title: Production of large-scale, freestanding vanadium pentoxide nanobelt porous structures.
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 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.
authors.affiliation: Electronics and Telecommunications Research Institute (ETRI), Daejeon, 305-700, Korea.
authors.forename: Yong Ju
authors.initials: YJ
authors.lastname: Yun
authors.forename: Byung Hoon
authors.initials: BH
authors.lastname: Kim
authors.forename: Won G
authors.initials: WG
authors.lastname: Hong
authors.forename: Chang Hee
authors.initials: CH
authors.lastname: Kim
authors.forename: Yark Yeon
authors.initials: YY
authors.lastname: Kim
authors.forename: Eun-ju
authors.initials: EJ
authors.lastname: Jeong
authors.forename: Won Ick
authors.initials: WI
authors.lastname: Jang
authors.forename: Han Young
authors.initials: HY
authors.lastname: Yu