Multiwall Carbon Nanotube and TiO2 Sol Assembly
Carbon nanotube and TiO2 assemblies (CNT/TiO2) have the great promise of combining the advantages of CNTs and TiO2 as photocatalytic and energy conversion materials. In this study, nanoscale TiO2 sol was assembled onto multiwall carbon nanotubes (MWCNTs). The CNT/TiO2 sol assemblies were characterized by transmission electron microscopy, energy dispersive spectroscopy, and Fourier transform infrared spectroscopy. The study shows that the acidic functional group concentration on CNT surfaces increases with surface modification temperature, up to 1.179 mmol/g. Higher concentration of acidic functional group greatly improves the amount of TiO2 sol assembled onto MWCNTs. Higher TiO2 sol concentration also improves the amount of TiO2 sol assembled onto MWCNT surfaces. The assembly mechanism is mainly by chemical reaction between the –COOH groups of MWCNTs and the –OH groups of TiO2 sol by esterification.
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Document Type: Research Article
Publication date: 2009-10-01
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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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