Preparation of transition-metal-doped ZnO nanophotocatalysts and their performance on photocatalytic degradation of antibiotic wastewater

ABSTRACTIn this work, we report on the material properties of ZnO doped with Mn, Co, and Fe grown by a modified melt growth technique. X-ray diffraction measurements show that transition metals can be incorporated on Zn sites; an increase in the lattice parameter is apparent with increasing doping level. UV-visible transmission and reflectance measurements have also been performed. Absorption bands in the visible regime are distinctive to the individual transition metal dopants. A noticeable shift in the optical band edge has been observed from these Mn/Co/Fe-doped ZnO crystals in comparison with the undoped material. ZnO may also provide a suitable platform for the incorporation of transition metal elements through high temperature near equilibrium growth processes; however, further work is required in order to employ these materials for spintronic applications.

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Structural and magnetic properties of transition metal doped ZnO films

Thin Solid Films ◽

10.1016/j.tsf.2009.09.047 ◽

2010 ◽

Vol 518 (8) ◽

pp. 2152-2156 ◽

Cited By ~ 13

Author(s):

C.G. Jin ◽

Y.Gao ◽

X.M. Wu ◽

M.L. Cui ◽

L.J. Zhuge ◽

...

Keyword(s):

Magnetic Properties ◽

Transition Metal ◽

Zno Films ◽

Structural And Magnetic Properties ◽

Doped Zno ◽

Metal Doped

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Transition Metal Doped ZnO

Handbook of Spintronic Semiconductors ◽

10.1201/9780429065507-2 ◽

2019 ◽

pp. 81-102

Author(s):

David Norton ◽

Stephen J. Pearton ◽

Mathew P. Ivill ◽

Fan Ren

Keyword(s):

Transition Metal ◽

Doped Zno ◽

Metal Doped

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Transition Metal Doped ZnO

Handbook of Spintronic Semiconductors ◽

10.1201/b11120-3 ◽

2010 ◽

pp. 81-102

Author(s):

David Norton ◽

Stephen Pearton ◽

Mathew Ivill ◽

Fan Ren

Keyword(s):

Transition Metal ◽

Doped Zno ◽

Metal Doped

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Transition Metal-Doped ZnO: A Comparison of Optical, Magnetic, and Structural Behavior of Bulk and Thin Films

MRS Proceedings ◽

10.1557/proc-0957-k04-10 ◽

2006 ◽

Vol 957 ◽

Cited By ~ 1

Author(s):

William E. Fenwick ◽

Matthew H. Kane ◽

Zaili Fang ◽

Tahir Zaidi ◽

Nola Li ◽

...

Keyword(s):

Thin Films ◽

Transition Metal ◽

Optical Transmission ◽

Magnetic Hysteresis ◽

Structural Quality ◽

Bulk Crystals ◽

Transmission Measurements ◽

Doped Zno ◽

Metal Doped ◽

Metal Incorporation

ABSTRACTTransition metal-doped ZnO bulk crystals and thin films have been investigated to determine the effects of transition metal incorporation on optical, magnetic, and structural properties of ZnO. A modified melt growth technique was used to grow bulk Zn1-xMnxO, Zn1-xCoxO, and Zn1-xFexO. Optical transmission measurements show an apparent shift in absorption edge with increasing transition metal incorporation. Raman spectroscopy also shows increasing lattice disorder with increasing transition metal concentration. ZnO thin films doped with Ni, Co, and Gd were grown by metalorganic chemical vapor deposition (MOCVD). While the Co-doped thin films showed antiferromagnetic behavior, magnetic hysteresis was observed in the Ni-doped and Gd-doped thin films. Structural quality was verified with X-ray diffraction (XRD), and optical properties were investigated using room temperature photoluminescence (PL) and optical transmission measurements. Properties of ZnO:TM bulk crystals and thin films are compared and used to discuss possible origins of ferromagnetism in these materials.

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