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Synthesis of Co3O4 macrocubes catalyst using novel chitosan/urea template for hydrogen generation from sodium borohydride

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  • Tomboc, Gracita Raquel M.
  • Tamboli, Ashif H.
  • Kim, Hern

Abstract

Co3O4 catalyst with porous macrocubes structure were one pot formulated by hydrothermal treatment of chitosan/urea/Co(NO3)2·6H2O mixtures at 180 °C for 8 h and then calcined at different temperatures for 4 h. Chitosan and urea are both compounds containing amino group, which made them different from the previous supporting materials. In this study, chitosan was the major template in the solution and determined the shape of the Co3O4 catalyst while urea played a major support to cobalt (II) nitrate hexahydrate during crystal growth of the catalyst. The prepared materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrum (FT-IR), UV–vis Absorption Spectrum and BET technique. A remarkably high hydrogen generation rate of 1497.55 mlH2 min−1 gcat−1 was obtained from the hydrolysis of 2 wt % NaBH4 solution with 0.02 g catalyst at 25 °C. The catalytic activity of the as-prepared sample was examined for hydrolysis reaction of sodium borohydride (NaBH4) at different temperatures, catalyst amount and NaBH4 concentration. The results reveal that the average crystallite size, macrocubes thickness, surface properties and catalytic activity of Co3O4 macrocubes could be controlled by varying the mass ratio of chitosan/urea to cobalt concentration.

Suggested Citation

  • Tomboc, Gracita Raquel M. & Tamboli, Ashif H. & Kim, Hern, 2017. "Synthesis of Co3O4 macrocubes catalyst using novel chitosan/urea template for hydrogen generation from sodium borohydride," Energy, Elsevier, vol. 121(C), pages 238-245.
  • Handle: RePEc:eee:energy:v:121:y:2017:i:c:p:238-245
    DOI: 10.1016/j.energy.2017.01.027
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    References listed on IDEAS

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    1. Tamboli, Ashif H. & Chaugule, Avinash A. & Sheikh, Faheem A. & Chung, Wook-Jin & Kim, Hern, 2015. "Synthesis and application of CeO2–NiO loaded TiO2 nanofiber as novel catalyst for hydrogen production from sodium borohydride hydrolysis," Energy, Elsevier, vol. 89(C), pages 568-575.
    2. Chinnappan, Amutha & Jadhav, Arvind H. & Puguan, John Marc C. & Appiah-Ntiamoah, Richard & Kim, Hern, 2015. "Fabrication of ionic liquid/polymer nanoscale networks by electrospinning and chemical cross-linking and their application in hydrogen generation from the hydrolysis of NaBH4," Energy, Elsevier, vol. 79(C), pages 482-488.
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    4. Tamboli, Ashif H. & Jadhav, Amol R. & Chung, Wook-Jin & Kim, Hern, 2015. "Structurally modified cerium doped hydrotalcite-like precursor as efficient catalysts for hydrogen production from sodium borohydride hydrolysis," Energy, Elsevier, vol. 93(P1), pages 955-962.
    5. Chou, Chang-Chen & Hsieh, Ching-Hsuan & Chen, Bing-Hung, 2015. "Hydrogen generation from catalytic hydrolysis of sodium borohydride using bimetallic Ni–Co nanoparticles on reduced graphene oxide as catalysts," Energy, Elsevier, vol. 90(P2), pages 1973-1982.
    6. Loghmani, Mohammad Hassan & Shojaei, Abdollah Fallah, 2014. "Hydrogen production through hydrolysis of sodium borohydride: Oleic acid stabilized Co–La–Zr–B nanoparticle as a novel catalyst," Energy, Elsevier, vol. 68(C), pages 152-159.
    7. Huang, Yao-Hui & Su, Chia-Chi & Wang, Shu-Ling & Lu, Ming-Chun, 2012. "Development of Al2O3 carrier-Ru composite catalyst for hydrogen generation from alkaline NaBH4 hydrolysis," Energy, Elsevier, vol. 46(1), pages 242-247.
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    1. Bozkurt, Gamze & Özer, Abdulkadir & Yurtcan, Ayşe Bayrakçeken, 2019. "Development of effective catalysts for hydrogen generation from sodium borohydride: Ru, Pt, Pd nanoparticles supported on Co3O4," Energy, Elsevier, vol. 180(C), pages 702-713.
    2. Helder X. Nunes & Diogo L. Silva & Carmen M. Rangel & Alexandra M. F. R. Pinto, 2021. "Rehydrogenation of Sodium Borates to Close the NaBH 4 -H 2 Cycle: A Review," Energies, MDPI, vol. 14(12), pages 1-28, June.

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