Improvement of Electrochemical Water Oxidation by Fine-Tuning the Structure of Tetradentate N-4 Ligands of Molecular Copper Catalysts
文献类型：期刊论文
| 作者 | Han, Hongxian3; Liu, Hong1; Sun, Licheng1,4; Shen, Junyu1; Wang, Mei1; Gao, Jinsuo2 |
| 刊名 | CHEMSUSCHEM
 |
| 出版日期 | 2017-11-23 |
| 卷号 | 10期号:22页码:4581-4588 |
| 关键词 | Copper Electrocatalysis Homogeneous Catalysis n Ligands Water Oxidation |
| ISSN号 | 1864-5631 |
| DOI | 10.1002/cssc.201701458 |
| 文献子类 | Article |
| 英文摘要 | Two copper complexes, [(L1)Cu(OH2)](BF4)(2) [1; L1 = N,N'-dimethyl-N,N'-bis(pyridin-2-ylmethyl)-1,2-diaminoethane] and [(L2)Cu(OH2)](BF4)(2) [2, L2 = 2,7-bis(2-pyridyl)-3,6-diaza-2,6-octadiene], were prepared as molecular water oxidation catalysts. Complex 1 displayed an overpotential (eta) of 1.07V at 1 mAcm(-2) and an observed rate constant (k(obs)) of 13.5 s(-1) at eta 1.0 V in pH 9.0 phosphate buffer solution, whereas 2 exhibited a significantly smaller eta (0.70 V) to reach 1 mAcm(-2) and a higher k(obs) (50.4 s(-1)) than 1 under identical test conditions. Additionally, 2 displayed better stability than 1 in controlled potential electrolysis experiments with a faradaic efficiency of 94% for O-2 evolution at 1.58 V, when a casing tube was used for the Pt cathode. A possible mechanism for 1- and 2-catalyzed O-2 evolution reactions is discussed based on the experimental evidence. These comparative results indicate that fine-tuning the structures of tetradentate N-4 ligands can bring about significant change in the performance of copper complexes for electrochemical water oxidation. |
| WOS关键词 | NEUTRAL AQUEOUS-SOLUTION ; CU-II COMPLEXES ; ELECTROCATALYST ; BASE ; PH ; COORDINATION ; REDUCTION ; PATHWAYS ; CORROLES ; METALS |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000416158500035 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/169262]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Wang, Mei |
| 作者单位 | 1.Dalian Univ Technol, DUT KTH Joint Educ & Res Ctr Mol Devices, State Key Lab Fine Chem, Dalian 116024, Peoples R China 2.Dalian Univ Technol, Sch Environm Sci & Technol, Dalian 116024, Peoples R China 3.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 4.KTH Royal Inst Technol, Dept Chem, S-10044 Stockholm, Sweden |
| 推荐引用方式 GB/T 7714 | Han, Hongxian,Liu, Hong,Sun, Licheng,et al. Improvement of Electrochemical Water Oxidation by Fine-Tuning the Structure of Tetradentate N-4 Ligands of Molecular Copper Catalysts[J]. CHEMSUSCHEM,2017,10(22):4581-4588. |
| APA | Han, Hongxian,Liu, Hong,Sun, Licheng,Shen, Junyu,Wang, Mei,&Gao, Jinsuo.(2017).Improvement of Electrochemical Water Oxidation by Fine-Tuning the Structure of Tetradentate N-4 Ligands of Molecular Copper Catalysts.CHEMSUSCHEM,10(22),4581-4588. |
| MLA | Han, Hongxian,et al."Improvement of Electrochemical Water Oxidation by Fine-Tuning the Structure of Tetradentate N-4 Ligands of Molecular Copper Catalysts".CHEMSUSCHEM 10.22(2017):4581-4588. |
入库方式： OAI收割
来源：大连化学物理研究所
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