Electrospinning direct preparation of SnO2/Fe2O3 heterojunction nanotubes as an efficient visible-light photocatalyst

Abstract Herein SnO 2 /Fe 2 O 3 heterojunction nanotubes are prepared by a facile electrospinning technique. The heterojunction nanotubes with a diameter of about 200 nm uniformly distribute SnO 2 and Fe 2 O 3 nanocrystals and present the obvious interfaces between them, which form perfect SnO 2 /Fe 2 O 3 nano-heterojunctions. A possible mechanism based on self-polymer-templates is proposed to explain the formation of SnO 2 /Fe 2 O 3 heterojunction nanotubes. The heterojunction nanotubes show high photocatalytic activity for the degradation of RhB dye under visible light irradiation. The prepared SnO 2 /Fe 2 O 3 heterojunction nanotubes can also be applied to other fields such as sensor, lithium-ion batteries.