Abstract
We report on facile fabrication of 1-D flat ZnO nanotower arrays on various substrates, including a metal, a semiconductor and an insulator. The nanotowers have a unique flat basal section near the substrate and taper in stages to wire-like at the tip. Electron microscopy and X-ray photoelectron spectroscopy are used to characterize these new nanostructures, revealing that their morphologies are significantly influenced by reaction temperature. A qualitative formation mechanism is proposed based on the experimental observations. A proof-of-concept demonstration shows that the ZnO nanotower arrays are highly effective at adsorbing and subsequently photo-remediating a model pollutant (Eosin B) from water. These observations could promote new applications of photocatalytic adsorbents for wastewater treatment utilizing oxide semiconductor nanostructures.
| Original language | American English |
|---|---|
| Pages (from-to) | 2685-2691 |
| Number of pages | 7 |
| Journal | Nanoscale |
| Volume | 2 |
| Issue number | 12 |
| DOIs | |
| State | Published - Nov 2010 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Materials Science
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