Preparation of hollow fibers of tin oxide with and without antimony doping

Hollow fibers of tin oxide with and without antimony doping were prepared by a chemical solution deposition technique using cotton fibers as a template. Homogeneous coating of tin dioxide undoped and doped with antimony was achieved on the organic fibers in aqueous solutions of tin difluoride and antimony trifluoride. Crystalline tin oxide hollow fibers were then obtained by removing the organic compounds with combustion in air. Since antimony-doped tin oxide annealed at 500-600 °C showed a low resistivity around 3.5 × 10^-3 ohm cm, the ceramic fibers produced by this technique have great potential as a novel conductive material.