چكيده به لاتين
In this project, zinc oxide nanorodes were synthesized by co-precipitation method which prepared nanorodes have been wurtzite structures. Duo to the properly action of nanorod morphology in photocatalysis process, ZnO nanorod was composed with different percent of graphene oxide. Composing of zinc oxide nanocomposites prevents the recombination of electron-hole pairs produced by optical agglomeration and increases the photocatalytic degradation efficiency. The zinc oxide-graphene 5% was considered to optimum composite. In order to useing more sunlight and activating the ZG-P compound in the visible area, the optimum composite was modified by Tetrakis(4-carboxyphenyl)porphyrin.Also,the photocatalytic activity of nanorods zinc oxide and zinc oxide -graphene composites was evaluated by photocatalytic degradation of methyl orange. Furthermore, ZG-P photocatalyst was used for photocatalytic degradation methyl orange and organic pollutant 4,2-dichlorophenol. According to the results, the ZG-P compound was able to degradation 92% of the color contaminant over a period of 240 minutes and 100% of the organic pollutant in 120 minutes. Also, the role of active species in photocatalytic degradation of ZG - P composition was determined. Radical OH hole have the important roles inphotocatalic degradation of methyl orange pollutant. Finally, the stability of as-prepared ZG-P composite was verified for repeated use in photocatalytic degradation and its stability was verified.
FT-IR, SEM, XRD, EDS and DRS techniques have been used to identify synthesized compounds.
