Lignin is the most underutilized and abundant heterobiopolymer present on earth. The random polymerization and high crosslinked structure make it recalcitrant for depolymerization. Hence the valorization of lignin to small molecules can benefit humankind significantly as a sustainable source. To date, many catalyst systems have been developed to depolymerize lignin. However, selective depolymerization is still an unachieved task. In this scenario, we have developed a polypyrroles based photocatalyst system for the degradation of biomass. Initially, various lignin-based model compounds have been synthesized and characterized. Then the photophysical properties (singlet oxygen quantum yields, and fluorescence lifetime measurements) of the photocatalysts have been assessed. Later, the implications of various reaction parameters have been studied using various characterization techniques. Finally, the polypyrroles based catalyst system has been deployed for the depolymerization of Agri biomass-derived lignin.

Photocatalytic valorization of Agri biomass-based lignin to value-added chemicals

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.