2017 Fiscal Year Final Research Report
Development of highly-active water splitting photocatalyst for solar hydrogen generation
| Project/Area Number |
16K17944
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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 |
Energy-related chemistry
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| Research Institution | Tokyo Metropolitan University (2017)
The University of Tokyo (2016) |
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Principal Investigator |
GOTO Yosuke 首都大学東京, 理工学研究科, 特任研究員 (60760783)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 水分解光触媒 |
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| Outline of Final Research Achievements |
We have investigated the detailed synthesis condition of novel oxysulfide La2Ta2ZrS2O8 for highly-active water splitting photocatalyst. We show La2Ta2ZrS2O8 phase was obtained by sulfurization of amorphous oxide precursor at relatively low temperature, 850 degC. This shows comparable water splitting activity to that obtained using conventional solid state reactions.
In addition, we also developed highly-active Al-doped SrTiO3 photocatalyst. SrCl2 flux-treated SrTiO3 with Al2O3 additive shows the quantum efficiency of 56% at 365 nm. Solar-to-hydrogen conversion efficiency of this photocatalyst reaches 0.6% under simulated sunlight.
A particulate ZnSe-CIGS photocathode was also investigated. This photocathode modified with CdS and ZnS was capable of utilizing photons up to 900 nm, while the onset potential was evaluated to be as high as 0.8 V vs. RHE.
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| Free Research Field |
固体物理、固体化学
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