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Alireza Khataee,Arezoo Fazli,Fatemeh Zakeri,Sang Woo Joo 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
Herein, a Z-scheme 2D/2D WO3@CoFe-LDH nanocomposite was synthesized and characterized by XRD,FT-IR, SEM, TEM, EDX, X-ray dot mapping, BET, PL, DRS, and XPS analysis. The integration of the sosynthesizedWO3@CoFe-LDH nanocomposite, ultrasonic, and ozone inferred the existence of a synergyfactor of 2.26 > 1 and 2.17 > 1 for the removal of Acid blue 9 and Acid Orange 7, respectively. Catalystdosage of 1 g/L, the solution pH of 8, the mixture dye concentration of 50 mg/L, and the ozoneflow rate of3 L/h were determined to be the optimum value for the extreme degradation of the dye mixtures under100 min of the sonocatalytic ozonation process. Additionally, the reusability experiments showed thatthe DE was above 80% after 5 times reuse of WO3@CoFe-LDH nanocomposite implying its retainedproperties during the sonocatalytic ozonation process. The contributed active radicals in the degradationof the dye mixtures were profoundly studied and reported to be mainly OH and O2. The so-generatedintermediates were recognized using GCMS analysis and a postulated degradation mechanism wasreported for each of the target pollutants in the presence of WO3@CoFe-LDH nanocomposite. The toxicitytests proved a nontoxic media after the sonocatalytic ozonation of the mixture dyes due to the successiveattack of the reactive oxygen species to the intermediates.
Alireza Khataee,Samira Arefi Oskoui,Mehrangiz Fathinia,Arezoo Fazli,Ali Shahedi Hojaghan,요네스피로즈살라리,주상우 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.30 No.-
Undoped and Gd-doped PbSe nanoparticles were synthesized through a simple hydrothermal method. The photocatalytic activity of the catalysts was evaluated through the degradation of sulfasalazine (SSZ)under visible light irradiation. Synthesized nanoparticles were characterized by SEM, XRD, and XPStechniques. The photocatalytic degradation efficiency of SSZ in the presence of 8% Gd-doped PbSe(80.67%) was higher than that of undoped PbSe (42%). The order of the inhibitory effect of differentinorganic ions was HCO3> Cl > SO42 > F . The photocatalytic degradation intermediates wereidentified using GC–MS. Phytotoxicity of SSZ and its intermediates formed in photocatalytic processwere evaluated.