Reverse micellar based synthesis of ultrafine MgO nanoparticles (8-10nm): Characterization and catalytic properties

Aparna Ganguly, Phong Trinh, K. V. Ramanujachary, Tokeer Ahmad, Amos Mugweru, Ashok K. Ganguli

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Abstract

Anisotropic nanostructures of magnesium oxalate dihydrate were synthesized using cationic surfactant based microemulsion method. The cationic surfactant plays an important role in forming the anisotropic structures. The oxalate nanostructures acts as an excellent precursor for the synthesis of fine magnesium oxide nanoparticles (∼10nm). Both the precursor and the oxide were characterized by using PXRD, IR, surface area and HRTEM. The surface area of these surfactant free oxide nanoparticles was found to be 108m2/g. The catalytic activity of this basic oxide was examined for the Claisen-Schmidt condensation reaction and was found to be comparable to the best reported for the conventionally prepared MgO. Chalcone formation was found to increase with time as observed using gas chromatography-mass spectrometry (GC-MS). The reusability of the catalyst was checked by using the same catalyst twice which showed a reduced percentage (50% compared to first cycle) conversion.

Original languageEnglish (US)
Pages (from-to)137-142
Number of pages6
JournalJournal of Colloid And Interface Science
Volume353
Issue number1
DOIs
StatePublished - Jan 1 2011

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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