Stu dy of photocatalytic activity o f CoO nanoparticl es in phot odegradation of ۲- nitrophenol

Cobalt Oxide nanoparticles were prepared by controlled precip tion metho d and calcin ed at ۳۰۰ o C. X-ray diffraction pattern show t he cubic str ucture for prepared nan oparticles that the averag e size of es timated from the broadening of X RD peak using Scherrer ’s equation is ۱۰ nm. The photocatalytic activity of CoO n anoparticle s was studied in photodegaradation of ۲-nitrophenol. The optimum co nditions were obtained pH of ۱۰ and photocatalyst dosage of ۱.۳mg/L. The apparent rate constant of degradatio n is obtained ۰.۷۴۵ min-۱ at initial concentration of ۳۰ ppm of po llutant.

کلیدواژه ها:

CoO ، Photocatalyst ، ۲-Nitrophenol ، Photo degradation .