title: Synthesis of Sn doped CuO nanotubes from core-shell Cu/SnO(2) nanowires by the Kirkendall effect.
abstract: Sn doped CuO nanotubes were synthesized by thermal oxidization of Cu/SnO(2) core-shell nanowires in air through the Kirkendall effect. The Cu/SnO(2) core-shell nanowires were sequentially electrodeposited by forming a SnO(2) shell followed by electrodeposition of the Cu core. After thermal treatment in air, the core-shell Cu/SnO(2) (13 +/- 2 nm thick shell on 128 +/- 15 nm in diameter core) nanowires were oxidized to form Sn doped CuO nanotubes with an average wall thickness and outer diameter of 54 nm and 176 nm, respectively. Room temperature I-V characterization indicated that the electrical resistivity of the nanostructures was 870 +/- 85 Omega cm. The methodology that was demonstrated is very general and could be used to synthesize coaxial SnO(2) shells with a variety of electrodeposited cores. In addition, doped metal oxide nanotubes can be readily synthesized by thermal oxidization of core-shell nanowires in air where the dopant content can be tuned by controlling the shell thickness through adjusting the deposition time.
authors.affiliation: School of Mathematics and Physics, Nanjing University of Information Science & Technology, Nanjing 210044, People's Republic of China.
authors.forename: Min
authors.initials: M
authors.lastname: Lai
authors.forename: Syed
authors.initials: S
authors.lastname: Mubeen
authors.forename: Nicha
authors.initials: N
authors.lastname: Chartuprayoon
authors.forename: Ashok
authors.initials: A
authors.lastname: Mulchandani
authors.forename: Marc A
authors.initials: MA
authors.lastname: Deshusses
authors.forename: Nosang V
authors.initials: NV
authors.lastname: Myung