Bimetallic coatings synergistically enhance the speeds of photocatalytic TiO2 micromotors. Issue 34 (29th March 2020)

• Record Type: Journal Article
• Authors: Xiao, Zuyao; Chen, Jingyuan; Duan, Shifang; Lv, Xianglong; Wang, Jizhuang; Ma, Xing; Tang, Jinyao; Wang, Wei
• Is Part Of: Chemical communications. Volume 56:Issue 34(2020)
• Page Start: 4728
• Page End: 4731
• Publication Date: 2020-03-29
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc00212g
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A bimetallic cap containing sputtered silver is a better catalyst that significantly improves the performance of catalytically powered 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.