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Electron Beam Induced Growth of TiO2 Nanostructures

Published

Author(s)

Renu Sharma

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

Citation

Sharma, R. (2011), Electron Beam Induced Growth of TiO2 Nanostructures, Microscopy and Microanalysis, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905919 (Accessed March 29, 2024)
Created February 1, 2011, Updated February 19, 2017