Study of Gel Growth Cobalt (II) Oxalate Crystals as Precursor of Co3O4 Nano Particles

DOI: https://doi.org/10.9767/bcrec.7.3.4066.198-204
bcrec_4066

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Submitted: 25-10-2012
Published: 09-02-2013
Section: Original Research Articles
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Crystal growth of cobalt (II) oxalate in silica gel at room temperature as precursor of Co3O4 nano particles has been studied. Specifically, this project is focusing on the use of two different reaction tube types toward crystallization of cobalt (II) oxalate in gel. The gel was prepared at pH 5 by reacting sodium metasilicate solution with dilute nitric acid (for U-tube) and oxalic acid (for straight tube), with gelling time of 4 days and crystal growth time of 8 (for straight tube) and 12 (for U-tube) weeks. Result shows that pink crystalline powder was directly formed using straight tube method. The use of different solvents in straight tube method affects crystallization and could delay direct precipitation of the product. In contrast, bigger and better shape of red block crystal was yielded from U-tube method; however, longer growth time was needed. FTIR studies suggest that both growth method produces identical compound of hydrated cobalt (II) oxalate. © 2013 BCREC UNDIP. All rights reserved

Received: 25th October 2012; Revised: 30th November 2012; Accepted: 5th December 2012

[How to Cite: Y.P. Prananto, M.M. Khunur, D.T. Wahyuni, R.A. Shobirin, Y.R. Nata, E. Riskah, (2013). Study of Gel Growth Cobalt (II) Oxalate Crystals as Precursor of Co3O4 Nano Particles. Bulletin of Chemical Reaction Engineering & Catalysis, 7 (3): 198-204. (doi:10.9767/bcrec.7.3.4066.198-204)]

[Permalink/DOI: http://dx.doi.org/10.9767/bcrec.7.3.4066.198-204 ]

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Keywords

cobalt (II) oxalate; silica gel; reaction tube type; nano particles

  1. Yuniar Ponco Prananto  Scholar
    Department of Chemistry, Faculty of Mathematics and Natural Sciences, Brawijaya University, Jl. Veteran 01 Malang, 65145, Indonesia
  2. Mohammad Misbah Khunur 
    Department of Chemistry, Faculty of Mathematics and Natural Sciences, Brawijaya University, Jl. Veteran 01 Malang, 65145, Indonesia
  3. Dini Tri Wahyuni 
    Department of Chemistry, Faculty of Mathematics and Natural Sciences, Brawijaya University, Jl. Veteran 01 Malang, 65145, Indonesia
  4. Rizky Arief Shobirin 
    Department of Chemistry, Faculty of Mathematics and Natural Sciences, Brawijaya University, Jl. Veteran 01 Malang, 65145, Indonesia
  5. Yoga Rizky Nata 
    Department of Chemistry, Faculty of Mathematics and Natural Sciences, Brawijaya University, Jl. Veteran 01 Malang, 65145, Indonesia
  6. Efiria Riskah 
    Department of Chemistry, Faculty of Mathematics and Natural Sciences, Brawijaya University, Jl. Veteran 01 Malang, 65145, Indonesia
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