A {Ni12}-wheel-based metal-organic framework for coordinative binding of sulphur dioxide and nitrogen dioxide

DOI: 10.1002/anie.202115585

Authors: Sihai Yang (University of Manchester) , Zongsu Han (Nankai University) , Jiangnan Li (University of Manchester) , Wanpeng Lu (University of Manchester) , Kunyun Wang (Nankai University) , Yinlin Chen (University of Manchester) , Xiaoping Zhang (Nankai University) , Longfei Lin (Beijing National Laboratory for Molecular Science, Key Laboratory of Colloid and Interface and Thermodynamics Institute of Chemistry, Chinese Academy of Sciences) , Xue Han (University of Manchester) , Simon Teat (Advanced Light Source) , Mark Frogley (Diamond Light Source) , Wei Shi (Nankai University) , Peng Cheng (Nankai University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Angewandte Chemie International Edition

State: Published (Approved)
Published: November 2021
Diamond Proposal Number(s): 23782

Abstract: Air pollutions by SO2 and NO2 have caused significant risks on the environment and human health. Understanding the mechanism of active sites within capture materials is of fundamental importance to the development of new clean-up technologies. Here we report the crystallographic observation of reversible coordinative binding of SO2 and NO2 on open Ni(II) sites in a metal-organic framework (NKU-100) incorporating an unprecedented {Ni 12 }-wheel, which exhibits six open Ni(II) sites on desolvation. Immobilised gas molecules are further stabilised by cooperative host-guest interactions comprised of hydrogen bonds, π ··· π interactions and dipole interactions. At 298 K and 1.0 bar, NKU-100 shows adsorption uptakes of 6.21 and 5.80 mmol g -1 for SO2 and NO2 , respectively. Dynamic breakthrough experiments have confirmed the selective retention of SO2 and NO2 at low concentrations under dry conditions. This work will inspire the future design of efficient sorbents for the capture of SO2 and NO2 .

Journal Keywords: metal-organic framework; SO2 and NO2 adsorption; binding site; in situ synchrotron single crystal X-ray diffraction

Diamond Keywords: Gas Separation

Subject Areas: Chemistry, Materials, Environment


Instruments: B22-Multimode InfraRed imaging And Microspectroscopy

Other Facilities: 12.2.1 at Advanced Light Source

Added On: 30/11/2021 10:43

Discipline Tags:

Desertification & Pollution Earth Sciences & Environment Chemistry Materials Science Metal-Organic Frameworks Metallurgy Organometallic Chemistry

Technical Tags:

Spectroscopy Infrared Spectroscopy Synchtron-based Fourier Transform Infrared Spectroscopy (SR-FTIR)