Journal
CHEMICAL COMMUNICATIONS
Volume 57, Issue 77, Pages 9902-9905Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc03857e
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Funding
- Science Technology and Innovation Program of Shenzhen [JCYJ20190806144807401]
- National Natural Science Foundation of China [11774075]
- Natural Science Foundation of Guangdong Province [2017B030306005]
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Efficient fuels like triethanolamine can power TiO2-Pt micromotors at high speeds, without producing bubbles. Hole scavengers, such as triethanolamine, are effective in photocatalytic micromotors with a heterojunction, specifically n-type semiconductors.
Efficient fuels are critical for designing photocatalytic micromotors with high performance. We discover that 0.5 mM of triethanolamine can power TiO2-Pt motors at 35 mu m s(-1) without producing bubbles, a significant improvement over conventional fuels such as water, H2O2 or hydroquinone. The effectiveness of hole scavengers such as triethanolamine can be generalized to other photocatalytic micromotors containing a heterojunction with an n-type (but not a p-type) semiconductor.
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