Oriented TiO₂ Nanostructured Pillar Arrays: Synthesis and Characterization

Abstract

Nanostructured parallelly oriented TiO2 micropillar arrays, either pure or implanted on a carbon matrix, are prepared via controlled oxidation of hybrid carbonaceous systems. Mild oxidation at 500 °C (O2 1%) leads to formation of parallelly oriented elongated TiO2 pillars, which emerge from a compact α-C phase (TiO2/C composite). Under strong oxidation conditions (O2 10%) formation of pure TiO2 pillar arrays is observed. The pillars constituted of partially cemented anatase or anatase/rutile nanoparticles. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2008/adma200702768_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.