Hierarchically porous UiO-66 with tunable mesopores and oxygen vacancies for enhanced arsenic removal
文献类型：期刊论文
| 作者 | Xu, Rongming; Ji, Qinghua ; Zhao, Pin; Jian, Meipeng; Xiang, Chao; Hu, Chengzhi; Zhang, Gong; Tang, Chaochun; Liu, Ruiping; Zhang, Xiwang
|
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2020-04-28 |
| 卷号 | 8期号:16页码:7870-7879 |
| ISSN号 | 2050-7488 |
| 英文摘要 | Metal-organic frameworks (MOFs) have attracted increasing interest for adsorption applications due to their ultrahigh porosity and specific surface area. However, their adsorption performance in liquids, particularly for water treatment, is significantly limited by the poor accessibility of micropores inside the MOF matrix to most molecules and deficient active sites. Herein, we use a facile strategy, ligand selective thermolysis, to create oxygen vacancies and construct mesopores in water stable UiO-66. The obtained hierarchically porous UiO-66 (HP-UiO-66) has tunable oxygen vacancies and mesopores, and outperforms the state-of-the-art MOF based adsorbents reported so far in removing arsenic, achieving an ultrahigh adsorption capacity of 248.75 mg g(-1) under neutral conditions. Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) analysis and density functional theory (DFT) calculations reveal that arsenic is mainly captured by forming bidentate Zr-O-As bonds between arsenate and HP-UiO-66 via occupying coordinatively unsaturated zirconium atoms. This study offers a new strategy for designing ultrahigh performance MOF based adsorbents. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45042]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 推荐引用方式 GB/T 7714 | Xu, Rongming,Ji, Qinghua,Zhao, Pin,et al. Hierarchically porous UiO-66 with tunable mesopores and oxygen vacancies for enhanced arsenic removal[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8(16):7870-7879. |
| APA | Xu, Rongming.,Ji, Qinghua.,Zhao, Pin.,Jian, Meipeng.,Xiang, Chao.,...&Qu, Jiuhui.(2020).Hierarchically porous UiO-66 with tunable mesopores and oxygen vacancies for enhanced arsenic removal.JOURNAL OF MATERIALS CHEMISTRY A,8(16),7870-7879. |
| MLA | Xu, Rongming,et al."Hierarchically porous UiO-66 with tunable mesopores and oxygen vacancies for enhanced arsenic removal".JOURNAL OF MATERIALS CHEMISTRY A 8.16(2020):7870-7879. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。