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Throwing light on platinized carbon nanostructured composites for hydrogen generation

Mangrulkar, Priti A and Kotkondawar, Abhay V and Mukherjee, Sumanta and Joshi, Meenal V and Labhsetwar, Nitin and Sarma, DD and Rayalu, Sadhana S (2014) Throwing light on platinized carbon nanostructured composites for hydrogen generation. In: ENERGY & ENVIRONMENTAL SCIENCE, 7 (12). pp. 4087-4094.

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Official URL: http://dx.doi.org/ 10.1039/c4ee02444c

Abstract

In the present study, we have synthesised carbon nanoparticles (CNPs) through a relatively simple process using a hydrocarbon precursor. These synthesised CNPs in the form of elongated spherules and/or agglomerates of 30-55 nm were further used as a support to anchor platinum nanoparticles. The broad light absorption (300-700 nm) and a facile charge transfer property of CNPs in addition to the plasmonic property of Pt make these platinized carbon nanostructures (CNPs/Pt) a promising candidate in photocatalytic water splitting. The photocatalytic activity was evaluated using ethanol as the sacrificial donor. The photocatalyst has shown remarkable activity for hydrogen production under UV-visible light while retaining its stability for nearly 70 h. The broadband absorption of CNPs, along with the Surface Plasmon Resonance (SPR) effect of PtNPs singly and in composites has pronounced influence on the photocatalytic activity, which has not been explored earlier. The steady rate of hydrogen was observed to be 20 mu mol h(-1) with an exceptional cumulative hydrogen yield of 32.16 mmol h(-1) g(-1) observed for CNPs/Pt, which is significantly higher than that reported for carbon-based systems.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 29 Dec 2014 05:38
Last Modified: 29 Dec 2014 05:38
URI: http://eprints.iisc.ac.in/id/eprint/50546

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