期刊論文
| 學年 | 113 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2024-09-23 |
| 作品名稱 | Synergy of nitrogen dopants and cobalt single atoms in calcium niobate nanosheets for photocatalytic oxygen evolution |
| 作品名稱（其他語言） | |
| 著者 | Sajjad ul Haq; Chung-Li Dong; Yu-Cheng Huang; Rana Moiz ur Rehman; Essossimna Djatoubai; Zhi Lin; Muhammad Shuaib Khan; Shaohua Shen |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Journal of Physics: Energy 6(4), 045002 |
| 摘要 | The successful separation of photoexcited charge carriers and their effective utilization are crucial for overcoming the slow kinetics of the four-electron process for photocatalytic oxygen evolution. Herein, a novel strategy utilizing urea as a source of N-doping on Ca2Nb3O10 nanosheets is adopted, followed by the successful deposition of Co single atoms (Co-SAs) to achieve a synergistic effect. The presence of N-dopants and Co-SAs is validated via various experimental techniques. It is also observed that the presence of N-doping contributed towards the deposition of higher content of Co-SAs (0.21 wt%) in Ca2Nb3O10−xNx-CoSA nanosheets compared to 0.15 wt% for non-doped Ca2Nb3O10-CoSA. The optimized Ca2Nb3O10−xNx-CoSA nanosheets exhibited an impressive photocatalytic O2 evolution of ∼727.22 µmol g−1 h−1 via the synergy of N-dopants and Co-SAs. As a result, the O2 evolution response of Ca2Nb3O10−xNx-CoSA is 3.6 times higher than that of pristine Ca2Nb3O10 nanosheets (201.26 µmol g−1 h−1), 2.24 times better than Ca2Nb3O10−xNx nanosheets (323.42 µmol g−1 h−1), and 1.77 times higher compared to Ca2Nb3O10-CoSA, (409.33 µmol g−1 h−1), which clearly demonstrated the synergistic effect of N-dopants and Co-SAs in Ca2Nb3O10−xNx-CoSA nanosheets. Based on the findings of various characterization techniques, the co-presence of N-dopants and Co-SAs is observed to contribute towards better charge carrier separation, and utilization to achieve superior photocatalytic response. Thus, this study presents a novel approach for incorporating N-dopants and Co-SAs on Ca2Nb3O10 nanosheets, which can be extended to a wide range of nanosheets produced by the soft chemical exfoliation method. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 2515-7655 |
| 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/987654321/127605 ) |