Title

Atomic H* mediated fast decontamination of antibiotics by bubble-propelled magnetic iron-manganese oxides core-shell micromotors

Document Type

Journal Article

Publication Title

Applied Catalysis B: Environmental

Volume

314

Publisher

Elsevier

School

School of Science

Funders

Shenzhen Bay Laboratory (SZBL2019062801005) Shenzhen Science and Technology Program (KQTD20170809110344233) Natural Science Foundation of Guangdong Province (No. 2019A1515010762) National Natural Science Foundation of China (51802060) Australian Research Council (DP190103548)

Grant Number

DP190103548

Grant Link

http://purl.org/au-research/grants/arc/DP190103548

Comments

Ye, H., Wang, S., Wang, Y., Guo, P., Wang, L., Zhao, C., ... & Ma, X. (2022). Atomic H* mediated fast decontamination of antibiotics by bubble-propelled magnetic iron-manganese oxides core-shell micromotors. Applied Catalysis B: Environmental, 314, 121484. https://doi.org/10.1016/j.apcatb.2022.121484

Abstract

Wastewater remediation using micro/nanomotors is a hot topic, and MnO2 based materials have become fascinating alternatives to rare noble metal-based micro/nanomotors. Herein, we demonstrate facile and large-scale synthesis of Fe-MnO2 core-shell micromotors for antibiotic pollutant removal. Heat-treatment results in a phase transformation of MnO2 with formation of iron oxides and partially exfoliates the MnO2 nanoplate shell structure to promote mobility. The iron-manganese oxide micromotors exhibit an efficient removal of tetracycline antibiotics via a combination of catalytic degradation and adsorptive bubble separation. For the first time, atomic H* was found to participate in the micromotor-assisted degradation process, resulting in optimal Fenton reaction in neutral conditions with a good decontamination performance. Owing to the merits of abundance, magnetic recovery, facile fabrication, good motion, and environmental friendliness, as well as decontamination performance in a wide pH range, these core-shell micromotors demonstrate a promising candidate in practical wastewater treatment.

DOI

10.1016/j.apcatb.2022.121484

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