2013 Fiscal Year Final Research Report
Photo-functional materials with ordered structure by carbon nitride
| Project/Area Number |
24760553
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Osaka Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 光触媒 / カーボンナイトライド / 可視光 / 水素製造 |
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| Research Abstract |
The visible-light responsive TiO2 photocatalyst was synthesized by the thermal-pyrolysis of organic compounds such as cyanuric acid with TiO2 under N2 atmosphere at 673 K for 3h. It was found that the TiO2 surface is modified with carbon and nitrogen species such as carbodiimide, nitrile and melem/melon structures (carbon nitride polymers: CNP). The CN/TiO2 photocatalyst was applied to hydrogen production from glycerine aqueous solutions under visible light irradiation. The origin of the visible-light response for the CN/TiO2 as well as the reaction mechanism was characterized by XPS, FT-IR, electrochemical measurements and DFT calculations, and it was confirmed that highly dispersed CNP linked to the TiO2 surface play a significant role in the effective charge separation for the visible-light responsive photocatalytic reactions.
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