相关实验视频

Updated: Jul 26, 2025

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

金属有机框架的网状合成由8连接的四边形镜连接体用于收集水

Wenbo Liu¹, Enyu Wu², Baoqiu Yu¹

¹Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.

Angewandte Chemie (International ed. in English)

|June 21, 2023

概括

新的基于的金属有机框架 (MOFs) 合成了8个碳酸基. ZrMOF-1表现出卓越的收集水能力和稳定性,使其成为收集水应用的理想选择.

科学领域:

材料科学材料科学材料科学
化学化学化学
纳米技术纳米技术

背景情况:

金属有机框架 (MOF) 的网状合成依赖于刚性,高度连接的有机链接器.
实现高度稳定的MOF,特别是基于Zr的MOF,其配体具有六个以上的协调功能仍然是一个挑战.

研究的目的:

使用刚性,多牙联体合成基于的新型MOF.
为了研究合成的MOFs的水收集特性和稳定性.

主要方法:

两种基于的MOF (ZrMOF-1和ZrMOF-2) 的合成,使用外围扩展的pentiptycene配体 (H8 PEP-1和H8 PEP-2).
描述MOF的结构和特性,包括Brunauer-Emmett-Teller (BET) 表面积和水稳定性.
评估吸水能力和吸附-脱附循环性能.
使用自相一致的电荷密度功能紧固结合 (SCC-DFTB) 计算的计算分析.

主要成果:

成功建造了两个基于Zr的MOF,即ZrMOF-1和ZrMOF-2.
ZrMOF-1具有微孔结构,具有较大的BET表面积和显著的水稳定性.
ZrMOF-1表现出高吸水能力 (0.83 gH2O/gMOF在P/P0=0.90),在相对湿度低的情况下迅速吸水 (P/P0=0.30),并且在500个循环中具有出色的耐用性.
计算研究合理化了水吸附机制和容量.

结论:

开发的pentiptycene连接物使得能够构建强大的,高度功能化的基于Zr的MOFs.
ZrMOF-1 是一种非常有前途的材料,可用于高效且耐用的收集水的应用.
这项研究提供了关于MOFs中水吸附的结构-属性关系的见解.

关键词:

8,8-c Bcu 拓学在 8,8-c Bcu 拓学高连接网络高连接网络金属有机框架 - 金属有机框架这是三维的三维空间.收集水资源收集水资源

更多相关视频

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange

Published on: June 23, 2023

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Published on: May 12, 2023

相关概念视频

Metal-Ligand Bonds

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...

Complexometric Titration: Ligands

Complexometric Titration: Ligands

Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...