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Valency control in MoO3−δ nanoparticles generated by pulsed laser liquid solid interaction

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Abstract

The possibility of synthesizing binary oxides nanoparticles in a nano-scaled form by laser liquid solid interaction using a NdYAG “1.064 μm” as an irradiating laser source is reported. The case of MoO3−δ is emphasized. Furthermore, it is demonstrated that the Mo–O electronic valence can be controlled through the coupling effects of oxygen enriched nature of the used coating liquid layer, namely pure H2O or H2O2 and the laser beam fluence. Dark blue hydrated molybdic pentoxide Mo2O5·xH2O and yellow molybdenum trioxide MoO3 nano-suspensions were reproducibly synthesized with hydrogen peroxide and water, respectively, at a relatively high ablation rate. The average size of the molybdenum trioxide nanoparticles was about <ϕ>~8 nm, slightly larger than the molybdic pentoxide ones “<ϕ>~6.2 nm”.

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Acknowledgments

This research program was generously financed by grants from the African Laser Centre, National Research Foundation of South Africa and the Abdus Salam ICTP via the Nanosciences African Network (NANOAFNET) as well as by the US-African Materials Research Initiative to whom we are grateful.

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Authors and Affiliations

  1. Nanosciences Laboratories, Materials Research Department, Nanosciences African Network, iThemba LABS-National Research Foundation of South Africa, Old Faure Road, P.O. Box 722, Somerset West, 7129, Western Cape, South Africa

    M. Maaza, B. D. Ngom, S. Khamlich, J. B. Kana Kana, P. Sibuyi & D. Hamidi

  2. Faculty of Sciences, Tshwane University of Technology, Pretoria, South Africa

    M. Maaza & S. Khamlich

  3. African Laser Centre, CSIR Campus, P.O. Box 395, Pretoria, South Africa

    M. Maaza

  4. Institut National de La Recherche Scientifique Centre, Energie Matériaux Télécommunications, 1650, Boul. Lionel Boulet, Varennes, QC, J3X 1S2, Canada

    B. D. Ngom

  5. Laboratoire de Photonique et de Nano-Fabrication, Groupe de Physique du Solide et Sciences des Matériaux, Département de Physique Facultés des Sciences et Technique, Université Cheikh Anta Diop de Dakar, Dakar, Senegal

    B. D. Ngom

  6. Department of Materials Science and Engineering, University of Arizona, Tucson, AZ, 85721, USA

    J. B. Kana Kana

  7. Forney Hall of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, IN, 47907, USA

    S. Ekambaram

Authors
  1. M. Maaza
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  2. B. D. Ngom
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  3. S. Khamlich
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  4. J. B. Kana Kana
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  5. P. Sibuyi
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  6. D. Hamidi
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  7. S. Ekambaram
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Corresponding author

Correspondence to S. Khamlich.

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Maaza, M., Ngom, B.D., Khamlich, S. et al. Valency control in MoO3−δ nanoparticles generated by pulsed laser liquid solid interaction. J Nanopart Res 14, 714 (2012). https://doi.org/10.1007/s11051-011-0714-3

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  • DOI: https://doi.org/10.1007/s11051-011-0714-3

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