Photodegradation of organic hazardous materials in presence of poly2-chloroaniline and poly 2-chloroaniline titanium dioxide quantum dots

Document Type : Original Article


1 National Research Center

2 chemistry department, Al-Azhar University

3 Al-Azhar University, Faculty of Science, Chemistry Department, 11884

4 Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.


Conjugated polymers have recently been under active investigation as promising alternatives to use in photocatalysis. This is due to their unique advantages of low cost, high chemical stability, and molecularly tunable optoelectronic properties. This work explores the easy way to synthesize efficient poly2-chloroaniline (P2ClANI) via the chemical oxidative polymerization of P2ClANI. Titanium dioxide quantum dot (TiO2 QD) have been prepared and used in preparation of P2ClANI/TiO2 QD. X ray diffraction, FTIR, UV &Visible spectra, TGA, surface area, EDX and TEM measurements were used to characterize all prepared polymers. The photocatalytic activities of all recent polymers were investigated by the photo-degradation of methyl orange dye as an organic hazardous chemical in an aqueous medium and were assessed using a 50-watt xenon lamp light source and direct sunlight. The effect of irradiation time, dye concentration and photo-catalyst amount on the photo-degradation performance of the dye in the presence of recent polymers was studied. P2ClANI/TiO2 QD demonstrated high photocatalytic properties, with 80.3% efficiency, as opposed to 47% for P2ClANI only. When P2ClANI, TiO2 QD, and P2ClANI/TiO2 QD are present during the recycling processes in the presence of all created samples up to four times, the photo-degradation rate decreases by about 57.18, 9.61 and 9.51 % respectively.


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