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Publication Citation: Electron Beam Induced Growth of TiO2 Nanostructures

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Author(s): Renu Sharma;
Title: Electron Beam Induced Growth of TiO2 Nanostructures
Published: February 01, 2011
Abstract: We report the evolution of TiO2 nanostructures when Au nanoparticles, supported on single crystal TiO2 substrates, were heated in ~2 Torr of flowing O2 in an environmental transmission electron microscope. Nanostructures with different morphologies were first observed around 500°C. Our measurements show that nanostructure growth is controlled by temperature, oxygen pressure, and the electron beam. We propose a reaction-controlled growth mechanism where mobile Ti atoms generated by the electron beam induced reduction of TiO2, are preferentially re-oxidized at the Au-TiO2 interface.
Citation: Microscopy and Microanalysis
Volume: 17
Pages: pp. 274 - 278
Research Areas: Nanomaterials
PDF version: PDF Document Click here to retrieve PDF version of paper (82KB)