JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Shaojin Jia,Sha Yang,Yu Pan,Salah Ud Din,Yuanjie Cai
As an important part of the fields such as renewable energy and electric vehicles, electrochemical energy storage technology faces significant challenges in improving energy density , extending battery life and improving safety. We successfully prepared a composite battery separator of polyvinylidene fluoride-chlorotrifluorinylene (PVDF-CTFE) and fluorinated polyimide (F-PI) -based materials, mixed it with different contents of boehmite nanoparticles , and then modified it by different doses of electron beam irradiation to improve the performance, especially to overcome the problem of maintaining capacity decline in high-speed charging environment. The results showed that the prepared battery separators exhibited outstanding thermal stability, electrochemical properties and ionic conductivity with 12 % boehmite nanoparticles . After 1000 high-speed charge and discharge cycles in current density of 10C, the battery based on the modified separator still maintained a capacity retention rate of 84.4 %, with the initial discharge specific capacity of 111.9 mAhg −1 . This means that irradiated separators not only maintain a high energy density in a high-speed charging environment, but also overcome the problem of maintaining capacity decline. Electron beam irradiation further improved the comprehensive performance of the separator. After 1000 and 1500 cycles at the current density of 10C and 15C, the specific discharge capacity of the battery can still retain more than 90 % and 80 % of the initial specific discharge capacity, which provides a longer life in practical applications.
研究领域:
材料科学
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电化学储能技术
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2025
·Vol. 40
·期 6
·1739-1749
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IF 1.1
Zeng Fanbiao,Liu Zhanwei,Yan Hengwei,Li Lan,Li Mengnan,Hu Mingyi
To efficiently address the current high cost associated with preparing pseudo-boehmite from organic aluminum, a low-cost alternative, AlCl 3 , is employed as the raw material. The sol-gel method is utilized, and H 2 O 2 is incorporated for the modification of pseudo-boehmite. The modification mechanism is thoroughly investigated through the use of X-ray powder diffractometer, scanning electron microscope, and BET data analysis, as well as molecular dynamics simulations. Under specific conditions (temperature at 80 °C, pH=7, and H 2 O 2 volume ratios of 0.5:1, 1:1, and 2:1), mesoporous pseudo-boehmite is synthesized with a specific surface area of 227 m 2 /g, a pore volume of 0.281 cm 3 /g, a pore size of 6.78 nm, and a peptizing index of 99.47%. A novel and innovative methodology for the cost-effective production of high-performance alumina is offered through the approach.
研究领域:
材料科学
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化学工程
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纳米技术
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计算化学
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Jinquan Wen,Guihua Liu,Tiangui Qi,Nianzi Liu,Qiusheng Zhou,Jian Guo,Leiting Shen,Yilin Wang
The properties of starting aluminum hydroxide powder greatly determine the sintering activity and microstructure of final alumina ceramic. Combing the modified properties of industrial gibbsite and boehmite, binary alumina ceramics with high mechanical property were fabricated under ambient pressure without any additives. The enhanced sintering activity of binary alumina compacts is attributed to the high tetrahedral aluminum content stemmed from gibbsite due to pseudomorphic transition. The low α-Al 2 O 3 content and high microstrain in boehmite-derived α-Al 2 O 3 also facilitate the densification of binary alumina compacts. In addition, the sintering mechanism shifted from boundary diffusion to the combination of boundary and volume diffusion with the introduction of boehmite-derived alumina, leading to accelerated atoms migration and significant reduction of activation energy from 426 kJ/mol to 289 kJ/mol. The resultant rapid densification at low temperature prevented excessive grain growth at the late sintering and resulted in remarkable grains refining. Benefited from the collective effect of binary alumina packing, accelerated sintering kinetics and grain refinement strengthening, full dense in binary alumina ceramics with a 99.8% relative density, 0.02% apparent porosity, 25.88 GPa Vickers hardness and 4.41 MPa·m 1/2 fracture toughness was achieved at 1650℃ for 2 h. This study presented a facile efficient strategy to preparing high-quality binary alumina ceramics, also highlighting the differences in aluminum hydroxide precursor on the performance of alumina-bearing materials.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Wenlin Liu,Chengxiong Dang,Weiquan Cai
Roxarsone (ROX) as a phenylarsenic feed additive, causes markedly threats to human health and water environment, and the key to treat it by adsorption method is to develop green large-scale preparation method of low-cost and efficient adsorbent. Herein, boehmite microspheres with superior ROX removal performance were efficiently synthesized on a large scale via a microwave-assisted green liquid phase precipitation (MP) method by regulating the carbon chain length of carboxylate ester precipitants. Especially, the ethyl acetate (EA) with short chain length results in hierarchical boehmite hollow microspheres (S-MP-EA) composed of three levels including crystalline grain at the nanoscale, hierarchical mesoscale packing of the nanoflakes centering around 3.8 nm and 10.5 nm, assembly of a self-supporting hollow microspheres driven by ionic conduction heating of microwave. Its fixed-bed dynamic adsorption for ROX with an initial concentration of 200 mg·L −1 showed that 5 g powder maintained its complete removal for the first 51 h, while the 10 g granulated adsorbent with diameters of 4.0 ± 0.1 mm achieved removal efficiency more than 90 % over 121 h suggesting its superior adsorption capability and long-term stability. Its synergistic adsorption mechanisms involving hydrogen bonding, electrostatic attraction and pore filling were significantly enhanced by microwave-enhanced hydroxyl density, positively charged distribution, hierarchical hollow structure and mesoporous structure. Combined with aluminum utilization efficiency of 95.50 % under precipitation conditions at 60 °C for only 30 min with environmental-friendly and easily obtainable raw materials, our work provides alternative functional aluminas with engineering applicability for highly efficient adsorption of organic arsenic wastewater.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2015
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IF 3.368
Xueming Liu,Chunge Niu,Xinping Zhen,Jide Wang,Xintai Su
A phase transfer method was developed to prepare boehmite (γ-AlOOH) nanostructures with various morphologies including nanofragments, nanorods , nanoflakes and multiply stacked nanostructures . The effect of the reaction temperature on the morphology of the as-prepared γ-AlOOH was investigated systematically. After calcination , the corresponding aluminum oxide (γ-Al 2 O 3 ) nanostructures were obtained from the as-prepared γ-AlOOH products and preserving the same morphology. The obtained samples were characterized by several techniques, such as X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and N 2 adsorption–desorption technique. The possible formation mechanism of the boehmites has also been proposed. Adsorption experiments indicated that γ-Al 2 O 3 nanorods exhibited better adsorption capacity for Congo red (CR) in contrast to other as-prepared γ-Al 2 O 3 nanostructures and commercial alumina (Al 2 O 3 ), and the adsorption obeyed well to Langmuir isotherm model. Besides, the adsorption kinetics followed pseudo-second-order rate equation .
研究领域:
材料科学
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环境科学
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高影响因子
Surfaces and Interfaces
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2023
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IF 6.2
Bo Wang,Xiaogang Liu,Xinrui Miao,Wenli Deng
A facile approach for fabricating multifunctional superhydrophobic coating was developed through a simple dip-coating process. The boehmite particles (BMPs) were adhered and modified onto stainless steel (SS) mesh through polydopamine (PDA), which was formed by the oxygen-induced polymerization of dopamine (DA). Therefore, the roughness structure (SS-PDA@BMPs mesh) was obtained. Meanwhile, due to the catechol group of the PDA, cetylamine (CTA) with low surface energy and amino group was grafted onto PDA via the Michael addition reaction to construct the superhydrophobic coating (CTA@PDA@BMPs). The effects of the morphology of BMPs, the ratio of BMPs to DA, the reaction time, and the concentration of CTA on superhydrophobicity of SS-CTA@PDA@BMPs mesh were discussed, which showed the water contact angle of 164° and the sliding angle of 3° for the SS-CTA@PDA@BMPs mesh fabricated under optimal conditions. The SS-CTA@PDA@BMPs mesh with great chemical stability and mechanical durability displayed excellent self-cleaning property and oil/water separation efficiency. When the PU sponge was coated with CTA@PDA@BMPs coating by the same process, the superhydrophobic PU sponge was obtained, which exhibited superior reusability and flame retardancy property. Thus, the prepared superhydrophobic materials are multifunctional and environmentally friendly.
研究领域:
材料科学
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表面工程
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环境科学
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CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Jiayan Yu,Jianyang Shi,Qihan Jia,Haibo Wang,Xu Cheng,Xiaosheng Du,Shuang Wang,Zongliang Du
Biomass-based cellulose aerogels show great potential in many important functional applications, particularly in the field of thermal insulation. However, it has been a grand challenge to construct multifunctional cellulose aerogels with hyperplastic, flame retardancy, and superhydrophobicity for enabling effective thermal insulation in practical application. Here, a hierarchically construction strategy for fabricating cellulose composite aerogels by co-assembling PMSQ-coated BC nanofibers and boehmite sol during directional freezing technique and a silanization process followed by PDMS chemical vapor deposition is reported. Besides, PCB composite aerogels exhibit low bulk density (17.8 mg·cm −3 ) and high specific surface area (223.9 m 2 ·g −1 ) and excellent thermal insulation (low thermal conductivity of 25.7 mW·m −1 ·K −1 ). Remarkably, its super-elasticity (recovers quickly after being subjected to a pressure of 9000 times its own weight) is realized by the created “beam-column” structural design. Owing to the presence of the synergistic effect of PMSQ and boehmite, PCB composite aerogels possess an ultra-high LOI value of 58 and rapidly self-extinguishes upon removal from fire. Notably, the PDMS after graft modification by via CVD imparts PCB superhydrophobicity, evidenced by a static WCA value of 151° ± 0.7°. This study offers a facile strategy for creating multifunctional cellulose aerogels with great potential for applications in thermal insulation, thermal management, and fire safety.
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PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
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2013
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IF 2.77
Yuhang Cai,Mengmeng Zhao,Henti Wang,Yongjin Li,Zhigang Zhao
Flame-retardant nanocomposites with high transparency based on poly (vinyl alcohol) (PVA) and pseudo-boehmite nanorods have been fabricated by synthesis of pseudo-boehmite nanorods and subsequent solution blending with PVA. The morphology and physical properties of PVA/pseudo-boehmite nanocomposites have been characterized systematically. Scanning electron microscopy investigations showed the homogeneous dispersion of pseudo-boehmite nanorods within PVA matrix even at very high nanorods loadings. The nanocomposites with 37.5 wt% pseudo-boehmite nanorods exhibit limit oxygen index (LOI) as high as 30.0 with the transmittance of more than 90% at the visible region and the enhanced refractive index . Moreover, the incorporation of the pseudo-boehmite nanorods increases the modulus and the tensile strength of PVA, indicating the significantly enhanced surface hardness of the nanocomposite. It is considered that the prepared PVA nanocomposites are not only useful as flame-retardant fibers, a long term pursued target for PVA fabrics, but also as optical appliances with its excellent transparency and high refractive index.
研究领域:
材料科学
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纳米技术
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高影响因子
NANOTECHNOLOGY
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2023
·Vol. 34
·期 24
·245401
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IF 3.5
Wenjing Fu,Cundi Wei,Shaonan Xu,Enhui Wang,Jinyi Zhang,You Xu,Jiyuan Zou,Jilun Wei,Jing Zuo
A particular bird's nest-like pseudo-boehmite (PB) composed of cohesive nanostrips was prepared by a novel and facile approach based on the reaction of Al–Ga–In–Sn alloy and water, together with ammonium carbonate. The PB possesses a large specific surface area (465.2 m2 g−1), pore volume (1.0 cm3 g−1), and pore diameter (8.7 nm). Subsequently, it was utilized as a precursor to form the TiO2/γ-Al2O3 nanocomposite for tetracycline hydrochloride removal. The removal efficiency can reach above 90% at TiO2:PB = 1:1.5 under the Sunlight irradiation simulated by a LED lamp. Our results indicate that the nest-like PB is a promising carrier precursor for efficient nanocomposite catalysts.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Wenting Wang,Zhaoshuang Li,Chaoqi Chen,Yuanfeng Wei,Xu Xu,He Liu,Chuntao Kuang,Guoen Yang,Xingong Li,Yan Qing,Yiqiang Wu
The massive release of oily wastewater poses a significant threat to ecological systems and environ mental sustainability. Superhydrophobic materials have been regarded as an effective solution for the treatment of oily wastewater. Herein, a multifunctional superhydrophobic coating (poly(DR-DMA)@BMP coating) was developed using a constructed from rosin-based polymer (poly(DR-DMA)) and nano-boehmite particles (BMP). Poly(DR-DMA) was fabricated by double-bond modified dopamine (DMA) and double-bond functionalized rosin acid (DR). The poly(DR-DMA)@BMP coating exhibited excellent superhydrophobicity with a water contact angle of up to 163°, along with self-cleaning performance. Meanwhile, the poly(DR-DMA)@BMP coating had desirable oil-water separation, with a permeation flux of 8966.67 L·m −2 ·h −1 , and an n-heptane separation efficiency of 98.26 %. After 10 separations, the permeation flux and separation efficiency remained high. In addition, the poly(DR-DMA)@BMP coating retained excellent superhydrophobicity (water contact angle >150°) and emulsions separation after mechanical and chemical treatment. Thermo-gravimetric analysis and Derivative thermo-gravimetry curves illustrated increased thermal stability of the coating, which indicated that the poly(DR-DMA)@BMP coating exhibited a certain degree of flame retardancy. The freezing time of water droplets on the coated sample was extended to 1100 s at −20 °C, indicating that the poly(DR-DMA)@BMP coating had favorable anti-icing properties. To encapsulate, the poly(DR-DMA)@BMP coating holds promising applications in the realms of oil-water separation, flame retardancy and anti-icing.
研究领域:
材料科学
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环境科学
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化学工程
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
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IF 5.4
Shuai Zhao,Qian Li,Yan Zhang,Yuqi Han,Tian Chen,Xuanfeng Chen,Zhe Yin,Shichao He,Yongbin Yang,Hai-gang DONG
Developing a novel cross-flow rotary carbonation (CFRC) technology. • Efficient Synthesis of High-Performance Pseudo-Boehmite (PB). • Thermodynamic analysis defines optimal PB window: T < 300 K, pH 10.4–13.0. • CFRC‑derived PB achieves 455 m²/g specific surface area, 1.26 cm³ /g pore volume. • Per ton PB products can reduce > 38 t alkaline wastewater with > 98% Al recovery. The aluminum industry generates large volumes of high-aluminum alkaline wastewater, yet efficient recovery of aluminum from such streams remains a challenge. In this study, we develop a novel cross-flow rotary carbonation (CFRC) process that integrates an ultra-fine atomizing gas disk with rotational stirring to decouple the mass transfer and crystallization stages, significantly enhancing gas-liquid reaction efficiency. Thermodynamic analysis reveals that the optimal conditions for pseudo-boehmite (PB) formation are T < 300 K and pH 10.4–13.0. Orthogonal experiments identify the key synthesis parameters: 0.1 mol/L NaAlO 2 , caustic ratio of 1.5, endpoint pH of 10.5, CO 2 flow rate of 0.5 L/min, and stirring speed of 350 rpm. Under these conditions, the CFRC-derived PB exhibits exceptional textural properties with a specific surface area of 455 m²/g, pore volume of 1.26 cm³ /g, and average pore size of 13.86 nm, representing a 94% increase in surface area over conventional batch stirring carbonation. Notably, NaAlO 2 concentration is the dominant factor; concentrations above 0.3 mol/L promote competitive gibbsite formation and deteriorate the pore structure. The process achieves over 98% aluminum recovery and reduces alkaline wastewater discharge by more than 38 tons per ton of PB produced, offering a green and efficient route for resource valorization. Download: Download high-res image (194KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Shuwei Lan,Zhaowen Wang,Qianhan Zhao,Zhibo Liu,Jiaming Li
Boehmite, as an important functional material, has wide applications in catalysts, flame retardants, and lithium battery separator coatings. In this study, a novel method is proposed for the synthesis of nano/micron-sized boehmite by integrating the sol-gel method, sodium aluminate decomposition, and hydrothermal process. This synthesis employs AlCl 3 — derived from hydrochloric acid extraction of Al 2 O 3 in waste coal fly ash — to synthesize boehmite with mean particle sizes ranging from 0.13 to 4.31 μm. For representative nano-sized boehmite synthesis, optimal parameters are pH of 4, hydrothermal temperature of 200 ℃, and duration of 12 h. The Al(OH) 3 precursor preparation requires a caustic ratio of 1.5, Na 2 O concentration of 160 g/L, seed coefficient of 0.15, decomposition temperature of 65 ℃, duration of 24 h, and agitation rate of 90 r/min. The typical micron-sized boehmite synthesis is optimized at a pH of 12 with hydrothermal treatment at 180 ℃ for 12 h. Under these conditions, nano-sized boehmite exhibited a mean particle size of 180.55 nm, while micron-sized boehmite displayed a mean particle size of 4.31 μm. Nano-sized boehmite exhibits fibrous, hexagonal, and rhombic morphologies, while micron-sized boehmite is predominantly hexagonal. The transformation mechanism proceeds via dissolution-precipitation of the Al(OH) 3 precursor.
研究领域:
材料科学
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纳米技术
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化学工程
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环境科学
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高影响因子
危险品化学品经营许可证（带存储）