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Enhanced Light Absorption and Photo-Generated Charge Separation Efficiency for Boosting Photocatalytic H Evolution through TiO Quantum Dots with N-Doping and Concomitant Oxygen Vacancy.
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September 2024
Chongqing School, University of Chinese Academy of Science (UCAS Chongqing), Chongqing, 400714, China.
Article Synopsis
- Low-range light absorption and fast recombination of charge carriers have limited photocatalysis, but quantum dots (QDs) show promise in overcoming these issues due to their tailored photon properties and improved charge separation.
- Researchers developed nitrogen-doped TiO nanoparticles with stable oxygen vacancies (N-TiO-V) using a special low-temperature method, which prevents aggregation through electrostatic repulsion and allows them to utilize a broader solar spectrum effectively.
- The innovative N-TiO-V particles achieved a significantly higher photocatalytic hydrogen evolution rate (HER) compared to conventional TiO, with impressive rates under both UV and visible light, suggesting potential for sustainable energy applications.