Channel-wall functionalization in covalent organic frameworks for the enhancement of CO2 uptake and CO2/N-2 selectivity
文献类型：期刊论文
| 作者 | Zhao, Shang1,2; Ma, Wei1; Wang, Yu2; Hao, Ce3; Guo, Xinwen3; Gao, Yanan2; Dong, Bin2; Ge, Rile2; Wang, Chang2; Song, Xuedan3 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:45页码:38774-38781 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c6ra04859e |
| 文献子类 | Article |
| 英文摘要 | A series of tailored covalent organic frameworks (COFs), i.e. [N=N](X%)-TAPH-COFs and [C=C](X%)-TAPH-COFs, were synthesized by post-fabrication of [HO](X%)-TAPH-COFs with 4-phenylazobenzoyl chloride (PhAzo) and 4-stilbenecarbonyl chloride (PhSti), respectively. Powder X-ray diffraction (PXRD), FT-IR, and solution-state H-1 NMR of the digested COFs were applied to clarify the functional groups integrated in the pore channels. Gas sorption isotherms confirmed that the [N=N](X%)-TAPH-COFs and [C=C](X%)-TAPH-COFs had moderate surface areas, narrow pore sizes, and good physicochemical stability. Compared with [C=C](X%)-TAPH-COFs, the [N=N](X%)-TAPH-COFs exhibited higher CO2 uptake capacities of up to 207 mg g(-1) (273 K and 1 bar), isosteric heats of adsorption for CO2 (30.7-43.4 kJ mol(-1)), and CO2/N-2 selectivities of up to 78 (273 K) because of the dipole interactions between the azo group and CO2 as well as the N-2-phobic behavior of the azo group. Furthermore, although the decreased pore size was advantageous for increasing CO2 adsorption, the decreased surface area of the COFs would undoubtedly decrease CO2 adsorption if too many functional groups were introduced. |
| WOS关键词 | CARBON-DIOXIDE CAPTURE ; GAS-STORAGE APPLICATIONS ; EXCEPTIONALLY HIGH CO2 ; ADSORPTION ; POLYMER ; IMINE |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000374972800035 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/170840]  |
| 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 | Gao, Yanan |
| 作者单位 | 1.Dalian Univ Technol, Dept Chem, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Shang,Ma, Wei,Wang, Yu,et al. Channel-wall functionalization in covalent organic frameworks for the enhancement of CO2 uptake and CO2/N-2 selectivity[J]. RSC ADVANCES,2016,6(45):38774-38781. |
| APA | Zhao, Shang.,Ma, Wei.,Wang, Yu.,Hao, Ce.,Guo, Xinwen.,...&Song, Xuedan.(2016).Channel-wall functionalization in covalent organic frameworks for the enhancement of CO2 uptake and CO2/N-2 selectivity.RSC ADVANCES,6(45),38774-38781. |
| MLA | Zhao, Shang,et al."Channel-wall functionalization in covalent organic frameworks for the enhancement of CO2 uptake and CO2/N-2 selectivity".RSC ADVANCES 6.45(2016):38774-38781. |
入库方式： OAI收割
来源：大连化学物理研究所
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