期刊論文
| 學年 | 113 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2024-09-23 |
| 作品名稱 | Second coordination sphere modulation during water oxidation with metal-hydroxide organic frameworks |
| 作品名稱（其他語言） | |
| 著者 | Abhimanyu Yadav; Toufik Ansari; Pandian Mannu; Baghendra Singh; Ajit Kumar Singh; Yu-Cheng Huang; Vishal Kumar; Sanjay Singh; Chung-Li Dong; Arindam Indra |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Journal of Materials Chemistry A 12, p.29072-29080 |
| 摘要 | Herein, we have explored a NiFe-hydroxide organic framework (bridging ligand = chloranilic acid) for the electrochemical oxygen evolution reaction (OER). The anodic activation of the precatalyst forms the active catalyst (AC-2) consisting of Fe-doped α-Ni(OH)2–γ-Ni(O)OH having a second coordination sphere interaction with the ligand chloranilic acid. The spectroscopic studies established that AC-2 has a different electronic and local atomic structure compared to the active catalyst (AC-3) obtained from NiFe-layered double hydroxide (NiFe-LDH) by anodic activation. The short Ni–O bond, its optimized covalency and the presence of high valent Ni3+ and Fe3+ in AC-2 facilitated the O–O bond formation. Interestingly, the ligand chloranilic acid tuned the second coordination sphere (SCS) of the AC-2 to improve the charge transfer kinetics. AC-2 delivered 50 mA cm−2 current density for the OER at only 254 mV overpotential (η50OER) – far better than the other studied catalysts. The kinetic study reveals a primary kinetic isotope effect (KIE) in the rate-determining step (RDS) involving proton-coupled electron transfer (PCET) for AC-2. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 2050-7488 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 是 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/127583 ) |