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1256779 
Journal Article 
Production of large-scale, freestanding vanadium pentoxide nanobelt porous structures 
Yun, YJ; Kim, BH; Hong, WG; Kim, CH; Kim, YY; Jeong, EJ; Jang, WI; Yu, HY 
2012 
1 
Nanoscale
ISSN: 2040-3364
EISSN: 2040-3372 
4 
5 
1636-1640 
English 
22293666 
WOS:000300433700037 
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 μm) 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 cm(-3) and 40-80 m(2) g(-1), 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.