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Enhanced photoelectrochemical performance of TiO2 photoanode decorated with Pd-carbon core shell nanoparticles

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  • Sharma, Rishabh
  • Kodan, Nisha
  • Singh, Vinod
  • Sharma, Shailesh Narayan
  • Sinha, Om Prakash

Abstract

In this work, we report enhancement in photoelectrochemical performance of TiO2 photo-anode on coating it with Palladium carbon (Pd-C) core shell nanoparticles. Transmission electron microscopy images confirmed formation of Pd nanoparticle and Pd-C nanoparticles with Pd core surrounded by carbon shell. X-Ray Diffraction analysis confirmed the pure anatase phase of synthesized TiO2 films. Raman spectroscopy revealed graphitic nature of carbon in Pd-C. In comparison to pristine TiO2, quenching in PL intensity of Pd-TiO2& Pd-C-TiO2 sample was observed which indicates lowering of recombination rate of charge carriers, this effect is explained through surface plasmon resonance (SPR) in Pd and Pd-C nanoparticles. Also, SPR in Pd & Pd-C promoted absorption of photons in visible region thus making both Pd-C-TiO2& Pd-TiO2 active in visible region. Finally, graphitic carbon layer over Pd in Pd-C-TiO2 offered an additional advantage over bare Pd in Pd-TiO2 i.e. reducing the charge transfer resistance between electrode and electrolyte under illumination.

Suggested Citation

  • Sharma, Rishabh & Kodan, Nisha & Singh, Vinod & Sharma, Shailesh Narayan & Sinha, Om Prakash, 2019. "Enhanced photoelectrochemical performance of TiO2 photoanode decorated with Pd-carbon core shell nanoparticles," Renewable Energy, Elsevier, vol. 134(C), pages 1232-1239.
    • Handle: RePEc:eee:renene:v:134:y:2019:i:c:p:1232-1239
    DOI: 10.1016/j.renene.2018.09.061
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    Cited by:

    1. Belessiotis, George V. & Kontos, Athanassios G., 2022. "Plasmonic silver (Ag)-based photocatalysts for H2 production and CO2 conversion: Review, analysis and perspectives," Renewable Energy, Elsevier, vol. 195(C), pages 497-515.
    2. Mojaddami, Majdoddin & Simchi, Abdolreza, 2020. "Robust water splitting on staggered gap heterojunctions based on WO3∖WS2–MoS2 nanostructures," Renewable Energy, Elsevier, vol. 162(C), pages 504-512.

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