The effect of high-frequency acoustic wave vibration pattern on HKUST's multi-level pore structure

Tengfei Zheng; Chaoping Xu; Qing-Yuang Yang

doi:10.1016/j.ultsonch.2023.106368

The effect of high-frequency acoustic wave vibration pattern on HKUST's multi-level pore structure

Ultrason Sonochem. 2023 May:95:106368. doi: 10.1016/j.ultsonch.2023.106368. Epub 2023 Mar 15.

Authors

Tengfei Zheng¹, Chaoping Xu², Qing-Yuang Yang³

Affiliations

¹ State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China; Shaanxi Key Lab of Intelligent Robots, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China. Electronic address: tengfz@xjtu.edu.cn.
² State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China; Shaanxi Key Lab of Intelligent Robots, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
³ School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.

Abstract

The physical properties of materials are critical to their functionality, and the ability to control these properties using external forces is a significant challenge. In this study, we investigate the effect of three high frequency acoustic wave vibration patterns on the structure and morphology of MOF particles. Our results indicate that while regular vibration patterns generated by SAW can alter particle morphology, hybrid waves and Lamb waves with irregular vibration patterns can synthesise MOF crystals with multi-level pores. The vibration pattern of acoustic waves is shown to be a critical factor in controlling the particle morphology process. These results provide new insights into the precise control of crystal structure and the theory of crystallisation by particle attachment (CPA).

Keywords: High-frequency acoustic wave; MOF; Multi-level pores; The theory of crystallization by particle attachment (CPA).