Effect of Fe-doped TiO₂ photocatalysts on the degradation of acid orange 7

ABSTRACT

The purpose of the research was to determine the photocatalytic degradation efficiency of acid orange 7 (AO7) using 2 mol% Fe-doped TiO₂ as photocatalysts under UV irradiation. Fe-doped TiO₂ powder synthesized by solid-reaction technique reveals the average particle size of 0.91 μm, BET surface area of 11.6 m²/g, a wide pore-size distribution with the average pore diameter of 3.2 nm and pore volume of 0.035 cm³/g. Within the experiment, AO7 was prepared as a synthetic textile wastewater at the initial concentration of 34 mg/L along with using various doses of Fe-doped TiO₂ photocatalysts. The results indicated that Fe-doped TiO₂ with dose of 0.100 g in 100 mL of AO7 reached the highest removal efficiency about 88.7%.

KEYWORDS:

• Photocatalysts
• X-ray photo-emission spectroscopy (XPS)
• photocatalytic reaction

Funding

This project was carried out with support from the Cleveland State University Dissertation Research Award Program and National Science Council of Taiwan under Contract No. NSC 101-2918-I-259-005 and NSC 102-2120-M-259-002.