Volume 134, Issue 7 e202113801
Zuschrift

2D Active Nanobots Based on Soft Nanoarchitectonics Powered by an Ultralow Fuel Concentration

Dr. Motilal Mathesh

Corresponding Author

Dr. Motilal Mathesh

School of Life and Environmental Sciences, Deakin University, 75 Pigdons Road, Waurn Ponds, 3216 Australia

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Elisha Bhattarai

Elisha Bhattarai

School of Life and Environmental Sciences, Deakin University, 75 Pigdons Road, Waurn Ponds, 3216 Australia

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Prof. Wenrong Yang

Corresponding Author

Prof. Wenrong Yang

School of Life and Environmental Sciences, Deakin University, 75 Pigdons Road, Waurn Ponds, 3216 Australia

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First published: 16 December 2021
Citations: 2

Abstract

Enzyme catalysis to power micro/nanomotors has received tremendous attention because of the vast potential in applications ranging from biomedicine to environmental remediation. However, the current design is mainly based on a complex three-dimensional (3D) architecture, with limited accessible surface areas for the catalytic sites, and thus requires a higher fuel concentration to achieve active motion. Herein we report for the first time an enzyme-powered 2D nanobot, which was designed by a facile strategy based on soft nanoarchitectonics for active motion at an ultralow fuel concentration (0.003 % H2O2). The 2D nanobots exhibited efficient positive chemotactic behavior and the ability to swim against gravity by virtue of solutal buoyancy. As a proof-of-concept, the 2D nanobots showed an excellent capability for “on-the-fly” removal of methylene blue (MB) dye with an efficiency of 85 %.

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