High-speed graphene@Ag-MnO2 micromotors at low peroxide levels
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.
Document Type
Journal Article
Date of Publication
2018
Location of the Work
United States
Publication Title
Journal of Colloid and Interface Science
Publisher
Academic Press
School
School of Engineering
RAS ID
28311
Copyright
subscription content
Comments
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. Available here.