Synthesis of Cu/Cu2O nanoparticles by laser ablation in deionized water and their annealing transformation into CuO nanoparticles
AuthorsGondal, M. A.
Qahtan, Talal F.
Dastageer, Mohamed Abdulkader
Maganda, Yasin W.
Anjum, Dalaver H.
KAUST DepartmentImaging and Characterization Core Lab
Advanced Nanofabrication, Imaging and Characterization Core Lab
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AbstractNano-structured Cupric Oxide (CuO) has been synthesized using pulsed laser ablation of pure copper in water using Q-switched pulsed laser beam of 532 nm wavelength and, 5 nanosecond pulse duration and laser pulse energy of 100 mJ/pulse. In the initial unannealed colloidal suspension, the nanoparticles of Copper (Cu) and Cuprious oxide (Cu2O) were identified. Further the suspension was dried and annealed at different temperatures and we noticed the product (Cu/Cu2O) was converted predominantly into CuO at annealing temperature of 300 'C for 3 hours. As the annealing temperature was raised from 300 to 900 'C, the grain sizes of CuO reduced to the range of 9 to 26 nm. The structure and the morphology of the prepared samples were investigated using X-ray diffraction and Transmission Electron Microscope. Photoluminescence and UV absorption spectrometrystudies revealed that the band gap and other optical properties of nano-structured CuO were changed due to post annealing. Fourier transform spectrometry also confirmed the transformation of Cu/Cu2O into CuO. Copyright © 2013 American Scientific Publishers All rights reserved.
SponsorsThe support by the Physics Department, Center for Nano Technology (CENT) and King Fand University of Petroleum and Minerals is gratefully acknowledged. This work is partialy supported by DSR through projects #RG 1011-1/2 and MIT-11109-1/2. One of the authors (Talal. F. Qahtan) is thankful to Taiz University, Republic of Yemen for finacial support for his master work. He is also thankful to KFUPM for its hospitality and permission to work at its research facilties.
PublisherAmerican Scientific Publishers