Abstract
Polyaniline (PANI) with two different dopants, hydrochloric acid (HCl) and bismuth nitrate (Bi (NO3)3), were synthesized to investigate the effect of dopant on photocatalytic degradation of Rose Bengal, an organic dye, in presence of sunlight. PANI, synthesized by in situ polymerization was characterized by FESEM images, FTIR and UV-Vis spectra. FESEM images show rod like structures obtained for both the dopants. FTIR spectra confirms the formation of conducting PANI with the presence of C=N, C=C stretching modes in quinoid and benzenoid units. Band gap of PANI has been obtained from UV-Vis spectrum. Doped polyaniline exhibited a fast degradation of dye by 98.62 % & 98.12 % within 5 min & 8 min under visible light illumination for the dopant HCl & Bi (NO3)3 respectively.
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