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Multi-Component Mesocrystalline Nanoparticles with Enhanced Photocatalytic Activity

Authors
Ko, Min JunPark, Bum ChulKoo, Thomas MyeongseokJeon, Yoo SangKim, Myeong SooKim, Young Keun
Issue Date
12월-2020
Publisher
WILEY-V C H VERLAG GMBH
Keywords
catalytic behavior; magnetic separation; mesocrystalline nanoparticles; photo& #8208; Fenton; visible light absorption
Citation
SMALL, v.16, no.51
Indexed
SCIE
SCOPUS
Journal Title
SMALL
Volume
16
Number
51
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/51404
DOI
10.1002/smll.202004696
ISSN
1613-6810
Abstract
Mesocrystals, consisting of small subunits, have gained research interests owing to their ability to simultaneously modify material-specific properties and interactions among subunits. However, despite these unique characteristics, most mesocrystals are composed of a single material, and there is a disjunction between academic discovery and practical application. In this study, the synthesis of multi-component mesocrystalline nanoparticles composed of Fe3O4, ZnFe2O4, and ZnO subunits using a polymerization induced heterogeneous nucleation method is reported. The structure has small ZnFe2O4 and ZnO nanocrystals covering the Fe3O4 crystallites. It exhibits not only magnetic and catalytic properties determined by the size of each subunit nanocrystal, but also enhances photocatalytic and colloidal properties that originates because of its crowded arrangement. The magnetically recoverable catalysts exhibit remarkable photodegradation of organic molecules under the irradiation of visible light for 1 h; thus, improving its applicability in purifying a large amount of wastewater during the daytime.
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