TY - JOUR ID - 34297 TI - Solar Photocatalytic Degradation of Diclofenac by N-Doped TiO2 Nanoparticles Synthesized by Ultrasound JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Ramandi, Sara AU - Entezari, Mohammad H. AU - Ghows, Narjes AD - Sonochemical Research Center, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN Y1 - 2020 PY - 2020 VL - 39 IS - 3 SP - 159 EP - 173 KW - Ultrasound KW - N-doped TiO2 nanoparticles KW - Photocatalytic degradation KW - Diclofenac KW - Mineralization DO - 10.30492/ijcce.2020.34297 N2 - Anatase N-doped TiO2 nanoparticles were synthesized using ultrasound at low frequency and room temperature. The samples characterized by techniques including XRD, TEM, HRTEM, FT-IR, XPS, and UV–Vis spectroscopy. XPS indicated the existence of nitrogen as an anion dopant within the TiO2 lattice. The solar photocatalytic activity of N-doped TiO2 studied for the degradation and complete mineralization of Diclofenac (DCF). The results showed that the catalytic activity of the nanoparticles related to the operating conditions in the synthesis such as temperature and time of sonication. DCF degradation followed the pseudo-first-order kinetics model under different conditions. Results showed that photogenerated electrons on the catalyst surface played an important role in the mechanism of photocatalytic degradation of DCF. It also confirmed that in the presence of oxygen, the formation of oxidative species such as singlet oxygen and superoxide radicals had major roles in the degradation of DCF. UR - https://ijcce.ac.ir/article_34297.html L1 - https://ijcce.ac.ir/article_34297_72c357f4ae23b526ec2f47c15b99b444.pdf ER -