Effect of Functional Groups on the I2 Sorption Kinetics of Isostructural Metal–Organic Frameworks

Byeongchan Lee; Jinhee Park

doi:10.1002/bkcs.12201

Effect of Functional Groups on the I₂ Sorption Kinetics of Isostructural Metal–Organic Frameworks

Byeongchan Lee, Jinhee Park

Department of Physics and Chemistry

Daegu Gyeongbuk Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

In this work, the effect of functional groups on I₂ sorption kinetics is investigated using two different types of isostructural metal-organic frameworks, UiO-66-X series (X = H, Br, NO₂, NH₂, (OH)₂, and (COOH)₂) and M₂(m-DOBDC) series, (M = Co2+, Mg2+, and Ni2+; m-DOBDC⁴⁻ = 4,6-dioxo-1,3-benzenedicarboxylate). Among the UiO-66-X series, UiO-66-(COOH)₂ exhibits the fastest sorption kinetics and the highest sorption capacity due to dipole-induced dipole interactions between carboxylic acid groups and I₂ molecules. In addition, faster I₂ chemisorption is observed in M₂(m-DOBDC) because of electrophilic aromatic substitution of m-DOBDC⁴⁻ with I₂. The I₂ sorption mechanisms are further supported by fitting the I₂ adsorption kinetics data to pseudo-first-order and pseudo-second-order kinetic models.

Original language	English
Pages (from-to)	290-293
Number of pages	4
Journal	Bulletin of the Korean Chemical Society
Volume	42
Issue number	2
DOIs	https://doi.org/10.1002/bkcs.12201
State	Published - Feb 2021

Bibliographical note

Publisher Copyright:
© 2021 Korean Chemical Society, Seoul & Wiley-VCH GmbH

Keywords

Functional group effects
Iodine capture
Metal–organic frameworks
Sorption kinetics

Access to Document

10.1002/bkcs.12201

Cite this

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title = "Effect of Functional Groups on the I2 Sorption Kinetics of Isostructural Metal–Organic Frameworks",

abstract = "In this work, the effect of functional groups on I2 sorption kinetics is investigated using two different types of isostructural metal-organic frameworks, UiO-66-X series (X = H, Br, NO2, NH2, (OH)2, and (COOH)2) and M2(m-DOBDC) series, (M = Co2+, Mg2+, and Ni2+; m-DOBDC4− = 4,6-dioxo-1,3-benzenedicarboxylate). Among the UiO-66-X series, UiO-66-(COOH)2 exhibits the fastest sorption kinetics and the highest sorption capacity due to dipole-induced dipole interactions between carboxylic acid groups and I2 molecules. In addition, faster I2 chemisorption is observed in M2(m-DOBDC) because of electrophilic aromatic substitution of m-DOBDC4− with I2. The I2 sorption mechanisms are further supported by fitting the I2 adsorption kinetics data to pseudo-first-order and pseudo-second-order kinetic models.",

keywords = "Functional group effects, Iodine capture, Metal–organic frameworks, Sorption kinetics",

author = "Byeongchan Lee and Jinhee Park",

note = "Publisher Copyright: {\textcopyright} 2021 Korean Chemical Society, Seoul \& Wiley-VCH GmbH",

year = "2021",

month = feb,

doi = "10.1002/bkcs.12201",

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AU - Lee, Byeongchan

AU - Park, Jinhee

PY - 2021/2

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N2 - In this work, the effect of functional groups on I2 sorption kinetics is investigated using two different types of isostructural metal-organic frameworks, UiO-66-X series (X = H, Br, NO2, NH2, (OH)2, and (COOH)2) and M2(m-DOBDC) series, (M = Co2+, Mg2+, and Ni2+; m-DOBDC4− = 4,6-dioxo-1,3-benzenedicarboxylate). Among the UiO-66-X series, UiO-66-(COOH)2 exhibits the fastest sorption kinetics and the highest sorption capacity due to dipole-induced dipole interactions between carboxylic acid groups and I2 molecules. In addition, faster I2 chemisorption is observed in M2(m-DOBDC) because of electrophilic aromatic substitution of m-DOBDC4− with I2. The I2 sorption mechanisms are further supported by fitting the I2 adsorption kinetics data to pseudo-first-order and pseudo-second-order kinetic models.

AB - In this work, the effect of functional groups on I2 sorption kinetics is investigated using two different types of isostructural metal-organic frameworks, UiO-66-X series (X = H, Br, NO2, NH2, (OH)2, and (COOH)2) and M2(m-DOBDC) series, (M = Co2+, Mg2+, and Ni2+; m-DOBDC4− = 4,6-dioxo-1,3-benzenedicarboxylate). Among the UiO-66-X series, UiO-66-(COOH)2 exhibits the fastest sorption kinetics and the highest sorption capacity due to dipole-induced dipole interactions between carboxylic acid groups and I2 molecules. In addition, faster I2 chemisorption is observed in M2(m-DOBDC) because of electrophilic aromatic substitution of m-DOBDC4− with I2. The I2 sorption mechanisms are further supported by fitting the I2 adsorption kinetics data to pseudo-first-order and pseudo-second-order kinetic models.

KW - Functional group effects

KW - Iodine capture

KW - Metal–organic frameworks

KW - Sorption kinetics

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