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Hydrogen Charging of Aluminum using Friction in Water
Published on: January 28, 2020
An Improved Metal-to-Ligand Charge Transfer Mechanism for Photocatalytic Hydrogen Evolution
Sicong Wang1, Chao Shen1, Yanqi Xu1
1College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, 180 Si-Wang-Ting Road, Yangzhou, 225002, China.
Abstract:
It is of great significance to fabricate a full-spectrum-active photocatalysts for more efficient utilization of solar energy. An improved metal-to-ligand charge transfer (MLCT) mechanism is proposed for a photocatalyst based on graphitic carbon nitride (g-C3 N4 ). UV/Vis spectroscopy indicates that the as-prepared photocatalyst absorbs light at λ<1100 nm. The rather stable photocatalyst is found to be 26.1 times more active in photocatalytic hydrogen evolution (868.9 μmol h-1 g-1 ) than bulk g-C3 N4 (B-CN) under visible light. The material exhibits high activity under near-infrared (NIR) irradiation (49.1 μmol h-1 g-1 ). The mechanism of photocatalytic activity and stability are investigated by both experiment and theory. This proposed mechanism may have great potential for engineering renewable photocatalysts in the future.
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