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Continuous synthesis of boron-doped carbon nitride supported silver nanoparticles in an ultrasound-assisted coiled flow inverter microreactor

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Abstract

The combination of ultrasound and microreactors for the synthesis of nanomaterials is becoming increasingly popular, but effectively altering the ultrasonic field at the microscale to control the crystallization process remains a challenge. Herein, we investigated numerically and experimentally the effects of the ultrasonic field on the synthesis of boron-doped carbon nitride supported silver nanoparticles based on our homemade ultrasound-assisted coiled flow inverter microreactor (UCFIR). Specifically, the ultrasound promotes the radial mixing in the coiled flow inverter microreactor, even under low Reynolds number 10, resulting in better control over the crystallization process. The effects of key parameters, such as ultrasonic field distribution and ultrasonic power, on the particle size and size distribution of Ag/B-g-C3N4 have been demonstrated. The results show that when the ultrasound transducer is positioned on the ‘abc’ sides, the Ag/B-g-C3N4 with small and uniform Ag particles (4.12 ± 1.12 nm) can be obtained. As ultrasound power increased (0–176 W) and residence time decreased (17.5–140 s), the size of silver nanoparticles decreased, and their distribution narrowed.

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The additional data that support the findings of this study are available from the corresponding author upon a reasonable request.

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Acknowledgements

The authors are grateful for the financial support from the National Natural Science Foundation of China (Grant no. U22A20408), Zhejiang Provincial Key R&D Program (Grant no. 2022C01179) and Institute of Zhejiang University-Quzhou S&T Planed Projects (IZQ2021KJ2022 IZQ2022KJ1014) for this work.

Funding

National Natural Science Foundation of China,U22A20408, Zhejiang Provincial Key R&D Program, 2022C01179. Institute of Zhejiang University-Quzhou S&T Planed Projects (IZQ2021KJ2022 IZQ2022KJ1014).

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  1. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China

    Yu-tian Tao, Ke-Jun Wu & Chao-Hong He

  2. Institute of Zhejiang University-Quzhou, Quzhou, 324000, China

    Yu-tian Tao, Ke-Jun Wu & Chao-Hong He

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Tao, Yt., Wu, KJ. & He, CH. Continuous synthesis of boron-doped carbon nitride supported silver nanoparticles in an ultrasound-assisted coiled flow inverter microreactor. J Flow Chem 14, 177–196 (2024). https://doi.org/10.1007/s41981-023-00300-1

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