Thesis on zno nanoparticles

CuO nanopowder with the particle diameter of 20 nm has been synthesised by one step solid state reaction using CuCl2 2H2O with NaOH at room temperature [ 9 ]. Any further distribution of this work must maintain attribution to the author s and the title of the work, journal citation and DOI.

Results 3. The structural, morphological and optical properties of ZnO nanoparticles are studied. The presence of a broad and sharp absorption band at around cm-1 in the FTIR spectrum further confirmed the existence of ZnO phase.

Nanocrystallines Cu-doped ZnO by the substitution in Zn site with a high crystallization degree of hexagonal wurtzite structure were obtained.

Research papers on zno nanoparticles

In this work ZnO nanoparticles are synthesized by sol-gel method using different routes with different stirring temperatures. Introduction Cu-doped zinc oxide nanoparticles or copper—zinc—oxide nanocomposites have been intensively studied because it has considerable potential for applying to wide range of applications, such as optical coatings, light-emitting diodes, laser diodes and catalysts. Various techniques have been used to synthesize Cu-doped zinc oxide nanoparticles and copper—zinc—oxide nanocomposites by many researches such as hydrothermal, co-precipitation, sono-chemical and ball milling. The initial concentration of zinc acetate was controlled and this process is based on the decomposition of zinc acetate and sodium hydroxide NaOH in a mixture solution of ethanol and EG. Results 3. The solid state reaction is conducted in air at room temperature without either surfactant or calcination to result the small particle and the synthesis time is within 15 min. Masters thesis, Universiti Putra Malaysia. The physicochemical properties of resulting ZnO nanoparticles can be controlled by the synthesis route, method of preparation and parameters related to condition processing. FESEM images display the semi-spherical shaped of the synthesized nanoparticles and emphasise that the nanoparticles synthesized by Zinc Acetate are finer and more homogenous than those synthesized with Zinc Nitrate. Vidyasagar et al [ 13 ] employed solid state reaction to synthesize Cu-doped zinc oxide nanoparticles by using acid salts of ZnCl2, CuCl2 and NaOH reagents with polyethylene glycol

Abstract Transformation into nanoscale from bulk structures involves an outstanding modification in the properties of materials.

Download figure:. Material The starting ZnO, CuO and acetic acid were of industrial grade and used as received without further purification. The solid state reaction is conducted in air at room temperature without either surfactant or calcination to result the small particle and the synthesis time is within 15 min.

The initial concentration of zinc acetate was controlled and this process is based on the decomposition of zinc acetate and sodium hydroxide NaOH in a mixture solution of ethanol and EG.

All those factors can be controlled by modifying the nanostructures and most of obtained nanostructure materials obey the specific synthesis method and conditions.

Sem analysis of zno nanoparticles

Experimental 2. The solid state reaction is conducted in air at room temperature without either surfactant or calcination to result the small particle and the synthesis time is within 15 min. Item Type:. Masters thesis, Universiti Putra Malaysia. The physicochemical properties of resulting ZnO nanoparticles can be controlled by the synthesis route, method of preparation and parameters related to condition processing. Herein, this work, we develop the solid state method by improving the high homogeneity of copper and zinc in acetate salt and preparing the starting acetate salt precursor from CuO and ZnO at different ratios to obtain high homogeneity of copper and zinc in acetate salt. The solid state synthesis of nanoparticle were achieved for undoped CuO [ 9 ] and ZnO [ 11 ] while Cu-doped ZnO nanoparticle was obtained by assistance of polyethylene glycol surfactant reagent [ 13 ].

Vidyasagar et al [ 13 ] employed solid state reaction to synthesize Cu-doped zinc oxide nanoparticles by using acid salts of ZnCl2, CuCl2 and NaOH reagents with polyethylene glycol Highly crystallized and pure phase ZnO nanoparticles were successfully synthesized by thermal treatment at to oC for 4 hours.

The effect of initial copper and zinc molar ratios on the product samples was investigated and discussed.

synthesis and characterization of zno nanoparticles thesis
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