High visible-light photocatalytic performance of natural hematite ore composited with ZnO nanomaterials High visible-light photocatalytic performance of natural hematite ore composited with ZnO nanomaterials
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 © IAAM-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.