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One body, two hands: Photocatalytic Function and Fenton Effect Integrated Light Driven Micromotors for Pollutant Degradation

Abstract

Threats of water pollution represent a serious global concern and require rapid and efficient neutralization methods. Herein, we report a novel two-in-one light-driven micromotors, i.e., light-driven TiO2-Fe Janus micromotors with both photocatalysis and photo-Fenton process, for efficiently degrading organic pollutants in contaminative water. The TiO2-Fe micromotors moved rapidly by utilizing the photocatalytic H2O2 decomposition over TiO2 under UV irradiation, as well as generate highly reactive oxygen species responsible for the in-situ degradation of the organic pollutants into nonharmful products. Notably, such coupling of photocatalysis generated on the TiO2 sides and photo-Fenton process generated on the Fe sides, along with the rapid movement of these catalytic Janus micromotors, result in a synergetic effect which can greatly enhance the degradation of organic pollutants. The degradation efficiency of the TiO2-Fe micromotors is 52 times over that of only Fenton effects, and it is further improved by 40% compare to photocatalytic degradation alone. Considering the excellent advantages of the high efficiency, simple structure, reusability and as well as the bubble-driven property, the new “on-the-fly” TiO2-Fe micromotors-based method have a promising potential for future water cleaning and waste-water treatments.

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Supplementary files

Publication details

The article was received on 20 May 2019, accepted on 10 Aug 2019 and first published on 14 Aug 2019


Article type: Paper
DOI: 10.1039/C9NR04295D
Nanoscale, 2019, Accepted Manuscript

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    One body, two hands: Photocatalytic Function and Fenton Effect Integrated Light Driven Micromotors for Pollutant Degradation

    J. Wang, R. Dong, Q. Yang, H. Wu, Z. Bi, Q. Liang, Q. Wang, C. Wang, Y. Mei and Y. Cai, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR04295D

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