Generation of silver-anatase nanocomposite by excimer laser-assisted processing

Yasir F. Joya, Zhu Liu, Zengbo Wang

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We demonstrate crystallization of the anatase thin film with self-adhering silver nanoparticles (Ag NPs) by a single-step laser process. Titanium dioxide (TiO2) solgel precursor film was deposited on glass substrate and Ag ions were adsorbed from silver nitrate aqueous solution. A nanosecond (ns) pulsed beam of KrF (248 nm) laser was traversed across the amorphous Ag-TiO 2 film leading to crystallization of the anatase and simultaneous generation of cubic as well as hexagonal Ag NPs. A uniform size distribution of Ag NPs was observed with an average size of 9.6 nm. On the other hand, anatase grains were 38 nm in size as determined by X-ray diffraction (XRD) and scanning transmission electron microscope (STEM). Analytical simulations indicated a solid-state diffusion and phase transformation mechanism dominating within the film due to laser treatment. Copyright 2012 Author(s).
    Original languageEnglish
    Article number032171
    JournalAIP Advances
    Volume2
    Issue number3
    DOIs
    Publication statusPublished - 2012

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