石墨相氮化碳基Z-Scheme体系光催化分解水研究进展

摘要

Graphitic carbon nitride(g-C3N4),with unique electronic structure,high stability,and visible-light-induced photocatalytic activity,has attracted considerable attention. The g-C3N4-based Z-scheme photocatalytic system can effectively lower the recombination rate of electron-holes and the utilization of light sources is improved. The reaction mechanism of photocatalytic water splitting and the applications of g-C3N4-based Z-scheme photocatalytic system in photocatalytic water oxidation, photocatalytic water conversion and photocatalytic overall water splitting are reviewed. Moreover,the future development of Z-scheme is forecasted.%石墨相氮化碳(g-C3N4)以独特的电子结构、稳定的化学结构和显著的可见光活性而备受瞩目,g-C3N4基Z-Scheme光催化体系能够有效地降低光生电子空穴的复合几率,提高光源吸收利用率.介绍了光催化分解水的反应机理,综述了g-C3N4基Z-Scheme体系在光催化水氧化、光催化水解制氢、光催化全分解水方面的应用,并对未来Z-Scheme的发展进行了展望.