Issue 38, 2023

Bubble-propelled micromotors for ammonia generation


Micromotors have emerged as promising tools for environmental remediation, thanks to their ability to autonomously navigate and perform specific tasks at the microscale. In this study, we present the development of MnO2 tubular micromotors modified with laccase for enhanced oxidation of organic pollutants by providing an additional oxidative catalytic pathway for pollutant removal. These modified micromotors exhibit efficient ammonia generation through the catalytic decomposition of urea, suggesting their potential application in the field of green energy generation. Compared to bare micromotors, the MnO2 micromotors modified with laccase exhibit a 20% increase in rhodamine B degradation. Moreover, the generation of ammonia increased from 2 to 31 ppm in only 15 min, evidencing their high catalytic activity. To enable precise tracking of the micromotors and measurement of their speed, a deep-learning-based tracking system was developed. Overall, this work expands the potential applicability of bio-catalytic tubular micromotors in the energy field.

Graphical abstract: Bubble-propelled micromotors for ammonia generation

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Article information

Article type
31 Jul 2023
17 Sep 2023
First published
18 Sep 2023
This article is Open Access
Creative Commons BY license

Nanoscale, 2023,15, 15785-15793

Bubble-propelled micromotors for ammonia generation

R. Ferrer Campos, H. Bachimanchi, G. Volpe and K. Villa, Nanoscale, 2023, 15, 15785 DOI: 10.1039/D3NR03804A

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