The photodegradation o f ۴-nitrop henol at presence o f Fe۲O۳ and Fe۲S۳ nanoparticles as photocatalyst

The Fe۲S۳ and Fe۲O۳ nanoparticles are produced by usin g controlled precipitation and aqueous c olloidal so utions met hods, respe ctively. The prepared nanoparticles are characterized by UV- Visible spectroscopy and transmission electron microscopy . The Fe۲O۳ and Fe۲S۳ nanoparticl es are u sed as ph otocatalyst in photodegradation of ۴-nitro phenol as pollutant. The calcin ations temperature, pH of sa mples and photocatalyst dosage a re optimiz e in order to increasi ng of p hotodegradation rate. The highest photodegradation effici ency is obtained at pre sence of ۱.۰ g/L n anoparticles at time ۱۸ ۰ min under UV-Visible irradiation, pH of ۱۰ an d ۱۰ mg/L of ۴-nitroph enol.

کلیدواژه ها:

Fe۲O۳ ، Fe۲ S۳ ، Nanoparticles ، ۴-Nitr ophenol ، Ph otodegradation