Photocatalysis Using ZnO Thin Films and Nanoneedles Grown by Metal–Organic Chemical Vapor Deposition
Jieling Yang(Pohang University of Science and Technology), Sung Jin An(Pohang University of Science and Technology), Won Il Park(Pohang University of Science and Technology), G.‐C. Yi(Pohang University of Science and Technology), Wonyong Choi(Pohang University of Science and Technology)
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Abstract
Highly efficient photocatalytic ZnO nanoneedle arrays with a large surface/volume ratio were prepared on inexpensive, large-area substrates using metal–organic chemical vapor deposition. The photocatalytic activity of ZnO nanoneedle arrays is much enhanced due to their increased surface/volume ratio. It is believed that the “bottom–up” approach may be expanded to create many other one-dimensional oxide semiconductor nanostructures (see Figure).
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