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October 20-22, 2016 Rome, Italy
11th International Conference and Expo on
Nanoscience and Molecular Nanotechnology
Volume 7, Issue 5 (Suppl) J Nanomed Nanotechnol 2016
ISSN: 2157-7439 JNMNT an open access journal NanoScience 2016
October 20-22, 2016
Novel magnetically separable nanocomposites as visible-light-driven photocatalysts with highly enhanced activity
Aziz Habibi-Yangjeh
University of Mohaghegh, Iran
In the present century, human beings face with different challenges, such as environment pollution, energy shortage, and global
warming. Heterogeneous photocatalytic processes have attracted a great deal of attention as a promising green technology with
potential application to address these challenges. However, generally there are three main drawbacks for efficiently using traditional
photocatalysts. Firstly, they cannot sufficiently absorb the solar irradiation, due to their wide band gaps, impeding energy absorptions
from the solar energy. Secondly, separation of photocatalysts from the treated solutions by filtration or centrifugation in large scale
is not economic. Thirdly, the photogenerated electron-hole pairs recombine with high rate, leading to reduced activity. However,
by combination of semiconductors with matching band potentials, the formed nanocomposites can benefit from the synergistic
effects of suppressing recombination of the charge carriers and enhancing absorption of the solar radiation. Moreover, magnetic
visible-light-driven photocatalysts can provide an effective strategy for separation of photocatalysts from the treated solutions using
magnetic field. In this presentation, we will discuss about some novel magnetic nanocomposites prepared by my research group
with facile and large-scale method. The prepared nanocomposites were characterized by X-ray diffraction, energy dispersive analysis
of X-rays, transmission electron microscopy, UV–vis diffuse reflectance spectroscopy, Fourier transform-infrared spectroscopy,
thermogravimetric analysis, and vibrating sample magnetometry techniques. Photocatalytic activities of the nanocomposites were
investigated by degradation of different dye pollutants.
Biography
Aziz Habibi-Yangjeh received his PhD in Physical Chemistry/Reaction Kinetics from Sharif University of Technology, Tehran, Iran, in 2001. He is currently Full
Professor of Physical Chemistry at the University of Mohaghegh, Ardabili. His research interests include preparation of different visible-light-driven photocatalysts
based on ZnO and graphitic carbon nitride (g-C3N4). He has published more than 85 international refereed journal papers. Moreover, he is reviewer in his area of
research for several international journals. Also, he has published two Persian text books.
Aziz Habibi-Yangjeh, J Nanomed Nanotechnol 2016, 7:5 (Suppl)