Download or read book Stability of Metal Oxide Nanowires Versus Nanoparticles in Solvent Based Dispersion written by Rahel B. Bogale and published by . This book was released on 2005 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: At nanoscale, the dispersion of particles in either organic or aqueous solution is a huge challenge. In recent years, many attempts have been made to stabilize nanoparticles with dispersant. The use of dispersant, however, may cause unwanted properties change on the dispersion applications. In this research, the dispersion behavior of metal oxide nanowires in the absence of dispersant is studied and compared with that of spherical shaped counterparts. A simple technique involving the use of ultrasonication is used to disperse nanoparticles and nanowires in both aqueous and organic solvents. The stabilities of the dispersions are then examined using of particle size distribution, agglomeration pattern, sedimentation rate, zeta potential measurement, and fractal dimension analyses. Theoretical calculations are performed. The experimental results show that metal oxide nanowires disperse readily into either organic or aqueous solvents than that of spherical shaped nanoparticles. In addition, preliminary results of this research indicate that nanowires at extremely small loadings could improve mechanical properties of thin films. This study makes a contribution to our understanding of shape effect on the dispersion of nanomaterials. The stability of metal oxide nanowires in solvent in a significant quantity is studied for the first time.