DataVXACS Applied Energy MaterialsPaper
journal article·2018-07-23Open access

Enhanced Photoactivity and Hydrogen Generation of LaFeO3 Photocathode by Plasmonic Silver Nanoparticle Incorporation

Govinder Singh Pawar, Ameen Elikkottil, Sreeja Seetha, Kalvala Srinivas Reddy, Bala Pesala, Asif Ali Tahir, Tapas Kumar Mallick

ACS Applied Energy Materials· Volume 1· Issue 7
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Source abstract

Abstract

A plasmonic LaFeO3–Ag (LFO-Ag) photocathode was synthesized by incorporating Ag nanoparticles to excite surface plasmon resonances (SPRs) for enhanced light harvesting to drive photoelectrochemical (PEC) hydrogen evolution. The Ag nanoparticles were modeled using finite difference time domain (FDTD) simulations, and the results show an optimal dimension of 50–80 nm for SPR enhancement. Nanostructured LFO films were prepared by a novel and inexpensive spray pyrolysis method, and the Ag nanoparticles were dispersed uniformly on to the films by simple spin coating method. The LFO-Ag photocathode exhibited strong light absorption capability and high current density, twice that of its untreated counterpart. This subsequently led to enhanced PEC hydrogen evolution, doubling the volume of hydrogen generated compared to untreated LFO. The enhancement is ascribed to the strong SPR effect and the synergy between the Ag nanoparticles and nanostructured LFO photocathode.
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Research context

Nanomaterials

OpenAlex topics: ZnO doping and properties · Copper-based nanomaterials and applications · Ga2O3 and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9FE, United Kingdom

Academy of Scientific and Innovative Research (AcSIR), Taramani, Chennai 600113, India

CSIR−Structural Engineering Research Centre (CSIR-SERC), Taramani, Chennai 600113, India

CSIR−Central Electronics Engineering Research Institute (CSIR-CEERI), CSIR Madras Complex, Taramani, Chennai 600113, India

Heat Transfer and Thermal Power Laboratory, Department of Mechanical Engineering, Indian Institute of Technology, Madras, Chennai 600036, India

Funding

Engineering and Physical Sciences Research Council · Council of Scientific and Industrial Research · UK-India Education and Research Initiative

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