ACS Nano
·
2024
·
IF 15.8
Ming Yang,Ni Yao,Xiaoxi Li,Jianyong Yu,Shichao Zhang,Bin Ding
Distillation membranes with hydrophobic surfaces and defined pores are considered a promising solution for seawater desalination. Most existing distillation membranes exhibit three-dimensional (3D) stacking bulk structures, where the zigzag water-repellent channels often lead to limited permeability and high energy costs. Here, we created two-dimensional nanowebs directly from the polymer/sol solution to construct dual-asymmetric Janus membranes. By tailoring the phase separation rate, the polymer phase evolved into continuous hydrophilic webs in situ weld on the microporous hydrophobic layer. The webs possess true-nanoscale architectures (internal fiber diameter of ∼20 nm, pore size of ∼140 nm) with enhanced roughness, serving as a superspreading surface to reach a water contact angle of 0° in 1.7 s. Benefiting from the architecture and wettability dual asymmetries, the obtained Janus membrane shows high-efficiency desalination performance (salt rejection >99%, flux of 11 kg m–2 h–1, and energy efficiency of 79%) with a thickness of 6.7 μm. Such a fascinating nanofibrous web-based Janus membrane may inspire the design of advanced liquid separation materials.
研究领域:
材料科学
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环境工程
·
化学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jianning Yu,Xiaotao Yang,Peijia Li,Enfeng Yang,Haitao Deng,Guoliang Liu,Xiangdong Yang,Shende Zhai,Lu Zhang,Yining Wu,Dezhao Hao,Caili Dai,Ye Tian,Lei Jiang
Superspreading occurs when the liquid-surface interaction becomes sufficiently strong to overcome the liquid's surface tension, as evidenced by a contact angle approaching 0°. Conventional superspreading relies on complex designed artificial or biological surfaces, or external stimuli, which renders it challenging to exert its efficacy in common scenarios. Herein, inspired by mussel adhesion to rocks, we introduced a strategy utilizing catechol-based compounds that demonstrate strong silicate binding in saline environments, effectively modulating liquid-liquid-solid wettability at the molecular scale. Under mildly basic conditions, catechol induces a stable hydrated layer on the silicate surface, increasing the surface charge and facilitating the dewetting of oil during spreading. The strong interaction between catechol and silicon overcomes the van der Waals forces between silicate and crude oil, enabling efficient oil displacement. Moreover, we demonstrate that polyphenol-treated surfaces perform better in high-salinity environments, where surfactants lose effectiveness due to agglomeration caused by calcium ion. In contrast, polyphenol-based composite agents achieve a 70 % crude oil recovery in oil sand separation and a 90 % recovery in core flooding tests. The study demonstrates the potential of polyphenol‑silicon complexation for cost-effective, scalable superspreading applications in oil recovery and contamination management, highlighting its robust salt tolerance and promising industrial relevance.
研究领域:
材料科学
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化学工程
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环境科学
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石油工程
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表面化学
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产品关联
DOI
高影响因子
Nano Research
·
2023
·
IF 9.9
Nie Zhidong,Sun Yingzhi,Zhou Tianxu,Kong Shengwen,Liu Linxing,Zhao Chuangqi,Liu Mingjie
One-dimensional (1D) aramid nanofiber (ANF) based nanocomposite films have drawn increasing attentions in various applications due to their excellent mechanical properties and impressive chemical and thermal stabilities. However, the large-area fabrication of aramid nanocomposite films with ultrastrong mechanical properties under mild conditions remains a great challenge. Here we present a facile superspreading-assisted strategy to produce aramid nanofiber based oriented layered nanocomposites using phase inversion process that occurs at the fully swollen hydrogel surfaces. The nanocomposite films based on ANF, carboxylation carbon tube (CNT –COOH ), poly(vinyl alcohol) (PVA), and MXene nanosheet exhibit a tensile strength of up to 870.8 ± 85 MPa, a Young’s modulus of 21.8 ± 2.2 GPa, and outstanding toughness (up to 43.2 ± 4.6 MJ/m 3 ), which are much better than those conventional aramid nanofiber based materials. Electrical conductivity of our nanocomposite films reaches the maximum of about 1100 S/m. The fabulous mechanical properties combination and continuous production capability render our strategy representing a promising direction for the development of high-performance nanocomposites.
研究领域:
材料科学
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纳米技术
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复合材料
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产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2023
·
IF 15
Zhongpeng Zhu,Yupeng Chen,Xianfeng Luo,Weining Miao,Zhichao Dong,Jiajia Zhou,Ye Tian,Lei Jiang
Controllable impact spreading behavior is critical for effective thermal management of spray cooling. However, splash and retraction are common problems on hydrophobic (HPB) and hydrophilic (HPL) surfaces. Herein, by regulation of surface wettability, we report a controllable ultrafast impact superspreading behavior (superspreading time of ∼3.0 ms) without splash and retraction on superamphiphilic (SAPL) silicon surfaces. Analysis of dynamic wetting processes combined with observation of lateral force microscopy images on SAPL surfaces reveals the existence of a precursor film at the spreading edge induced by heterogeneous surface wettability at nanoscale. Further study indicates that the inhibition of splash results from the high liquid flux in precursor film, which suppresses the interposition of air at the spreading edge. The reduction of Laplace forces owing to the presence of precursor film inhibits retraction at the spreading frontier. Taking advantage of this impact superspreading behavior on SAPL surfaces, effective heat dissipation is demonstrated, offering uniform and high heat flux for the spray cooling process.
研究领域:
材料科学
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热工程
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表面科学
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流体力学
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产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 26
·2210557
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IF 29.4
Zhe Xu,Peng Zhang,Chuanghui Yu,Weining Miao,Qiankun Chang,Ming Qiu,Yulong Li,Ye Tian,Lei Jiang
Enhanced boiling heat transfer via surface engineering is a topic of general interest for its great demand in industrial fields. However, as a dynamic interfacial phenomenon, a deep understanding of its process and mechanism, including liquid re-wetting and vapor departure, is still challenging. Herein, a micro-/nanostructured Cu surface containing a periodic microgroove/pyramid array with rich nanowrinkles is designed, where superspreading (<134.1 ms) of organic cooling agents highly boosts the liquid re-wetting process, causing a discontinuous solid–liquid–vapor three-phase contact line and ultralow under-liquid bubble adhesion force (≈1.3 µN). Therefore, a characteristic, ultrafast jet-flow boiling (bubbles rapidly ejected in multiple strips) is obtained on this surface, giving a priority to nucleation (superheat ≈ 1.5 °C) and simultaneously enhancing the critical heat flux and heat-transfer coefficient by up to 80% and 608%, respectively, compared with a flat surface. In situ observation and analysis of the nucleation, growth, and departure of micro-sized jet-flow bubbles reflects that microgrooves/pyramids with nanowrinkles promote the latent heat exchange process by superspreading-induced ultrafast liquid re-wetting and constant vapor film coalescing. Based on the designed structures, high-performance phase-change cooling for central processing unit heat management in supercomputer centers is accomplished with an ultralow power usage effectiveness (PUE < 1.04).
研究领域:
热能工程
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材料科学
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传热学
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表面工程
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冷却技术
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产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
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IF 6.97
Jinxing Li,Yanyun Bai,Wanxu Wang,Xiumei Tai,Guoyong Wang
A novel green glucamine-based trisiloxane surfactant (HAG) composed of a glucamine headgroup and trisiloxane tail was prepared by a completely “green” synthesis. Its chemical constitution, functional groups, and surroundings were characterized by Fourier transform infrared spectroscopy, mass spectrometry, and 1H and 13C NMR spectroscopy. The physicochemical properties of the target, including its surface activity, aggregation, and wetting behavior, were evaluated systematically. The findings reveal that HAG solution has a comparatively low surface tension (γ = 19.04 mN/m) and can spread rapidly on a parafilm surface. Furthermore, it can spontaneously assemble into vesicles.
研究领域:
化学
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材料科学
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表面科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）