Bimetallic coatings synergistically enhance the speeds of photocatalytic TiO2 micromotors
| Autor: | Zuyao Xiao, Wei Wang, Xing Ma, Jinyao Tang, Xianglong Lv, Duan Shifang, Jingyuan Chen, Jizhuang Wang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Biocompatibility Metals and Alloys Nanotechnology General Chemistry engineering.material Electrochemistry Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Coating Titanium dioxide Materials Chemistry Ceramics and Composites Photocatalysis engineering Layer (electronics) Bimetallic strip |
| Zdroj: | Chemical Communications. 56:4728-4731 |
| ISSN: | 1364-548X 1359-7345 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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