Large‐Scale Self‐Assembly of MOFs Colloidosomes for Bubble‐Propelled Micromotors and Stirring‐Free Environmental Remediation

The design of MOF‐based micromotors (MOFtors) is still challenging and with limited approaches, especially for the MOF nanoparticles (NPs). Herein, we report a universal and straightforward strategy to efficiently self‐assembly MOF NPs into robust MOFtors for enhanced organic‐ or heavy‐metal‐ion‐contaminants remediation without mechanical stirring. Based on the transient Pickering emulsion method, Fe3O4@NH2‐UiO‐66 (Fe‐UiO) NPs are rapidly self‐assembled into Fe3O4@NH2‐UiO‐66 colloidosomes (Fe‐UiOSomes) on a large scale, and the formation mechanism is systematically studied. The Fe‐UiOSomes‐Pt micromotors through chemical reduction (Micromotor‐C) presented a higher motility of 450±180 μm s−1 in a 5 wt% H2O2 aqueous solution. Finally, the bubble‐propelled Micromotor‐C was employed to efficiently remove dyes and heavy metal ions (94 % for MO and 91 % for CrVI). A universal and straightforward strategy is designed to efficiently self‐assemble MOF nanoparticles into robust MOFtors based on the Pickering emulsion. Such MOFtors are capable of enhanced organic‐ or heavy‐metal‐ion‐contaminants remediation without mechanical stirring.