Applied Materials Today
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2025
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IF 6.9
Hangyu Miao,Yongli Liao,Peng Wang,Wenliang Wang,Jiaxuan Zhang,Zhe Li,Jie Liu,Tong Huang,Ziheng Zheng,Wen Duan,Ying Yue,Yunpeng Liu
Superhydrophobic materials have garnered significant interest due to their exceptional performance across various applications. However, conventional superhydrophobic coatings are susceptible to degradation in extreme environments, resulting in functional failure. Drawing inspiration from ancient Chinese rammed earth technology, this study introduces a novel superhydrophobic monolith with a uniform structure and self-regenerative recyclability, fabricated through a stamping process. The developed monolith exhibits a remarkably high contact angle (157.2°) and a low roll-off angle (2.7°). It consists of room-temperature vulcanized (RTV) silicone rubber and superhydrophobic silica nanoparticles synthesized via high-pressure stamping.Through the integrated“polymer + nano-component”stamping approach, the fabricated superhydrophobic monolith achieves a compact and continuous internal structure, coupled with high compressive strength. Following 20,000 abrasion cycles under a 250 g load using rigid ceramic grinding wheels, the material exhibits a mass loss of only 26.501 r/g and a thickness loss of 14.932 r/mm, significantly surpassing the durability of other superhydrophobic materials. Notably, the worn surface retains its superhydrophobic properties.Furthermore, the monolith displays outstanding resistance to acid/alkali corrosion, salt spray exposure, and UV-induced degradation. The structural integrity imparted by the stamping process ensures the retention of its initial superhydrophobicity during recycling, underscoring its suitability for post-use recovery. This advancement expands its potential applications in industrial settings.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
MATERIALS RESEARCH INNOVATIONS
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2015
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IF 0.83
R. Li,R. Qian,J. Tan,Z.-T. Jiang
The macro-mesoporously bimodal titania monolith with high surface area was synthesised via a template-free sol–gel route using titanium isopropoxide as titania source and poly(ethylene oxide) as an improver of the pore structure and specific surface area. The effects of poly(ethylene oxide) on the shape and specific surface area of the titania monolith were determined. The titania monolith was characterised by scanning electron microscope, Brunauer–Emmett–Teller method and ultraviolet diffuse reflectance spectra measurements. The obtained titania monolith shows excellent surface properties with macropore of 2 µm, mean pore size of 15·2 nm, Brunauer–Emmett–Teller surface area of 110·3 m2 g−1, cumulative pore volume of 0·32 mL g−1 and a narrow pore size distribution after 350°C calcination.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
ChemCatChem
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2025
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IF 3.9
Cheng-Long Li,Rui-Ping Zhang,Lu Hou,An-Hui Lu
Pd-catalyzed semihydrogenation of alkynols to enols is a pivotal industrial process for synthesizing fine chemicals like fragrances and vitamins. The selection of carbon-based supports is crucial due to their advantages in good chemical and thermal stability, tunable surface properties, and facile metal recovery via combustion. Herein, we constructed the wood-based monolithic carbon support with a sulfur-doped mesoporous carbon layer to anchor high-dispersed Pd nanoparticles. This mesoporous carbon layer was fabricated via co-polymerization of 2-thiophenemethanol and tetraethoxysilane monomers formed by decomposition of the tetrakis(2-thiophenemethoxy)silane on wood substrates, followed by pyrolysis, and removal of silica. The resultant Pd/C catalyst exhibited high catalytic activity (4323 mol mol Pd −1 h −1 ) and selectivity (93% at 99% conversion) under mild conditions (298 K, 2 bar H 2 ) in 2-methyl-3-butyn-2-ol (MBY) semihydrogenation. The thiophene-like sulfur and mesoporous framework synergistically promoted Pd dispersion, thereby boosting catalytic activity. Meanwhile, the electron-rich Pd 0 sites, which originated from electron donation of thiophene-like sulfur species, significantly enhanced catalytic selectivity. Additionally, the sulfur-modified monolithic catalyst presented good stability over five cycles and facile separation from the solution. It also displayed broad applicability in diverse alkynol semihydrogenation reactions, demonstrating high potential for liquid-phase catalytic applications. Graphical Surface sulfur-doped monolithic carbon with mesoporous structures is constructed to anchor high-dispersed Pd nanoparticles. Thiophene-like sulfur synergizes with mesopores to enhance Pd dispersions and donates electrons to form electron-enriched Pd sites, thereby boosting catalytic activity and selectivity. This monolithic design facilitates separation, demonstrating high potential for liquid-phase reactions.
研究领域:
催化化学
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材料科学
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有机合成
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纳米催化
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多相催化
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产品关联
DOI
高影响因子
GIANT
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2023
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IF 7
Xin Xu,Hongli Hu,Hangyu Zhong,LinGe Wang,Bo-xing Zhang
In recent decades, the sol-gel process accompanied with phase separation has been employed to fabricate porous monolithic ceramic materials. However, it is challenging to obtain crack-free samples by using this method, due to the fragile nature of porous ceramic materials and the large internal stress generated from drying and calcination process. In this work, tough monolithic titania (TiO 2 ) materials were fabricated by the sol-gel process accompanied with phase separation in solutions of silicon carbide (SiC) nanofibers and preceramic polymers. It was found that polyethylene oxide (PEO) and ethylenediamine (EDA) can promote phase separation and sol-gel process respectively, and the micro-morphology of porous monolithic TiO 2 materials can be flexibly tuned by adjusting the contents of PEO and EDA. The addition of SiC nanofibers effectively enhanced the mechanical performance and photocatalytic activity of porous TiO 2 materials without altering their bicontinuous micro-morphology. Taking TiO 2 materials as an example, this work demonstrates a novel methodology to fabricate ceramic nanofibers reinforced porous monolithic ceramic materials.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Min Wen,Cheng Peng,Ming Yao,Chao Wang,Tingzhen Ming,Biaoling Peng,Fuzhi Huang,Jie Zhong,Yi-Bing Cheng,Qi Zhang
The gas–liquid membrane contactor forms a gas–solid–liquid interface and has a high potential for the applications in gas adsorption, catalysis, energy exchange, and so on. Porous superhydrophobic membranes show a great gas separation/adsorption ability. However, the complicated device architecture and the durability issue are normally concerned especially for the continuous circulation of gas and liquid. In this work, we present a free-standing gas-conductive circuit simply formed by connecting the superamphiphobic porous monoliths (SAPMs) to achieve an efficient under-liquid gas adsorption. The porous worm-like SAPM is prepared with low-temperature expandable graphite and polyvinylidenefluoride, exhibiting superamphiphobicity and superaerophilicity after fluoridation. The as-made SAPM circuits can be used as a reliable gas conductor under numerous liquids, such as water, alkaline, acidic, and oily solutions. In this work, the CO2 adsorption capacities of the SAPM circuits are evaluated under NaOH and methyldiethanolamine solutions and the mass transfer rate can reach up to 9.61 mmol m–2 s–1. Moreover, the effective human blood oxygenation process is also demonstrated using SAPM circuits. Thus, the reported SAPM provides an alternative gas–liquid exchanging method and the simplified process could be of great benefit to the cost-effectively large-scale CO2 capture or gas exchanging applications.
研究领域:
材料科学
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环境科学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2017
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IF 3.133
Xingzhong Guo,Pengan Yin,Wei Lei,Hui Yang,Kazuyoshi Kanamori,Kazuki Nakanishi
Hierarchically porous ZnAl 2 O 4 spinel monolith derived from ionic precursors has been successfully prepared via the sol-gel route accompanied by phase separation in the presence of poly (ethylene oxide) (PEO) and propylene oxide (PO). Appropriate amounts of PEO as a phase-separation inducer and PO as a gelation mediator allow the formation of the xerogel with bicontinuous macrostructure and a monolithic shape. The macropore size of the resultant dried gel is mainly distributed in the range of 0.2–1 μm, and the whole porosity is about 65%. The dried gel is constructed by crystalline Zn Al hydrotalcite, becoming amorphous after heat-treated at 300–500 °C in air, and is further transformed into single phase ZnAl 2 O 4 spinel with plate-like shape at 600 °C. The macroporous structure is well maintained while the porosity increases to 75% and the surface area rises to 109 m 2 g −1 after heat-treatment.
研究领域:
材料科学
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无机化学
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多孔材料
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功能陶瓷
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纳米结构材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）