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Raman investigation on carbonization process of metal–organic frameworks
Author(s) -
Gong YuTing,
Li BingHan,
Pei Tsung,
Lin ChiaHer,
Lee Szetsen
Publication year - 2016
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4952
Subject(s) - carbonization , raman spectroscopy , scanning electron microscope , arrhenius equation , inert gas , metal organic framework , activation energy , carbon fibers , inert , powder diffraction , metal , chemistry , chemical engineering , analytical chemistry (journal) , materials science , crystallography , organic chemistry , composite material , physics , adsorption , optics , engineering , composite number
Under inert gas flow and high temperature, carbonization of aluminum‐based metal–organic frameworks (MOFs) was carried out. The formation rate of carbonized MOFs (CMOFs) was monitored by the variation of the Raman D band to G band intensity ratio with heat treatment duration. Powder x‐ray diffraction (PXRD) and scanning electron microscope (SEM) techniques were used to confirm the formation of CMOFs. The activation energy was extracted from the temperature‐dependent rate constants using the Arrhenius equation and correlated with the structural properties of precursor MOFs such as pore size and the number of carbon atoms per ligand. A reaction mechanism is proposed and discussed for the formation of CMOFs based on Raman observation. Copyright © 2016 John Wiley & Sons, Ltd.