Design and fabrication of a TiO 2 /nano-silicon composite visible light photocatalyst

Chun Yu Lin, Yean Kuen Fang, Che Hao Kuo, Shih Fang Chen, Chun Sheng Lin, Tse Heng Chou, Yu Hua Lee, Jui Che Lin, Sheng Beng Hwang

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Nano-silicon (nc-Si) was utilized as the charges generator to promote the photocatalytic and super-hydrophilic reactivity of TiO 2 film under visible light irradiation. The photocatalytic ability of TiO 2 /nc-Si composite photocatalyst was evaluated by a set of experiments to photodecompose 100 ppm methylene blue (MB) in aqueous solution. And the super-hydrophilic property was characterized by measuring the water droplet contacts angle, under visible light irradiation in atmospheric air and at room temperature. Under 100 mW/cm 2 visible light irradiation, the droplet contact angles were reduced to 0° within 4 h with nc-Si charge generator. Additionally, the rate constant of MB photo-degradation was promoted 6.6 times.

Original languageEnglish
Pages (from-to)898-903
Number of pages6
JournalApplied Surface Science
Volume253
Issue number2
DOIs
Publication statusPublished - 2006 Nov 15

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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