AI Article Synopsis
- - The study focuses on the need for effective and affordable photocatalysts to enhance water splitting for hydrogen energy applications.
- - Researchers found that g-C N combined with tungsten compounds, particularly tungsten carbide (W C), significantly boosts photocatalytic activity, achieving a hydrogen evolution rate of 98 μmol/h with strong stability.
- - The superior performance of W C is linked to its optimal band alignment and high hydrogen evolution rate, suggesting that tungsten carbide is a more effective cocatalyst than sulfide or nitride counterparts for photocatalytic reactions.
Article Abstract
The development of earth-abundant, economical, and efficient photocatalysts to boost water splitting is a key challenge for the practical large-scale application of hydrogen energy. In this study, g-C N loaded with different tungsten compounds (W C, WS , and W N) is found to exhibit enhanced photocatalytic activities. W C/g-C N displays the highest activity for the photocatalytic reaction with a H evolution rate of up to 98 μmol h , as well as remarkable recycling stability. The excellent photocatalytic activity of W C/g-C N is attributed to the suitable band alignment in W C/g-C N and high HER activity of the W C cocatalyst, which promotes the separation and transfer of carriers and hydrogen evolution at the surface. These findings demonstrate that the tungsten carbide cocatalyst is more active for the photocatalytic reaction than the sulfide or nitride, paving a way for the design of novel and efficient carbides as cocatalysts for photocatalysis.
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| http://dx.doi.org/10.1002/cssc.201900844 | DOI Listing |
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