Tuning of Gate Opening of an Elastic Layered Structure MOF in CO2 Sorption with a Trace of Alcohol Molecules

被引：52

作者：

Cheng, Yan ^{[1
]}

Kajiro, Hiroshi ^{[2
]}

Noguchi, Hiroshi ^{[1
]}

Kondo, Atsushi ^{[3
]}

Ohba, Tomonori ^{[1
]}

Hattori, Yoshiyuki ^{[4
]}

Kaneko, Katsumi ^{[5
]}

Kanoh, Hirofumi ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Sci, Inage Ku, Chiba 2638522, Japan

[2] Nippon Steel Corp Ltd, Chiba 2938511, Japan

[3] Tokyo Univ Agr & Technol, Tokyo 1838538, Japan

[4] Shinshu Univ, Fac Text Sci & Technol, Ueda, Nagano 3868567, Japan

[5] Shinshu Univ, Exot Nanocarbon Res Ctr, Nagano 3808553, Japan

来源：

LANGMUIR | 2011年 / 27卷 / 11期

关键词：

COORDINATION-POLYMER; CLATHRATE-FORMATION; CU-MOF; ADSORPTION;

D O I：

10.1021/la201008v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

It is important to tune the sorption behavior of metal organic framework (MOF) materials. Ethanol treatment on the hydrated form of [Cu(bpy)(2)(BF4)(2)], which is a representative flexible MOF showing the fascinating gate phenomenon on CO2 sorption, induces an easier dehydration and a significant decrease in the CO2 gate pressure. The results of IR, X-ray diffraction (XRD), and X-ray absorption fine structure (XAFS) measurements indicated that water molecules in the lattice of the hydrated form can be removed even at room temperature after the ethanol treatment and the basic 2D layered structure remains with a slight interlayer expansion. The results of thermogravimetric (TG) and gas chromatograph/mass spectrometry (GC/MS) analyses and of CO2 sorptions indicated that the change of the gate phenomenon was caused by a trace of residual ethanol molecules included in the structure. Similar phenomena were observed on alcohols with different polarity and molecular size.

引用

页码：6905 / 6909

页数：5

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