 119-127 . |
| APA | Zhang, Wen-Hai , Yin, Ming-Jie , Jin, Cheng-Gang , Liu, Zhi-Jie , Wang, Naixin , An, Quan-Fu . Ice-crystal templating approach for tailoring mass transfer channels in graphene oxide membranes for high-performance dye/salt separation . | CARBON , 2021 , 183 , 119-127 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The robustness of carbon nanomaterials and their potential for ultrahigh permeability has drawn substantial interest for separation processes. However, graphene oxide membranes (GOms) have demonstrated limited viability due to instabilities in their microstructure that lead to failure under cross-flow conditions and applied hydraulic pressure. Here we present a highly stable and ultrapermeable zeolitic imidazolate framework-8 (ZIF-8)-nanocrystal-hybridized GOm that is prepared by ice templating and subsequent in situ crystallization of ZIF-8 at the nanosheet edges. The selective growth of ZIF-8 in the microporous defects enlarges the interlayer spacings while also imparting mechanical integrity to the laminate framework, thus producing a stable microstructure capable of maintaining a water permeability of 60 l m-2 h-1 bar-1 (30-fold higher than GOm) for 180 h. Furthermore, the mitigation of microporous defects via ZIF-8 growth increased the permselectivity of methyl blue molecules sixfold. Low-field nuclear magnetic resonance was employed to characterize the porous structure of our membranes and confirm the tailored growth of ZIF-8. Our technique for tuning the membrane microstructure opens opportunities for developing next-generation nanofiltration membranes.
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| GB/T 7714 | Zhang Wen-Hai , Yin Ming-Jie , Zhao Qiang et al. Graphene oxide membranes with stable porous structure for ultrafast water transport. [J]. | Nature nanotechnology , 2021 , 16 (3) : 337-343 . |
| MLA | Zhang Wen-Hai et al. "Graphene oxide membranes with stable porous structure for ultrafast water transport." . | Nature nanotechnology 16 . 3 (2021) : 337-343 . |
| APA | Zhang Wen-Hai , Yin Ming-Jie , Zhao Qiang , Jin Cheng-Gang , Wang Naixin , Ji Shulan et al. Graphene oxide membranes with stable porous structure for ultrafast water transport. . | Nature nanotechnology , 2021 , 16 (3) , 337-343 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Heavy metal pollution is one of the most serious environmental problems. Nanofiltration (NF) is an effective and potential membrane separation technology for removal of heavy metal ions from water. However, the separation performance and chlorine resistance of NF membranes should be further improved in industry. Herein, to obtain exceptional water permeability and chlorine resistance, novel positively charged polyamide (PA-PDMC) NF membranes were fabricated by surface-initiated atom transfer radical polymerization (SI-ATRP), through which methacryloxyethyltrimethyl ammonium chloride (DMC) was grafted to the 2-bromoisobutyryl bromide (BIBB) exposed on the surface of polyamide (PA-Br1) membrane. The graft length of positively charged polymer chains were controlled by ATRP time, which furtherly exerted influences on the surface structures and properties of PA-PDMC membranes. At the optimal graft content, the retentions to MgCl2, CaCl2, CuCl2, ZnCl2 of the as-prepared PA-PDMC membrane were 92.8%, 90.8%, 93.5% and 96.8% respectively with the flux of 82.5 L m(-2) h(-1), which maintained stability during the long-term operation process of 168 h. Moreover, the PA-PDMC membrane exhibited exceptional chlorine resistance at the chlorination condition of 12,000 ppm h.
关键词 ：
High flux High flux Interfacial polymerization Interfacial polymerization Polyamide Polyamide Surface-initiated atom transfer radical polymerization Surface-initiated atom transfer radical polymerization Tunable charge quantity Tunable charge quantity
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| GB/T 7714 | Wu, Bin , Weng, Xiao-Dan , Wang, Naixin et al. Chlorine-resistant positively charged polyamide nanofiltration membranes for heavy metal ions removal [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2021 , 275 . |
| MLA | Wu, Bin et al. "Chlorine-resistant positively charged polyamide nanofiltration membranes for heavy metal ions removal" . | SEPARATION AND PURIFICATION TECHNOLOGY 275 (2021) . |
| APA | Wu, Bin , Weng, Xiao-Dan , Wang, Naixin , Yin, Ming-Jie , Zhang, Lin , An, Quan-Fu . Chlorine-resistant positively charged polyamide nanofiltration membranes for heavy metal ions removal . | SEPARATION AND PURIFICATION TECHNOLOGY , 2021 , 275 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Incorporating hydrophilic nanomaterial fillers into a polymeric matrix enables a high-performance ultrafiltration membrane. 2D Ti3C2TX nanosheets are promising candidates due to their hydrophilic nature and good dispersion ability in the organic solvent. In this study, novel polysulfate (PSE)/Ti3C2TX ultrafiltration membranes were prepared by non-solvent induced phase separation (NIPS) method. The phase inversion process of the PSE/Ti3C2TX casting membranes was visualized. Ti3C2TX nanosheets could tune the phase inversion process effectively and promote the phase inversion speed with an ultralow content of 0.05 wt%. As a result, the hydrophilic property and porosity of PSE/Ti3C2TX membrane could be improved. The skin layer thickness was significantly reduced, resulting in saliently ultrafiltration performance, i.e., a pure water flux (PWF) of 685 L*m(-2)*h(-1) (LMH) with a bovine serum albumin (BSA) rejection of 97%. The proposed ultralow Ti3C2TX doping in the casting solutions method offers a versatile platform to manipulate the phase inversion progress during the industrially NIPS process, and enhanced the separation performance of ultrafiltration membranes.
关键词 ：
High-performance UF membrane High-performance UF membrane Polysulfate Polysulfate Ti3C2TX nanosheets Ti3C2TX nanosheets
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| GB/T 7714 | Zhou, Jing-Yuan , Yin, Ming-Jie , Wang, Zhi-Peng et al. Ultralow Ti3C2TX doping polysulfate membrane for high ultrafiltration performance [J]. | JOURNAL OF MEMBRANE SCIENCE , 2021 , 637 . |
| MLA | Zhou, Jing-Yuan et al. "Ultralow Ti3C2TX doping polysulfate membrane for high ultrafiltration performance" . | JOURNAL OF MEMBRANE SCIENCE 637 (2021) . |
| APA | Zhou, Jing-Yuan , Yin, Ming-Jie , Wang, Zhi-Peng , Wang, Naixin , Qin, Zhenping , An, Quan-Fu . Ultralow Ti3C2TX doping polysulfate membrane for high ultrafiltration performance . | JOURNAL OF MEMBRANE SCIENCE , 2021 , 637 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Polydimethylsiloxane (PDMS) has been widely used in gas separation, pervaporation, and organic solvent nanofiltration. The crosslinking and penetration behavior of PDMS has been of great importance for fabricating composite membranes. In this study, an in-situ low-field nuclear magnetic resonance (LF-NMR) spectroscopy was employed to probe the crosslink density of PDMS during the crosslinking process. The relationship between crosslink density and nanostructure of PDMS selective layer was systematically investigated. It was found when the PDMS network had low crosslink density (υe -3 mol cm-3), the un-crosslinked PDMS chains could easily infiltrate into the pores of the substrate, leading to a defective active layer. Therefore, the rejection for Evans blue from organic solvents was below 3.9%. With the increasing crosslink density to 1.57 × 10-3 mol cm-3, the integrity of the PDMS selective layer was remarkably reinforced with a rejection of 99.0%. Moreover, the as-prepared membrane exhibited good performance for concentrating trace vitamin B12 from different solvents. The swelling property was responsive monitored with T2 relaxation time using LF-NMR. © 2021 Elsevier B.V.
关键词 ：
Composite membranes Composite membranes Gas permeable membranes Gas permeable membranes Microchannels Microchannels Nanofiltration Nanofiltration Nuclear magnetic resonance spectroscopy Nuclear magnetic resonance spectroscopy Organic solvents Organic solvents Polydimethylsiloxane Polydimethylsiloxane Pulse width modulation Pulse width modulation Silicones Silicones
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| GB/T 7714 | Li, Chong , Li, Jie , Cao, Tengxuan et al. Impact of crosslinking on organic solvent nanofiltration performance in polydimethylsiloxane composite membrane: Probed by in-situ low-field nuclear magnetic resonance spectroscopy [J]. | Journal of Membrane Science , 2021 , 633 . |
| MLA | Li, Chong et al. "Impact of crosslinking on organic solvent nanofiltration performance in polydimethylsiloxane composite membrane: Probed by in-situ low-field nuclear magnetic resonance spectroscopy" . | Journal of Membrane Science 633 (2021) . |
| APA | Li, Chong , Li, Jie , Cao, Tengxuan , Cai, Peng , Wang, Naixin , An, Quan-Fu . Impact of crosslinking on organic solvent nanofiltration performance in polydimethylsiloxane composite membrane: Probed by in-situ low-field nuclear magnetic resonance spectroscopy . | Journal of Membrane Science , 2021 , 633 . |
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摘要 ：
In recent years, metal-organic framework (MOF) membranes have attracted much attention in many fields. However, the fabrication of MOF membrane with defect-free ultrathin separation layer on the surface of a substrate is very difficult. In this study, freezing assisted in situ growth strategy was used to prepare a nano-confined ZIF-8 composite membrane on a porous ceramic substrate. The frozen alumina substrate with the metal ion ice crystal inside the pores was immersed in ligand solution for the growth of ZIF-8 crystals. Then, ZIF-8 nanoparticles were grown inside the pores rather than on the surface of the substrate. The morphology and structure of the ZIF-8 particles and nano-confined composite membranes were characterized by XRD, SEM, FTIR, EDS, and nanoindentation. The obtained nano-confined ZIF-8 composite membrane exhibited excellent separation performance and stability for removing dyes from water. The influence of preparation conditions on membrane structure and property was also investigated. The freezing assisted method may provide an avenue for preparing MOF membranes in other fields. © 2021 Elsevier B.V.
关键词 ：
Alumina Alumina Aluminum oxide Aluminum oxide Ceramic membranes Ceramic membranes Composite membranes Composite membranes Crystalline materials Crystalline materials Freezing Freezing Metal ions Metal ions Metals Metals Morphology Morphology Organometallics Organometallics Substrates Substrates
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| GB/T 7714 | Ma, Kui , Wang, Naixin , Wang, Chengcheng et al. Freezing assisted in situ growth of nano-confined ZIF-8 composite membrane for dye removal from water [J]. | Journal of Membrane Science , 2021 , 632 . |
| MLA | Ma, Kui et al. "Freezing assisted in situ growth of nano-confined ZIF-8 composite membrane for dye removal from water" . | Journal of Membrane Science 632 (2021) . |
| APA | Ma, Kui , Wang, Naixin , Wang, Chengcheng , An, Quan-Fu . Freezing assisted in situ growth of nano-confined ZIF-8 composite membrane for dye removal from water . | Journal of Membrane Science , 2021 , 632 . |
| 导入链接 | NoteExpress RIS BibTex |
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 . |
| 导入链接 | NoteExpress RIS BibTex |
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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