Self‐Sensitized Carbon Nitride Microspheres for Long‐Lasting Visible‐Light‐Driven Hydrogen Generation |
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Authors: | Quan Gu Ziwei Gao Can Xue |
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Affiliation: | 1. Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, China;2. School of Materials Science and Engineering, Nanyang Technological University, Singapore |
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Abstract: | A new type of metal‐free photocatalyst is reported having a microsphere core of oxygen‐containing carbon nitride and self‐sensitized surfaces by covalently linked polymeric triazine dyes. These self‐sensitized carbon nitride microspheres exhibit high visible‐light activities in photocatalytic H2 generation with excellent stability for more than 100 h reaction. Comparing to the traditional g‐C3N4 with activities terminated at 450 nm, the polymeric triazine dyes on the carbon nitride microsphere surface allow for effective wide‐range visible‐light harvesting and extend the H2 generation activities up to 600 nm. It is believed that this new type of highly stable self‐sensitized metal‐free structure opens a new direction of future development of low‐cost photocatalysts for efficient and long‐term solar fuels production. |
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Keywords: | carbon nitride dye sensitization microspheres photocatalytic H2 evolution hydrogen generation |
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