Breakthrough in Photocatalytic Materials for Sustainable Energy and Environmental Remediation

A team of researchers from Nanjing Forestry University in China has made a significant discovery in the field of photocatalytics, developing a novel photocatalyst that exhibits excellent catalytic performance in degrading organic pollutants and producing hydrogen. According to the study, the introduced sulfur species and cyano groups in the graphitic carbon nitride (CN) material significantly improved its photocatalytic activity, making it a promising candidate for future applications in energy conversion and environmental remediation.

Key Takeaways:

• The researchers developed a CN photocatalyst co-modified with sulfur (S) and cyano moieties through thermal condensation polymerization.
• The introduced S species modulated the band structure, increased charge carrier mobility, and significantly promoted charge separation and transport.
• The introduction of cyano groups extended light absorption range and improved the material's selective adsorption of reactant molecules.
• The as-prepared sulfur-modified CN photocatalyst exhibited excellent catalytic performance, with a Rhodamine B removal efficiency of 97.3% and H2 production level of 1221.47 µmol h-1 g-1.
• The photocatalyst demonstrated excellent recyclability and stability, maintaining its performance over four cycles of experiments.
• Mechanistic studies confirmed the dominant role of OH and O2- as active species responsible for the reaction system's performance.
• The research highlights the potential of CN-based materials decorated with heteroatoms and functional groups for future applications in energy conversion and environmental remediation.

Statistics:

• 97.3% Rhodamine B removal efficiency
• 1221.47 µmol h-1 g-1 H2 production level
• 4 cycles of experiments demonstrating excellent recyclability and stability
• Dominant role of OH and O2- as active species in the reaction system (as active species)

Sources:

• Construction of Sulfur-doped and Cyanide-modified Carbon Nitride Photocatalysts With High Photocatalytic Hydrogen Production and Organic Pollutant Degradation. Catalysts, 2025;15(9):849.
• Catalysts can be contacted at: Mdpi, St Alban-Anlage 66, Ch-4052 Basel, Switzerland.
• Additional information may be obtained by contacting Weinan Xing, Nanjing Forestry University, College of Ecology and Environment, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, People's Republic of China.