| 研究課題/領域番号 |
21K14721
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| 研究機関 | 九州大学 |
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研究代表者 |
Song Juntae 九州大学, 工学研究院, 助教 (10865348)
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| 研究期間 (年度) |
2021-04-01 – 2024-03-31
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| キーワード | electrocatalyst / CO2 reduction / MOF / Bi catalysts |
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| 研究実績の概要 |
As this project aims to achieve efficient electrocatalysts for CO2 reduction with strategies using porous materials as supporting materials to boost total CO2 conversion. Up to now, we established high CO2 conversion with Zr-MOF support for Bi catalyst to generate formic acid production.
In detail, as we successfully coupled UiO-66 with Bi particles, we deeply investigated the reason for the improvement in this research period. According to Raman, XPS and FTIR analysis, carbonate concentration should be increased at Zr site, resulting in higher CO2 utilization for Bi catalysts.
However, we still have challenging issues regarding the stability. Due to Zr-MOF's structural evolution under strong alkaline condition, as the electrolysis time goes, CO2-reducing current density is gradually decreased. Thus, we are on-going to solve the stability and make clear the specific reason for improved activity.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
After changing the strategy with MOF supporting materials due to failure with Cu catalysts on boron carbon nitride, we successfully demonstrated the improved CO2 conversion with Bi catalysts. Even though it is not firstly planned, it is also significant for design principal of electrocatalyst with high CO2 conversion. In the final year of research, I will continue to clarify not only the mechanism, but also apply same strategy for multi-carbon production.
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| 今後の研究の推進方策 |
In the next phase, the efforts to explain why CO2 conversion rate is increased with Zr-MOF will be carried out with model catalyst like Bi/ZrO2. Due to the unstability of MOF structure during electrolysis, I will focus on the catalysts surface with in situ spectroscopic technology (Raman). Then, to expand the application, I will also continue to find new catalysts materials to produce highly value-added chemicals (C2+) with Cu, Ni, etc.
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| 次年度使用額が生じた理由 |
We still have enough materials for catalyst synthesis. Accordingly, some amount of budgets are remained to be used next fiscal year. In the next year, it will be used for buying additional chemicals, presentation in international conference, etc.
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