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Synthesis and their photocatalytic properties of Ni-doped ZnO hollow microspheres

Published online by Cambridge University Press:  19 April 2016

Yuanyou Wang*
Affiliation:
Jiangsu Key Laboratory of Environmental Material and Environmental Engineering, School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China; Department of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou, 225127, China; and School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Tianqing Liu
Affiliation:
Jiangsu Key Laboratory of Environmental Material and Environmental Engineering, School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
Qingli Huang
Affiliation:
Testing Center, Yangzhou University, Yangzhou, 225009, China
Changle Wu
Affiliation:
Testing Center, Yangzhou University, Yangzhou, 225009, China
Dan Shan
Affiliation:
School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Ni-doped ZnO hollow microspheres were fabricated by calcining the mixture of zinc and nickel citrate precursors at 500 °C for 2 h. The structure, composition, Barrett–Emmett–Teller specific surface area, and optical properties of Ni-doped ZnO samples were characterized by x-ray diffraction, x-ray photoelectron spectroscopy, wave length dispersive x-ray fluorescence spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, N2 adsorption–desorption isotherms, and ultraviolet (UV)-visible diffuse reflectance spectroscopy. The photocatalytic results demonstrated that the as-synthesized Ni-doped ZnO microcrystals possessed much higher photocatalytic activity than pure ZnO in the decomposition of methylene blue under UV-light irradiation. The present work suggests that Ni-doped ZnO hollow microspheres can be applied as an efficient photocatalyst for water polluted by some chemically stable azo dyes.

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Articles
Copyright
Copyright © Materials Research Society 2016 

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References

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