Electron-beam-induced growth of TiO2 nanostructures

See Wee Chee, Shankar Sivaramakrishnan, Renu Sharma, Jian Min Zuo

Research output: Contribution to journalArticlepeer-review


We report the evolution of titanium dioxide nanostructures when Au nanoparticles, supported on single crystal TiO2 substrates, were heated under ∼260 Pa of flowing O2 in an environmental transmission electron microscope. Nanostructures with different morphologies were first observed around 500°C. Our measurements show that temperature, oxygen pressure, and the electron beam control the nanostructure growth. We propose a reaction-controlled growth mechanism where mobile Ti atoms generated by the electron- beam-induced reduction of TiO2 are preferentially reoxidized at the Au-TiO2 interface.

Original languageEnglish (US)
Pages (from-to)274-278
Number of pages5
JournalMicroscopy and Microanalysis
Issue number2
StatePublished - Apr 2011


  • electron-beam-induced effects
  • in situ electron microscopy
  • nanostructures
  • titanium dioxide

ASJC Scopus subject areas

  • Instrumentation


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