A Minimal-Chemistry Route to Catalase-Powered Janus Micromotors Using Amine-Functional Polystyrene

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ID: 313363
2026
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Abstract
Abstract Chemically powered micro/nanomotors have been widely investigated, yet practical fabrication and enzyme integration remain challenging. We report a submicron Janus micromotor based on amino-functionalized polystyrene (AG-PS) particles prepared by hemispherical Au sputtering followed by one-step glutaraldehyde-mediated catalase immobilization. In 5% H₂O₂, the micromotors generated O₂ bubbles and exhibited propulsion at ∼178 μm s⁻¹. Catalase loading was estimated as 55 μU per particle, demonstrating a straightforward route to catalase-powered Janus micromotors.
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Authors Isao Shitanda, Yusuke Asano, Nozomi Terai, Tatsuo Aikawa, Yoshinao Hoshi, Masayuki Itagaki
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Journal phytochemistry letters
Year 2026
DOI
10.1093/chemle/upag082
URL
https://doi.org/10.1093/chemle/upag082
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