Journal of Nanomaterials & Molecular NanotechnologyISSN: 2324-8777

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Research Article, J Nanomater Mol Nanotechnol Vol: 3 Issue: 4

Hierarchical ZnO Nanostructures Derived from Zn-Al Layered Double Hydroxides and their Photocatalytic Activity

Gangqiang Wan1, Yaojun Zhang1, Dongxiang Li1*, Xin Qian1, Jie Xu1 and Wanguo Hou2*
1State Key Laboratory Base of Eco-chemical Engineering, Lab of Colloids and Functional Nanostructures, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
2Key Laboratory of Colloid and Interface Chemistry (Ministry of Education),Shandong University, Jinan 250100, China
Corresponding authors : Prof. Dr. Dongxiang Li
College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Zhengzhou Road No. 53, Qingdao 266042, China
Tel: +86 532 84023654
E-mail: [email protected]
Prof. Dr. Wanguo Hou
Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, China
E-mail: [email protected]
Received: August 14, 2014 Accepted: October 13, 2014 Published: October 18, 2014
Citation: Wan G, Zhang Y, Li D, Qian X, Xu J, et al. (2014) Hierarchical ZnO Nanostructures Derived from Zn-Al Layered Double Hydroxides and their Photocatalytic Activity. J Nanomater Mol Nanotechnol 3:4. doi:10.4172/2324-8777.1000152

Abstract

Hierarchical ZnO Nanostructures Derived from Zn-Al Layered Double Hydroxides and their Photocatalytic Activity

In this work, Zn-Al layered double hydroxide (LDH) nanocrystals were used as a single precursor to fabricate ZnO/Zn-Al LDH nanocomposite based on the dissolution of aluminium hydroxide in NaOH. The newly formed ZnO nanorods vertically align on two sides of thinned LDH nanosheet to form “sandwich-like” nanostructure. The following calcination of these ZnO/Zn-Al LDH nanostructures at moderate temperature provided ZnO-Al2O3 mixed metal oxide nanocomposites. Both of ZnO/Zn-Al LDH and ZnO-Al2O3 samples were investigated as photocatalysts and showed selective activity for the photolysis of different dyes under low-Watt UV irradiation. Such photocatalytic mixed metal hydroxide/oxide nanocomposites should facilitate the decontamination of industrial wastewater and be helpful to environmental remediation.

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