Chemical induced fragmentation of MOFs for highly efficient Ni-based hydrogen evolution catalysts
文献类型：期刊论文
| 作者 | Wang, Teng; Jin, Rumei; Wu, Yong; Zheng, Jie; Li, Xingguo |
| 刊名 | NANOSCALE HORIZONS
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 3期号:2页码:218-225 |
| ISSN号 | 2055-6756 |
| DOI | 10.1039/c7nh00193b |
| 英文摘要 | A highly efficient catalyst for the hydrogen evolution reaction (HER) composed of Ni nanoparticles encapsulated in thin layers of N-doped carbon (Ni@NC) can be obtained by NH3 induced fragmentation of a Ni based MOF at mild temperature (450 degrees C). A mechanistic study shows that the high chemical reactivity of NH3 causes ammonolysis of the ligands and allows ligand removal well below their carbonization temperature. In conventional thermal decomposition in Ar, metal-ligand bond dissociation and ligand carbonization occurs in the same temperature region, resulting in a catalyst with high carbon content and much poorer HER performance. We further improve the HER performance by combining the NH3 induced fragmentation and destabilization of the Ni-MOF structure by low levels of Co substitution, which results in smaller, more uniform catalyst particles. Using the noble metal free HER catalyst, an overall solar-to-hydrogen efficiency of 7.9% is achieved in an electrolyzer driven by a commercial polycrystalline solar cell with an efficiency of 12.9%. |
| 语种 | 英语 |
| WOS记录号 | WOS:000433439100005 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42857]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zheng, Jie; Li, Xingguo |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, BNLMS, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Teng,Jin, Rumei,Wu, Yong,et al. Chemical induced fragmentation of MOFs for highly efficient Ni-based hydrogen evolution catalysts[J]. NANOSCALE HORIZONS,2018,3(2):218-225. |
| APA | Wang, Teng,Jin, Rumei,Wu, Yong,Zheng, Jie,&Li, Xingguo.(2018).Chemical induced fragmentation of MOFs for highly efficient Ni-based hydrogen evolution catalysts.NANOSCALE HORIZONS,3(2),218-225. |
| MLA | Wang, Teng,et al."Chemical induced fragmentation of MOFs for highly efficient Ni-based hydrogen evolution catalysts".NANOSCALE HORIZONS 3.2(2018):218-225. |
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来源：化学研究所
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