The photocatalytic hydrogen evolution enhancement of the MoS2 lamellas modified g-C3N4/SrTiO3 core-shell heterojunction

Jiaqi Pan, Yanyan Liu, Wei Ou, Shi Li, Hongli Li, Jingjing Wang, Changsheng Song, Yingying Zheng and Chaorong Li

Renewable Energy, 2020, vol. 161, issue C, 340-349

Abstract: The MoS2 lamellas modified g-C3N4/SrTiO3 core-shell heterojunction is prepared via a simple continuous hydrothermal-annealing method. There, the g-C3N4 shell is deposited on the surface of as-prepared SrTiO3 nanosphere, and then the MoS2 lamellas grow on the surface of core-shell heterojunction. Evaluated by the hydrogen evolution, the as-prepared MoS2/g-C3N4/SrTiO3 core-shell heterojunction exhibits an obvious photocatalytic enhancement of about ∼30 folds than single SrTiO3 nanospheres, which can be mainly ascribed to that, the core-shell heterojunction can promote the charge carriers separation efficiently and the Pt-like behavior MoS2 can promote the photo-generated electrons diffusing into water quickly. Additionally, the ultrathin MoS2 lamellas with a mass of edge S atoms can provide sufficient HER active sites and shorten photoelectron transport route to improve photocatalytic stability.

Keywords: Photocatalytic hydrogen evolution; MoS2 lamellas; Core-shell heterojunction; Stability (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:161:y:2020:i:c:p:340-349

DOI: 10.1016/j.renene.2020.07.097

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