合成后的金属有机框架的修改,以形成含金属的MOF材料
Abraham M Shultz1, Amy A Sarjeant, Omar K Farha
1Department of Chemistry and Institute for Catalysis in Energy Processes, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|July 21, 2011
概括
研究人员通过去除和替换离子来修改 (III) 盐基金属有机框架 (MOF). 由此产生的材料保持了类似的催化活性和多孔性,证明了多功能MOF修饰策略.
科学领域:
- 材料科学 材料科学 材料科学
- 协调化学 协调化学
- 纳米技术 纳米技术
背景情况:
- 金属有机框架 (MOF) 为各种应用提供可调节的特性.
- 基于盐的MOF是一种具有潜在催化用途的功能材料.
- 合成后的修改允许对MOF特性进行微调.
研究的目的:
- 开发一种方法,用于合成后修改 (III) 盐基MOF (Mn (III) SO-MOF).
- 为了研究salen支架的重金属化与各种金属前体.
- 评估修改MOF的结构完整性,多孔性和催化活性.
主要方法:
- 制备的Mn(III) SO-MOF. 的制备.
- 使用过氧化 (H2O2) 进行Mn(III) SO-MOF的脱.
- 与不同的金属前体进行重金属化,以形成MSO-MOF材料.
- 使用感应合等离子光辐射光谱法 (ICP-OES),矩阵辅助激光溶解/电离-飞行质谱法 (MALDI-TOF MS),粉末X射线衍射法 (PXRD) 和热重力分析法 (TGA) 的表征.
主要成果:
- 一系列基于金属的同结构MOF (MSO-MOF) 通过合成后修改成功合成.
- 新金属离子在萨伦支架中的成功整合得到了ICP-OES,MALDI-TOF MS,PXRD和TGA的证实.
- 重金属化Mn(II) SO-MOF表现出与母Mn(III) SO-MOF相比较的催化活性和多孔性.
结论:
- 合成后的修改提供了一条可行的途径,可以创建各种基于金属的MOF.
- 开发的方法允许保留关键的材料特性,如多孔性和催化功能.
- 这一策略为设计具有定制金属中心的功能MOF提供了一条途径.
更多相关视频
04:51Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
06:48Synthesis and Characterization of Self-Assembled Metal-Organic Framework Monolayers Using Polymer-Coated Particles
Published on: June 14, 2024
相关概念视频
01:23Properties of Organometallic Compounds
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
02:51Metal-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...
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...