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Production of Large-Scale, Freestanding Vanadium Pentoxide Nanobelt Porous Structures
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- Authors
- Yong Ju Yun, Byung Hoon Kim, Won G. Hong, Chang Hee Kim, Yark Yeon Kim, Eun-ju Jeong, Won Ick Jang, Han Young Yu
- Issue Date
- 2012-02
- Citation
- Nanoscale, v.4, no.5, pp.1636-1640
- ISSN
- 2040-3364
- Publisher
- Royal Society of Chemistry (RSC)
- Language
- English
- Type
- Journal Article
- Abstract
- Large-scale, freestanding, porous structures of vanadium pentoxide nanobelts (VPNs) were successfully prepared using the template-free freeze-drying method. The porous and multi-layered VPN macrostructures are composed of randomly oriented long nanobelts (over 100 mm) and their side length can be controlled up to a few tens of centimetres. Also, the bulk density and surface area of these macrostructures are 3-5 mg cm3 and 40-80 m2 g1, respectively, which are similar to those of the excellent adsorbents. In addition, the removal efficiency measurements of ammonia molecules revealed that the VPN porous structures can adsorb the ammonia molecules with the combinations of van der Waals forces and strong chemical bonding by functional groups on the VPN surface.
- KSP Keywords
- Chemical bonding, Freeze-drying method, Functional groups, Porous structure, Randomly oriented, Surface Area, Template-free, Van der Waals force, bulk density, efficiency measurements, large-scale