Materials Science & Engineering

Biography

Biography: Nezar H Khdary

Abstract

We have successfully demonstrated that by changing the synthesizing conditions, MSNs, with different morphologies can be produced. Rod shape MSNs with very high surface area was obtained by carrying out the static condensation at ambient conditions. While Spherical shape MSNs was obtained when the static conditions was performed at 100°C. Loading copper metal in the rod shape MSNs using the chemical modification with PEDA produced very uniform and well distributed nanoparticles. The XRD indicated that the formation of crystalline copper nanoparticles. The rod shape MSNs showed higher CO2 adsorption properties than the spherical counterpart thanks to high surface area and accessibility of the pores. Loading the copper nanoparticles using DAE via physical interaction between the MSNs and DAE produced very poor distribution of non-uniform aggregates of the copper nanoparticles. Therefore, the CO2 adsorption was less than that obtained when PEDA was used. This demonstrates the pre-modification of silica surface with PEDA significantly enhanced the the molecular level during the synthesis and to the absence of the heat treatment during the reduction step. In addition the advantage of this method is the nanoparticles synthesis involves the complexation of Cu2+ ions with the ethylenediamine functional groups which minimizes the aggregation between the produced metal nanoparticles.