Abstract
Detection of volatile organic compounds (VOCs) and flammable gases for health and security purposes using two-dimensional (2D) based materials for gas sensing has fascinated and attracted a great attention owing to their remarkable high surface to volume ratio and unique electronic properties. Furthermore, 2D based materials have attracted a great deal of interests due to their high sensitivity, selectivity as well as fast response. It is well known that for a material to be regarded as a gas sensor, it should have a certain combination of properties, such as high sensitivity, exceptional selectivity, high stability and rapid response time, while operating at normal conditions. Most of these properties are dependent on the surface area to volume ratio, high comparative number of defects and the crystal structure of 2D material sensing sheet. Moreover, the high demand for gas sensors worldwide justifies this work, as the market is estimated to increase to $1,336.2 million by 2027 from $823.1 million in 2019. The World Health Organisation (WHO) has reported that about 5.5 million deaths occur in a year due to air pollution...
M.Sc. (Nanoscience)