High visible-light photocatalytic performance of natural hematite ore composited with ZnO nanomaterials
Xin X. Yu1, Fang Z. Dong1, Bao Dong1, Liang Liu1, Yan Wu1, 2*
1Faculty of Materials Science and Chemistry, China University of Geosciences (Wuhan), Wuhan, 430074, P. R. China
2Engineering Research Center of Nano-Geo Materials of Ministry of Education China University of Geosciences, Wuhan, 430074, China
Adv. Mater. Lett., 2017, 8 (4), pp 393-397
Publication Date (Web): Mar 14, 2017
Copyright © 2019 VBRI Press
Natural hematite ore is used as a novel material for visible photocatalyst. The hematite was composited with needle-shaped ZnO via a hydrothermal approach. This hematite-based system exhibits excellent photodegradation for rhodamine (RhB) within 30 min when the hematite is hybridized with wurtzite -structured ZnO under visible light irradiation. The formation of a hybrid hetero-junction was shown by transmission electron microscope. The photocatalytic activity of the hetero-junction was evaluated by the photodegradation of RhB dye. The high photocatalytic activity observed under visible light is discussed on basis of the coupling of the hybrid hetero-junction band structure.
Natural hematite, needle-shaped ZnO, hybrid hetero-structure, photocatalyst.