Investigation On Modified G C3n4 Based Nanostructured Photocatalysts For Energy And Environmental Application

Abstract

Title of the Thesis: Investigation on Modified g-C3N4 Based Nanostructured Photocatalysts for Energy and Environmental Applications. newlineThe massive growth of industrialization is nowadays provoking to the two most crucial problems for the entire world i.e. environmental pollution and energy crisis. Therefore, the researcher communities are searching for a sustainable and immutable solution to attain pollution free green society without the consumption of non-renewable energy sources. In this aspect, visible light-driven photocatalysis is rewarded as an emerging green tool that could efficiently degrade organic, inorganic pollutants to sustainable products and generate H2 energy by splitting of water. Among them, noble metal free semiconducting material g-C3N4 has received a great approach because of its excellent physical and chemical properties i.e. proper band positions, easy preparation, cost effectiveness and low toxicity nature. However, some shortcomings like inadequate light absorption range, fast charge carrier recombination rate and insufficient specific surface area have restricted its practical application in great extent. For this purpose, numerous techniques have been developed and reported. Here, in this thesis work, first we have modified g-C3N4 through exfoliation to prepare exfoliated g-C3N4 nanosheets (e-CN) with large surface area and abundant active sites for improved charge carrier migration. Moreover, to narrow the band gap energy and to enlarge the light absorption features of g-C3N4 we have synthesized B-doped g-C3N4 (BCN). Again, owing to the synergistic effect of both doping and exfoliation, e-BCN has emerged as an efficient photocatalyst for improved photocatalytic activity. Also, the heterojunction formed between the modified g-C3N4 with other suitable UV and visible light active materials exhibited stupendous photocatalytic performances towards photocatalytic tetracycline hydrochloride (TCH) and ciprofloxacin (CIP) degradation, hydrogen evolution as well as H2O2 production as narrated be