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Fabrication of NiO/Ta2O5 composite photocatalyst for hydrogen production under visible light

Authors

  • K. M. Parida,

    Corresponding author
    • Colloids and Materials Chemistry Department, Institute of Minerals and Materials Technology (CSIR), Bhubaneswar-751013, Orissa, India
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  • Saroj Ku. Mahanta,

    1. Colloids and Materials Chemistry Department, Institute of Minerals and Materials Technology (CSIR), Bhubaneswar-751013, Orissa, India
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  • Satyabadi Martha,

    1. Colloids and Materials Chemistry Department, Institute of Minerals and Materials Technology (CSIR), Bhubaneswar-751013, Orissa, India
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  • Amtul Nashim

    1. Colloids and Materials Chemistry Department, Institute of Minerals and Materials Technology (CSIR), Bhubaneswar-751013, Orissa, India
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K. M. Parida, Colloids and Materials Chemistry Department, Institute of Minerals and Materials Technology (CSIR), Bhubaneswar-751013, Orissa, India.

E-mail: paridakulamani@yahoo.com

SUMMARY

A series of novel composite photocatalysts, NiO/Ta2O5, were synthesized by the solid-state reaction and successfully characterized by X-ray diffraction, Transmission electron microscopy, diffused reflectance ultraviolet and visible (DRUV-vis) spectroscopy, Photoluminescence and X-ray photoelectron spectroscopy. Powder X-ray diffraction (PXRD) pattern indicated the formation of composite material. The red shift in the absorption edges of the newly prepared composite photocatalysts were well observed from the DRUV-vis spectra. The composite photocatalyst prepared at metal ratio (1:3) showed highest result toward hydrogen production under ultraviolet and visible light irradiation in the presence of methanol as a sacrificial agent. Copyright © 2011 John Wiley & Sons, Ltd.

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