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学者姓名:蔡静宇
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Ultrahigh-resolution polymer materials with good thermal stability and high interface contrast have a wide range of application prospects in photolithography and nanomanufacturing processes. Here, we report a series of comb-like homopolymers based on polystyrene sulfonate imidazolium salts (PSSM-(i)imi), achieving efficient self-assembly under solvent-free conditions and obtaining sub-3 nm hexagonally packed cylinders and sub-4 nm lamellar nanopatterns with high interface contrast. The sulfonic acid groups in the main chain of the homopolymers are connected to imidazole groups containing hydrophobic alkyl side chains through acid-base mixed electrostatic interactions. The electrostatic interactions enhance the incompatibility between the two functional groups, while the alkyl side chain can precisely control the domain spacing and nanostructure of the pattern, regardless of their molecular weight. Through the effect of temperature fields, the thermal stability and spatial orientation of the homopolymer nanostructures were further studied, promoting the practical application of nanopatterned materials.
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GB/T 7714 | Weng, Sen , Lu, Zhen , Cai, Jingyu et al. Ultrahigh-resolution, high interface contrast ionic homopolymers induced by acid-base mixed electrostatic interactions and nanopattern evolution [J]. | POLYMER CHEMISTRY , 2025 , 16 (21) : 2506-2513 . |
MLA | Weng, Sen et al. "Ultrahigh-resolution, high interface contrast ionic homopolymers induced by acid-base mixed electrostatic interactions and nanopattern evolution" . | POLYMER CHEMISTRY 16 . 21 (2025) : 2506-2513 . |
APA | Weng, Sen , Lu, Zhen , Cai, Jingyu , Xiao, Longqiang , Wang, Kairui , Zhao, Rui et al. Ultrahigh-resolution, high interface contrast ionic homopolymers induced by acid-base mixed electrostatic interactions and nanopattern evolution . | POLYMER CHEMISTRY , 2025 , 16 (21) , 2506-2513 . |
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Oil/water separation of emulsion stands as one of the most arduous and challenging aspects in oily wastewater treatment which represents a perennial trouble for humanity. Herein, positively charged hydrophobic polymer foams (PCHPFs) were fabricated by water-in-oil (W/O) high internal phase emulsion (HIPE) polymerization followed by quaternization, employing 4-vinylbenzyl chloride (VBC) and 4-tert-butylstyrene (tBS) as the comonomers. The quaternization degree of PCHPFs which can be adjusted by varying the VBC/tBS ratio has an important influence on the emulsion separation performance based on the charge demulsification mechanism. The porous morphologies of PCHPFs were revealed by SEM. The successful fabrication of PCHPFs was confirmed by FTIR and XPS. As VBC/tBS ratio increased from 0.5:1-5:1, the emulsion separation efficiency of PCHPFs first increased to a maximum of 95.9 % at 2:1 and then decreased. Additionally, the PCHPFs demonstrated robust hydrophobicity (water contact angles > 143 degrees), exceptional oil-water selectivity, remarkable oil-water separation capability, coupled with a certain absorption capacity for various oils and organic solvents (5-14 g/g). Given these advantages, PCHPFs are anticipated to emerge as an ideal solution for emulsion separation. Most importantly, the methodology for generating PCHPFs via quaternization in this research offers an innovative avenue in the design of charge demulsification materials.
Keyword :
Charge demulsification Charge demulsification Emulsion separation Emulsion separation High internal phase emulsion High internal phase emulsion Positively charged hydrophobic polymer foams Positively charged hydrophobic polymer foams Quaternization Quaternization
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GB/T 7714 | Xue, Jiahao , Zhao, Yulai , Cai, Jingyu et al. Positively charged hydrophobic polymer foams via high internal phase emulsion polymerization followed by quaternization for effective oil-in-water emulsion separation [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2025 , 13 (2) . |
MLA | Xue, Jiahao et al. "Positively charged hydrophobic polymer foams via high internal phase emulsion polymerization followed by quaternization for effective oil-in-water emulsion separation" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 13 . 2 (2025) . |
APA | Xue, Jiahao , Zhao, Yulai , Cai, Jingyu , Lu, Zhen , Xiao, Longqiang , Hou, Linxi . Positively charged hydrophobic polymer foams via high internal phase emulsion polymerization followed by quaternization for effective oil-in-water emulsion separation . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2025 , 13 (2) . |
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The natural porosity architectures, polar functional groups, low density, and biocompatibility of biomass carbon materials make them highly promising for the development of lightweight electromagnetic microwave absorbers. Sugarcane bagasse served as the raw material for this investigation, and sugarcane bagasse-derived carbon/FexOy was prepared using the in-situ growth method and temperature field-directed casting. By adjusting the content of ferrite hollow spheres, magnetic conduction losses and heterogeneous interfacial polarization losses are improved. Controlling the electrical conductivity losses and multiple scattering structures of biomass-derived carbon at different annealing temperatures, impedance matching is achieved through the synergistic operation of various loss mechanisms. BDC@C-1.2-750 exhibited a minimum reflection loss (RLmin) of-46.6 dB at a filler content of only 5 wt% and a thickness of 1.9 mm and obtained a maximum effective absorption bandwidth (EABmax) of 5.52 GHz at the same thickness. The ice template directional casting formed an orderly thermal conduction path, providing channels for phonon and electron transport, which is beneficial for the efficient heat dissipation of the microwave absorber. This finding thus offers a promising technique for creating ultra-lightweight microwave absorbers that facilitate heat dissipation.
Keyword :
Biomass carbon Biomass carbon Biomass-derived porous carbon Biomass-derived porous carbon Electromagnetic wave absorption Electromagnetic wave absorption Freeze casting Freeze casting Light weight Light weight
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GB/T 7714 | Zhou, Ting , Xu, Jing , Zhao, Hao et al. FexOy-decorated biomass-derived carbon: A lightweight electromagnetic wave absorber and thermal conductor [J]. | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2025 , 717 . |
MLA | Zhou, Ting et al. "FexOy-decorated biomass-derived carbon: A lightweight electromagnetic wave absorber and thermal conductor" . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 717 (2025) . |
APA | Zhou, Ting , Xu, Jing , Zhao, Hao , Zhang, Chunni , Wei, Yifeng , Yin, Xiangyu et al. FexOy-decorated biomass-derived carbon: A lightweight electromagnetic wave absorber and thermal conductor . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2025 , 717 . |
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The development of dual-functional composite materials that integrate efficient electromagnetic wave (EMW) absorption and thermal conductivity is a crucial advancement in addressing the issues of electromagnetic pollution and heat accumulation in electronic devices. In this work, NixCoy-C/PAM hydrogels derived from mixed metal MOF-74 were successfully fabricated by in situ radical polymerization with the assistance of an external magnetic field. The properties of NixCoy-C/PAM were optimized by varying the ratios of cobalt and nickel metals as well as their oxides, thereby providing opportunities for the creation of advanced electromagnetic wave absorbers. When the Ni/Co ratio was increased to 1:1, Ni1Co1-C/PAM demonstrated superior EMW absorption performance at a filler ratio of 3 wt%. This configuration exhibited a minimum reflection loss of -57.8 dB at 8.64 GHz with a thickness of 3.6 mm, alongside an effective absorption bandwidth extending up to 5.81 GHz with a thickness of 2.3 mm. Furthermore, magnetic orientation within the filler facilitated enhanced heat transfer by establishing high-efficiency thermal conductive pathways. This study offers valuable insights into designing polymer composites characterized by improved thermal conductivity and robust EMW absorption capabilities.
Keyword :
Directional orientation Directional orientation Electromagnetic wave absorption Electromagnetic wave absorption MOFs derivatives MOFs derivatives Multifunctional composites Multifunctional composites Polyacrylamide Polyacrylamide
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GB/T 7714 | Zhang, Chunni , Zhao, Hao , Zhou, Ting et al. NixCoy-C/polyacrylamide hydrogels derived from mixed metal MOF-74 for synergistically enhanced electromagnetic wave absorption and thermal conduction performances [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 505 . |
MLA | Zhang, Chunni et al. "NixCoy-C/polyacrylamide hydrogels derived from mixed metal MOF-74 for synergistically enhanced electromagnetic wave absorption and thermal conduction performances" . | CHEMICAL ENGINEERING JOURNAL 505 (2025) . |
APA | Zhang, Chunni , Zhao, Hao , Zhou, Ting , Guo, Baishan , Huang, Shinan , Cai, Jingyu et al. NixCoy-C/polyacrylamide hydrogels derived from mixed metal MOF-74 for synergistically enhanced electromagnetic wave absorption and thermal conduction performances . | CHEMICAL ENGINEERING JOURNAL , 2025 , 505 . |
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Electronic grade hydrogen peroxide plays a crucial role in the fabrication of large-scale integrated circuits. However, hydrogen peroxide prepared by the anthraquinone method contains impurities such as lead ions (Pb2+) and phosphate, which can seriously affect the yield of the circuit. Traditional adsorbent materials have difficulty in solving the problem of simultaneous adsorption of trace anions and cations in hydrogen peroxide due to the single adsorption site and poor adsorption kinetics. In this study, UiO-66-NH2 was prepared by introducing a -NH2 group on the terephthalic acid ligand, and a series of hybrid matrix hollow fiber membranes with different UiO-66-NH2 contents were prepared by loading it on polysulfone (PSF). This initiative not only improved the pore size and water flux of hollow fiber membranes but also enhanced the removal efficiency of ions from hydrogen peroxide solution, thereby facilitating practical application. Among them, UiO-66-NH2@PSF-1.5 showed the best adsorption of phosphate and lead ions with adsorption capacities of 3.099 and 2.160 mg g(-1) and reached the removal efficiency of 67.1 and 60.1%, which fully confirms the practicability in the purification of electronic chemicals. This work innovatively proposes that UiO-66-NH2@PSF hybrid matrix hollow fiber membranes have great potential as simultaneous adsorbents for cations and anions in the efficient purification of electronic grade solvents.
Keyword :
anion andcation coadsorption anion andcation coadsorption hollowfiber membrane hollowfiber membrane hydrogen peroxide purification hydrogen peroxide purification polysulfone polysulfone UiO-66-NH2 (Zr) UiO-66-NH2 (Zr)
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GB/T 7714 | Miao, Xiaoyu , Zhang, Jian , Shi, Junjie et al. Synthesis of UiO-66-NH2@PSF Hollow Fiber Membrane with Enhanced Simultaneous Adsorption of Pb2+ and Phosphate for Hydrogen Peroxide Purification [J]. | ACS APPLIED MATERIALS & INTERFACES , 2025 , 17 (5) : 8537-8549 . |
MLA | Miao, Xiaoyu et al. "Synthesis of UiO-66-NH2@PSF Hollow Fiber Membrane with Enhanced Simultaneous Adsorption of Pb2+ and Phosphate for Hydrogen Peroxide Purification" . | ACS APPLIED MATERIALS & INTERFACES 17 . 5 (2025) : 8537-8549 . |
APA | Miao, Xiaoyu , Zhang, Jian , Shi, Junjie , Cai, Jingyu , Liu, Dan , Hou, Linxi . Synthesis of UiO-66-NH2@PSF Hollow Fiber Membrane with Enhanced Simultaneous Adsorption of Pb2+ and Phosphate for Hydrogen Peroxide Purification . | ACS APPLIED MATERIALS & INTERFACES , 2025 , 17 (5) , 8537-8549 . |
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The development of modern electronic devices necessitates the creation of materials that exhibit both excellent thermal conductivity and high electromagnetic wave absorption performance. This study focuses on the synthesis of a dual-functional composite material, Co-C@PDA@BN, by incorporating boron nitride (BN) onto a metal-organic framework (MOF)-derived Co-C core through the strong adhesion properties of polydopamine (PDA). The heterogeneous structural interface enhances interfacial polarization, thereby optimizing wave absorption. The thermal conductivity can be improved by adjusting the ratio of Co-C to BN. A composite with a Co-C to BN ratio of 1 : 5 shows a minimum reflection loss of -55.3 dB at 5 wt% and a thermal conductivity of 0.396 W m-1 K-1, while a ratio of 1 : 20 achieves a thermal conductivity value of 0.464 W m-1 K-1 with a minimum reflection loss of -44.9 dB, demonstrating the facile tunability of these two properties. This work provides a promising pathway via heterostructure design to balance thermal conductivity and wave absorption characteristics, which may offer guidance for advancing electronic device technology.
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GB/T 7714 | Chen, Feng , Zhao, Hao , Xiao, Longqiang et al. Hierarchical Co-C@PDA@BN/PAM composites: synergistic enhancement of microwave absorption and thermal conductivity through heterostructure design [J]. | JOURNAL OF MATERIALS CHEMISTRY C , 2025 , 13 (24) : 12407-12419 . |
MLA | Chen, Feng et al. "Hierarchical Co-C@PDA@BN/PAM composites: synergistic enhancement of microwave absorption and thermal conductivity through heterostructure design" . | JOURNAL OF MATERIALS CHEMISTRY C 13 . 24 (2025) : 12407-12419 . |
APA | Chen, Feng , Zhao, Hao , Xiao, Longqiang , Yin, Xiangyu , Zhao, Yulai , Lu, Zhen et al. Hierarchical Co-C@PDA@BN/PAM composites: synergistic enhancement of microwave absorption and thermal conductivity through heterostructure design . | JOURNAL OF MATERIALS CHEMISTRY C , 2025 , 13 (24) , 12407-12419 . |
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Herein, we present the synthesis and characterization of a novel phosphorus-containing epoxy co-curing agent, ANVD, fabricated via a one-pot method utilizing vanillin, 1,5-diaminonaphthalene, and DOPO as raw materials. Structural analysis conducted through FTIR and NMR spectroscopy confirmed the composition of ANVD. Differential scanning calorimetry (DSC) results indicated ANVD has significant contribution to the curing crosslinking of DGEBA, resulting in a slightly decreased Tg value for EP/ANVD compared to EP/DOPO, albeit still notably higher. Thermogravimetric analysis (TGA) revealed a reduction in the T5% and Tmax values of EP/ANVD, yet ANVD's superior char-forming ability increased char residue mass at elevated temperatures. Combustion tests showcased the outstanding flame retardancy of EP/ANVD, with EP/ANVD-5 exhibiting a limiting oxygen index (LOI) value of 33.2 % and achieving a V-0 rating in the UL-94 test. Furthermore, EP/ANVD-5 displayed a notable decrease of 38.6 % and 32.1 % in pHRR and av-HRR, respectively, compared to pure EP, surpassing EP/DOPO with equivalent phosphorus content. Analysis of decomposition products in both condensed and gas phases revealed ANVD's role in forming dense and continuous expanded char layers during combustion, releasing phosphorus radicals and non-combustible gases, thus exhibiting dual-phase flame retardant effects. Additionally, EP/ANVD-3 exhibited enhanced mechanical properties, with tensile strength and modulus increasing from 68.5 MPa and 0.75 GPa to 76.5 MPa and 0.86 GPa, respectively, compared to pure EP. Overall, the introduction of the bio-based flame retardant ANVD presents promising opportunities for the utilization of bio-based materials in flame retardancy applications.
Keyword :
Co-curing agent Co-curing agent Epoxy resin Epoxy resin Flame retardancy Flame retardancy Phosphaphenanthrene Phosphaphenanthrene Vanillin Vanillin
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GB/T 7714 | Luo, Yang , Huang, Lewen , Cai, Jingyu et al. Vanillin-derived co-curing agent for enhanced flame retardancy and mechanical properties in epoxy resin [J]. | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY , 2025 , 143 : 691-703 . |
MLA | Luo, Yang et al. "Vanillin-derived co-curing agent for enhanced flame retardancy and mechanical properties in epoxy resin" . | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY 143 (2025) : 691-703 . |
APA | Luo, Yang , Huang, Lewen , Cai, Jingyu , Jiang, Qing , Liao, Xiafeng , Zhang, Haowen et al. Vanillin-derived co-curing agent for enhanced flame retardancy and mechanical properties in epoxy resin . | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY , 2025 , 143 , 691-703 . |
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Microwave absorption and thermal conductivity compatibility are difficult to achieve because of the inevitable significant electromagnetic interference, heat buildup, and impedance mismatch and decreased heat transfer efficiency caused by the lightweighting and integration of electronic equipment. In this research, a polyacrylamide (PAM)-based bifunctional organogel with both microwave absorption and thermal conductivity was created by employing Co-MOF-74 derivatives as basic fillers and increasing interfacial polarization and conduction loss with the addition of MWCNT. The inclusion of MWCNT improved the conductive loss, and the loading of MWCNT with MOF derivatives extended the heterogeneous interface, resulting in the homogeneous distribution of magnetic nanoparticles and the formation of a magnetic coupling network, which increases magnetic loss capacity. The Co/C-MWCNT@PDA/PAM gel has a packing of 10 wt% in the frequency range of 2-18 GHz and an RLmin of -59.3 dB at a matched thickness of 2 mm. In addition, the magnetic orientation on MOF derivatives aligned the fillers in the polymer matrix to produce high-efficiency thermal conductive pathways. The potential of MOF derivatives and polymers as bifunctional gels for thermal conductivity and electromagnetic wave absorption is highlighted in this work.
Keyword :
Electromagnetic wave absorption Electromagnetic wave absorption Metal-organic framework derivative Metal-organic framework derivative Multi-walled carbon nanotube Multi-walled carbon nanotube Polyacrylamide Polyacrylamide Thermal management Thermal management
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GB/T 7714 | Xie, Zhuohang , Zhao, Hao , Chen, Feng et al. Magnetically aligned Co-C/MWCNT/polyacrylamide with directional thermal conduction for enhanced electromagnetic wave absorption by synergistic engineering of dielectric and magnetic loss [J]. | DIAMOND AND RELATED MATERIALS , 2025 , 157 . |
MLA | Xie, Zhuohang et al. "Magnetically aligned Co-C/MWCNT/polyacrylamide with directional thermal conduction for enhanced electromagnetic wave absorption by synergistic engineering of dielectric and magnetic loss" . | DIAMOND AND RELATED MATERIALS 157 (2025) . |
APA | Xie, Zhuohang , Zhao, Hao , Chen, Feng , Zhang, Chunni , Xiao, Longqiang , Cai, Jingyu et al. Magnetically aligned Co-C/MWCNT/polyacrylamide with directional thermal conduction for enhanced electromagnetic wave absorption by synergistic engineering of dielectric and magnetic loss . | DIAMOND AND RELATED MATERIALS , 2025 , 157 . |
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The improper disposal of waste high purity acetonitrile (HPA) not only causes environmental degradation but also poses significant risks to human health. One of the major challenges in the recycling and reuse of waste HPA is the removal of trace metal ions. In this study, we successfully fabricated a chitin/ZIF-67 composite hydrogel (CZ-n) by one pot in situ synthesis method for the purification and recovery of waste HPA for the first time. ZIF67 was embedded into chitin through hydrogen bonding and coordination and provided more active adsorption sites, which resulted in CZ-3 with higher adsorption capacity than CZ-0. The maximum adsorption capacities of CZ-3 for Zn2+ and Ag+, as determined by fitting the Langmuir model, were 85.46 mg & sdot;g-1 and 91.26 mg & sdot;g-1, respectively. CZ-3 was able to effectively decrease the metal ion (Zn2+ and Ag+) concentration to below 10 ppb within 24 h through a monolayer adsorption process using chelation. Furthermore, the adsorption capacity remained satisfactory even in the presence of an equivalent concentration of NaCl, and CZ-3 exhibited remarkable reusability, with a removal rate exceeding 80 % after five cycles. Additionally, it also displayed notable biodegradability, with complete degradation observed within 60 days. These results indicated that CZ-3 could be a potential absorbent in the purification and recovery of waste HPA.
Keyword :
Adsorption Adsorption Chitin hydrogel Chitin hydrogel High-purity acetonitrile High-purity acetonitrile Trace metal ions Trace metal ions ZIF-67 ZIF-67
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GB/T 7714 | Wang, Sen , Cai, Jingyu , Shi, Junjie et al. In situ synthesis of Chitin/ZIF-67 composite hydrogel for efficient recovery of high purity acetonitrile by removal of Zn2+and Ag+ [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 499 . |
MLA | Wang, Sen et al. "In situ synthesis of Chitin/ZIF-67 composite hydrogel for efficient recovery of high purity acetonitrile by removal of Zn2+and Ag+" . | CHEMICAL ENGINEERING JOURNAL 499 (2024) . |
APA | Wang, Sen , Cai, Jingyu , Shi, Junjie , Shao, Xiang , Cai, Liqin , Hou, Linxi . In situ synthesis of Chitin/ZIF-67 composite hydrogel for efficient recovery of high purity acetonitrile by removal of Zn2+and Ag+ . | CHEMICAL ENGINEERING JOURNAL , 2024 , 499 . |
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Composite material g-C3N4/WO3•H2O (CNW-1) was synthesized by hydrothermal reaction from graphite phase carbon nitride (g-C3N4) and sodium tungstate dihydrate. The composite material obtained was then characterized by XRD, XPS, SEM and TEM, and its visible light catalytic CO2 reduction performance at 298 K and 0.1 MPa was evaluated, the possible reaction mechanism was proposed. It was found that the yield of CO and CH4 could be regulated by adjusting the crystal water content in tungsten trioxide. CNW-1 had the highest yield of CH4 (0.33 μmol/g), while g-C3N4/WO3 (CNW) had the highest CO yield (0.67 μmol/g) after 10 h of reaction. This study provides an effective strategy for the selective reduction of CO2 to C1 compounds, and highlights the potential application of Z-scheme photocatalytic systems constructed from g-C3N4 semiconductor in the field of catalysis. © 2024 Fine Chemicals. All rights reserved.
Keyword :
Carbon dioxide Carbon dioxide Carbon nitride Carbon nitride Catalysis Catalysis Composite materials Composite materials Graphite Graphite Tungsten compounds Tungsten compounds
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GB/T 7714 | Zhang, Jian , Weng, Sen , Shi, Junjie et al. Preparation and photocatalytic CO2 reduction performance of Z-scheme g-C3N4/WO3•H2O [J]. | Fine Chemicals , 2024 , 41 (4) : 858-864 and 871 . |
MLA | Zhang, Jian et al. "Preparation and photocatalytic CO2 reduction performance of Z-scheme g-C3N4/WO3•H2O" . | Fine Chemicals 41 . 4 (2024) : 858-864 and 871 . |
APA | Zhang, Jian , Weng, Sen , Shi, Junjie , Cai, Jingyu , Xiao, Longqiang . Preparation and photocatalytic CO2 reduction performance of Z-scheme g-C3N4/WO3•H2O . | Fine Chemicals , 2024 , 41 (4) , 858-864 and 871 . |
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