Bicarbonate Rebalances the *COOH/*OCO- Dual Pathways in CO2 Electrocatalytic Reduction: In Situ Surface-Enhanced Raman Spectroscopic Evidence
文献类型：期刊论文
| 作者 | Shan, Wanyu; Liu, Rui ; Zhao, Huachao; Liu, Jingfu
|
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2022-08-04 |
| 卷号 | 13期号:13页码:7296-7305 |
| 关键词 | CARBON-DIOXIDE ELECTROCHEMICAL REDUCTION COPPER CONVERSION ELECTROREDUCTION ELECTRODES MODE |
| ISSN号 | 1948-7185 |
| 英文摘要 | Understanding the reactive site/CO2/electrolyte interfacial behaviors is very crucial for the design of an advantageous CO2 electrocatalytic reduction (CO2ER) system. One important but unrevealed question is how the CO2ER process is influenced by the high concentration of HCO3- , which is deliberately added as electrolyte or from the inevitable reaction between dissolved CO2 and OH-. Here, we provide unambiguous in situ spectroscopic evidence that on Ag-based catalysts, HCO3- is apt to facilitate *OCO- generation and therefore rebalances CO2ER pathways. By employing an alternative acid electrolyte to restrict the exchange between CO2 and HCO3- and eliminating the effect of solution pH, we reveal that HCO3- can decrease the onset potential of *OCO- and promote further formate production. Theoretical calculations indicate HCO3- can stabilize the adsorption of *OCO- instead of *COOH. The renewed understanding of the role of HCO3- could facilitate the judicious selection of electrolytes to regulate the CO2ER pathway and product distribution. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47475]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.UCAS, Hangzhou Inst Adv Study, Sch Environm, Hangzhou 310024, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shan, Wanyu,Liu, Rui,Zhao, Huachao,et al. Bicarbonate Rebalances the *COOH/*OCO- Dual Pathways in CO2 Electrocatalytic Reduction: In Situ Surface-Enhanced Raman Spectroscopic Evidence[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2022,13(13):7296-7305. |
| APA | Shan, Wanyu,Liu, Rui,Zhao, Huachao,&Liu, Jingfu.(2022).Bicarbonate Rebalances the *COOH/*OCO- Dual Pathways in CO2 Electrocatalytic Reduction: In Situ Surface-Enhanced Raman Spectroscopic Evidence.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,13(13),7296-7305. |
| MLA | Shan, Wanyu,et al."Bicarbonate Rebalances the *COOH/*OCO- Dual Pathways in CO2 Electrocatalytic Reduction: In Situ Surface-Enhanced Raman Spectroscopic Evidence".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 13.13(2022):7296-7305. |
入库方式： OAI收割
来源：生态环境研究中心
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