Miss. Elham Mohammadjafarnia

Miss. Elham Mohammadjafarnia |Clyto Access

Sharif University Of Technology, Tehran, IRAN

Poster Presentation

Expertise: nano composite


Miss Elham has developed an early interest in international relations and interdisciplinary studies. Due to this, she has decided to take up a course that is related to world modern-knowledge. In 2010, She has completed BA Chemical Engineering during three years at Shiraz University of Iran and also MSc in Nanoscience and Nanotechnology from the Sharif University of Technology with the highest honors. She has started her group work from 2013 with the best colleagues in Iran and Egypt and they are working on the environmental friendly procedure to recycle polymer wastes and nanocomposite membranes.


Title: Polyelectrolyte Nanocomposite Membranes Using Imidazole- Functionalized Nanosilica for Fuel Cell Applications


The preparation and characterization of a new type of nanocomposite polyelectrolyte membrane TM®(PEM), based on DuPont Nafion / imidazole modified nanosilica (Im-Si), for direct methanol fuel cell (DMFC) applications is described. Related to the interactions between the protonated imidazole groups, grafted on the surface of nanosilica, and negatively charged sulfonic acid groups of Nafion, new electrostatic interactions can be formed in the interface of Nafion and Im- Si which result in both lower methanol permeability and also higher proton conductivity. Physical characteristics of these manufactured nanocomposite membranes were investigated by scanning electron microscopy (SEM), thermogravimetry analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), water uptake, methanol permeability and ion exchange capacity, as well as proton conductivity. The Nafion/Im-Si membranes showed higher proton conductivity, lower methanol permeability and, as a consequence, higher selectivity parameter in comparison to the neat Nafion or Nafion/silica membranes. The obtained results indicated that the Nafion/Im-Si membranes could be utilized as promising polyelectrolyte membranes for direct methanol fuel cell applications.

Related Conferences :

2nd world summit on Nanotechnology and Nanomedicine Research