Highly Porous Metal Oxide Networks of Interconnected Nanotubes by Atomic Layer Deposition
Nano Letters2012Vol. 12(9), pp. 5033–5038
Citations Over TimeTop 10% of 2012 papers
Abstract
Mesoporous metal oxide networks composed of interconnected nanotubes with ultrathin tube walls down to 3 nm and high porosity up to 90% were fabricated by atomic layer deposition (ALD) of alumina or titania onto templates of swelling-induced porous block copolymers. The nanotube networks possessed dual sets of interconnected pores separated by the tube wall whose thickness could be finely tuned by altering ALD cycles. Because of the excellent pore interconnectivity and high porosity, the alumina nanotube networks showed superior humidity-sensing performances.
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