Effect of Temperature and Acoustic Pressure During Ultrasound Liquid-Phase Processing of Graphite in Water
Effect of Temperature and Acoustic Pressure During Ultrasound Liquid-Phase Processing of Graphite in Water
复制标题
水中石墨超声液相处理过程中温度和声压的影响
DOI：
10.1007/s11837-021-04910-9
复制
发表时间：
2021
期刊：
影响因子：
2.6
通讯作者：
Morton J
中科院分区：
文献类型：
--
作者：
Morton J
超声辅助液相剥离法是一种很有前途的二维材料制备方法。了解超声参数如温度和输入功率对所形成的压力场的影响是优化该过程的关键。已经进行了有限的研究来确定剥落的最佳温度，一些数据产生了有争议的结果。由于屏蔽，简单地最大化超声功率不一定产生更高的产率。在这项研究中，使用高温校准的空化计来测量在不同温度（从10°C到70°C）和输入功率条件（从20%到100%）下在去离子水中的不同石墨溶液中产生的声压。此外，高速光学成像提供了对不同超声处理条件下瞬态气泡破裂产生冲击波的洞察。确定了最佳超声剥离参数，对于石墨薄片溶液，在10°C下为20%输入功率，对于石墨粉末溶液，在40°C至50°C下为100%输入功率。
Ultrasound-assisted liquid-phase exfoliation is a promising method for manufacturing two-dimensional materials. Understanding the effect of ultrasonication parameters such as the temperature and input power on the developed pressure field is pivotal for optimization of the process. Limited research has been carried out to determine the optimal temperature for exfoliation, with some data generating disputed results. Simply maximizing the sonication power does not necessarily produce a higher yield because of shielding. In this study, a high-temperature calibrated cavitometer was used to measure the acoustic pressure generated in different graphite solutions in deionized water at various temperatures (from 10°C to 70°C) and input power conditions (from 20% to 100%). In addition, high-speed optical imaging provided insight on the shock wave generation from transient bubble collapses under different sonication conditions. The optimal sono-exfoliation parameters were determined to be 20% input power at 10°C for graphite flake solution, and 100% input power at 40°C to 50°C for graphite powder solution.
影响因子：
56.9
作者：
Lee, Changgu;Wei, Xiaoding;Hone, James
通讯作者：
Hone, James