Climate change and global warming are driven by the unusually rapid increase in carbon dioxide (CO2) concentrations in the Earth’s atmosphere. Many researchers from academia or industry fields are working on CO2 scrubbing to lessen CO2 concentration in the atmosphere and protect the environment from CO2 emissions. In this perspective, the authors reviewed the literature and discussed the modern methodologies in CO2 capture techniques, which can be a promising tool for precombustion, postcombustion and oxy-combustion processes. The authors evidently explored various chemical components, which are the prime ingredients in capturing the harmful gas. The authors have discussed materials from guanidine, polyethylene amine, its polymeric derivatives, and such and in combination with other polymers and solid absorbents in liquid form or in the form of a crosslinked matrix, such as aerogels. This chapter focuses on the organic moiety against its absorption efficiency.