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Yolk‐Shell Structured Fe 3 O 4 @ Copper Silicate as Catalyst for Catalytic Degradation of Methylene Blue
Author(s) -
Huang Kai,
Wang Huiping
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.201801945
Subject(s) - catalysis , copper , nuclear chemistry , methylene blue , chemistry , bromide , leaching (pedology) , sorption , fourier transform infrared spectroscopy , inorganic chemistry , chemical engineering , adsorption , organic chemistry , environmental science , photocatalysis , soil science , engineering , soil water
Yolk‐shell structured Fe 3 O 4 @copper silicates (FCSs) were prepared and applied for catalytic degradation of methylene blue (MB). The samples were characterized by SEM, TEM, XRD, FTIR, XPS and N 2 sorption isotherms. FCS prepared with trisodium citrate, named FtCS, presented better catalytic performance than FcCS (FCS prepared with cetyltrimethylammonium bromide (CTAB)) and other catalysts reported recently. Four successive runs of FtCS along with the negligible Cu 2+ leaching (6 ppm) certified that the composite was stable. The results showed that copper component ≡Cu(II) in FtCS was the main active phase which promoted H 2 O 2 to produce hydroxyl radicles (HO⋅) resulting in the MB decomposition.