Issue 34, 2020

Bimetallic coatings synergistically enhance the speeds of photocatalytic TiO2 micromotors

Abstract

The design of powerful, more biocompatible microrobots calls for faster catalytic reactions. Here we demonstrate a two-fold increase in the speed of photocatalytic TiO2–metal Janus micromotors via a Au/Ag bi-layered coating. Electrochemical measurements show that such a bimetallic coating is a better photocatalyst than either metal alone. Similarly, an additional sputtered Ag layer could also significantly increase the speed of Pt–PS or TiO2–Pt micromotors, suggesting that applying bimetallic coatings is a generalizable strategy in the design of faster catalytic micromotors.

Graphical abstract: Bimetallic coatings synergistically enhance the speeds of photocatalytic TiO2 micromotors

Supplementary files

Article information

Article type
Communication
Submitted
09 Jan 2020
Accepted
02 Mar 2020
First published
02 Mar 2020

Chem. Commun., 2020,56, 4728-4731

Bimetallic coatings synergistically enhance the speeds of photocatalytic TiO2 micromotors

Z. Xiao, J. Chen, S. Duan, X. Lv, J. Wang, X. Ma, J. Tang and W. Wang, Chem. Commun., 2020, 56, 4728 DOI: 10.1039/D0CC00212G

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