Single site Co-S anchored on carbon nitride as a highly active cocatalyst for photocatalytic hydrogen evolution
Source abstract
Abstract
The low utilization rate of photo-generated carriers in graphite-phase carbon nitride (g-C 3N 4 ) is the main factor limiting its photocatalytic performance. In this work, to begin with single-atom Co was inserted into the structure of g-C 3N 4, then it was vulcanized to prepare composite Co-S single-site in g-C 3N 4 . The results show that the Co-S single-site cocatalyst was successfully synthesized and was stably anchored in the structure of g-C 3N 4 . As an active site, it can not only enhance the reaction activity, but also capture electrons to provide transfer channels for the photo-generated carrier, thereby enhancing the photocatalytic hydrogen evolution performance of g-C 3N 4 . The hydrogen production of Co-S single-site modified g-C 3N 4 reaches 72.85 μmol (per 0.02 g photocatalyst) under visible light, which is 9 times higher than that of pure g-C 3N 4. This work provides a reasonable method for the preparation of composite single-site cocatalyst.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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