Controllable synthesis of hierarchical micro/nano structured FePO4 particles under synergistic effects of ultrasound irradiation and impinging stream

Dong, Bin; Qian, Hongliang; Xue, Chenyang; Yang, Xiaogang; Li, Guang; Chen, George Z.

Abstract

© 2020 The Society of Powder Technology Japan Hierarchical micro/nano-structured FePO4 (FP) particles were environmental-friendly and controllable synthesized through synergistic intensification of ultrasound and impinging streams. Nano-scale FP seeds were firstly synthesized via ultrasound irradiation intensified impinging stream reaction (UISR), where the enhanced turbulent micromixing in the impinging streams benefits the nucleation process while the application of ultrasound to the impinging streams further intensifies such micromixing. The ultrasound frequency and power applied were 20 kHz and 600 W. The hierarchical micro/nano-structured FP particles are obtained when taking sufficient reaction time and stirring FP nano-seeds in a continuous stirring tank reactor (CSTR). Effects of the sonochemical pre-treatment, mean residence time and rotation speed on the physical-chemical properties of FP were investigated systematically. The characterization revealed that under the optimum operating condition, the FP particles presented near-spherical hierarchical micro/nano-structure, consisting of nanoscale primary grains. The mechano-chemical effects on the synthesized FP particles during different synthesis process were also studied.

Citation

Dong, B., Qian, H., Xue, C., Yang, X., Li, G., & Chen, G. Z. (2020). Controllable synthesis of hierarchical micro/nano structured FePO4 particles under synergistic effects of ultrasound irradiation and impinging stream. Advanced Powder Technology, 31(10), 4292-4300. https://doi.org/10.1016/j.apt.2020.09.002

• Journal Article Type: Article
• Acceptance Date: Sep 8, 2020
• Online Publication Date: Sep 30, 2020
• Publication Date: Oct 1, 2020
• Deposit Date: Oct 12, 2020
• Publicly Available Date: Oct 1, 2021
• Journal: Advanced Powder Technology
• Print ISSN: 0921-8831
• Electronic ISSN: 1568-5527
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 31
• Issue: 10
• Pages: 4292-4300
• DOI: https://doi.org/10.1016/j.apt.2020.09.002
• Keywords: Mechanics of Materials; General Chemical Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/4939684
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0921883120304210?via%3Dihub