期刊論文
| 學年 | 111 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2023-06-19 |
| 作品名稱 | Surface adsorbed hydroxyl: a double-edged sword in electrochemical CO2 reduction over oxide-derived copper |
| 作品名稱（其他語言） | |
| 著者 | D. Wei, Y. Wang, C. L. Dong, T. T. T. Nga, Y. Shi, J. Wang, X. Zhao, F. Dong, S. Shen |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Angewandte Chemie 2023, 62, e202306876 |
| 摘要 | Oxide-derived Cu (OD−Cu) featured with surface located sub-20 nm nanoparticles (NPs) created via surface structure reconstruction was developed for electrochemical CO2 reduction (ECO2RR). With surface adsorbed hydroxyls (OHad) identified during ECO2RR, it is realized that OHad, sterically confined and adsorbed at OD−Cu by surface located sub-20 nm NPs, should be determinative to the multi-carbon (C2) product selectivity. In situ spectral investigations and theoretical calculations reveal that OHad favors the adsorption of low-frequency *CO with weak C≡O bonds and strengthens the *CO binding at OD−Cu surface, promoting *CO dimerization and then selective C2 production. However, excessive OHad would inhibit selective C2 production by occupying active sites and facilitating competitive H2 evolution. In a flow cell, stable C2 production with high selectivity of ∼60 % at −200 mA cm−2 could be achieved over OD−Cu, with adsorption of OHad well steered in the fast flowing electrolyte. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 1433-7851; 1521-3773 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | DEU |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/125585 ) |