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Microwave - assisted hydrothermal synthesis and characterization of hierarchical structured ZnO nanorods

H. LIU1,* , D. YANG1, H. SUN1, Z. ZHU1

Affiliation

  1. School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, P. R. China

Abstract

Hierarchical structured ZnO nanorods with the whole diameter about ~400 nm and the length of ~1μm have been synthesized by a simple microwave-assisted hydrothermal method. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectrometer (XPS) was used for characterization of as-prepared products. On the surface of the as-prepared ZnO nanorods, thornlike nanostructures with the diameter and length of 20~100 nm and ~20 nm are developed in a large density. The possible growth mechanism of this hierarchical structured nanorod may be attributed to the formation of the ZnO nanorods with the help of the linear template agent and the following nucleation and growth of the thornlike nanostructures in the defect sites of the ZnO nanorods. The photocatalytic experiment results shown that the as-prepared ZnO hierarchial structured nanorods exhibit excellent photocatalytic activity because of their special morphology and structure..

Keywords

Nanostructures materials; Oxide materials; Chemical synthesis, ZnO, TEM, XRD, SEM.

Submitted at: June 7, 2010
Accepted at: Oct. 14, 2010

Citation

H. LIU, D. YANG, H. SUN, Z. ZHU, Microwave - assisted hydrothermal synthesis and characterization of hierarchical structured ZnO nanorods, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 10, pp. 2063-2068 (2010)