title: Visible-Light-Driven BiOI-Based Janus Micromotor in Pure Water.
abstract: Light-driven synthetic micro-/nanomotors have attracted considerable attention due to their potential applications and unique performances such as remote motion control and adjustable velocity. Utilizing harmless and renewable visible light to supply energy for micro-/nanomotors in water represents a great challenge. In view of the outstanding photocatalytic performance of bismuth oxyiodide (BiOI), visible-light-driven BiOI-based Janus micromotors have been developed, which can be activated by a broad spectrum of light, including blue and green light. Such BiOI-based Janus micromotors can be propelled by photocatalytic reactions in pure water under environmentally friendly visible light without the addition of any other chemical fuels. The remote control of photocatalytic propulsion by modulating the power of visible light is characterized by velocity and mean-square displacement analysis of optical video recordings. In addition, the self-electrophoresis mechanism has been confirmed for such visible-light-driven BiOI-based Janus micromotors by demonstrating the effects of various coated layers (e.g., Al2O3, Pt, and Au) on the velocity of motors. The successful demonstration of visible-light-driven Janus micromotors holds a great promise for future biomedical and environmental applications.
authors.affiliation: School of Chemistry and Environment, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University , Guangzhou 510006, China.
authors.forename: Renfeng
authors.initials: R
authors.lastname: Dong
authors.affiliation: School of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Hu
authors.affiliation: School of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China.
authors.forename: Yefei
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Department of Electrical Engineering & Computer Sciences, and Berkeley Sensor and Actuator Center, University of California , Berkeley, California 94720, United States.
authors.forename: Wei
authors.identifier: 0000-0002-8503-4562
authors.initials: W
authors.lastname: Gao
authors.affiliation: School of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China.
authors.forename: Biye
authors.identifier: 0000-0003-0131-8750
authors.initials: B
authors.lastname: Ren
authors.affiliation: School of Chemistry and Environment, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University , Guangzhou 510006, China.
authors.forename: Qinglong
authors.initials: Q
authors.lastname: Wang
authors.affiliation: School of Chemistry and Environment, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University , Guangzhou 510006, China.
authors.forename: Yuepeng
authors.identifier: 0000-0003-4028-9358
authors.initials: Y
authors.lastname: Cai