Green Synthesis of Mesoporous Fe-SBA-15 with Well-Isolated Iron Sites | Zendy

Hongchuan Xin | Zendy; Yuan Fang | Zendy; Xuebing Li | Zendy

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Green Synthesis of Mesoporous Fe-SBA-15 with Well-Isolated Iron Sites

Author(s) -

Hongchuan Xin,

Yuan Fang,

Xuebing Li

Publication year - 2014

Publication title -

energy and environment focus

Language(s) - English

Resource type - Journals

eISSN - 2326-3059

pISSN - 2326-3040

DOI - 10.1166/eef.2014.1098

Subject(s) - mesoporous material , materials science , chemical engineering , chemistry , organic chemistry , catalysis , engineering

The ordered iron-substituted mesoporous silicas (Fe-SBA-15) have been hydrothermally synthesized under environmentally friendly conditions. In the presence of tetramethoxysilane (TMOS), triblock copolymer surfactant P123 and iron nitrate, highly ordered Fe-SBA-15 can be obtained. The results of X-ray diffraction (XRD), nitrogen sorption and transmission electron microscopy (TEM) indicate the easy formation of highly ordered hexagonal structures without addition of external acid. The mild template-removal route based on Fenton’s mechanism through H2O2 oxidation is employed, as compared with conventional high-temperature calcination. The H2O2 oxidation is proved to be a better method to obtain desirable iron sites, as evidenced by UV-Vis spectroscopy. The current synthesis system provides a green route for the synthesis of Fe-SBA-15 with wellisolated iron species.

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