Synthesis of Zn-Spinel AgCl Nanocomposite over Reduced Graphene Oxide for Photocatalytic Degradation of Organic Dye Pollutants in Aqueous Solution
Paper ID : 1302-ICNS
Authors:
Azadeh Talati, Mohammad Haghighi *, Ebrahim Abbasi Asl
Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz, Iran Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, Sahand New Town, Tabriz, Iran
Abstract:
The novel ZnAl2O4-AgCl/rGO nanocomposite were designed by microwave combustion, sono-solvothermal and sono-precipitation used at different stages, employing in the photo-degradation of various organic dye pollutants under the simulated solar light. Their properties were described using various analyses such as XRD, FESEM and EDX-dot mapping. The results revealed the suitable dispersion of ZnAl2O4 and AgCl nanoparticles on the rGO nanosheets. On the basis of experimental data, it was concluded the strong influences of the rGO and AgCl simultaneous presences into ZnAl2O4-AgCl/rGO structure on photocatalytic removal of different organic dyes. Its photo-activity under 120 min of the simulated solar light irradiation was about 99%, 73%, and 70% for AO7, RhB and EY, respectively, indicating its ability to the removal of a wide range of organic dyes. This result can be related to the decrease of band gap and the enhanced light absorption features which can lead to enhancing induced electron-hole pairs, the effective separation and migration of charge carriers and reducing recombination rate of them, the increasing surface adsorption of dye molecules and the increment of accessible active sites.
Keywords:
Microwave Combustion; Zn-Spinel Nanophotocatalyst; Reduced Graphene Oxide; Photocatalytic Degradation; Organic Dyes.
Status : Abstract Accepted (Poster Presentation)