Meichen Liang, Yongxin Cheng, Xin Zhou, Jie Liu, Jianjun Wang
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引用次数: 0
摘要
长石表面特征对冰成核的作用一直难以捉摸。本文采用简单的策略定量分析了钾长石表面形态和分子组成对冰成核的影响。与扁平的钾长石表面相比,在富含阶梯的新劈裂长石表面上,水滴的凝固温度会升高约 4.5 °C,由此可见,阶梯是造成高冰成核效率的原因。在分子成分和原子结构被氟化破坏后,在裂解表面和平整表面上观察到的冰核温度都大幅降低了约 9.0 °C,而台阶仍然提高了疏水裂解表面的冰核活性。表面成分的影响也意味着 K 长石的分子成分和结构特异性在促进冰成核方面的重要性。
Determining Roles of Potassium-Feldspar Surface Characters in Affecting Ice Nucleation
The roles of surface characteristics of the feldspar surface on ice nucleation have remained elusive. Here, simple strategies are reported to quantitatively analyze the effects of the surface morphology and molecular composition of the potassium-feldspar surface on ice nucleation. The steps are found to be responsible to the high ice nucleation efficacy according to the fact that water drop freezing temperature increases by about 4.5 °C atop the freshly cleavage feldspar surface being rich of steps comparing to the flattened ones. After the molecular component and atomic structure are destroyed by the fluorination, a tremendous decrease of the ice nucleation temperatures by around 9.0 °C is observed on both cleavage and flattened surfaces, and the steps still improve the ice nucleation activity of the hydrophobic cleavage surfaces. The influence of the surface composition also implies the importance of the molecular component and structure specificity on K-feldspar in facilitating ice nucleation.
Small MethodsMaterials Science-General Materials Science
CiteScore
17.40
自引率
1.60%
发文量
347
期刊介绍:
Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques.
With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community.
The online ISSN for Small Methods is 2366-9608.