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

IR@NPL: CSIR-National Physical Laboratory, New Delhi


Field	Value

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

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

Subject	Energy Fuels

Description	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.

Publisher	Elsevier

Date	2019-04

Type	Article PeerReviewed

Format	application/pdf

Identifier	http://npl.csircentral.net/4184/1/Enhanced%20photoelectrochemical.pdf Sharma, Rishabh and Kodan, Nisha and Singh, Vinod and Sharma, Shailesh Narayan and Sinha, Om Prakash (2019) Enhanced photoelectrochemical performance of TiO2 photoanode decorated with Pd-carbon core shell nanoparticles. Renewable Energy, 134. pp. 1232-1239. ISSN 0960-1481

Relation	http://npl.csircentral.net/4184/