In the context of photocatalysis, carbonaceous materials were known to improve critical properties of semiconductors visible-light-driven photocatalysis, such as their specific surface area, number of active redox sites, chemical stability, and capacity to absorb molecules involved in the photo-driven reaction process . Furthermore, carbons have a high electrical conductivity that limits photocorrosion and makes charge separation easier. Xiang et al. show embedded CdS nanoparticles on carbonized poplar catkin microplates. In a separate study, Quan et al. carbonized Sulphur-rich carrageenan from seaweed biomass and combined it with cadmium acetate to generate a composite photocatalyst that included CdS and carbon aerogel . Additional benefits for optimizing photocatalysts based on carbonaceous materials derived from biomass are the low cost, extensive availability, renewable, environmentally friendly, high porosity, and long-term stability of biomass-derived carbons . Nagatomo et al demonstrated a correlation between organic pigment LUMO level and photocatalytic activity to achieve the modifying effects.