Synthesis and Characterization of Ba Defective ZnO Nano-Particle

M. El-Hofy; A. Salama

doi:10.4028/www.scientific.net/DDF.280-281.1

Paper Titles

Synthesis and Characterization of Ba Defective ZnO Nano-Particle
p.1

Diffusion Formation of Silicide Phases in Ni/Si(001) Nanodimensional Film System
p.9

Investigations of the EPR Parameters and Local Structure for one Cu²⁺ Center in CdS
p.15

Slow Positron Annihilation in Ion-Implanted Silicon
p.21

Semi-Empirical Parameterization of Interatomic Interactions and Kinetics of the Atomic Ordering in Ni-Fe-C Permalloys and Elinvars
p.29

Formation of Point Defects in Dilute FCC Alloys
p.79

Mechanical Testing of Diffusion Bonded Metallic Hollow Sphere Structure (MHSS)
p.85

Towards a Correlation between High-Temperature Creep and Volume Diffusion for Equiatomic NiTi Alloys
p.97

Structural Characterisation of Diffusion-Bonded Hollow Sphere Structures
p.105

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Synthesis and Characterization of Ba Defective ZnO Nano-Particle

Abstract:

ZnO-BaO particles (4-10) nm have been synthesized by applying 40 KHz ultrasonic wave simultaneously with the co-precipitation process of Zn and Ba oxalate at 50 0C. DTA curves of the co-precipitate were carried out and the decomposition temperature was determined. Mixed oxide obtained from thermal decomposition of Zn2 Ba (C2O4)2.2H2O in air has been investigated by TEM, XRD, IR and UV-Vis measurements. The results revealed that the obtained particle consists of a core of highly deformed Ba contaminated ZnO nano-crystals. The ZnO crystalline core is coated by Ba rich amorphous layer which prevents its growth. Decreasing concentration of ZnCl2 in the precipitation solution from 0.1M to .05 M leads to decrease the size of the particle from (10-20) nm to(4-10) nm, in average, increases UV cut-off, the cut-off tail and rounded of the shape of the particle.