Template assisted fabrication of TiO2 and WO3 nanotubes

Chien Chon Chen, Chin Hua Cheng, Chung Kwei Lin

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Anodic aluminum oxide (AAO) templates with diameters of 200-500 nm were generated by anodizing a commercial aluminum (Al) substrate (99.7%) in 1 vol% phosphoric acid (H3PO4), with an applied voltage of 195 V. Titania and tungsten oxide nanotubes (NTs) were successfully grown on AAO template by the sol-gel process. Thermal gravimetric analyzer (TGA) curves showed that gel can be transfered to nanocrystalline particles after 19% weight loss of water molecule by evaporation. The results showed that the nanocrystalline TiO2 NTs presented at 200 °C, and grains grew as temperature increased. At a temperature of 550 °C, the (101), (103), (004), (112), (200), (105), and (211) planes of anatase TiO2 were detected clearly, whereas tungsten oxide NTs are amorphous after heat treatment at 200 °C or 300 °C. But the (110), (111), (002), (022), (222), and (004) planes of γ-WO3 phase can be observed obviously after the heat treatment at 400 °C.

Original languageEnglish
Pages (from-to)6631-6636
Number of pages6
JournalCeramics International
Volume39
Issue number6
DOIs
Publication statusPublished - Aug 2013

Keywords

  • A. Sol-gel
  • AAO
  • Nanotube
  • Titania
  • Tungsten oxide

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

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