Systematic heterogeneous design of Cu catalysts for CO2 electroreduction towards highly value-added products
| Project/Area Number |
21K14721
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 36020:Energy-related chemistry
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| Research Institution | Kyushu University |
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Principal Investigator |
Song Juntae 九州大学, 工学研究院, 助教 (10865348)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Project Status |
Granted (Fiscal Year 2022)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | electrocatalyst / CO2 reduction / MOF / Bi catalysts / Electrocatalysts / metal catalysts |
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| Outline of Research at the Start |
This work target to systematically design heterogeneous Cu-based catalysts for electrochemical CO2 reduction to value-added products. We propose novel structure of catalytic materials with highly porous materials and Cu metal catalysts for facile CO2 activation and improved C-C coupling.
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| Outline of Annual Research Achievements |
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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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
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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| Strategy for Future Research Activity |
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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Report
(2 results)
Research Products
(5 results)
