The article discusses the urgent need for renewable energy sources in response to escalating fossil fuel costs and crises. Solar energy, particularly through photocatalytic water splitting to produce hydrogen, has gained attention for its clean and inexhaustible qualities. The focus is on developing efficient, cost-effective photocatalysts, with BCN emerging as a promising candidate due to its unique properties. The article highlights challenges in traditional BCN synthesis methods and introduces a biomass-directed synthesis strategy using abundant and renewable carbon sources. This approach aims to address the limitations of conventional methods by utilizing diverse biomass materials like amylum, sucrose, maltose, and fructose, resulting in BCN nanosheets with improved morphology and performance. The study's results emphasize the potential of biomass-derived BCN nanosheets for scalable and eco-friendly hydrogen production technologies, aligning with sustainable development principles. Overall, the research contributes to advancing knowledge in synthesizing efficient photocatalysts from diverse biomasses, with a focus on promoting carbon recycling and reducing greenhouse gas emissions for a cleaner energy future.