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学者姓名:陈怀银

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A rationally thin composite membrane with differentiated pore structure for industrial-scale alkaline water electrolysis SCIE
期刊论文 | 2025 , 16 (1) | NATURE COMMUNICATIONS
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Abstract :

Alkaline water electrolysis is one of the most prospective technologies for large-scale production of green hydrogen. Nevertheless, current porous membranes face the problem of weak ion transport or poor gas barrier performance. Here, we demonstrate a facile yet massive two-step casting and phase separation strategy to design a thin, asymmetric pore-structure modulated composite membrane for efficient, safe, and industrial-grade alkaline water electrolysis. The prepared composite membrane shows better electrolytic performance (1.71 V at 1 A cm-2) and stability (working for 6352 h). In addition, an industrial-grade electrolyzer equipped with composite membranes exhibits higher hydrogen production efficiency (1.03 Nm3h-1), H2 purity (99.9%), and faster dynamic response (less than 20 min) compared to mainstream commercial membranes. Ultimately, we propose a semi-empirical model based on the operational characteristics of an electrolyzer equipped with composite membranes and predicting its matching behavior with dynamic renewable energy sources. This work explores the viability of manufacturing high-performance alkaline water electrolysis membranes for green hydrogen production under industrial conditions.

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GB/T 7714 You, Jian , Lu, Jinyu , Liu, Chuanli et al. A rationally thin composite membrane with differentiated pore structure for industrial-scale alkaline water electrolysis [J]. | NATURE COMMUNICATIONS , 2025 , 16 (1) .
MLA You, Jian et al. "A rationally thin composite membrane with differentiated pore structure for industrial-scale alkaline water electrolysis" . | NATURE COMMUNICATIONS 16 . 1 (2025) .
APA You, Jian , Lu, Jinyu , Liu, Chuanli , Wang, Wei , Li, Yongzhao , Gao, Yuanzhong et al. A rationally thin composite membrane with differentiated pore structure for industrial-scale alkaline water electrolysis . | NATURE COMMUNICATIONS , 2025 , 16 (1) .
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A rationally thin composite membrane with differentiated pore structure for industrial-scale alkaline water electrolysis Scopus
期刊论文 | 2025 , 16 (1) | Nature Communications
Dual synergistic effects of novel modifier AO-g-C3N4 on the fluidity and oxidation resistance for high performance PPS resin SCIE
期刊论文 | 2025 , 57 | COMPOSITES COMMUNICATIONS
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Abstract :

As the raw material for fabricating polyphenylene sulfide (PPS) fibers, PPS resin exhibits great processing and application value. However, the oxidative cross-linking among PPS molecules at high temperatures causes increasing melt viscosity and decreasing fluidity, making PPS processing difficult and lower production quality and efficiency. In this research, we realize the dual improvement of PPS resin in the fluidity and oxidation resistance by introducing a new AO-g-C3N4 composite modifier. First, an antioxidant (AO) was grafted onto the surface of graphitic carbon nitride (g-C3N4) through amination to synthesize AO-g-C3N4. Subsequently, AO-g-C3N4 was incorporated into PPS resin using the melt extrusion process, yielding a novel flow-enhancing and antioxidant PPS-based composite material. It is found that the AO-g-C3N4/PPS material possesses excellent properties with a significantly raised melt index (>50 %) and notably decreased shear viscosity (>20 %). Besides, the dynamic oxidation induction temperature of AO-g-C3N4/PPS has increased, indicating inhibited oxidative cross-linking, while the crystallinity has increased. These suggest that the incorporation of AO-g-C3N4 into PPS resin can enhance its fluidity and antioxidation properties, providing valuable insight for the modification research of PPS resin. The AO-g-C3N4/PPS exhibits the characteristic of easier processing, which offers promising prospects for developing the downstream industry of PPS resin.

Keyword :

Antioxidant (AO) Antioxidant (AO) Flow-antioxidation Flow-antioxidation Graphitic carbon nitride (g-C3N4) Graphitic carbon nitride (g-C3N4) Melt blending Melt blending Polyphenylene sulfide (PPS) Polyphenylene sulfide (PPS)

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GB/T 7714 Wang, Wei , Cao, Hong , You, Jian et al. Dual synergistic effects of novel modifier AO-g-C3N4 on the fluidity and oxidation resistance for high performance PPS resin [J]. | COMPOSITES COMMUNICATIONS , 2025 , 57 .
MLA Wang, Wei et al. "Dual synergistic effects of novel modifier AO-g-C3N4 on the fluidity and oxidation resistance for high performance PPS resin" . | COMPOSITES COMMUNICATIONS 57 (2025) .
APA Wang, Wei , Cao, Hong , You, Jian , Li, Yongzhao , Yu, Weihe , Chen, Huaiyin et al. Dual synergistic effects of novel modifier AO-g-C3N4 on the fluidity and oxidation resistance for high performance PPS resin . | COMPOSITES COMMUNICATIONS , 2025 , 57 .
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Dual synergistic effects of novel modifier AO-g-C3N4 on the fluidity and oxidation resistance for high performance PPS resin Scopus
期刊论文 | 2025 , 57 | Composites Communications
Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation SCIE
期刊论文 | 2025 , 714 | JOURNAL OF MEMBRANE SCIENCE
WoS CC Cited Count: 2
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Abstract :

Highly permeable polyamide (PA) membranes with precise ion selection can be used for many energy-efficient chemical separations but are limited by membrane inefficiencies. Herein, polyphenol-mediated ZIF-8 nano- particles with hydroxyl-rich hollow structure were synthesized by tannic acid tailored regulation. PA-based membranes with fast penetration, high retention, and precise Cl-/SO42- selection were then synthesized through spatially and temporally controlling interfacial polymerization with modified ZIF-8 nanoparticles (tZIF8) as aqueous phase additives or as interlayers. The effects of the embedding position of tZIF-8 on the structure, morphology, physicochemical properties, and performance of PA-based membranes were explored through a sequence of characterization techniques. The results revealed that the PA-based membrane with tZIF-8 embedded in the PA layer could achieve a high water permeance of 24.8 L m- 2 h- 1 bar- 1 with a high retention of 99.4 % Na2SO4 and a Cl-/SO42- selectivity of 141, which was superior to most state-of-the-art PA-based membranes. Comparatively, the Cl-/SO42- selection of the PA-based membrane with tZIF-8 embedded between the PA layer and the substrate was 136, while the water permeance was slightly enhanced to 28.2 L m- 2 h- 1 bar- 1 . Excitingly, the resulting membranes all exhibit superior antifouling properties and stability. Our facile strategy for tuning membrane microstructures provides new ideals into the development of highly permeable and excellently selective PA-based membranes for precise ion sieving.

Keyword :

Different embedding positions Different embedding positions Interfacial polymerization Interfacial polymerization Ion sieving Ion sieving Nanoparticles Nanoparticles Spatial-temporal regulation Spatial-temporal regulation

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GB/T 7714 Lai, Xing , Zhang, Hongxiang , Xu, Weiye et al. Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 714 .
MLA Lai, Xing et al. "Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation" . | JOURNAL OF MEMBRANE SCIENCE 714 (2025) .
APA Lai, Xing , Zhang, Hongxiang , Xu, Weiye , You, Jian , Chen, Huaiyin , Li, Yongzhao et al. Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 714 .
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Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation Scopus
期刊论文 | 2025 , 714 | Journal of Membrane Science
Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation EI
期刊论文 | 2025 , 714 | Journal of Membrane Science
Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation SCIE
期刊论文 | 2025 , 601 | DESALINATION
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Abstract :

The growing complexity of dyeing and printing effluents has presented considerable challenges for their effective treatment and recycling. Recently, there has been a notable increase in the development of loose nanofiltration (NF) membranes, which are characterised by their exceptional environmental resilience, high throughput, and superior dye/salt selectivity. This work presents the development of a new loose NF membrane prepared from a modified polymer called poly(ether sulfone ether ketone ketone) (PESEKK). The membrane features a dense- loose-support structure and is prepared through a straightforward one-step, non-solvent induced phase separation (NIPS) technique, eliminating the need for heating or post-treatment. Precise regulation of membrane pore size down to 4.27 nm can be achieved through modulation of PESEKK and pore-former composition. The membranes could separate positively and negatively charged dyes in mixed dye solutions accurately and selectively. Additionally, the membrane demonstrated exceptional dye/salt selective separation with a high water flux of 230.7 L m- 2 h- 1 bar- 1 , Congo red rejection of 99.91 +/- 0.13 %, NaCl rejection of 2.71 +/- 0.23 %, and a separation factor (alpha) of 347.4, outperforming state-of-the-art membranes. Remarkably, PESEKK membrane maintained outstanding stability and separation performance for up to 200 h under extreme environments, including NaOH solution (up to 9 mol L-1), NaClO solution (up to 40,000 mg L-1 h), n-hexane, isopropanol, and methanol. This high-performing loose NF membrane, developed using innovative polymer materials, offers a promising solution for treating the challenging wastewater generated by printing and dyeing processes.

Keyword :

Dense-loose-supporting structure Dense-loose-supporting structure Dye/salt separation Dye/salt separation Loose nanofiltration Loose nanofiltration Non-solvent induced phase separation Non-solvent induced phase separation Poly(ether sulfone ether ketone ketone) Poly(ether sulfone ether ketone ketone)

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GB/T 7714 Zhang, Hongxiang , Lai, Xing , You, Jian et al. Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation [J]. | DESALINATION , 2025 , 601 .
MLA Zhang, Hongxiang et al. "Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation" . | DESALINATION 601 (2025) .
APA Zhang, Hongxiang , Lai, Xing , You, Jian , Wang, Wei , Wu, Meihua , Liu, Longmin et al. Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation . | DESALINATION , 2025 , 601 .
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Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation EI
期刊论文 | 2025 , 601 | Desalination
Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation Scopus
期刊论文 | 2025 , 601 | Desalination
Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis SCIE
期刊论文 | 2025 , 725 | JOURNAL OF MEMBRANE SCIENCE
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Abstract :

Green hydrogen is currently the dominant trend in the evolution of hydrogen energy, producing almost no greenhouse gas emissions. Alkaline water electrolysis (AWE) is recognized as a leading and well-established technology for producing green hydrogen. However, safety hazards may occur during hydrogen production currently as defective commercial separate membranes used in the AWE process. Therefore, it is imperative to create a membrane characterized by low area resistance, high stability, and high bubble point pressure (BPP) to realize high-performance AWE. Herein, we synthesize alumina-based composite membranes with Y2O3-added and polyethylene glycol coupling agent functionalized Al2O3 for AWE through a phase inversion method. The porous composite membrane exhibits excellent hydrophilicity, with a lower contact angle of approximately 55 degrees. It also presents exceptional performance metrics, including a low area resistance of about 0.17 Omega cm(2), an ultrahigh BBP of approximately 4.4 bar, and excellent mechanical properties with a tensile strength of around 25 MPa. The membranes achieved a current density of up to 2.5 A cm(-2) under 2.0 V voltage in a 30 wt% KOH solution at 80 degrees C by utilizing commercial catalysts. Notably, the composite membranes exhibited remarkable stability, maintaining operation for over 1200 h at a 2.0 A cm(-2) current density without any performance degradation at 80 degrees C. Furthermore, this composite membrane possesses outstanding gas-barrier capability with H-2 and O-2 purity higher than 98.70 % and 99.69 %, respectively. The above results demonstrate that the prepared novel high-performance alumina-based composite membrane for hydrogen generation has significant potential for applications within the AWE process.

Keyword :

Alkaline water electrolysis Alkaline water electrolysis Composite membrane Composite membrane Functionalized alumina Functionalized alumina High current density High current density Hydrophilicity Hydrophilicity

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GB/T 7714 Lu, Jinyu , You, Jian , Chang, Ben et al. Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 725 .
MLA Lu, Jinyu et al. "Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis" . | JOURNAL OF MEMBRANE SCIENCE 725 (2025) .
APA Lu, Jinyu , You, Jian , Chang, Ben , Wang, Wei , Li, Yongzhao , Lin, Jiabin et al. Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 725 .
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Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis EI
期刊论文 | 2025 , 725 | Journal of Membrane Science
Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis Scopus
期刊论文 | 2025 , 725 | Journal of Membrane Science
Facile preparation of highly hydrophobic ZIF-8/DMBIM modified epoxy coatings with enhanced acid, alkali and marine corrosion resistance SCIE
期刊论文 | 2025 , 43 | MATERIALS TODAY CHEMISTRY
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Abstract :

ZIF-8 is considered as a promising functional material in anti-corrosion coating applications. However, ZIF-8 hydrolyzes easily, especially in acidic and salty media, due to its unstable Zn-N coordination bonding and hydrophilic crystal surface, which reduces anti-corrosion durability of the coatings. In this study, highly hydrophobic modification of ZIF-8 particles was performed through simple surface ligand exchange with 5,6dimethylbenzimidazole (DMBIM). The as-prepared ZIF-8/DMBIM particles showed high water-repellency and enhanced chemical stability in acidic, neutral, and alkaline media, and excellent compatibility and barrier function in epoxy coatings. As a consequence, ZIF-8/DMBIM modified epoxy coatings showed significantly enhanced corrosion resistances in acid, alkali and salt aqueous solutions with pH 3.0-11.0. Electrochemical impedance spectroscopy tests demonstrated that, after 20 days of immersion in 3.5 wt% NaCl solution at all the studied pH, the |Z|0.01 Hz values of ZIF-8/DMBIM modified epoxy coatings were approximately two orders of magnitude higher than of the original epoxy coatings. This work provides an idea for the development and application of ZIF materials in more fields, and innovative anti-corrosion coatings based on functional modification of materials.

Keyword :

Corrosion resistance Corrosion resistance Epoxy coatings Epoxy coatings Hydrophobic modification Hydrophobic modification Surface ligand exchange Surface ligand exchange ZIF-8 ZIF-8

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GB/T 7714 Chen, Huaiyin , Wang, Zhonghe , Li, Jun et al. Facile preparation of highly hydrophobic ZIF-8/DMBIM modified epoxy coatings with enhanced acid, alkali and marine corrosion resistance [J]. | MATERIALS TODAY CHEMISTRY , 2025 , 43 .
MLA Chen, Huaiyin et al. "Facile preparation of highly hydrophobic ZIF-8/DMBIM modified epoxy coatings with enhanced acid, alkali and marine corrosion resistance" . | MATERIALS TODAY CHEMISTRY 43 (2025) .
APA Chen, Huaiyin , Wang, Zhonghe , Li, Jun , Liu, Xiaolin , Li, Congxiang , Li, Yongzhao et al. Facile preparation of highly hydrophobic ZIF-8/DMBIM modified epoxy coatings with enhanced acid, alkali and marine corrosion resistance . | MATERIALS TODAY CHEMISTRY , 2025 , 43 .
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Facile preparation of highly hydrophobic ZIF-8/DMBIM modified epoxy coatings with enhanced acid, alkali and marine corrosion resistance EI
期刊论文 | 2025 , 43 | Materials Today Chemistry
Facile preparation of highly hydrophobic ZIF-8/DMBIM modified epoxy coatings with enhanced acid, alkali and marine corrosion resistance Scopus
期刊论文 | 2025 , 43 | Materials Today Chemistry
PPS Gradient Filter Material with High Efficiency and Excellent Dust Removal Capacity for Industrial Flue Gas Treatment by Integrating Numerical Modeling and Melt-Blown-Lamination Technology SCIE
期刊论文 | 2025 , 59 (21) , 10368-10379 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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Abstract :

The filter material is the key to controlling flue gas pollution with bag filter technology. Surface treatment of filter media using the PTFE membrane can improve its filtration performance. Badly, the reprocessing of used filter media has become a major challenge due to the ecological impact and potential human toxicity of PTFE. Herein, a novel PPS-based gradient filtration material (mPPS-25/NF-5) with high efficiency, low resistance, and controllability was prepared by combining numerical simulation, high-temperature melt-blown process, and lamination technology with PPS micronano-embedded fiber membranes (mPPS) as the surface layer structure. Benefiting from the three-dimensional porous network structure formed by the staggered arrangement of fibers in mPPS and the effective prediction and optimization of the structural performance of the designed filter media in advance, mPPS-25/NF-5 demonstrated superior filtration performance. Specifically, compared with commercial PTFE membrane lamination filter media, the average cleaning cycle of mPPS-25/NF-5 has been improved by 188.13 s, while the average residual resistance has been reduced by 41.84 Pa, which truly realizes a high efficiency, low resistance, and long service life. This work may offer fresh insight into new materials and their rapid and controllable production methods for flue gas purification under "ultralow emission" measures.

Keyword :

bag filter bag filter cleaning performance cleaning performance gas pollution gas pollution gradient filtration material gradient filtration material numerical simulation numerical simulation PPS micronano-embedded fiber membrane PPS micronano-embedded fiber membrane PTFE microporousmembrane PTFE microporousmembrane

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GB/T 7714 You, Jian , Zhang, Hongxiang , Li, Yongzhao et al. PPS Gradient Filter Material with High Efficiency and Excellent Dust Removal Capacity for Industrial Flue Gas Treatment by Integrating Numerical Modeling and Melt-Blown-Lamination Technology [J]. | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2025 , 59 (21) : 10368-10379 .
MLA You, Jian et al. "PPS Gradient Filter Material with High Efficiency and Excellent Dust Removal Capacity for Industrial Flue Gas Treatment by Integrating Numerical Modeling and Melt-Blown-Lamination Technology" . | ENVIRONMENTAL SCIENCE & TECHNOLOGY 59 . 21 (2025) : 10368-10379 .
APA You, Jian , Zhang, Hongxiang , Li, Yongzhao , Wang, Wei , Liu, Longmin , Chen, Huaiyin et al. PPS Gradient Filter Material with High Efficiency and Excellent Dust Removal Capacity for Industrial Flue Gas Treatment by Integrating Numerical Modeling and Melt-Blown-Lamination Technology . | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2025 , 59 (21) , 10368-10379 .
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PPS Gradient Filter Material with High Efficiency and Excellent Dust Removal Capacity for Industrial Flue Gas Treatment by Integrating Numerical Modeling and Melt-Blown-Lamination Technology EI
期刊论文 | 2025 , 59 (21) , 10368-10379 | Environmental Science and Technology
PPS Gradient Filter Material with High Efficiency and Excellent Dust Removal Capacity for Industrial Flue Gas Treatment by Integrating Numerical Modeling and Melt-Blown-Lamination Technology Scopus
期刊论文 | 2025 , 59 (21) , 10368-10379 | Environmental Science and Technology
Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS SCIE
期刊论文 | 2024 , 487 | CHEMICAL ENGINEERING JOURNAL
WoS CC Cited Count: 5
Abstract&Keyword Cite Version(2)

Abstract :

In recent years, loading antioxidants onto inorganic nanoparticles has attracted increasing interest. However, the existing studies not only have low antioxidant loading efficiency, but also ignore the relationship between structural changes and antioxidant properties before and after antioxidant modification, greatly limiting the improvement of the antioxidant properties of composites and their application scope. In this work, we successfully prepared bis-hindered phenolic antioxidants containing silica hydroxyl groups (Bis-mAO) and loaded them onto silicon dioxide (SiO 2 ) to get the nanocomposites (Bis-mAO-SiO 2 ). The melt blending method further prepared the corresponding polyphenylene sulfide (PPS)/Bis-mAO-SiO 2 composites. The results showed that the higher antioxidant loading and more suitable antioxidant structure made Bis-mAO-SiO 2 possess excellent antioxidant properties. The prepared PPS/Bis-mAO-SiO 2 composites remained stable under high temperatures and oxygen environments. Impressively, the maximum weight loss rate temperature of PPS/Bis-mAO-SiO 2 was increased by 11.60 degrees C compared to that of PPS, and after accelerated thermal oxidation at 220 degrees C for 24 h, the relative intensity ratio between O and C of PPS/Bis-mAO-SiO 2 only increased to 0.086, much lower than 0.132 for PPS. Moreover, the viscosity of PPS/Bis-mAO-SiO 2 only increased by 29.05 % and 88.75 % after accelerated thermal oxidation at 220 degrees C for 12, 24 h. Compared, PPS ' s viscosity increased substantially by 79.22 % and 250.3 %, respectively. This meant that the Bis-mAO-SiO 2 successfully achieved a synergistic integration of high antioxidant properties and thermal stability, implying that the work offered a strategy for fabricating hightemperature resistant antioxidant composites.

Keyword :

Hindered phenolic Hindered phenolic Polyphenylene sulfide Polyphenylene sulfide Rheological properties Rheological properties Silicon dioxide Silicon dioxide Thermal oxidation stability Thermal oxidation stability

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GB/T 7714 Cai, Weilong , You, Jian , Wang, Wei et al. Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 .
MLA Cai, Weilong et al. "Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS" . | CHEMICAL ENGINEERING JOURNAL 487 (2024) .
APA Cai, Weilong , You, Jian , Wang, Wei , Chen, Huaiyin , Liu, Longmin , Ma, Yuhan et al. Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS . | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 .
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Double-hindered phenolic SiO2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS Scopus
期刊论文 | 2024 , 487 | Chemical Engineering Journal
Double-hindered phenolic SiO2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS EI
期刊论文 | 2024 , 487 | Chemical Engineering Journal
Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration SCIE
期刊论文 | 2024 , 338 | SEPARATION AND PURIFICATION TECHNOLOGY
WoS CC Cited Count: 5
Abstract&Keyword Cite Version(1)

Abstract :

Organic solvent nanofiltration (OSN) is a green, energy-saving, and highly efficient emerging membrane separation technology, and there is an urgent need for robust, easy-to-process OSN membranes with high permeance and small solute selectivity for industrial applications. Herein, we propose a new strategy for accurately designing novel OSN membranes. Specifically, a polyamide (PA) interlayer was synthesized in-situ on the surface of homogeneous reinforced poly(p-phenylene terephthamide) (PPTA) hollow fiber membrane by interfacial polymerization (IP) using both ultra-low concentrations piperazine (PIP, 0.05 wt%) and trimesoyl chloride (TMC, 0.005 wt%), and then a defect-free and dense PPy layer was deposited on top of the hydrophilic PA interlayer by chemical vapor deposition (CVD) process to prepare PA/PPy composite membranes with spherical cluster or strip cluster "Turing-like" structure. The resulting PA/PPy composite membranes presented an excellent high selective permeability, the dimethylacetamide (DMAc) permeability was 21.1 Lm(-2)h(-1)MPa-1, and the molecular weight cut-off (MWCO) was as low as 185 Da. A 30-hour OSN test at elevated temperatures (80 degrees C) and in organic solvent (DMAc), as well as a one-month immersion test in ethanol and DMAc at room temperature, demonstrated superior separation performance and structural stability of the membranes, indicating their application potential in harsh solvent systems. Our novel method for developing nanoscale ordered structured PA/PPy composite membranes offers great potential for the development of multilevel structural designs in the preparation of high-performance OSN membranes with potential industrial applications.

Keyword :

Chemical vapor deposition Chemical vapor deposition Hollow fiber Hollow fiber Interfacial polymerization Interfacial polymerization Interlayer Interlayer Organic solvent nanofiltration Organic solvent nanofiltration Poly(p-phenylene terephthamide) Poly(p-phenylene terephthamide)

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GB/T 7714 Lai, Xing , Wang, Chun , Chen, Huaiyin et al. Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 338 .
MLA Lai, Xing et al. "Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration" . | SEPARATION AND PURIFICATION TECHNOLOGY 338 (2024) .
APA Lai, Xing , Wang, Chun , Chen, Huaiyin , Zhu, Tianxue , Huang, Jianying , Xiao, Changfa et al. Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 338 .
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Controllable preparation of novel homogenous reinforcement poly(p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration Scopus
期刊论文 | 2024 , 338 | Separation and Purification Technology
Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition SCIE
期刊论文 | 2024 , 28 (1) | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
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Abstract :

Dinitroaromatics are valuable organic compounds. However, the high value of these compounds is accompanied by significant risks and formidable challenges. Herein, we report a safe and highly efficient method for the dinitration of various aromatic compounds, using KNO3 as nitrating agent, polyphosphoric acid as solvent and catalyst. This approach provides a safer and more efficient alternative to the traditional mixed acid system, making it suitable for a range of substrates, especially highly deactivated arenes.

Keyword :

Dinitration Dinitration Dinitroaromatics Dinitroaromatics KNO3 KNO3 PPA PPA

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GB/T 7714 Jia, Yixiong , Wen, Bin , Nan, Peiran et al. Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition [J]. | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY , 2024 , 28 (1) .
MLA Jia, Yixiong et al. "Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition" . | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY 28 . 1 (2024) .
APA Jia, Yixiong , Wen, Bin , Nan, Peiran , Chen, Huaiyin , Chen, Xingquan , Li, Shiyun . Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition . | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY , 2024 , 28 (1) .
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Polyphosphoric Acid Catalyzed C−H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition Scopus
期刊论文 | 2024 , 28 (1) | European Journal of Organic Chemistry
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