RThe elevatising atmosphericon of carbon dioxide (CO₂) concleventrationls in the atmosphere is responsible for global warming which in turn causes abrupt climate change and consequently poses a threat to the living organisms in the coming years. To reduce CO₂ content in the aptmosphere CO₂ capture and separation aris highly ne crucial to reduce thecessary. Among various methods of CO₂ content in the atmosphere. Ppture post-combustion capture is one of the most very much useful techniques for capturing CO₂ dubecause to its practicalif its operational simplicity and ease of use. For adsorption-driven post-combustion CO₂ applicability in many industries and power sectors, such as coapture, sorbents with largel-fired power plants. Polymers with high surface area, high volume, and narrow pores are highly effectivideal solid sorbents for adsorption-driven post-combustion CO₂ capture. Natural polymers, such as polysaccharides, are less expensive, more plentifulcheap, abundant, and can be modified by a variety ofvarious methods to produce porous materials and thus can be effectively utilized for CO₂ capture while the surface area and the pore size of synthetic porous organic polymers can be tuned precisely for high CO₂ capturing capacity. A significant amount of research activities has already been established in this field, especially in the last ten years and are still in progress. In this review, we have introduced the latest developments to the readers about synthetic techniques, post-synthetic modifications and CO₂ capture capacities of various biopolymer-based materials published in the last five years (2018–2022).