Talk:Zeolitic imidazolate framework

Untitled
This page needs more applicable content. Also, the relationship between ZIFs and Metal Organic Frameworks needs to be established ( I believe ZIFs are a subclass of MOFs ). If I study this topic more, I will come back and update. Michael Wise (talk) 07:27, 10 November 2009 (UTC)


 * Hello, I'm a student editor (User:myenccs) in a class on carbon capture and sequestration. My group and I are planning on increasing the content of this page.  ZIFs are indeed a subclass of MOFs. They are notable for having exceptional stability (like zeolites tend to do).  In terms of details, I see opportunities to summarize how ZIFs are distinct from MOFs, including pros and cons, how they are synthesized, and some data on recent progress/results. There appear to be a few notable ZIF species, although literature seems to drop off after 2014 compared to MOFs in general.  For the lead section, we could add a couple sentences regarding their current main applications (either in research or in deployment).-- Myenccs (talk) 00:25, 22 April 2017 (UTC)


 * see below for planned additions --

Wiki Education Foundation-supported course assignment
This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Myenccs, Lstrong8522, LaniHack, Rrahul24. Peer reviewers: JoseZZ, Lorenzorosa92, Sdhamilton, Parkerjones3.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 05:26, 18 January 2022 (UTC)

Synthesis (Carbon Capture and Sequestration Spring 2017 Class)
The synthesis of porous ZIFs generally consists of combining a hydrated metal salt, ImH species (imidazole with acidic proton), an amide solvent, and heat. The heat degrades the amide solvent to generate an amine, which deprotonates the imidazole and allows it to participate as a structural ligand to the metal. With the right heating conditions, molar ratios, and concentrations, this solvothermal process is ideal for generating monocrystalline materials for single-crystal X-ray diffraction. Common amide solvents include N,N-dimethylformamide, N,N-diethylformamide, and N-methylpyrrolidine. Functionalized ImH linkers allow for control of ZIF topology. Bases such as pyridine, TEA, and NaOH can also facilitate ZIF formation. Methanol, ethanol, and isopropanol have also been explored as alternative organic solvents for ZIF formation, while additives including sodium formate and poly-(diallyldimethylammonium chloride) allow control over size, yield, and speed of crystal formation. Sonication, which leverages acoustic cavitation, has been seen to improve crystal nucleation speed and homogeneity.

As a non-toxic and non-flammable solvent, water has been of interest in ZIF synthesis. In its simplest incarnations, water-based synthesis of ZIFs involves mixing zinc nitrate solution with imidazole solution at room temperature, and collecting the products by centrifugation. As in the case of organic solvents, the addition of triethylamine and ammonium hydroxide as deprotonating agents can facilitate ZIF formation. Water-soluble polymers such as poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) (PEO–PPO–PEO) and polyvinylpyrrolidone (PVP) can act as crystal dispersants, resulting in improved morphology outcomes in aqueous systems.

Ionic liquids have also been explored for ZIF synthesis. Ionic liquids can act as both solvents and templates, while being non-flammable, recyclable, and of low vapor pressure. Two such ionic liquids include 1-ethyl-3-methylimidazolium bis[(triuoromethyl) sulfonyl]imide, and  1-butyl-3- methyl-imidazolium tetrauoroborate.

Hello, I am also a student and recently added two sections to the page --> ZIFs versus MOFs and ZIFS vs commercially available products. I did this mostly to show the divide between the two materials, despite the fact that ZIFs are a subset of MOFs. I also wanted to showcase the key advantages ZIFs have over MOFs in carbon capture. -- Lstrong8522 (talk) 09:31, 3 May 2017 (UTC)

Peer Review
This addition is very thorough, but becomes bogged down in names of specific chemicals and substances. Providing a few examples is helpful, but consider significantly reducing the number of chemical/substance names that are present, as they overshadow the actual content. -- Parkerjones3

Comparing ZIFs with Other Compounds
To quote from WP:OR: "Wikipedia articles must not contain original research. The phrase "original research" (OR) is used on Wikipedia to refer to material—such as facts, allegations, and ideas—for which no reliable, published sources exist.[1] This includes any analysis or synthesis of published material that serves to reach or imply a conclusion not stated by the sources...."--Smokefoot (talk) 15:07, 6 May 2017 (UTC)