The effect of ultrasound on bulk and surface nanobubbles: A review of the current status

Xiangning Bu; Muidh Alheshibri

doi:10.1016/j.ultsonch.2021.105629

The effect of ultrasound on bulk and surface nanobubbles: A review of the current status

Ultrason Sonochem. 2021 Aug:76:105629. doi: 10.1016/j.ultsonch.2021.105629. Epub 2021 Jun 12.

Authors

Xiangning Bu¹, Muidh Alheshibri²

Affiliations

¹ Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China. Electronic address: xiangning.bu@foxmail.com.
² Department of Basic Sciences, Deanship of Preparatory Year and Supporting Studies, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; Basic & Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia. Electronic address: mhalheshibri@iau.edu.sa.

Abstract

The generation, and stability of nanobubbles are of particular interest for fundamental research and have potential application in numerous fields. Several attempts were made in the literature to produce nanobubbles through acoustic cavitation. However, the generation and stability mechanisms of nanobubbles in the acoustic field are unclear. Here, we review the effect of ultrasound parameters on bulk nanobubbles and surface nanobubbles. On this basis, we discuss the proposed generation and stability mechanisms of nanobubbles from the perspective of transient and stable acoustic cavitation. Moreover, we propose some future research directions for a deeper understanding of the role of ultrasound in the generation and stability of nanobubbles.

Keywords: Bulk nanobubbles; Generation; Stability; Surface nanobubbles; Ultrasound parameters.

Publication types

Review