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Synthesis of a metal–organic framework confined in periodic mesoporous silica with enhanced hydrostability as a novel fiber coating for solid‐phase microextraction
Author(s) -
Abolghasemi Mir Mahdi,
Yousefi Vahid,
Piryaei Marzieh
Publication year - 2015
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201400916
Subject(s) - solid phase microextraction , fiber , mesoporous material , materials science , extraction (chemistry) , detection limit , repeatability , metal organic framework , mesoporous silica , coating , desorption , linear range , thermal stability , hybrid material , matrix (chemical analysis) , chromatography , chemical engineering , composite material , chemistry , mass spectrometry , adsorption , gas chromatography–mass spectrometry , nanotechnology , organic chemistry , engineering , catalysis
A metal–organic framework/periodic mesoporous silica (MOF‐5@SBA‐15) hybrid material has been prepared by using SBA‐15 as a matrix. The prepared MOF‐5@SBA‐15 hybrid material was then deposited on a stainless‐steel wire to obtain the fiber for the solid‐phase microextraction of phenolic compounds. Modifications in the metal–organic framework structure have proven to improve the extraction performance of MOF/SBA‐15 hybrid materials, compared to pure MOF‐5 and SBA‐15. Optimum conditions include an extraction temperature of 75°C, a desorption temperature of 260°C, and a salt concentration of 20% w/v. The dynamic linear range and limit of detection range from 0.1–500 and from 0.01–3.12 ng/mL, respectively. The repeatability for one fiber ( n = 3), expressed as relative standard deviation, is between 4.3 and 9.6%. The method offers the advantage of being simple to use, rapid, and low cost, the thermal stability of the fiber, and high relative recovery (compared to conventional methods) represent additional attractive features.