Effect of changing different preparation conditions on physical properties of zinc oxide nanoparticles prepared by LP-PLA technique
Dissertant
Thesis advisor
University
University of Technology
Faculty
-
Department
Applied Sciences Department
University Country
Iraq
Degree
Master
Degree Date
2012
English Abstract
In this work ZnO Nanoparticles were fabricated using Liquid Phase Pulse Laser Ablation technique and gives very simple, cheap and a single step method for the preparation of zinc oxide Nanoparticles with no need for any complex or expensive further steps.
Also, It shows a long period of stability, less aggregation, non toxic and contamination colloidal Nanoparticles, In addition this work provides a controlled method to prepare Nanoparticles with a specific properties depended on the preparation conditions and laser parameters.
In the present work, at which ablation of pure Zn metal target in DIW was accomplished using 9 nsec Q-switched Nd:YAG laser at (1.06 μm) laser wavelength , at different laser fluence and number of laser pulses, and the effect of these parameters on optical, photoluminescence, amount of ablated material, structural and surface morphology have been studied.
The atomic absorption result shows that the amount of the ablated material is directly proportional to the laser fluence and number of laser pulses.
The UVVisible show a red shift in the absorption spectra related to the shift in the energy gap due to the size increase in the particle size with to higher laser fluence.
A blue shift was however recognized with a larger number of laser pulses.
The photoluminescence result gives a blue shift with the decrease in laser fluence and number of laser pulses.
The X-Ray diffraction pattern revealed the presence of (100) plane related to ZnO wurtize structure.
The Fourier transform infrared spectroscopy result shows that the intensity of the Zn-O bond vibrational mode is proportional directly to the laser fluence and the number of laser pulses.
Grain size of the obtained NPs are found to increase with laser fluence and decreased with the number of laser pulses as shown by the AFM result.
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Topics
American Psychological Association (APA)
Rashid, Halah Hasan. (2012). Effect of changing different preparation conditions on physical properties of zinc oxide nanoparticles prepared by LP-PLA technique. (Master's theses Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-419925
Modern Language Association (MLA)
Rashid, Halah Hasan. Effect of changing different preparation conditions on physical properties of zinc oxide nanoparticles prepared by LP-PLA technique. (Master's theses Theses and Dissertations Master). University of Technology. (2012).
https://search.emarefa.net/detail/BIM-419925
American Medical Association (AMA)
Rashid, Halah Hasan. (2012). Effect of changing different preparation conditions on physical properties of zinc oxide nanoparticles prepared by LP-PLA technique. (Master's theses Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-419925
Language
English
Data Type
Arab Theses
Record ID
BIM-419925