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    Effects of oxidizing medium on the composition, morphology and optical properties of copper oxide nanoparticles produced by pulsed laser ablation

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    Type
    Article
    Authors
    Gondal, M. A.
    Qahtan, Talal F.
    Dastageer, Mohamed Abdulkader
    Saleh, Tawfik A.
    Maganda, Yasin W.
    Anjum, Dalaver H. cc
    KAUST Department
    Imaging and Characterization Core Lab
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Core Labs
    Date
    2013-12
    Permanent link to this record
    http://hdl.handle.net/10754/563126
    
    Metadata
    Show full item record
    Abstract
    Pulsed laser ablation in liquid (PLAL) with 532 nm wavelength laser with 5 ns pulse duration is used to produce the nanostructure copper oxide and the effects of oxidizing media (deionized water and hydrogen peroxide) on the composition, morphology and optical properties of the product materials produced by PLAL were studied. XRD and TEM studies indicate that in the absence of hydrogen peroxide, the product material is in two phases (Cu/Cu2O) with the spherical nanoparticle structure, whereas in the presence of hydrogen peroxide in the liquid medium, the product material revealed other two phases (Cu/CuO) with nanorod-like structure. The optical studies revealed a considerable red shift (3.34-2.5 eV) in the band gap energy in the case of hydrogen peroxide in the liquid medium in PLAL synthesis compared to the one in the absence of it. Also the product material in the presence of hydrogen peroxide in the liquid medium showed a reduced photoluminescence intensity indicating the reduced electron-hole recombination rate. The red shift in the band gap energy and the reduced electron-hole recombination rate make the product material an ideal photocatalyst to harvest solar radiation for various applications. The most relevant signals on the FTIR spectrum for the samples are the absorption bands in the region between 450 and 700 cm-1 which are the characteristics bands of copperoxygen bonds. The reported laser ablation approach for the synthesis of Cu2O and CuO nanoparticles has the advantages of being clean method with controlled particle properties. © 2013 Elsevier B.V. All rights reserved.
    Citation
    Gondal, M. A., Qahtan, T. F., Dastageer, M. A., Saleh, T. A., Maganda, Y. W., & Anjum, D. H. (2013). Effects of oxidizing medium on the composition, morphology and optical properties of copper oxide nanoparticles produced by pulsed laser ablation. Applied Surface Science, 286, 149–155. doi:10.1016/j.apsusc.2013.09.038
    Sponsors
    The 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 1311-1/2 and MIT-11109 and MIT-11110. One of the authors (Talal. F. Qahtan) is thankful to Taiz University, Republic of Yemen for finacial support for his master work.
    Publisher
    Elsevier BV
    Journal
    Applied Surface Science
    DOI
    10.1016/j.apsusc.2013.09.038
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.apsusc.2013.09.038
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab

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