Title

High-speed graphene@Ag-MnO2 micromotors at low peroxide levels

Document Type

Journal Article

Publisher

Academic Press

Place of Publication

United States

School

School of Engineering

Comments

Originally published as: Ye, H., Kang, J., Ma, G., Sun, H., & Wang, S. (2018). High-speed Graphene@ Ag-MnO 2 Micromotors at Low Peroxide Levels. Journal of colloid and interface science. 528, 271-280. Original article available here.

Abstract

Platinum (Pt) free micro/nanomotors (MNMs) using a low content of fuels are highly desired for many applications. Herein, we demonstrate that cathodic electrofabrication can produce modified MnO2 based microtubes and microrods as highly efficient MNMs in hydrogen peroxide (H2O2) as low as 0.2%. The speed of graphene/Ag-MnO2 micromotors could be smartly regulated using a surfactant and the maximum speed of an individual micromotor exceeds 1.3 mm s−1 in 0.5% H2O2. The propelling force and output power of the micromotors are 3.4 and 10 times as high as those of the best Pt-based micromotors reported. These Ag-MnO2 based micromotors are envisioned to be a great promise for practical applications from biomedical delivery to environmental decontamination.

DOI

10.1016/j.jcis.2018.05.088

Access Rights

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