TiO2-Based Nano-Wells for Fabricating Nanocrystals
Abstract:This paper reports a convenient bottom-up method to fabricate robust and inert TiO2-based nanowells for growing nanocrystals. These TiO2-based nanowells are fabricated in three steps: fabricating a thin film of self-organized TiO2 nanotubes by the convenient electrochemical anodization method (Step 1), striping the fabricated nanotube thin film to expose the ordered array of nanowells underneath (Step 2), and surface modifying the exposed nanowells to adjust their surface hydrophobicity and hydrophilicity (Step 3). These fabricated nanowells can then be used to template the growth of an ordered array of nanocrystals by trapping a tiny droplet of precursor solution inside each nanowell. The diameter and surface hydrophobicity and hydrophilicity of the TiO2-based nanowells can be easily tailored by controlling the anodization parameters used in Step 1 and surface modifying parameters used in Step 3, respectively, thus enabling these TiO2-based nanowells a promising template substrate for growing a wide range of nanocrystals with adjustable sizes from aqueous and organic solvent systems.
Document Type: Research Article
Publication date: December 1, 2011
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- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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