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Ghadamgahi Sedigheh, Speaker at Nanocatalysts
Islamic Azad University, Iran (Islamic Republic of)
Title : A green chemistry fabrication nanomaterials for waste water removal


Recently, graphene oxide and its products have been recognized as a common nanostructure material due to many applications. The synthesis of graphene oxide besides the extract of Juglans Nigra leaves caused to fabrication of Ag-shaped nanocomposites. The extract was added to 15 and 25 mg of AgNO3 and MQ water and then the obtained mixture was refluxed through agitating a heater stirrer at 100 ? for 3 h (i.e., 15Ag/GO-J and 25Ag/GO-J) or sonicated at room temperature for 30 min (*15Ag/GO-J). A range of characterizations including FE-SEM, EDS, XRD, and FT-IR proved the fabrication of cubic Ag nanoparticles immobilized in graphene oxide nanosheets. The Ag-shaped nanocomposites proved to be active photo-nanocatalysts for removing methyl blue (MB) and methyl orange (MO) from wastewater. MB and MO were degraded in the presence of UV or Vis radiation by *15Ag/GO-J, 15Ag/GO-J, and 25Ag/GO-J as photo-nanocatalysts. The results confirmed the nearly full conversion of MB (~ 97%) from wastewater in the presence of Vis radiation by *15Ag/GO-J photo-nanocatalysts even at the short reaction time (about 15 min).

What will audience learn from your presentation?

  • Fabrication of nanocatalysts by  a green chemistry process
  • Remove water pollutants
  • Using smart materials for chemical procedures 


Dr. Ghadamgahi joined Prof. Khodadi and Prof. Mortazavi team at the University of Tehran (UT) as a post-fellow in 2015 for the research of heterogeneous nanocatalysts-nanocomposites of the gas-phase reactions. Before that, she completed her Ph.D. at the University of Canterbury (UC) in nanochemistry under Dr. Golovko and Prof. Williamson supervision, where she conducted research on heterogeneous nanocatalysts in the liquid-phase reactions and tutored chemistry labs, too. Prior to joining the UC, she did her masters in analytical chemistry at Urmia University as Pro. Farhadi’s team and alsolectured papers in chemistry at Azad University in Tehran Branch.

Dr. Ghadamgahi is interested in heterogeneous nanocatalysts and nanophotocatalysts fabrications, applications, and also characterizations. She has focused on smart materials, such as photocatalysis, natural and artificial polymers, complexes, clusters, composites, particles, colloids, catalysts, photocatalysts, and more recently smart concretes.