Recent Studies on Applications of Schiff Bases and Their Complexes in Atmospheric Carbon Dioxide Capture

Over many decades, global warming induced by the rising level of atmospheric carbon dioxide appeared to be the point of high concern. Energy demand in running the modern civilisation is mainly fulfilled by combustion of fossil fuels, which, in turn, produces carbon dioxide as a waste. In this respect, capture and fixation of CO2 waste into different value-added products like carbonates, can make the potential shift in the view of carbon dioxide emission. For coupling carbon dioxide and epoxide with formation of carbonates, different metal halides, ionic liquids, ternary alkyl ammonium or phosphonium salts as well as metal complexes are used as active catalysts. This paper presents an overview on Schiff bases and their metal complexes used as catalysts in fixation of CO2 and, hence, its removal from atmosphere within recent twenty years.