Beilstein J. Nanotechnol.2011,2, 119–126, doi:10.3762/bjnano.2.14
below yields open end nanotubes with well defined outer diameter and wall thickness. In the past, zincoxide films were mostly preferred and were synthesized using electroless deposition based on aqueous solutions. All these methods previously developed, are not adaptable in the case of ITO nanotubes
growth mechanism of the ITO-NTs was proposed on the basis of the experimental results. Previously zincoxide films have been prepared by electroless deposition in aqueous solutions under different conditions as shown in Table 1.
Ito et al. obtained highly oriented crystalline films, grown directly on a
substrate in aqueous solutions containing urea [19]. Crystalline zincoxide films were prepared in alkaline aqueous solutions containing ethane-1,2-diamine as a chelating agent [20]. Well aligned ZnO microrods within a thin film were formed by the thermal decomposition of an amino complex based on Zn2+ and
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Figure 1:
(a) SEM image of the removed ITO layer from the template surface. (b)–(d) SEM images of bulk ITO-NT...
Beilstein J. Nanotechnol.2010,1, 14–20, doi:10.3762/bjnano.1.3
][3][4]. Optical absorption in the ultraviolet region (peaking around 220 nm) [5] and low photoefficiency [6][7] are factors that deter the wide scale use of TiO2 for photocatalytic activities under sunlight. Zincoxide (ZnO), with a high surface reactivity owing to a large number of native defect
diameters of 5 to 7 nm in size (Figure 1a). Measurements of the lattice fringe widths on the high-resolution TEM micrographs (see Figure 1c) confirm the wurtzite structure of the zincoxide crystallites. Fringe widths of 0.28 nm, 0.16 nm and 0.19 nm measured on different images show the dominance of the
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Figure 1:
(a) Low-resolution TEM micrograph of ZnO nanoparticles, (b) electron diffraction pattern of the ZnO...