Anhydrous solid-gas-phase photocatalytic reaction - development of an innovative process for carbon dioxide recycles

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K15665
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 36020:Energy-related chemistry
• Research Institution: Hokkaido University
• Principal Investigator: Takashima Mai 北海道大学, 触媒科学研究所, 助教 (10772345)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 光触媒 / 二酸化炭素資源化 / 多電子移動反応 / 銀化合物

Outline of Final Research Achievements

In this study, I aimed to develop an "anhydrous solid-gas-phase" chemical process that could be a breakthrough for the practical application of carbon dioxide recycles. I have focused on silver(I) oxide as a mediator that reacts with gaseous carbon dioxide, have tried to demonstrate “silver(I) oxide-silver carbonate-silver metal-silver oxide” cycle. However, the “silver carbonate to silver metal” process, which is the most important cycle, was not realized.

Free Research Field

光触媒

Academic Significance and Societal Importance of the Research Achievements

提案にした銀化合物サイクルの実現は叶わなかったが，多電子移動反応では照射光強度により反応メカニズムが変化すること，また，十分に入射光子が担保されればこれまで反応が進行しないと思われていた反応でも進行することがわかったことは非常に重要な知見であり，この知見は太陽光を用いた人工光合成技術をはじめとするエネルギー問題解決技術の一端をになう可能性があると考えている．