Please use this identifier to cite or link to this item: http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/3844
Title: CoS2TiO2 Nanocomposites for Hydrogen Production under UV Irradiation
Authors: Shanmugaratnam, S.
Velauthapillai, D.
Ravirajan, P.
Christy, A.A.
Shivatharsiny, Y.
Keywords: transition metal chalcogenides;titania;hydrothermal;hydrogen;water splitting
Issue Date: 2019
Publisher: University of Jaffna
Abstract: Transition metal chalcogenides have intensively focused on photocatalytic hydrogen production for a decade due to their stronger edge and the quantum confinement effect. This work mainly focuses on synthesis and hydrogen production efficiencies of cobalt disulfide (CoS2)-embedded TiO2 nanocomposites. Materials are synthesized by using a hydrothermal approach and the hydrogen production efficiencies of pristine CoS2, TiO2 nanoparticles and CoS2/TiO2 nanocomposites are compared under UV irradiation. A higher amount of hydrogen production (2.55 mmol g−1 ) is obtained with 10 wt.% CoS2/TiO2 nanocomposite than pristineTiO2 nanoparticles, whereas no hydrogen production was observed with pristine CoS2 nanoparticles. This result unveils that the metal dichalcogenide–CoS2 acts as an effective co-catalyst and nanocrystalline TiO2 serves as an active site by effectively separating the photogenerated electron–hole pair. This study lays down a new approach for developing transition metal dichalcogenide materials with significant bandgaps that can effectively harness solar energy for hydrogen production.
URI: http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/3844
Appears in Collections:Physics

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