一种新的超临界相和二维水的快速输运。

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-05-16 DOI:10.1021/acs.nanolett.5c00368

Zhihao Wang,Yang Liu,Yong-Qiang Li,Yuanyuan Qu,Ruhong Zhou,Mingwen Zhao,Weifeng Li

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引用次数: 0

摘要

约束体系中的水结构和动力学与体相中的水结构和动力学有很大的不同。在这里，我们报告了在0.65 nm的Au纳米狭缝中发现的新的超临界（SC）水相。在SC水中，两个亚稳相共存，一个表现为固体状（SL）行为，另一个表现为液体状（LL）行为。通过计算“压力-体积”面等温线，确定临界点为(Tc/K, Pc/MPa) =（262±2,14±2）。在偏压条件下，LL域可以在亲水的Au纳米狭缝中形成快速流动，挑战了快速水传输只能在疏水环境中发生的传统观点。相反，我们的研究结果表明，不协调是有效水运的关键因素。这些发现有助于更好地理解复杂的水相图，并可以找到水处理的工业潜力。

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A New Supercritical Phase and Fast Transport of Water in Two-Dimensions.

Water structure and dynamics in confinement systems differ significantly from those in the bulk phase. Here, we report a new supercritical (SC) phase of water found in a 0.65 nm Au nanoslit. In this SC water, two metastable phases coexist, one shows solid-like (SL) behavior and the other is liquid-like (LL). Through calculating the isotherms in the "pressure-volume" plane, the critical point is determined to be at (Tc/K, Pc/MPa) = (262 ± 2, 14 ± 2). Under biased pressure, the LL domain can form a quick flow in the hydrophilic Au nanoslit, challenging the conventional wisdom that fast water transport can only occur in a hydrophobic environment. Instead, our results suggest that undercoordination is the key factor for efficient water transport. These findings contribute to a better understanding of the complicated water phase diagram and could find industrial potential for water treatment.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.