Abstract

The origin of bio-based aerogels is from sustainable resources, and their peculiar features, as well as their preparation technique,
form the most fascinating aerogels with CO2 capture applicability. Using diverse polysaccharides and proteins to make bio-
based aerogels is a safe, cost-effective, and ecologically beneficial way. Polysaccharides, found in nature are biodegradable and
renewable. A new generation of biomass-based aerogels was developed in the twenty-first century. These materials are known
as bio-aerogels, and preparation techniques for producing bio-based aerogels generally begin via combining the substances
required, followed by processes that involve gel formation, and the most important is the removal of solvents from the moistened
gels. In this review, we have examined the preparation of bio-based aerogels, sustainability, and their applicability in CO2
capture.