Web Release Date: February 5,
Facile Synthesis of Hierarchical ZnO:Tb3+ Nanorod Bundles and Their Optical and Magnetic Properties
and
MOE of Key Laboratory of Bioinorganic and Synthetic Chemistry/School of Chemistry and Chemical Engineering/Institute of Optoelectronic and Functional Composite Materials, Sun Yat-Sen University, Guangzhou 510275, China, and State Key Lab of Rare Earth Materials Chemistry and Applications, Beijing 100871, China
Received: October 31, 2007
In Final Form: November 30, 2007
Abstract:
Here we explored a facile electrodeposition route to prepare large-area ZnO:Tb3+ nanorod bundles in a solution
of Zn(NO3)2 + Tb(NO3)3 + CH3COONH4 at the temperature of 70 
C. The formation process of ZnO:Tb3+
nanorod bundles was investigated. When the concentration of CH3COONH4 was increased, the density of the
nanorod bundles was largely increased, and the number of nanorod in the bundles also increased. The prepared
ZnO:Tb3+ nanorod bundles were characterized by SEM, EDS, TEM, HRTEM, SAED, XRD, and XPS.
According to the data of the absorption spectra, the optical band gaps (Eg) of ZnO:Tb3+ were estimated to be
3.13 eV. The luminescence of the prepared ZnO:Tb3+ nanorod bundles indicates these deposits have a high
optical property. The magnetic measurements show the magnetic properties of ZnO:Tb3+ nanorod bundles
are obviously affected by the temperature, and the blocking temperature is about 225 K, above which the
deposits are superparamagnetic.
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