Technical Study on Microwave Method for the Preparation of Flower-Like ZnO

Abstract:

Flower-like ZnO was prepared by using ZnCl₂ and NH₃·H₂O as starting materials employing a simple microwave synthesis method. The result shows that flower-like ZnO microcrystal is obtained with 15mL NH₃·H₂O dropped into ZnCl₂ solution and microwave power of 240W for 20 mins simultaneously. Microstructure and surface morphology were investigated in detail by XRD, SEM. The XRD pattern shows, as-prepared ZnO particles are highly crystallized with a wurtzite structure, SEM result demonstrates that flower structure is closely composed of petaloid unit and consists of a series of the bottom thick and top thin nanorods. By researching on PL properties of ZnO, PL spectra shows it has three emission peaks. Then approximate analysis of the causes of every emission peak was made. A simple analysis of growth mechanism was also made in theory finally.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 344-347
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.344
• Online since: August 2013
• Authors: Dong Liu*
• Keywords: Flower-Like, Microwave Synthesis, Morpholoy, PL

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