每周分享:Selective anion exchange with nanogated isoreticular positive metal-organic frameworks

時間:2014-04-18    瀏覽:1511次

    今天給大家分享的是2013年8月份《Nature Communications》上發表的一篇名為:Selective anion exchange with nanogated isoreticular positive metal-organic frameworks,文章摘要如下:

Crystalline porous materials, especially inorganic porous solids such as zeolites, usually have negative frameworks with extra-framework mobile cations and are widely used for cation exchange. It is highly desirable to develop new materials with positive frameworks for selective anion exchange and separation or storage and delivery. Recent advances in metal-organic framework synthesis have created new opportunities in this direction. Here we report the synthesis of a series of positive indium metal-organic frameworks and their utilization as a platform for the anion exchange-based separation process. This process is capable of size- or charge-selective ion-exchange of organic dyes and may form the basis for size-selective ion chromatography. Ion-exchange dynamics of a series of organic dyes and their selective encapsulation and release are also studied, highlighting the advantages of metal-organic framework compositions for designing host materials tailored for applications in anion separation and purification.

該文章中材料表征采用的是美國麥克儀器ASAP 2020,使用該儀器獲得材料氮氣吸附脫附等溫線。

詳情可參考下面鏈接:

http://www.nature.com/ncomms/2013/130816/ncomms3344/full/ncomms3344.html?WT.ec_id=NCOMMS-20130821