COMPOSITE INTERFACES
·
2026
·
IF 2.4
Shuyi Liu,Mengru Zhang,Jinshuang Guan,Ziyue Wang,Hongyan Liu,Guoliang Mao
Wax deposition constitutes a severe flow assurance challenge in the petroleum industry. Hydrophilic coatings show great potential for wax inhibition based on the water film theory. Herein, we report a novel silica-modified fly ash/aluminum dihydrogen phosphate (FA@SiO2/ADP) hydrophilic coating with hybrid micro/nano-architectures. The introduced hierarchical structures induce strong capillary action toward water, while abundant surface hydroxyl groups and phosphate networks facilitate the formation of a stable and continuous water film via hydrogen bonding and covalent P–O–Si cross-linking. This results in outstanding underwater oleophobicity and wax inhibition efficiency of 51.2%. Furthermore, the coating exhibits significantly enhanced interfacial strength and mechanical robustness due to the inorganic ADP binder and the formation of network structure. This work not only provides a practical and cost-effective antiwax coating with promising industrial applicability but also offers deeper mechanistic insights into the design of durable hydrophilic surfaces for harsh operational environments.
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DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2023
·
IF 7.5
Wansi Lin,Lincai Peng,Huai Liu,Junhua Zhang
Zirconium-derived catalyst with abundant Lewis acid-base pairs has earned it a place of prominence for the catalytic upgrade of bio-based carbonyls to valuable chemicals and fuels through catalytic transfer hydrogenation (CTH) reaction. However, the low catalytic efficiency of Zr-based catalysts urgently needs to be improved to meet the criterion for their industrial deployment. In this contribution, tungstophosphoric acid (HPW) was demonstrated as an effective modifier to the electronic structure of the pristine polyacrylonitrile and lignin-supported Zr nanofiber (Zr-Lig@PAN) to boost the CTH of levulinic acid (LA) into γ-valerolactone (GVL). Especially, an impressive GVL formation rate of 32.5 mmol·g −1 ·h −1 was implemented over Zr/HPW 0.75g -Lig@PAN, significantly prevailing over the previous reported Zr-based catalysts for the CTH of LA or its ester to GVL. Mechanistic investigations well demonstrated that the superior electron-accept ability of HPW allowed the construction of electron-deficient Zr sites, which is beneficial to the adsorption and activation of LA and isopropanol, thus boosting the CTH reaction. These findings open up a new avenue to design efficient Zr-based catalysts for the CTH reaction by elaborately tuning the electronic structure of the catalyst in the presence of a second metal.
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高影响因子
Sustainable Energy & Fuels
·
2023
·Vol. 7
·期 15
·3716-3726
·
IF 5.6
Wansi Lin,Yue Wang,Junhua Zhang,Huai Liu,Lincai Peng
Lignin is a highly abundant biopolymer next to only cellulose, and its transformation into high value-added products is always of interest. It is well known to contain bounteous hydroxyl groups, which can act as natural organic ligands to assemble metal catalysts. Herein, lignin was selected to assemble well-dispersed Zr nanoparticles in polyacrylonitrile nanofiber by electrospinning technology (ZrNPs-lignin/PAN). Systematic characterizations revealed that lignin promoted the coordination between zirconium ions and PAN nanofibers to generate Lewis acid and Lewis base sites. The abundant Lewis acid–base sites confer the composite with remarkable catalytic activity in the transfer hydrogenation (TH) of furfural (FAL) into furfuryl alcohol (FOL), and a quantitative yield of 95.9% with a high TOF of 15.1 h−1 was obtained under mild conditions. ZrNPs-lignin/PAN exhibited good recycling stability and excellent universality in the CTH of a diverse array of carbonyl chemicals into their corresponding products.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 32
·1-13
·
IF 2.8
Tang Guohui,Ren Qian,Chen Zheng,Ding Zixuan,Zhu Changtian,Chen Jin,Xu Gaojie,Liu Fenghua
In this study, an economical graphene-based electrothermal composite slurry was synthesized via a facile liquid-phase ball milling technique, employing mechanically exfoliated graphene as the conductive filler, aluminum dihydrogen phosphate as the binding agent and span85 as a dispersing agent. The resultant slurry was utilized to fabricate electrothermal coatings through screen printing technology. A comprehensive investigation was conducted to evaluate the influence of graphene concentration on the physical appearance, microstructure, electrothermal characteristics, and mechanical adherence of the electrothermal coatings. The findings indicate a positive correlation between graphene content and the electrical conductivity of the coatings, with a concurrent increase in the attainable heating temperature. Specifically, a coating comprising an equal ratio of graphene to aluminum dihydrogen phosphate exhibited a diminished square resistance of 16.10 Ω sq −1 and was capable of swiftly elevating to a temperature of 431 °C under an applied voltage of 36 V. Moreover, the coatings demonstrated robust adhesion to borosilicate glass, quartz glass, and stainless steel substrates, with particularly noteworthy adhesion strength of up to 49,160 mN on borosilicate glass. These attributes suggest a broad spectrum of high-temperature applications for the developed electrothermal coatings.
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高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Yuming Zhang,Wenjian Lin,Cong Li,Xianzhang Dong
Modern civil and industrial fire protection applications demand increasingly rigorous performance standards for thermal insulation materials. While aerogel-based coatings have emerged as promising candidates in recent years, their effectiveness remains constrained by limited aerogel loading capacities, which fundamentally restricts their thermal insulation performance. Here, we fabricate an Al-doped silica aerogel coating inspired by the closet packing design of concrete. The result coatings’ aerogel content could up to 95 %–98 %, which is far beyond the present reported works. Besides, the coating showed ultra-lightweight property (263.36 ± 4.56 mg/cm 3 ), outstanding thermal insulation performance (29.75 mW m −1 K −1 at 25 °C, 168.97 mW m −1 K −1 at 1000 °C), and could work at 800 °C for long-term with backside temperature 258 °C (4 mm thickness). Meanwhile, the result coating showed super fire retardant compared to commercial aerogel coating and fire intumescent coating. This large aerogel content coating with excellent fireproof performance can perfectly match the advanced fire protection requirements, and provide an idea for improving thermal insulation performance of coatings.
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高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 4
·1-12
·
IF 21.8
Li Cong,Liu Dizhou,Yu Hongxuan,Zhao Han,Guo Jingran,Song Chuanyun,Zhao Yingde,Zhang Jianing,Deng Yuanpeng,Dang Shixuan,Wang Duola,Chen Jiali,Yan Zhengli,Lin Tiande,Li Hui,Xu Xiang
Advanced fire protection for infrastructures and facilities requires fireproof coatings that can possess high fire resistance, thermal insulation, flexibility, and durability. Conventional coatings are usually developed by composing inorganic fillers and organic binders, still suffering from limited fireproof effect, severe fracture, and short working life. Here, we report a dual-aerogel design of robust aluminosilicate ceramic coating with natural-dried nanoporous aerogel for thermal insulation and electro-spun nanofibrous aerogel for flexible deformation. The resulting coating, with a thickness of only 3 mm, exhibits a fire superprotection performance with fire resistance up to 1400 °C, thermal conductivity of only 103.55 mW·m −1 ·K −1 at 1000 °C, hydrophobicity of contact angle up to 154°, and ultraflexibility of a 90° bending angle with 10,000 times of fatigue resistance. This unique dual-aerogel design can well resolve the formidable thermal–mechanical trade-off in fireproof coatings and establish a set of fundamental considerations in material design for fire superprotection.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yi Hou,Jixiang Wang,Baijun Chen,Hui Zhang,Zichen Xiang,Haikui Zhu,Lixi Wang
To meet the requirements of lightweight and wideband attenuation for advanced electromagnetic (EM) absorption materials, the combination of both MOF composition and hierarchical structural design was applied as the strategy to prepare the MOF-derived Co@SiC nanowire (Co@SiCnw) nanocomposite aerogel. The hierarchical and laminated structures with multiple Co@SiCnw layers were constructed via a mixed growth-assisted freeze-drying and calcination process. The ultralightweight Co@SiCnw presents a low density of 0.11 g/cm3. With abundant second-phase polarization interfaces and enlarged EM wave attenuation channels to enhance dielectric and conductive loss, the optimized Co@SiCnw offers a minimal reflection loss (RLmin) of −61.4 dB at 10.0 GHz (2.64 mm) and an effective absorption bandwidth (EAB) as wide as 7.44 GHz with a sample thickness of only 2.16 mm. Furthermore, multifunctionalities, including low density, thermal insulation, and self-standing, were demonstrated for Co@SiCnw, making it a high-performance and practical microwave absorption material.
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DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Ao Wang,Zhifeng Huang,Mingyong Jia,Xuye Wang,Qianshun Cui,Zhihao Wang,Qiang Shen,Fei Chen
Vat photopolymerization 3D printing of Si 3 N 4 ceramics enables complex geometries, but oxygen inhibition during photocuring induces incomplete resin polymerization. Additionally, although larger Si 3 N 4 particles improve curing depth, their sparse packing after debinding compromises sintering densification. In the present work, the oxygen reduction effect of potassium iodide was utilized to mitigate the influence of surface oxygen on resin curing. As a result, the curing depth was enhanced to 132 µm, surpassing the previously reported values of less than 90 µm. This advancement enabled the successful fabrication of complex Si 3 N 4 ceramic components with a single-layer thickness of 50 µm. Furthermore, Al(H 2 PO 4 ) 3 was incorporated as a binder, which decomposes during the debinding process to form A-type phosphate salts on the surface of the large-size (2.66 µm) Si 3 N 4 powders. These salts establish physical bonds among the powders, effectively reducing interparticle spacing and promoting densification. The present work synthesized Si 3 N 4 ceramics with a flexural strength of 304 MPa at a relatively low sintering temperature of 1700°C.
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高影响因子
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