A comparative study of supported TiO 2 as photocatalyst in water decontamination at solar pilot plant scale
Küçük Resim Yok
Tarih
2006
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The degradation of gallic acid and imidacloprid with supported Millennium PC500 and Degussa P25 TiO 2 is reported. TiO 2 particles were immobilized using a titanium sol-solution and direct deposition on glass supports. The film characterization was done by x-ray diffraction, scanning electron microscopy, and atomic force microscopy, and degradation of organic compounds was monitored by high-performance liquid chromatography, total organic carbon analyzer, and ion chromatography. The experiments were performed under sunlight in compound parabolic collector plants with flat supports inside the glass tubes. Photocatalytic activity of the films was compared and identified. Although sol-gel coatings had better mechanical properties, mineralization was observed to be approximately five times slower than paste-deposited films. Photoactivity of the films decreased with silver deposition due to the nature of the organic compounds. The rate constants were calculated to be between 2 × 10 -1 and 6 × 10 -2 mg m 2 /kJ for organic compounds, and 6 × 10 -2 and 6 × 10 -3 for total organic carbon. Copyright © 2006 by ASME.
Açıklama
Anahtar Kelimeler
Photocatalysis, Silver deposition, Sol-gel film, Supported catalyst
Kaynak
Journal of Solar Energy Engineering, Transactions of the ASME
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
128
Sayı
3
