Phytosynthetic Nanoparticles for Dye Degradation of Contaminated Water
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Abstract
Green synthesis of nanomaterials is rapidly growing in the field of nanotechnology which replaces the use of toxic chemicals and much time consumption. An environmentally benign cost effective method is here with reported for green synthesis of copper oxide (CuO) nanoparticles by using Andrographis Paniculata leaf extract. The phyto molecules present in the extract are acting as reducing agents, stabilizing and capping agents for the biosynthesized nanoparticles instead of harmful chemicals. The characterization studies are done by UV-VISIBLE, FTIR, XRD, SEM-EDX and TEM analysis. These nanoparticles are further applied as photocatalysts for degradation of Alizarine red dye which is water contaminant. The photodegradation of the dye is carried out with these green synthesized CuO nanoparticles by irradiation under sunlight. The degradation study reveals that the 40 ppm dye solution could be degraded by 60 mg of copper oxide nanoparticles with in a time period of three hours producing degradation of 73.23%. The kinetics studies on the other hand, shows degradation process following pseudo first order reaction kinetics with rate constant 3.1474 ×10-4 sec-1.