Photocatalytic Si nanowires/TiO 2 microparticles with extended absorption edge up to 700nm

Chia Yun Chen, Arh Hwang Chen

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Single-crystalline Si nanowires are fabricated by Ag-assisted chemical etching at room temperature. On the basis of efficient light harvesting of Si nanowires, the novel photocatalysts are prepared by mixing the as-prepared Si nanowires with TiO 2 microparticles of various weight ratios. The dye degradation of these combined photocatalysts is above two times more efficient than conventionally used TiO 2 under 580nm light irradiation. We have also validated that the involving photodegradation agrees well with the first-order kinetic model. These photocatalysts possess broad-band absorption with extended edge up to 700nm, facilitating high photocatalytic activity for the urgent treatment of water pollutants.

Original languageEnglish
Article number365304
JournalJournal of Physics D: Applied Physics
Issue number36
Publication statusPublished - 2012 Sep 12

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films


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