Iranian Research Organization for Science and Technology Journal of Particle Science and Technology 2423-4087 4 2 2018 10 01 Enhanced photocatalytic degradation of 2,4-dichlorophenol in water solution using Sr-doped ZnAl2O4 nanoparticles 101 109 787 10.22104/JPST.2018.2877.1122 EN Morteza Ziyaadini Department of Marine Chemistry, Faculty of Marine Science, Chabahar Maritime University, Iran Mir Mahdi Zahedi Department of Marine Chemistry, Faculty of Marine Science, Chabahar Maritime University, Iran Azadeh Dehghan-Rahimi Department of Marine Chemistry, Faculty of Marine Science, Chabahar Maritime University, Iran Journal Article 2018 04 26 ZnAl₂O₄ and Sr-doped ZnAl₂O₄nanoparticles were synthesized by co-precipitation using ammonia as precipitating agent, followed by thermal treatment at 700°C. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and the Brunauer-Emmett-Teller (BET) were employed to clarify the structure and morphology of the samples. In addition, the presence of Sr in Sr-doped <span>ZnAl</span>₂<span>O</span>₄NPs was further evidenced from energy-dispersive X-ray analysis (EDX). The Photocatalytic activity of ZnAl₂O₄and Sr-doped ZnAl₂O₄nanoparticles were evaluated in the photo-catalytic degradation of 2,4-dichlorophenol (2,4-DCP) in aqueous media under the UV irradiation technique. The effect of various parameters, including catalyst dosage, 2,4-DCP concentration, pH, and temperature, on the degradation of 2,4-DCP was investigated. With 0.6 wt% Sr doped ZnAl₂O₄ samples after 60 min irradiation, 100% of 2,4-DCP photodegradation was observed in acidic conditions, while with undoped ZnAl₂O₄samples only 67% 2,4-DCP was removed upon UV irradiation for 200 min. The reusability of the catalyst was examined under optimized conditions. The results demonstrate that Sr-doped ZnAl₂O₄ nanoparticles exhibit considerably high catalytic stability with more than 90% degradation after the third catalytic cycle. https://jpst.irost.ir/article_787_3621f1454cacf995530ea53652ddf8fb.pdf