Startseite Sol-gel synthesis, characterisation, and photocatalytic activity of porous spinel Co3O4 nanosheets
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Sol-gel synthesis, characterisation, and photocatalytic activity of porous spinel Co3O4 nanosheets

  • Manoj Pudukudy EMAIL logo und Zahira Yaakob
Veröffentlicht/Copyright: 15. April 2014
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Chemical Papers
Aus der Zeitschrift Chemical Papers Band 68 Heft 8

Abstract

Mesoporous spinel Co3O4 nanosheets were synthesised via a simple sol-gel route using the Pluronic P123 triblock copolymer as the stabilising agent. Their structural, morphological, and textural properties were characterised. FTIR spectrum revealed the formation of cobalt oxide without any surface adsorbed impurities. Face centered cubic phase of spinel Co3O4 with the mean crystalline size of 26 nm was assigned by the X-ray diffraction analysis without the formation of other phases. Porous nanosheets and cave-like morphologies were identified from the scanning electron microscopy (SEM) images. Highly agglomerated more or less spherical particles with well separated lattice fringes, representing the oriented growth of nanocrystals, were noticed on the transmission electron microscopy photographs. Surface area analysis revealed that the spinel has high surface area of about 25 m2 g−1 with monomodal mesoporosity. The average pore size distribution was found to be about 15.8 nm. The as-prepared spinel photocatalyst showed a mild photocatalytic activity in the degradation of methylene blue (2.5 mg L−1) under UV light irradiation with air as the oxidising agent. Photocatalytic activity of the as-prepared reusable Co3O4 was found to be higher than that of the commercial spinel powder.

Keywords: spinel Co3O4 ; porous nanosheets; sol-gel synthesis; photodegradation; reusability

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Published Online: 2014-4-15
Published in Print: 2014-8-1

© 2014 Institute of Chemistry, Slovak Academy of Sciences

Artikel in diesem Heft

  1. Recent advances in application of liquid-based micro-extraction: A review
  2. Determination of nitrites and nitrates in drinking water using capillary electrophoresis
  3. Comparison of digestion methods for determination of total phosphorus in river sediments
  4. Interdisciplinary study on pottery experimentally impregnated with wine
  5. Improvement in γ-decalactone production by Yarrowia sp. after genome shuffling
  6. Development of an effective extraction process for coenzyme Q10 from Artemia
  7. Effect of anions on the structure and catalytic properties of a La-doped Cu-Mn catalyst in the water-gas shift reaction
  8. Effect of apple pomace powder addition on farinographic properties of wheat dough and biscuits quality
  9. Influence of caffeine and temperature on corrosion-resistance of CoCrMo alloy
  10. Cetyltrimethylammonium bromide- and ethylene glycol-assisted preparation of mono-dispersed indium oxide nanoparticles using hydrothermal method
  11. Sol-gel synthesis, characterisation, and photocatalytic activity of porous spinel Co3O4 nanosheets
  12. Solvent-free synthesis of β-enamino ketones and esters catalysed by recyclable iron(III) triflate
  13. Potassium phthalimide-catalysed one-pot multi-component reaction for efficient synthesis of amino-benzochromenes in aqueous media
  14. Organocatalytic SOMO reactions of copper(I)-acetylide and alkylindium compounds with aldehydes
  15. Molecular modelling and quantitative structure-activity relationship studies of anatoxin-a and epibatidine derivatives with affinity to rodent nAChR receptors
  16. Efficient one-pot synthesis of 2-hydroxyethyl per-O-acetyl glycosides
  17. Properties of singlet- and triplet-excited states of hemicyanine dyes
https://doi.org/10.2478/s11696-014-0561-7
Schlagwörter für diesen Artikel
spinel Co3O4; porous nanosheets; sol-gel synthesis; photodegradation; reusability

Artikel in diesem Heft

  1. Recent advances in application of liquid-based micro-extraction: A review
  2. Determination of nitrites and nitrates in drinking water using capillary electrophoresis
  3. Comparison of digestion methods for determination of total phosphorus in river sediments
  4. Interdisciplinary study on pottery experimentally impregnated with wine
  5. Improvement in γ-decalactone production by Yarrowia sp. after genome shuffling
  6. Development of an effective extraction process for coenzyme Q10 from Artemia
  7. Effect of anions on the structure and catalytic properties of a La-doped Cu-Mn catalyst in the water-gas shift reaction
  8. Effect of apple pomace powder addition on farinographic properties of wheat dough and biscuits quality
  9. Influence of caffeine and temperature on corrosion-resistance of CoCrMo alloy
  10. Cetyltrimethylammonium bromide- and ethylene glycol-assisted preparation of mono-dispersed indium oxide nanoparticles using hydrothermal method
  11. Sol-gel synthesis, characterisation, and photocatalytic activity of porous spinel Co3O4 nanosheets
  12. Solvent-free synthesis of β-enamino ketones and esters catalysed by recyclable iron(III) triflate
  13. Potassium phthalimide-catalysed one-pot multi-component reaction for efficient synthesis of amino-benzochromenes in aqueous media
  14. Organocatalytic SOMO reactions of copper(I)-acetylide and alkylindium compounds with aldehydes
  15. Molecular modelling and quantitative structure-activity relationship studies of anatoxin-a and epibatidine derivatives with affinity to rodent nAChR receptors
  16. Efficient one-pot synthesis of 2-hydroxyethyl per-O-acetyl glycosides
  17. Properties of singlet- and triplet-excited states of hemicyanine dyes
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