Dual enhancement of photooxidation and photoreduction activity by coating CdS nanoparticles on lignin-based biomass carbon with irregular flower-like structure

Energy crisis and environmental pollution have become two major problems facing mankind. Photocatalytic hydrogen production and degradation of organic pollutants using solar light is a promising solution. Thus, the study of efficient, environmentally friendly and stable photocatalysts has been an important research topic for many researchers over the years. In this study, lignin-based biomass carbon was first used as a carbon source and compounded with CdS nanoparticles to prepare CdS/LC composite. The resulting CdS/LC photocatalyst not only solves the high agglomeration of CdS nanoparticles, but also presents excellent photocatalytic activity and high stability. The optimal CdS/LC-3 exhibits high photocatalytic degradation rate and photocatalytic hydrogen evolution rate, which are about 2.3 and 3.73 times higher than those of pure CdS, respectively. This research work provides a new and effective way for the utilization of lignin, which makes the high-quality utilization of lignin possible.

Automated summary

The study involves the preparation of CdS/LC photocatalyst by compounding lignin-based biomass carbon with CdS nanoparticles, solving the aggregation issue of CdS. The resulting photocatalyst showcases excellent activity and stability, offering a new pathway for the high-quality utilization of lignin.