Sannaiah Ananda
University of Mysore, India
Title: Electrochemical and biosynthesis of Nano-Photocatalytic materials and its applications in photovoltaic, anti-bacterial, anti-cancer and in preparation of polymer composites
Biography
Biography: Sannaiah Ananda
Abstract
A facile technique for electrochemical synthesis of multi-functional metal oxide and metal sulfide nanocomposites like In2O3/ ZnO, In2O3/SnO/ZnO, ZrS2/ZnS, CdO/ZnS and bio-synthesis of MnO2 is achieved. Under ambient conditions, these methods are capable of producing nanorods, nanoflakes and flower-like particles in a size range about 05-30 nm with a wide band gap of 3.15-5.8 eV. Characterization techniques like SEM-EDS, TEM, ICPMs, XRD, PALS, zeta potential reveals the hierarchical structure and functionality of these materials. The enhancing influence of these nanomaterials as photo-catalyst for the degradation of textile industrial effluents and decomposition of KMnO4 for oxygen evolution as source of energy has been studied. Anti-bacterial activity is tested against bioluminescent bacteria via MIC which shows 50% efficiency at mere 250 μg of nanoparticle. A linear correlation is achieved for photo-degradation and inactivation of bacteria as both are ROS dependent phenomena. The nanomaterials synthesized are doped into different polymers to prepare polymeric films like PVA-CoO/ZnO, POE- CdO/ZnS¬. Conductivity studies of these polymeric films using conductometer, photo-voltaic property is done at different % of doping which shows a steep increase in the conductivity upon doping. These nanoparticles can be potentially applied to the rapid, green and low-cost degradation of industrial printing and dyeing wastewater.