Angewandte Chemie International Edition · 2022 · 80 citations · 50 references
Natural SciencesChemical EngineeringMaterials ScienceColloid ScienceNanomaterialsNanotechnologyColloidal Self-assemblyInorganic NanoparticlesMetal Oxide NanomaterialsNanoparticle DesignNanoparticle SynthesisSelf-assembly Of NanomaterialsChemical Reduction MechanismsChemical Reduction SynthesisHeavy Metal ContaminantsMechanical StirringNanoparticle FormationNanoparticle Self-assemblyNanoparticle-assisted RemediationNanoparticles
Abstract 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, Fe 3 O 4 @NH 2 ‐UiO‐66 (Fe‐UiO) NPs are rapidly self‐assembled into Fe 3 O 4 @NH 2 ‐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% H 2 O 2 aqueous solution. Finally, the bubble‐propelled Micromotor‐C was employed to efficiently remove dyes and heavy metal ions (94 % for MO and 91 % for Cr VI ).
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Engineering, Chemical Engineering, Environmental Engineering +11
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