Cr- and Zn-substituted cobalt ferrite nanoparticles supported on guanidine–modified graphene oxide as efficient and recyclable catalysts
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- 作者：Ahmad Shaabani ; Zeinab Hezarkhani ; Mina Keramati Nejad
- 刊名：Journal of Materials Science
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：52
- 期：1
- 页码：96-112
- 全文大小：3,824 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Materials Science
Characterization and Evaluation Materials
Polymer Sciences
Continuum Mechanics and Mechanics of Materials
Crystallography
Mechanics - 出版者：Springer Netherlands
- ISSN：1573-4803
- 卷排序：52
文摘
Cr- and Zn-substituted cobalt ferrite nanoparticles supported on guanidine-grafted graphene oxide nanosheets, CrCoFeO4@G–GO and Zn0.5Co0.5Fe2O4@G–GO, were synthesized and characterized by flame atomic absorption spectroscopy, inductively coupled plasma optical emission spectrometer, energy-dispersive spectroscopy, FT-IR spectroscopy, UV–Vis spectroscopy, x-ray diffraction, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and Brunauer, Emmett, and Teller analysis. The potential of synthesized catalysts has been investigated in the aerobic oxidation of alkyl arenes and alcohols to the corresponding aldehydes and ketones and one-pot tandem oxidative synthesis of 2-phenylbenzo[d]oxazole derivatives. The results show that CrCoFeO4@G–GO and Zn0.5Co0.5Fe2O4@G–GO catalysts exhibit high catalytic activity and selectivity in the oxidation reactions in the absence of any other oxidizing reagent or initiator.