Issue 12, 2015
From the journal:

Journal of Materials Chemistry A

Ultraviolet photocatalytic degradation of methyl orange by nanostructured TiO2/ZnO heterojunctions

Ruhua Zha,a   Reddeppa Nadimicherlaa  and  Xin Guo*a  

* Corresponding authors

a Laboratory of Solid State Ionics, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
E-mail: xguo@hust.edu.cn
Fax: +86-27-87559804
Tel: +86-27-87559804

Abstract

Nanostructured TiO2/ZnO heterojunctions with the morphologies of hedgehogs and fan blades were synthesized by a solvothermal method and characterized by means of XRD, SEM, TEM, BET, FT-IR, Raman, XPS, UV-vis and PL diffuse reflection spectroscopy. The photocatalytic activities of both TiO2/ZnO hedgehogs and fan blades for the degradation of methyl orange (MO) were explored under UV light; the hedgehogs exhibited the best photocatalytic activity (97% MO degradation within 30 min) owing to the hierarchical nanostructure with a large surface area. The degradation mechanism is discussed based on the band structure. Both heterojunctions are very promising for the degradation of MO from organic dyestuff in engineering practice.

Graphical abstract: Ultraviolet photocatalytic degradation of methyl orange by nanostructured TiO2/ZnO heterojunctions

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Article information

DOI
https://doi.org/10.1039/C5TA00764J
Article type
Paper
Submitted
30 Jan 2015
Accepted
23 Feb 2015
First published
23 Feb 2015

J. Mater. Chem. A, 2015,3, 6565-6574

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Ultraviolet photocatalytic degradation of methyl orange by nanostructured TiO2/ZnO heterojunctions

R. Zha, R. Nadimicherla and X. Guo, J. Mater. Chem. A, 2015, 3, 6565 DOI: 10.1039/C5TA00764J

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