Doping of boron in TiO2 catalyst: Enhanced photocatalytic degradation of antibiotic under visible light irradiation

Yıl 2017, Cilt: 2 Sayı: 1, 18 - 27, 16.03.2017

Esra Bilgin Şimşek

Öz

A series of
B-doped anatase TiO₂ catalysts have been synthesized by solvothermal
method and the photocatalytic activity toward a fluoroquinolone antibiotic (ciprofloxacin)
has been investigated. The results showed that the boron doping not only reduced the band gap energy, it also improved the
photocatalytic activity of TiO₂ towards the selected antibiotic
under visible light irradiation. The effects of solution pH, catalyst dosage
and the presence of process enhancer/inhibitors on the photoactivity were examined.
Response surface methodology was successfully utilized to model and optimize the
photocatalytic process with high correlation (R² = 0.9960). The
degrees of boron doping and visible light active mechanism have also been studied.
Compared with raw TiO₂ boron doped catalysts exhibit excellent
photostability and photodegradation ability of ciprofloxacin under visible
light irradiation.

Anahtar Kelimeler

Antibiotics degradation, Boron doped TiO2, Photocatalysis, Visible light

Kaynakça

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