Integration of BiOI nanosheets into bubble-propelled micromotors for efficient water purification

• BiOI-based micromotors are fabricated using the template-assisted electrodeposition method. 2D BiOI nanosheets endow with visible-light-excited photocatalytic activity. Efficient removal of organic pollutants can be achieved on basis on-the-fly catalytic chemistry. Integration layered materials into is great interest for scientists since new characteristics or enhance their intrinsic properties. In this work, we develop self-propelled (i.e., rGO/ZnO/BiOI/Co-Pi/Pt micromotors) tubular and arc geometric shapes via electrochemical deposition BiOI, constructed by nanosheets, a photocatalyst. The elaborately designed heterostructure able to promote charge separation transport capacity BiOI. Each micromotor not only exhibit vigorous stirring-like movement self-propulsion but also lead enhanced dynamics dye degradation. Using Rhodamine 6G as pollutant model, degrade 94% molecules within 30 min under visible light illumination while degradation efficiency 5.2% when in dark. mechanism mainly based generation reactive oxygen species during photocatalysis process. synergistic effect among i) “on-the-fly” chemistry, ii) collective behavior iii) photocatalyst synthetic nanoflake morphology well-designed heterojunction make an efficient active platform water purification.