TY - JOUR
T1 - Magnetically steerable iron oxides-manganese dioxide core–shell micromotors for organic and microplastic removals
AU - Ye, Heng
AU - Wang, Yong
AU - Liu, Xiaojia
AU - Xu, Dandan
AU - Yuan, Hao
AU - Sun, Hongqi
AU - Wang, Shaobin
AU - Ma, Xing
N1 - Funding Information:
The authors thank the financial support from the National Natural Science Foundation of China (51802060), Shenzhen Science and Technology Program (KQTD20170809110344233), Shenzhen Bay Laboratory (SZBL2019062801005), and Natural Science Foundation of Guangdong Province (No. 2019A1515010762). Partial support from the Australian Research Council (DP190103548) is also acknowledged.
Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2021/4/15
Y1 - 2021/4/15
N2 - Because of micro/nanoscale manipulation and task-performing capability, micro/nanomotors (MNMs) have attracted lots of research interests for potential applications in biomedical and environmental applications. Owing to the low-cost, good motion behavior, and environmental friendliness, various low-cost metal oxides based MNMs become promising alternatives to the precious metal based MNMs, in particular for environmental remediation applications. Hereby, we demonstrate the facile and scalable fabrication of two types of bubble-propelled iron oxides-MnO2 core–shell micromotors (Fe3O4-MnO2 and Fe2O3-MnO2) for pollutant removal. The Fe2O3-MnO2 micromotor exhibits efficient removals of both aqueous organics and suspended microplastics via the synergy of catalytic degradation, surface adsorption, and adsorptive bubbles separations mechanisms. The adsorptive bubbles separation achieved more than 10% removal of the suspended microplastics from the polluted water in 2 h. We clarified the major contributions of different remediation mechanisms in pollutants removals, and the findings may be beneficial to a wide range of environmental applications of MNMs.
AB - Because of micro/nanoscale manipulation and task-performing capability, micro/nanomotors (MNMs) have attracted lots of research interests for potential applications in biomedical and environmental applications. Owing to the low-cost, good motion behavior, and environmental friendliness, various low-cost metal oxides based MNMs become promising alternatives to the precious metal based MNMs, in particular for environmental remediation applications. Hereby, we demonstrate the facile and scalable fabrication of two types of bubble-propelled iron oxides-MnO2 core–shell micromotors (Fe3O4-MnO2 and Fe2O3-MnO2) for pollutant removal. The Fe2O3-MnO2 micromotor exhibits efficient removals of both aqueous organics and suspended microplastics via the synergy of catalytic degradation, surface adsorption, and adsorptive bubbles separations mechanisms. The adsorptive bubbles separation achieved more than 10% removal of the suspended microplastics from the polluted water in 2 h. We clarified the major contributions of different remediation mechanisms in pollutants removals, and the findings may be beneficial to a wide range of environmental applications of MNMs.
KW - Adsorptive bubbles separation
KW - Catalytic degradation
KW - Magnetic core–shell structure
KW - Microplastics separation
KW - MnO micromotors
UR - http://www.scopus.com/inward/record.url?scp=85099001178&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2020.12.097
DO - 10.1016/j.jcis.2020.12.097
M3 - Article
C2 - 33429347
AN - SCOPUS:85099001178
SN - 0021-9797
VL - 588
SP - 510
EP - 521
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -