Volume 134, Issue 46 e202211163
Forschungsartikel

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

Hai Huang

Hai Huang

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China

Contribution: Data curation (lead), ​Investigation (lead), Methodology (lead), Software (lead), Visualization (lead), Writing - original draft (lead)

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Jie Li

Jie Li

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China

Contribution: Data curation (equal), Methodology (equal), Writing - original draft (supporting)

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Mengge Yuan

Mengge Yuan

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China

Contribution: Software (supporting), Writing - original draft (supporting)

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Haowei Yang

Haowei Yang

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China

Contribution: Data curation (supporting), Software (supporting), Writing - original draft (supporting)

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Yu Zhao

Yu Zhao

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China

Contribution: Data curation (supporting), Software (supporting), Writing - original draft (supporting)

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Yulong Ying

Corresponding Author

Yulong Ying

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China

Contribution: Conceptualization (lead), Funding acquisition (lead), Project administration (lead), Supervision (lead), Writing - review & editing (lead)

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Sheng Wang

Corresponding Author

Sheng Wang

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China

Contribution: Funding acquisition (supporting), Writing - review & editing (supporting)

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First published: 19 September 2022

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, 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).

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.