中心金属离子改变诱导MOFs结构和光催化性能的改变 |
Structural Differences of Two MOFs Adjusted by Central Metal Ions Inducing Different Photodegradation Efficiencies |
|
摘要: 在相同的水热条件下,铜盐、钴盐分别和配体H2PPCA(H2PPCA=5-pyrazin-2-yl-1H-pyrazole-3-carboxylic acid)发生反应,生成了2个结构截然不同的金属有机配合物,分别是[Cu(PPCA)(H2O)]·H2O(HPU-7)和{[Co(PPCA)(H2O)]·H2O}n(HPU-8)。HPU-7是由CuCl2·2H2O与配体在160℃下反应而成的,它呈现出零维的双核铜单元结构。HPU-8是由Co(NO3)2·6H2O与配体在160℃下反应生成的,它呈现出由双核钴单元与配体的骨架相连而成的4,4-连接的二维层结构。中心金属离子的改变导致了不同结构MOF的形成,并且它们的电化学性能研究表明它们是很好的半导体材料,它们都对亚甲基蓝(MB)具有较好的光催化效果。 |
关键词: 双核簇 2D层 结构变化 光催化 |
基金项目: 国家自然科学基金(No.21601050)资助。 |
Abstract: By Reactions of Cu(Ⅱ), Co(Ⅱ) with H2PPCA ligand (H2PPCA=5-pyrazin-2-yl-1H-pyrazole-3-carboxylic acid) in the same hydrothermal conditions resulted in two distinct structural metal-organic frameworks (MOFs), namely,[Cu(PPCA)(H2O)]·H2O (HPU-7) and {[Co(PPCA)(H2O)]·H2O}n (HPU-8). HPU-7 that obtained from CuCl2·2H2O at 160℃ is a dinuclear cluster based on Cu(Ⅱ) ions and PPCA2- ligands. HPU-8 synthesized by Co(NO3)2·6H2O at 160℃ exhibits a 4,4-connected 2D layer connected by dinuclear Co(Ⅱ) clusters and the skeletons of the PPCA2- ligands. The structural differences are dependent on the coordination geometries of central metal ions. And due to the structural differences, the two complexes display different photodegradation efficiencies toward methylene blue (MB). |
Keywords: dinuclear cluster 2D layer structural differences photodegradation efficiency |
投稿时间:2017-09-22 修订日期:2017-12-14 |
摘要点击次数: 2053 |
全文下载次数: 1588 |
李慧军,何亚玲,张宁,李晴晴,徐周庆,王元.中心金属离子改变诱导MOFs结构和光催化性能的改变[J].无机化学学报,2018,34(3):560-568. |
查看全文 查看/发表评论 下载PDF阅读器 |
Support information: |
|
|
|