2D material system for toxic gas sensing

In this thesis, we have synthesized 2D gC3N4, SnO2 sheet, and silver doped SnO2 Multiwall Carbon Nano Tube (MWCNT) was also incorporated into Ag doped gC3N4 and SnO2. Further, its structural, morphological, and elemental properties were studied. The material was drop cast into a carbon electrode for room temperature CO sensor. ZnO nanoneedle deposition was performed by the spray pyrolysis technique. Various thin film characterizations were done, and an interdigitated ITO electrode was deposited on the film. The device was characterized as a UV sensor. Further, SO2 sensing was done using a fabricated ZnO UV detector. A new approach with the Hexagonal split ring resonator loaded with rGO, gC3N4, and gC3N4/MWCNT nano-hybrid composite was studied for CO gas at room temperature. Further XRD, SEM, and TEM were done for the nanomaterial. The rGO sensor exhibits good sensitivity in terms of frequency for the lower level of CO detection. gC3N4/MWCNT material demonstrated high Q response and good sensitivity for the lower level of CO gas molecules.