Stability of Nanobubbles Formed at the Interface between Cold Water and Hot Highly Oriented Pyrolytic Graphite

被引：39

作者：

An, Hongjie ^{[1
]}

Tan, Beng Hau ^{[1
]}

Zeng, Qingyun ^{[1
]}

Ohl, Claus-Dieter ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Cavitat Lab, Singapore, Singapore

来源：

LANGMUIR | 2016年 / 32卷 / 43期

基金：

新加坡国家研究基金会;

关键词：

ATOMIC-FORCE MICROSCOPY; ELECTROCHEMICAL GENERATION; HYDROPHOBIC SURFACES; NANODROPLETS; SOLUBILITY; LIQUIDS; BUBBLES; GROWTH;

D O I：

10.1021/acs.langmuir.6b01531

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

For the wider application of nanobubbles, a simple and reproducible nucleation process is not readily available. Here we describe a method for nucleating nanobubbles using only the most basic of conditions: depositing cold water at 4 degrees C on heated highly oriented pyrolytic graphite substrates. This method thus avoids the need, as in previous studies, to use secondary liquids, salts, or electrolysis to nucleate the nanobubbles and provides a pure system in which the properties of nanobubbles can be studied. The nanobubbles generated with this method are observed to survive for at least 5 days, barely changing their contact angles or heights after the first few hours. The stability of the nanobubbles in our system is discussed within the framework of some recently published theories.

引用

页码：11212 / 11220

页数：9

共 41 条

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