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Synthesis of g‐C 3 N 4 ‐Decorated Magnesium Ferrite Nanoparticle Composites for Improved Ethanol Sensing
Author(s) -
Zhang Run,
Wang Yan,
Zhang Zhanying,
Cao Jianliang
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802452
Subject(s) - materials science , nanosheet , nanocomposite , nanoparticle , scanning electron microscope , ferrite (magnet) , transmission electron microscopy , analytical chemistry (journal) , magnesium , nuclear chemistry , chemical engineering , composite material , nanotechnology , metallurgy , chemistry , organic chemistry , engineering
The nanocomposites of g‐C 3 N 4 nanosheet decorated magnesium ferrite nanoparticles were synthesized by a facile solvothermal method. X‐ray diffraction (XRD), field‐emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and thermal gravimetric analysis and differential scanning calorimeter (TG‐DSC) techniques were used to characterize the structure and morphology of the as‐prepared nanocomposites. The results indicated that the MgFe 2 O 4 nanoparticles were highly dispersed on the surface of the g‐C 3 N 4 nanosheet. The gas‐sensing properties of the samples were tested, and the response value (Ra/Rg) of the MgFe 2 O 4 /g‐C 3 N 4 nanocomposite with 15 wt.% g‐C 3 N 4 content‐based sensor to 500 ppm of ethanol was 112 at 300 °C, which is 5 times higher than that of pure MgFe 2 O 4 . Moreover, the MgFe 2 O 4 /g‐C 3 N 4 ‐15‐based sensor showed impressive selectivity, fast response and recovery characteristics, and good linearity in range of ethanol concentration (10–500 ppm).